xref: /third_party/node/test/cctest/gtest/gtest.h

// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file defines the public API for Google Test.  It should be
// included by any test program that uses Google Test.
//
// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
// leave some internal implementation details in this header file.
// They are clearly marked by comments like this:
//
//   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
//
// Such code is NOT meant to be used by a user directly, and is subject
// to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
// program!
//
// Acknowledgment: Google Test borrowed the idea of automatic test
// registration from Barthelemy Dagenais' (barthelemy@prologique.com)
// easyUnit framework.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_H_
#define GTEST_INCLUDE_GTEST_GTEST_H_

#include <cstddef>
#include <limits>
#include <memory>
#include <ostream>
#include <type_traits>
#include <vector>

// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file declares functions and macros used internally by
// Google Test.  They are subject to change without notice.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_

// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Low-level types and utilities for porting Google Test to various
// platforms.  All macros ending with _ and symbols defined in an
// internal namespace are subject to change without notice.  Code
// outside Google Test MUST NOT USE THEM DIRECTLY.  Macros that don't
// end with _ are part of Google Test's public API and can be used by
// code outside Google Test.
//
// This file is fundamental to Google Test.  All other Google Test source
// files are expected to #include this.  Therefore, it cannot #include
// any other Google Test header.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_

// Environment-describing macros
// -----------------------------
//
// Google Test can be used in many different environments.  Macros in
// this section tell Google Test what kind of environment it is being
// used in, such that Google Test can provide environment-specific
// features and implementations.
//
// Google Test tries to automatically detect the properties of its
// environment, so users usually don't need to worry about these
// macros.  However, the automatic detection is not perfect.
// Sometimes it's necessary for a user to define some of the following
// macros in the build script to override Google Test's decisions.
//
// If the user doesn't define a macro in the list, Google Test will
// provide a default definition.  After this header is #included, all
// macros in this list will be defined to either 1 or 0.
//
// Notes to maintainers:
//   - Each macro here is a user-tweakable knob; do not grow the list
//     lightly.
//   - Use #if to key off these macros.  Don't use #ifdef or "#if
//     defined(...)", which will not work as these macros are ALWAYS
//     defined.
//
//   GTEST_HAS_CLONE          - Define it to 1/0 to indicate that clone(2)
//                              is/isn't available.
//   GTEST_HAS_EXCEPTIONS     - Define it to 1/0 to indicate that exceptions
//                              are enabled.
//   GTEST_HAS_POSIX_RE       - Define it to 1/0 to indicate that POSIX regular
//                              expressions are/aren't available.
//   GTEST_HAS_PTHREAD        - Define it to 1/0 to indicate that <pthread.h>
//                              is/isn't available.
//   GTEST_HAS_RTTI           - Define it to 1/0 to indicate that RTTI is/isn't
//                              enabled.
//   GTEST_HAS_STD_WSTRING    - Define it to 1/0 to indicate that
//                              std::wstring does/doesn't work (Google Test can
//                              be used where std::wstring is unavailable).
//   GTEST_HAS_SEH            - Define it to 1/0 to indicate whether the
//                              compiler supports Microsoft's "Structured
//                              Exception Handling".
//   GTEST_HAS_STREAM_REDIRECTION
//                            - Define it to 1/0 to indicate whether the
//                              platform supports I/O stream redirection using
//                              dup() and dup2().
//   GTEST_LINKED_AS_SHARED_LIBRARY
//                            - Define to 1 when compiling tests that use
//                              Google Test as a shared library (known as
//                              DLL on Windows).
//   GTEST_CREATE_SHARED_LIBRARY
//                            - Define to 1 when compiling Google Test itself
//                              as a shared library.
//   GTEST_DEFAULT_DEATH_TEST_STYLE
//                            - The default value of --gtest_death_test_style.
//                              The legacy default has been "fast" in the open
//                              source version since 2008. The recommended value
//                              is "threadsafe", and can be set in
//                              custom/gtest-port.h.

// Platform-indicating macros
// --------------------------
//
// Macros indicating the platform on which Google Test is being used
// (a macro is defined to 1 if compiled on the given platform;
// otherwise UNDEFINED -- it's never defined to 0.).  Google Test
// defines these macros automatically.  Code outside Google Test MUST
// NOT define them.
//
//   GTEST_OS_AIX      - IBM AIX
//   GTEST_OS_CYGWIN   - Cygwin
//   GTEST_OS_DRAGONFLY - DragonFlyBSD
//   GTEST_OS_FREEBSD  - FreeBSD
//   GTEST_OS_FUCHSIA  - Fuchsia
//   GTEST_OS_GNU_KFREEBSD - GNU/kFreeBSD
//   GTEST_OS_HAIKU    - Haiku
//   GTEST_OS_HPUX     - HP-UX
//   GTEST_OS_LINUX    - Linux
//     GTEST_OS_LINUX_ANDROID - Google Android
//   GTEST_OS_MAC      - Mac OS X
//     GTEST_OS_IOS    - iOS
//   GTEST_OS_NACL     - Google Native Client (NaCl)
//   GTEST_OS_NETBSD   - NetBSD
//   GTEST_OS_OPENBSD  - OpenBSD
//   GTEST_OS_OS2      - OS/2
//   GTEST_OS_QNX      - QNX
//   GTEST_OS_SOLARIS  - Sun Solaris
//   GTEST_OS_WINDOWS  - Windows (Desktop, MinGW, or Mobile)
//     GTEST_OS_WINDOWS_DESKTOP  - Windows Desktop
//     GTEST_OS_WINDOWS_MINGW    - MinGW
//     GTEST_OS_WINDOWS_MOBILE   - Windows Mobile
//     GTEST_OS_WINDOWS_PHONE    - Windows Phone
//     GTEST_OS_WINDOWS_RT       - Windows Store App/WinRT
//   GTEST_OS_ZOS      - z/OS
//
// Among the platforms, Cygwin, Linux, Mac OS X, and Windows have the
// most stable support.  Since core members of the Google Test project
// don't have access to other platforms, support for them may be less
// stable.  If you notice any problems on your platform, please notify
// googletestframework@googlegroups.com (patches for fixing them are
// even more welcome!).
//
// It is possible that none of the GTEST_OS_* macros are defined.

// Feature-indicating macros
// -------------------------
//
// Macros indicating which Google Test features are available (a macro
// is defined to 1 if the corresponding feature is supported;
// otherwise UNDEFINED -- it's never defined to 0.).  Google Test
// defines these macros automatically.  Code outside Google Test MUST
// NOT define them.
//
// These macros are public so that portable tests can be written.
// Such tests typically surround code using a feature with an #if
// which controls that code.  For example:
//
// #if GTEST_HAS_DEATH_TEST
//   EXPECT_DEATH(DoSomethingDeadly());
// #endif
//
//   GTEST_HAS_DEATH_TEST   - death tests
//   GTEST_HAS_TYPED_TEST   - typed tests
//   GTEST_HAS_TYPED_TEST_P - type-parameterized tests
//   GTEST_IS_THREADSAFE    - Google Test is thread-safe.
//   GOOGLETEST_CM0007 DO NOT DELETE
//   GTEST_USES_POSIX_RE    - enhanced POSIX regex is used. Do not confuse with
//                            GTEST_HAS_POSIX_RE (see above) which users can
//                            define themselves.
//   GTEST_USES_SIMPLE_RE   - our own simple regex is used;
//                            the above RE\b(s) are mutually exclusive.

// Misc public macros
// ------------------
//
//   GTEST_FLAG(flag_name)  - references the variable corresponding to
//                            the given Google Test flag.

// Internal utilities
// ------------------
//
// The following macros and utilities are for Google Test's INTERNAL
// use only.  Code outside Google Test MUST NOT USE THEM DIRECTLY.
//
// Macros for basic C++ coding:
//   GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning.
//   GTEST_ATTRIBUTE_UNUSED_  - declares that a class' instances or a
//                              variable don't have to be used.
//   GTEST_DISALLOW_ASSIGN_   - disables operator=.
//   GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=.
//   GTEST_MUST_USE_RESULT_   - declares that a function's result must be used.
//   GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is
//                                        suppressed (constant conditional).
//   GTEST_INTENTIONAL_CONST_COND_POP_  - finish code section where MSVC C4127
//                                        is suppressed.
//
// Synchronization:
//   Mutex, MutexLock, ThreadLocal, GetThreadCount()
//                            - synchronization primitives.
//
// Template meta programming:
//   IteratorTraits - partial implementation of std::iterator_traits, which
//                    is not available in libCstd when compiled with Sun C++.
//
//
// Regular expressions:
//   RE             - a simple regular expression class using the POSIX
//                    Extended Regular Expression syntax on UNIX-like platforms
//                    GOOGLETEST_CM0008 DO NOT DELETE
//                    or a reduced regular exception syntax on other
//                    platforms, including Windows.
// Logging:
//   GTEST_LOG_()   - logs messages at the specified severity level.
//   LogToStderr()  - directs all log messages to stderr.
//   FlushInfoLog() - flushes informational log messages.
//
// Stdout and stderr capturing:
//   CaptureStdout()     - starts capturing stdout.
//   GetCapturedStdout() - stops capturing stdout and returns the captured
//                         string.
//   CaptureStderr()     - starts capturing stderr.
//   GetCapturedStderr() - stops capturing stderr and returns the captured
//                         string.
//
// Integer types:
//   TypeWithSize   - maps an integer to a int type.
//   Int32, UInt32, Int64, UInt64, TimeInMillis
//                  - integers of known sizes.
//   BiggestInt     - the biggest signed integer type.
//
// Command-line utilities:
//   GTEST_DECLARE_*()  - declares a flag.
//   GTEST_DEFINE_*()   - defines a flag.
//   GetInjectableArgvs() - returns the command line as a vector of strings.
//
// Environment variable utilities:
//   GetEnv()             - gets the value of an environment variable.
//   BoolFromGTestEnv()   - parses a bool environment variable.
//   Int32FromGTestEnv()  - parses an Int32 environment variable.
//   StringFromGTestEnv() - parses a string environment variable.
//
// Deprecation warnings:
//   GTEST_INTERNAL_DEPRECATED(message) - attribute marking a function as
//                                        deprecated; calling a marked function
//                                        should generate a compiler warning

#include <ctype.h>   // for isspace, etc
#include <stddef.h>  // for ptrdiff_t
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory>
#include <type_traits>

#ifndef _WIN32_WCE
# include <sys/types.h>
# include <sys/stat.h>
#endif  // !_WIN32_WCE

#if defined __APPLE__
# include <AvailabilityMacros.h>
# include <TargetConditionals.h>
#endif

#include <algorithm>  // NOLINT
#include <iostream>   // NOLINT
#include <sstream>    // NOLINT
#include <string>     // NOLINT
#include <tuple>
#include <utility>
#include <vector>  // NOLINT

// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file defines the GTEST_OS_* macro.
// It is separate from gtest-port.h so that custom/gtest-port.h can include it.

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_

// Determines the platform on which Google Test is compiled.
#ifdef __CYGWIN__
# define GTEST_OS_CYGWIN 1
# elif defined(__MINGW__) || defined(__MINGW32__) || defined(__MINGW64__)
#  define GTEST_OS_WINDOWS_MINGW 1
#  define GTEST_OS_WINDOWS 1
#elif defined _WIN32
# define GTEST_OS_WINDOWS 1
# ifdef _WIN32_WCE
#  define GTEST_OS_WINDOWS_MOBILE 1
# elif defined(WINAPI_FAMILY)
#  include <winapifamily.h>
#  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
#   define GTEST_OS_WINDOWS_DESKTOP 1
#  elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_PHONE_APP)
#   define GTEST_OS_WINDOWS_PHONE 1
#  elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
#   define GTEST_OS_WINDOWS_RT 1
#  elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_TV_TITLE)
#   define GTEST_OS_WINDOWS_PHONE 1
#   define GTEST_OS_WINDOWS_TV_TITLE 1
#  else
    // WINAPI_FAMILY defined but no known partition matched.
    // Default to desktop.
#   define GTEST_OS_WINDOWS_DESKTOP 1
#  endif
# else
#  define GTEST_OS_WINDOWS_DESKTOP 1
# endif  // _WIN32_WCE
#elif defined __OS2__
# define GTEST_OS_OS2 1
#elif defined __APPLE__
# define GTEST_OS_MAC 1
# if TARGET_OS_IPHONE
#  define GTEST_OS_IOS 1
# endif
#elif defined __DragonFly__
# define GTEST_OS_DRAGONFLY 1
#elif defined __FreeBSD__
# define GTEST_OS_FREEBSD 1
#elif defined __Fuchsia__
# define GTEST_OS_FUCHSIA 1
#elif defined(__GLIBC__) && defined(__FreeBSD_kernel__)
# define GTEST_OS_GNU_KFREEBSD 1
#elif defined __linux__
# define GTEST_OS_LINUX 1
# if defined __ANDROID__
#  define GTEST_OS_LINUX_ANDROID 1
# endif
#elif defined __MVS__
# define GTEST_OS_ZOS 1
#elif defined(__sun) && defined(__SVR4)
# define GTEST_OS_SOLARIS 1
#elif defined(_AIX)
# define GTEST_OS_AIX 1
#elif defined(__hpux)
# define GTEST_OS_HPUX 1
#elif defined __native_client__
# define GTEST_OS_NACL 1
#elif defined __NetBSD__
# define GTEST_OS_NETBSD 1
#elif defined __OpenBSD__
# define GTEST_OS_OPENBSD 1
#elif defined __QNX__
# define GTEST_OS_QNX 1
#elif defined(__HAIKU__)
#define GTEST_OS_HAIKU 1
#endif  // __CYGWIN__

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Injection point for custom user configurations. See README for details
//
// ** Custom implementation starts here **

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_

#if !defined(GTEST_DEV_EMAIL_)
# define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com"
# define GTEST_FLAG_PREFIX_ "gtest_"
# define GTEST_FLAG_PREFIX_DASH_ "gtest-"
# define GTEST_FLAG_PREFIX_UPPER_ "GTEST_"
# define GTEST_NAME_ "Google Test"
# define GTEST_PROJECT_URL_ "https://github.com/google/googletest/"
#endif  // !defined(GTEST_DEV_EMAIL_)

#if !defined(GTEST_INIT_GOOGLE_TEST_NAME_)
# define GTEST_INIT_GOOGLE_TEST_NAME_ "testing::InitGoogleTest"
#endif  // !defined(GTEST_INIT_GOOGLE_TEST_NAME_)

// Determines the version of gcc that is used to compile this.
#ifdef __GNUC__
// 40302 means version 4.3.2.
# define GTEST_GCC_VER_ \
    (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__)
#endif  // __GNUC__

// Macros for disabling Microsoft Visual C++ warnings.
//
//   GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 4385)
//   /* code that triggers warnings C4800 and C4385 */
//   GTEST_DISABLE_MSC_WARNINGS_POP_()
#if defined(_MSC_VER)
# define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) \
    __pragma(warning(push))                        \
    __pragma(warning(disable: warnings))
# define GTEST_DISABLE_MSC_WARNINGS_POP_()          \
    __pragma(warning(pop))
#else
// Not all compilers are MSVC
# define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings)
# define GTEST_DISABLE_MSC_WARNINGS_POP_()
#endif

// Clang on Windows does not understand MSVC's pragma warning.
// We need clang-specific way to disable function deprecation warning.
#ifdef __clang__
# define GTEST_DISABLE_MSC_DEPRECATED_PUSH_()                         \
    _Pragma("clang diagnostic push")                                  \
    _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"") \
    _Pragma("clang diagnostic ignored \"-Wdeprecated-implementations\"")
#define GTEST_DISABLE_MSC_DEPRECATED_POP_() \
    _Pragma("clang diagnostic pop")
#else
# define GTEST_DISABLE_MSC_DEPRECATED_PUSH_() \
    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996)
# define GTEST_DISABLE_MSC_DEPRECATED_POP_() \
    GTEST_DISABLE_MSC_WARNINGS_POP_()
#endif

// Brings in definitions for functions used in the testing::internal::posix
// namespace (read, write, close, chdir, isatty, stat). We do not currently
// use them on Windows Mobile.
#if GTEST_OS_WINDOWS
# if !GTEST_OS_WINDOWS_MOBILE
#  include <direct.h>
#  include <io.h>
# endif
// In order to avoid having to include <windows.h>, use forward declaration
#if GTEST_OS_WINDOWS_MINGW && !defined(__MINGW64_VERSION_MAJOR)
// MinGW defined _CRITICAL_SECTION and _RTL_CRITICAL_SECTION as two
// separate (equivalent) structs, instead of using typedef
typedef struct _CRITICAL_SECTION GTEST_CRITICAL_SECTION;
#else
// Assume CRITICAL_SECTION is a typedef of _RTL_CRITICAL_SECTION.
// This assumption is verified by
// WindowsTypesTest.CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION.
typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
#endif
#else
// This assumes that non-Windows OSes provide unistd.h. For OSes where this
// is not the case, we need to include headers that provide the functions
// mentioned above.
# include <unistd.h>
# include <strings.h>
#endif  // GTEST_OS_WINDOWS

#if GTEST_OS_LINUX_ANDROID
// Used to define __ANDROID_API__ matching the target NDK API level.
#  include <android/api-level.h>  // NOLINT
#endif

// Defines this to true iff Google Test can use POSIX regular expressions.
#ifndef GTEST_HAS_POSIX_RE
# if GTEST_OS_LINUX_ANDROID
// On Android, <regex.h> is only available starting with Gingerbread.
#  define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9)
# else
#  define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS)
# endif
#endif

#if GTEST_USES_PCRE
// The appropriate headers have already been included.

#elif GTEST_HAS_POSIX_RE

// On some platforms, <regex.h> needs someone to define size_t, and
// won't compile otherwise.  We can #include it here as we already
// included <stdlib.h>, which is guaranteed to define size_t through
// <stddef.h>.
# include <regex.h>  // NOLINT

# define GTEST_USES_POSIX_RE 1

#elif GTEST_OS_WINDOWS

// <regex.h> is not available on Windows.  Use our own simple regex
// implementation instead.
# define GTEST_USES_SIMPLE_RE 1

#else

// <regex.h> may not be available on this platform.  Use our own
// simple regex implementation instead.
# define GTEST_USES_SIMPLE_RE 1

#endif  // GTEST_USES_PCRE

#ifndef GTEST_HAS_EXCEPTIONS
// The user didn't tell us whether exceptions are enabled, so we need
// to figure it out.
# if defined(_MSC_VER) && defined(_CPPUNWIND)
// MSVC defines _CPPUNWIND to 1 iff exceptions are enabled.
#  define GTEST_HAS_EXCEPTIONS 1
# elif defined(__BORLANDC__)
// C++Builder's implementation of the STL uses the _HAS_EXCEPTIONS
// macro to enable exceptions, so we'll do the same.
// Assumes that exceptions are enabled by default.
#  ifndef _HAS_EXCEPTIONS
#   define _HAS_EXCEPTIONS 1
#  endif  // _HAS_EXCEPTIONS
#  define GTEST_HAS_EXCEPTIONS _HAS_EXCEPTIONS
# elif defined(__clang__)
// clang defines __EXCEPTIONS iff exceptions are enabled before clang 220714,
// but iff cleanups are enabled after that. In Obj-C++ files, there can be
// cleanups for ObjC exceptions which also need cleanups, even if C++ exceptions
// are disabled. clang has __has_feature(cxx_exceptions) which checks for C++
// exceptions starting at clang r206352, but which checked for cleanups prior to
// that. To reliably check for C++ exception availability with clang, check for
// __EXCEPTIONS && __has_feature(cxx_exceptions).
#  define GTEST_HAS_EXCEPTIONS (__EXCEPTIONS && __has_feature(cxx_exceptions))
# elif defined(__GNUC__) && __EXCEPTIONS
// gcc defines __EXCEPTIONS to 1 iff exceptions are enabled.
#  define GTEST_HAS_EXCEPTIONS 1
# elif defined(__SUNPRO_CC)
// Sun Pro CC supports exceptions.  However, there is no compile-time way of
// detecting whether they are enabled or not.  Therefore, we assume that
// they are enabled unless the user tells us otherwise.
#  define GTEST_HAS_EXCEPTIONS 1
# elif defined(__IBMCPP__) && __EXCEPTIONS
// xlC defines __EXCEPTIONS to 1 iff exceptions are enabled.
#  define GTEST_HAS_EXCEPTIONS 1
# elif defined(__HP_aCC)
// Exception handling is in effect by default in HP aCC compiler. It has to
// be turned of by +noeh compiler option if desired.
#  define GTEST_HAS_EXCEPTIONS 1
# else
// For other compilers, we assume exceptions are disabled to be
// conservative.
#  define GTEST_HAS_EXCEPTIONS 0
# endif  // defined(_MSC_VER) || defined(__BORLANDC__)
#endif  // GTEST_HAS_EXCEPTIONS

#if !defined(GTEST_HAS_STD_STRING)
// Even though we don't use this macro any longer, we keep it in case
// some clients still depend on it.
# define GTEST_HAS_STD_STRING 1
#elif !GTEST_HAS_STD_STRING
// The user told us that ::std::string isn't available.
# error "::std::string isn't available."
#endif  // !defined(GTEST_HAS_STD_STRING)

#ifndef GTEST_HAS_STD_WSTRING
// The user didn't tell us whether ::std::wstring is available, so we need
// to figure it out.
// Cygwin 1.7 and below doesn't support ::std::wstring.
// Solaris' libc++ doesn't support it either.  Android has
// no support for it at least as recent as Froyo (2.2).
#define GTEST_HAS_STD_WSTRING                                         \
  (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
     GTEST_OS_HAIKU))

#endif  // GTEST_HAS_STD_WSTRING

// Determines whether RTTI is available.
#ifndef GTEST_HAS_RTTI
// The user didn't tell us whether RTTI is enabled, so we need to
// figure it out.

# ifdef _MSC_VER

#  ifdef _CPPRTTI  // MSVC defines this macro iff RTTI is enabled.
#   define GTEST_HAS_RTTI 1
#  else
#   define GTEST_HAS_RTTI 0
#  endif

// Starting with version 4.3.2, gcc defines __GXX_RTTI iff RTTI is enabled.
# elif defined(__GNUC__)

#  ifdef __GXX_RTTI
// When building against STLport with the Android NDK and with
// -frtti -fno-exceptions, the build fails at link time with undefined
// references to __cxa_bad_typeid. Note sure if STL or toolchain bug,
// so disable RTTI when detected.
#   if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) && \
       !defined(__EXCEPTIONS)
#    define GTEST_HAS_RTTI 0
#   else
#    define GTEST_HAS_RTTI 1
#   endif  // GTEST_OS_LINUX_ANDROID && __STLPORT_MAJOR && !__EXCEPTIONS
#  else
#   define GTEST_HAS_RTTI 0
#  endif  // __GXX_RTTI

// Clang defines __GXX_RTTI starting with version 3.0, but its manual recommends
// using has_feature instead. has_feature(cxx_rtti) is supported since 2.7, the
// first version with C++ support.
# elif defined(__clang__)

#  define GTEST_HAS_RTTI __has_feature(cxx_rtti)

// Starting with version 9.0 IBM Visual Age defines __RTTI_ALL__ to 1 if
// both the typeid and dynamic_cast features are present.
# elif defined(__IBMCPP__) && (__IBMCPP__ >= 900)

#  ifdef __RTTI_ALL__
#   define GTEST_HAS_RTTI 1
#  else
#   define GTEST_HAS_RTTI 0
#  endif

# else

// For all other compilers, we assume RTTI is enabled.
#  define GTEST_HAS_RTTI 1

# endif  // _MSC_VER

#endif  // GTEST_HAS_RTTI

// It's this header's responsibility to #include <typeinfo> when RTTI
// is enabled.
#if GTEST_HAS_RTTI
# include <typeinfo>
#endif

// Determines whether Google Test can use the pthreads library.
#ifndef GTEST_HAS_PTHREAD
// The user didn't tell us explicitly, so we make reasonable assumptions about
// which platforms have pthreads support.
//
// To disable threading support in Google Test, add -DGTEST_HAS_PTHREAD=0
// to your compiler flags.
#define GTEST_HAS_PTHREAD                                                      \
  (GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_HPUX || GTEST_OS_QNX ||          \
   GTEST_OS_FREEBSD || GTEST_OS_NACL || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA || \
   GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_OPENBSD ||          \
   GTEST_OS_HAIKU)
#endif  // GTEST_HAS_PTHREAD

#if GTEST_HAS_PTHREAD
// gtest-port.h guarantees to #include <pthread.h> when GTEST_HAS_PTHREAD is
// true.
# include <pthread.h>  // NOLINT

// For timespec and nanosleep, used below.
# include <time.h>  // NOLINT
#endif

// Determines whether clone(2) is supported.
// Usually it will only be available on Linux, excluding
// Linux on the Itanium architecture.
// Also see http://linux.die.net/man/2/clone.
#ifndef GTEST_HAS_CLONE
// The user didn't tell us, so we need to figure it out.

# if GTEST_OS_LINUX && !defined(__ia64__)
#  if GTEST_OS_LINUX_ANDROID
// On Android, clone() became available at different API levels for each 32-bit
// architecture.
#    if defined(__LP64__) || \
        (defined(__arm__) && __ANDROID_API__ >= 9) || \
        (defined(__mips__) && __ANDROID_API__ >= 12) || \
        (defined(__i386__) && __ANDROID_API__ >= 17)
#     define GTEST_HAS_CLONE 1
#    else
#     define GTEST_HAS_CLONE 0
#    endif
#  else
#   define GTEST_HAS_CLONE 1
#  endif
# else
#  define GTEST_HAS_CLONE 0
# endif  // GTEST_OS_LINUX && !defined(__ia64__)

#endif  // GTEST_HAS_CLONE

// Determines whether to support stream redirection. This is used to test
// output correctness and to implement death tests.
#ifndef GTEST_HAS_STREAM_REDIRECTION
// By default, we assume that stream redirection is supported on all
// platforms except known mobile ones.
# if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
#  define GTEST_HAS_STREAM_REDIRECTION 0
# else
#  define GTEST_HAS_STREAM_REDIRECTION 1
# endif  // !GTEST_OS_WINDOWS_MOBILE
#endif  // GTEST_HAS_STREAM_REDIRECTION

// Determines whether to support death tests.
// pops up a dialog window that cannot be suppressed programmatically.
#if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS ||             \
     (GTEST_OS_MAC && !GTEST_OS_IOS) ||                                   \
     (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER) || GTEST_OS_WINDOWS_MINGW ||  \
     GTEST_OS_AIX || GTEST_OS_HPUX || GTEST_OS_OPENBSD || GTEST_OS_QNX || \
     GTEST_OS_FREEBSD || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA ||           \
     GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_HAIKU)
# define GTEST_HAS_DEATH_TEST 1
#endif

// Determines whether to support type-driven tests.

// Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0,
// Sun Pro CC, IBM Visual Age, and HP aCC support.
#if defined(__GNUC__) || defined(_MSC_VER) || defined(__SUNPRO_CC) || \
    defined(__IBMCPP__) || defined(__HP_aCC)
# define GTEST_HAS_TYPED_TEST 1
# define GTEST_HAS_TYPED_TEST_P 1
#endif

// Determines whether the system compiler uses UTF-16 for encoding wide strings.
#define GTEST_WIDE_STRING_USES_UTF16_ \
  (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_AIX || GTEST_OS_OS2)

// Determines whether test results can be streamed to a socket.
#if GTEST_OS_LINUX || GTEST_OS_GNU_KFREEBSD || GTEST_OS_DRAGONFLY || \
    GTEST_OS_FREEBSD || GTEST_OS_NETBSD || GTEST_OS_OPENBSD
# define GTEST_CAN_STREAM_RESULTS_ 1
#endif

// Defines some utility macros.

// The GNU compiler emits a warning if nested "if" statements are followed by
// an "else" statement and braces are not used to explicitly disambiguate the
// "else" binding.  This leads to problems with code like:
//
//   if (gate)
//     ASSERT_*(condition) << "Some message";
//
// The "switch (0) case 0:" idiom is used to suppress this.
#ifdef __INTEL_COMPILER
# define GTEST_AMBIGUOUS_ELSE_BLOCKER_
#else
# define GTEST_AMBIGUOUS_ELSE_BLOCKER_ switch (0) case 0: default:  // NOLINT
#endif

// Use this annotation at the end of a struct/class definition to
// prevent the compiler from optimizing away instances that are never
// used.  This is useful when all interesting logic happens inside the
// c'tor and / or d'tor.  Example:
//
//   struct Foo {
//     Foo() { ... }
//   } GTEST_ATTRIBUTE_UNUSED_;
//
// Also use it after a variable or parameter declaration to tell the
// compiler the variable/parameter does not have to be used.
#if defined(__GNUC__) && !defined(COMPILER_ICC)
# define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
#elif defined(__clang__)
# if __has_attribute(unused)
#  define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
# endif
#endif
#ifndef GTEST_ATTRIBUTE_UNUSED_
# define GTEST_ATTRIBUTE_UNUSED_
#endif

// Use this annotation before a function that takes a printf format string.
#if (defined(__GNUC__) || defined(__clang__)) && !defined(COMPILER_ICC)
# if defined(__MINGW_PRINTF_FORMAT)
// MinGW has two different printf implementations. Ensure the format macro
// matches the selected implementation. See
// https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/.
#  define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check) \
       __attribute__((__format__(__MINGW_PRINTF_FORMAT, string_index, \
                                 first_to_check)))
# else
#  define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check) \
       __attribute__((__format__(__printf__, string_index, first_to_check)))
# endif
#else
# define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check)
#endif


// A macro to disallow operator=
// This should be used in the private: declarations for a class.
#define GTEST_DISALLOW_ASSIGN_(type) \
  void operator=(type const &) = delete

// A macro to disallow copy constructor and operator=
// This should be used in the private: declarations for a class.
#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type) \
  type(type const &) = delete; \
  GTEST_DISALLOW_ASSIGN_(type)

// Tell the compiler to warn about unused return values for functions declared
// with this macro.  The macro should be used on function declarations
// following the argument list:
//
//   Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_;
#if defined(__GNUC__) && !defined(COMPILER_ICC)
# define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result))
#else
# define GTEST_MUST_USE_RESULT_
#endif  // __GNUC__ && !COMPILER_ICC

// MS C++ compiler emits warning when a conditional expression is compile time
// constant. In some contexts this warning is false positive and needs to be
// suppressed. Use the following two macros in such cases:
//
// GTEST_INTENTIONAL_CONST_COND_PUSH_()
// while (true) {
// GTEST_INTENTIONAL_CONST_COND_POP_()
// }
# define GTEST_INTENTIONAL_CONST_COND_PUSH_() \
    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127)
# define GTEST_INTENTIONAL_CONST_COND_POP_() \
    GTEST_DISABLE_MSC_WARNINGS_POP_()

// Determine whether the compiler supports Microsoft's Structured Exception
// Handling.  This is supported by several Windows compilers but generally
// does not exist on any other system.
#ifndef GTEST_HAS_SEH
// The user didn't tell us, so we need to figure it out.

# if defined(_MSC_VER) || defined(__BORLANDC__)
// These two compilers are known to support SEH.
#  define GTEST_HAS_SEH 1
# else
// Assume no SEH.
#  define GTEST_HAS_SEH 0
# endif

#endif  // GTEST_HAS_SEH

#ifndef GTEST_IS_THREADSAFE

#define GTEST_IS_THREADSAFE                                                 \
  (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ ||                                     \
   (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) || \
   GTEST_HAS_PTHREAD)

#endif  // GTEST_IS_THREADSAFE

// GTEST_API_ qualifies all symbols that must be exported. The definitions below
// are guarded by #ifndef to give embedders a chance to define GTEST_API_ in
// gtest/internal/custom/gtest-port.h
#ifndef GTEST_API_

#ifdef _MSC_VER
# if GTEST_LINKED_AS_SHARED_LIBRARY
#  define GTEST_API_ __declspec(dllimport)
# elif GTEST_CREATE_SHARED_LIBRARY
#  define GTEST_API_ __declspec(dllexport)
# endif
#elif __GNUC__ >= 4 || defined(__clang__)
# define GTEST_API_ __attribute__((visibility ("default")))
#endif  // _MSC_VER

#endif  // GTEST_API_

#ifndef GTEST_API_
# define GTEST_API_
#endif  // GTEST_API_

#ifndef GTEST_DEFAULT_DEATH_TEST_STYLE
# define GTEST_DEFAULT_DEATH_TEST_STYLE  "fast"
#endif  // GTEST_DEFAULT_DEATH_TEST_STYLE

#ifdef __GNUC__
// Ask the compiler to never inline a given function.
# define GTEST_NO_INLINE_ __attribute__((noinline))
#else
# define GTEST_NO_INLINE_
#endif

// _LIBCPP_VERSION is defined by the libc++ library from the LLVM project.
#if !defined(GTEST_HAS_CXXABI_H_)
# if defined(__GLIBCXX__) || (defined(_LIBCPP_VERSION) && !defined(_MSC_VER))
#  define GTEST_HAS_CXXABI_H_ 1
# else
#  define GTEST_HAS_CXXABI_H_ 0
# endif
#endif

// A function level attribute to disable checking for use of uninitialized
// memory when built with MemorySanitizer.
#if defined(__clang__)
# if __has_feature(memory_sanitizer)
#  define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ \
       __attribute__((no_sanitize_memory))
# else
#  define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
# endif  // __has_feature(memory_sanitizer)
#else
# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
#endif  // __clang__

// A function level attribute to disable AddressSanitizer instrumentation.
#if defined(__clang__)
# if __has_feature(address_sanitizer)
#  define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ \
       __attribute__((no_sanitize_address))
# else
#  define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
# endif  // __has_feature(address_sanitizer)
#else
# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
#endif  // __clang__

// A function level attribute to disable HWAddressSanitizer instrumentation.
#if defined(__clang__)
# if __has_feature(hwaddress_sanitizer)
#  define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_ \
       __attribute__((no_sanitize("hwaddress")))
# else
#  define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
# endif  // __has_feature(hwaddress_sanitizer)
#else
# define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
#endif  // __clang__

// A function level attribute to disable ThreadSanitizer instrumentation.
#if defined(__clang__)
# if __has_feature(thread_sanitizer)
#  define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ \
       __attribute__((no_sanitize_thread))
# else
#  define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
# endif  // __has_feature(thread_sanitizer)
#else
# define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
#endif  // __clang__

namespace testing {

class Message;

// Legacy imports for backwards compatibility.
// New code should use std:: names directly.
using std::get;
using std::make_tuple;
using std::tuple;
using std::tuple_element;
using std::tuple_size;

namespace internal {

// A secret type that Google Test users don't know about.  It has no
// definition on purpose.  Therefore it's impossible to create a
// Secret object, which is what we want.
class Secret;

// The GTEST_COMPILE_ASSERT_ is a legacy macro used to verify that a compile
// time expression is true (in new code, use static_assert instead). For
// example, you could use it to verify the size of a static array:
//
//   GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES,
//                         names_incorrect_size);
//
// The second argument to the macro must be a valid C++ identifier. If the
// expression is false, compiler will issue an error containing this identifier.
#define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg)

// StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h.
//
// This template is declared, but intentionally undefined.
template <typename T1, typename T2>
struct StaticAssertTypeEqHelper;

template <typename T>
struct StaticAssertTypeEqHelper<T, T> {
  enum { value = true };
};

// Same as std::is_same<>.
template <typename T, typename U>
struct IsSame {
  enum { value = false };
};
template <typename T>
struct IsSame<T, T> {
  enum { value = true };
};

// Evaluates to the number of elements in 'array'.
#define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0]))

// A helper for suppressing warnings on constant condition.  It just
// returns 'condition'.
GTEST_API_ bool IsTrue(bool condition);

// Defines RE.

#if GTEST_USES_PCRE
// if used, PCRE is injected by custom/gtest-port.h
#elif GTEST_USES_POSIX_RE || GTEST_USES_SIMPLE_RE

// A simple C++ wrapper for <regex.h>.  It uses the POSIX Extended
// Regular Expression syntax.
class GTEST_API_ RE {
 public:
  // A copy constructor is required by the Standard to initialize object
  // references from r-values.
  RE(const RE& other) { Init(other.pattern()); }

  // Constructs an RE from a string.
  RE(const ::std::string& regex) { Init(regex.c_str()); }  // NOLINT

  RE(const char* regex) { Init(regex); }  // NOLINT
  ~RE();

  // Returns the string representation of the regex.
  const char* pattern() const { return pattern_; }

  // FullMatch(str, re) returns true iff regular expression re matches
  // the entire str.
  // PartialMatch(str, re) returns true iff regular expression re
  // matches a substring of str (including str itself).
  static bool FullMatch(const ::std::string& str, const RE& re) {
    return FullMatch(str.c_str(), re);
  }
  static bool PartialMatch(const ::std::string& str, const RE& re) {
    return PartialMatch(str.c_str(), re);
  }

  static bool FullMatch(const char* str, const RE& re);
  static bool PartialMatch(const char* str, const RE& re);

 private:
  void Init(const char* regex);
  const char* pattern_;
  bool is_valid_;

# if GTEST_USES_POSIX_RE

  regex_t full_regex_;     // For FullMatch().
  regex_t partial_regex_;  // For PartialMatch().

# else  // GTEST_USES_SIMPLE_RE

  const char* full_pattern_;  // For FullMatch();

# endif

  GTEST_DISALLOW_ASSIGN_(RE);
};

#endif  // GTEST_USES_PCRE

// Formats a source file path and a line number as they would appear
// in an error message from the compiler used to compile this code.
GTEST_API_ ::std::string FormatFileLocation(const char* file, int line);

// Formats a file location for compiler-independent XML output.
// Although this function is not platform dependent, we put it next to
// FormatFileLocation in order to contrast the two functions.
GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char* file,
                                                               int line);

// Defines logging utilities:
//   GTEST_LOG_(severity) - logs messages at the specified severity level. The
//                          message itself is streamed into the macro.
//   LogToStderr()  - directs all log messages to stderr.
//   FlushInfoLog() - flushes informational log messages.

enum GTestLogSeverity {
  GTEST_INFO,
  GTEST_WARNING,
  GTEST_ERROR,
  GTEST_FATAL
};

// Formats log entry severity, provides a stream object for streaming the
// log message, and terminates the message with a newline when going out of
// scope.
class GTEST_API_ GTestLog {
 public:
  GTestLog(GTestLogSeverity severity, const char* file, int line);

  // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
  ~GTestLog();

  ::std::ostream& GetStream() { return ::std::cerr; }

 private:
  const GTestLogSeverity severity_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestLog);
};

#if !defined(GTEST_LOG_)

# define GTEST_LOG_(severity) \
    ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \
                                  __FILE__, __LINE__).GetStream()

inline void LogToStderr() {}
inline void FlushInfoLog() { fflush(nullptr); }

#endif  // !defined(GTEST_LOG_)

#if !defined(GTEST_CHECK_)
// INTERNAL IMPLEMENTATION - DO NOT USE.
//
// GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition
// is not satisfied.
//  Synopsys:
//    GTEST_CHECK_(boolean_condition);
//     or
//    GTEST_CHECK_(boolean_condition) << "Additional message";
//
//    This checks the condition and if the condition is not satisfied
//    it prints message about the condition violation, including the
//    condition itself, plus additional message streamed into it, if any,
//    and then it aborts the program. It aborts the program irrespective of
//    whether it is built in the debug mode or not.
# define GTEST_CHECK_(condition) \
    GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
    if (::testing::internal::IsTrue(condition)) \
      ; \
    else \
      GTEST_LOG_(FATAL) << "Condition " #condition " failed. "
#endif  // !defined(GTEST_CHECK_)

// An all-mode assert to verify that the given POSIX-style function
// call returns 0 (indicating success).  Known limitation: this
// doesn't expand to a balanced 'if' statement, so enclose the macro
// in {} if you need to use it as the only statement in an 'if'
// branch.
#define GTEST_CHECK_POSIX_SUCCESS_(posix_call) \
  if (const int gtest_error = (posix_call)) \
    GTEST_LOG_(FATAL) << #posix_call << "failed with error " \
                      << gtest_error

// Adds reference to a type if it is not a reference type,
// otherwise leaves it unchanged.  This is the same as
// tr1::add_reference, which is not widely available yet.
template <typename T>
struct AddReference { typedef T& type; };  // NOLINT
template <typename T>
struct AddReference<T&> { typedef T& type; };  // NOLINT

// A handy wrapper around AddReference that works when the argument T
// depends on template parameters.
#define GTEST_ADD_REFERENCE_(T) \
    typename ::testing::internal::AddReference<T>::type

// Transforms "T" into "const T&" according to standard reference collapsing
// rules (this is only needed as a backport for C++98 compilers that do not
// support reference collapsing). Specifically, it transforms:
//
//   char         ==> const char&
//   const char   ==> const char&
//   char&        ==> char&
//   const char&  ==> const char&
//
// Note that the non-const reference will not have "const" added. This is
// standard, and necessary so that "T" can always bind to "const T&".
template <typename T>
struct ConstRef { typedef const T& type; };
template <typename T>
struct ConstRef<T&> { typedef T& type; };

// The argument T must depend on some template parameters.
#define GTEST_REFERENCE_TO_CONST_(T) \
  typename ::testing::internal::ConstRef<T>::type

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// Use ImplicitCast_ as a safe version of static_cast for upcasting in
// the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a
// const Foo*).  When you use ImplicitCast_, the compiler checks that
// the cast is safe.  Such explicit ImplicitCast_s are necessary in
// surprisingly many situations where C++ demands an exact type match
// instead of an argument type convertable to a target type.
//
// The syntax for using ImplicitCast_ is the same as for static_cast:
//
//   ImplicitCast_<ToType>(expr)
//
// ImplicitCast_ would have been part of the C++ standard library,
// but the proposal was submitted too late.  It will probably make
// its way into the language in the future.
//
// This relatively ugly name is intentional. It prevents clashes with
// similar functions users may have (e.g., implicit_cast). The internal
// namespace alone is not enough because the function can be found by ADL.
template<typename To>
inline To ImplicitCast_(To x) { return x; }

// When you upcast (that is, cast a pointer from type Foo to type
// SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts
// always succeed.  When you downcast (that is, cast a pointer from
// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
// how do you know the pointer is really of type SubclassOfFoo?  It
// could be a bare Foo, or of type DifferentSubclassOfFoo.  Thus,
// when you downcast, you should use this macro.  In debug mode, we
// use dynamic_cast<> to double-check the downcast is legal (we die
// if it's not).  In normal mode, we do the efficient static_cast<>
// instead.  Thus, it's important to test in debug mode to make sure
// the cast is legal!
//    This is the only place in the code we should use dynamic_cast<>.
// In particular, you SHOULDN'T be using dynamic_cast<> in order to
// do RTTI (eg code like this:
//    if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
//    if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
// You should design the code some other way not to need this.
//
// This relatively ugly name is intentional. It prevents clashes with
// similar functions users may have (e.g., down_cast). The internal
// namespace alone is not enough because the function can be found by ADL.
template<typename To, typename From>  // use like this: DownCast_<T*>(foo);
inline To DownCast_(From* f) {  // so we only accept pointers
  // Ensures that To is a sub-type of From *.  This test is here only
  // for compile-time type checking, and has no overhead in an
  // optimized build at run-time, as it will be optimized away
  // completely.
  GTEST_INTENTIONAL_CONST_COND_PUSH_()
  if (false) {
  GTEST_INTENTIONAL_CONST_COND_POP_()
  const To to = nullptr;
  ::testing::internal::ImplicitCast_<From*>(to);
  }

#if GTEST_HAS_RTTI
  // RTTI: debug mode only!
  GTEST_CHECK_(f == nullptr || dynamic_cast<To>(f) != nullptr);
#endif
  return static_cast<To>(f);
}

// Downcasts the pointer of type Base to Derived.
// Derived must be a subclass of Base. The parameter MUST
// point to a class of type Derived, not any subclass of it.
// When RTTI is available, the function performs a runtime
// check to enforce this.
template <class Derived, class Base>
Derived* CheckedDowncastToActualType(Base* base) {
#if GTEST_HAS_RTTI
  GTEST_CHECK_(typeid(*base) == typeid(Derived));
#endif

#if GTEST_HAS_DOWNCAST_
  return ::down_cast<Derived*>(base);
#elif GTEST_HAS_RTTI
  return dynamic_cast<Derived*>(base);  // NOLINT
#else
  return static_cast<Derived*>(base);  // Poor man's downcast.
#endif
}

#if GTEST_HAS_STREAM_REDIRECTION

// Defines the stderr capturer:
//   CaptureStdout     - starts capturing stdout.
//   GetCapturedStdout - stops capturing stdout and returns the captured string.
//   CaptureStderr     - starts capturing stderr.
//   GetCapturedStderr - stops capturing stderr and returns the captured string.
//
GTEST_API_ void CaptureStdout();
GTEST_API_ std::string GetCapturedStdout();
GTEST_API_ void CaptureStderr();
GTEST_API_ std::string GetCapturedStderr();

#endif  // GTEST_HAS_STREAM_REDIRECTION
// Returns the size (in bytes) of a file.
GTEST_API_ size_t GetFileSize(FILE* file);

// Reads the entire content of a file as a string.
GTEST_API_ std::string ReadEntireFile(FILE* file);

// All command line arguments.
GTEST_API_ std::vector<std::string> GetArgvs();

#if GTEST_HAS_DEATH_TEST

std::vector<std::string> GetInjectableArgvs();
// Deprecated: pass the args vector by value instead.
void SetInjectableArgvs(const std::vector<std::string>* new_argvs);
void SetInjectableArgvs(const std::vector<std::string>& new_argvs);
void ClearInjectableArgvs();

#endif  // GTEST_HAS_DEATH_TEST

// Defines synchronization primitives.
#if GTEST_IS_THREADSAFE
# if GTEST_HAS_PTHREAD
// Sleeps for (roughly) n milliseconds.  This function is only for testing
// Google Test's own constructs.  Don't use it in user tests, either
// directly or indirectly.
inline void SleepMilliseconds(int n) {
  const timespec time = {
    0,                  // 0 seconds.
    n * 1000L * 1000L,  // And n ms.
  };
  nanosleep(&time, nullptr);
}
# endif  // GTEST_HAS_PTHREAD

# if GTEST_HAS_NOTIFICATION_
// Notification has already been imported into the namespace.
// Nothing to do here.

# elif GTEST_HAS_PTHREAD
// Allows a controller thread to pause execution of newly created
// threads until notified.  Instances of this class must be created
// and destroyed in the controller thread.
//
// This class is only for testing Google Test's own constructs. Do not
// use it in user tests, either directly or indirectly.
class Notification {
 public:
  Notification() : notified_(false) {
    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
  }
  ~Notification() {
    pthread_mutex_destroy(&mutex_);
  }

  // Notifies all threads created with this notification to start. Must
  // be called from the controller thread.
  void Notify() {
    pthread_mutex_lock(&mutex_);
    notified_ = true;
    pthread_mutex_unlock(&mutex_);
  }

  // Blocks until the controller thread notifies. Must be called from a test
  // thread.
  void WaitForNotification() {
    for (;;) {
      pthread_mutex_lock(&mutex_);
      const bool notified = notified_;
      pthread_mutex_unlock(&mutex_);
      if (notified)
        break;
      SleepMilliseconds(10);
    }
  }

 private:
  pthread_mutex_t mutex_;
  bool notified_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
};

# elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT

GTEST_API_ void SleepMilliseconds(int n);

// Provides leak-safe Windows kernel handle ownership.
// Used in death tests and in threading support.
class GTEST_API_ AutoHandle {
 public:
  // Assume that Win32 HANDLE type is equivalent to void*. Doing so allows us to
  // avoid including <windows.h> in this header file. Including <windows.h> is
  // undesirable because it defines a lot of symbols and macros that tend to
  // conflict with client code. This assumption is verified by
  // WindowsTypesTest.HANDLEIsVoidStar.
  typedef void* Handle;
  AutoHandle();
  explicit AutoHandle(Handle handle);

  ~AutoHandle();

  Handle Get() const;
  void Reset();
  void Reset(Handle handle);

 private:
  // Returns true iff the handle is a valid handle object that can be closed.
  bool IsCloseable() const;

  Handle handle_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(AutoHandle);
};

// Allows a controller thread to pause execution of newly created
// threads until notified.  Instances of this class must be created
// and destroyed in the controller thread.
//
// This class is only for testing Google Test's own constructs. Do not
// use it in user tests, either directly or indirectly.
class GTEST_API_ Notification {
 public:
  Notification();
  void Notify();
  void WaitForNotification();

 private:
  AutoHandle event_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
};
# endif  // GTEST_HAS_NOTIFICATION_

// On MinGW, we can have both GTEST_OS_WINDOWS and GTEST_HAS_PTHREAD
// defined, but we don't want to use MinGW's pthreads implementation, which
// has conformance problems with some versions of the POSIX standard.
# if GTEST_HAS_PTHREAD && !GTEST_OS_WINDOWS_MINGW

// As a C-function, ThreadFuncWithCLinkage cannot be templated itself.
// Consequently, it cannot select a correct instantiation of ThreadWithParam
// in order to call its Run(). Introducing ThreadWithParamBase as a
// non-templated base class for ThreadWithParam allows us to bypass this
// problem.
class ThreadWithParamBase {
 public:
  virtual ~ThreadWithParamBase() {}
  virtual void Run() = 0;
};

// pthread_create() accepts a pointer to a function type with the C linkage.
// According to the Standard (7.5/1), function types with different linkages
// are different even if they are otherwise identical.  Some compilers (for
// example, SunStudio) treat them as different types.  Since class methods
// cannot be defined with C-linkage we need to define a free C-function to
// pass into pthread_create().
extern "C" inline void* ThreadFuncWithCLinkage(void* thread) {
  static_cast<ThreadWithParamBase*>(thread)->Run();
  return nullptr;
}

// Helper class for testing Google Test's multi-threading constructs.
// To use it, write:
//
//   void ThreadFunc(int param) { /* Do things with param */ }
//   Notification thread_can_start;
//   ...
//   // The thread_can_start parameter is optional; you can supply NULL.
//   ThreadWithParam<int> thread(&ThreadFunc, 5, &thread_can_start);
//   thread_can_start.Notify();
//
// These classes are only for testing Google Test's own constructs. Do
// not use them in user tests, either directly or indirectly.
template <typename T>
class ThreadWithParam : public ThreadWithParamBase {
 public:
  typedef void UserThreadFunc(T);

  ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start)
      : func_(func),
        param_(param),
        thread_can_start_(thread_can_start),
        finished_(false) {
    ThreadWithParamBase* const base = this;
    // The thread can be created only after all fields except thread_
    // have been initialized.
    GTEST_CHECK_POSIX_SUCCESS_(
        pthread_create(&thread_, nullptr, &ThreadFuncWithCLinkage, base));
  }
  ~ThreadWithParam() override { Join(); }

  void Join() {
    if (!finished_) {
      GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, nullptr));
      finished_ = true;
    }
  }

  void Run() override {
    if (thread_can_start_ != nullptr) thread_can_start_->WaitForNotification();
    func_(param_);
  }

 private:
  UserThreadFunc* const func_;  // User-supplied thread function.
  const T param_;  // User-supplied parameter to the thread function.
  // When non-NULL, used to block execution until the controller thread
  // notifies.
  Notification* const thread_can_start_;
  bool finished_;  // true iff we know that the thread function has finished.
  pthread_t thread_;  // The native thread object.

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
};
# endif  // !GTEST_OS_WINDOWS && GTEST_HAS_PTHREAD ||
         // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_

# if GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
// Mutex and ThreadLocal have already been imported into the namespace.
// Nothing to do here.

# elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT

// Mutex implements mutex on Windows platforms.  It is used in conjunction
// with class MutexLock:
//
//   Mutex mutex;
//   ...
//   MutexLock lock(&mutex);  // Acquires the mutex and releases it at the
//                            // end of the current scope.
//
// A static Mutex *must* be defined or declared using one of the following
// macros:
//   GTEST_DEFINE_STATIC_MUTEX_(g_some_mutex);
//   GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex);
//
// (A non-static Mutex is defined/declared in the usual way).
class GTEST_API_ Mutex {
 public:
  enum MutexType { kStatic = 0, kDynamic = 1 };
  // We rely on kStaticMutex being 0 as it is to what the linker initializes
  // type_ in static mutexes.  critical_section_ will be initialized lazily
  // in ThreadSafeLazyInit().
  enum StaticConstructorSelector { kStaticMutex = 0 };

  // This constructor intentionally does nothing.  It relies on type_ being
  // statically initialized to 0 (effectively setting it to kStatic) and on
  // ThreadSafeLazyInit() to lazily initialize the rest of the members.
  explicit Mutex(StaticConstructorSelector /*dummy*/) {}

  Mutex();
  ~Mutex();

  void Lock();

  void Unlock();

  // Does nothing if the current thread holds the mutex. Otherwise, crashes
  // with high probability.
  void AssertHeld();

 private:
  // Initializes owner_thread_id_ and critical_section_ in static mutexes.
  void ThreadSafeLazyInit();

  // Per https://blogs.msdn.microsoft.com/oldnewthing/20040223-00/?p=40503,
  // we assume that 0 is an invalid value for thread IDs.
  unsigned int owner_thread_id_;

  // For static mutexes, we rely on these members being initialized to zeros
  // by the linker.
  MutexType type_;
  long critical_section_init_phase_;  // NOLINT
  GTEST_CRITICAL_SECTION* critical_section_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex);
};

# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
    extern ::testing::internal::Mutex mutex

# define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
    ::testing::internal::Mutex mutex(::testing::internal::Mutex::kStaticMutex)

// We cannot name this class MutexLock because the ctor declaration would
// conflict with a macro named MutexLock, which is defined on some
// platforms. That macro is used as a defensive measure to prevent against
// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
// "MutexLock l(&mu)".  Hence the typedef trick below.
class GTestMutexLock {
 public:
  explicit GTestMutexLock(Mutex* mutex)
      : mutex_(mutex) { mutex_->Lock(); }

  ~GTestMutexLock() { mutex_->Unlock(); }

 private:
  Mutex* const mutex_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock);
};

typedef GTestMutexLock MutexLock;

// Base class for ValueHolder<T>.  Allows a caller to hold and delete a value
// without knowing its type.
class ThreadLocalValueHolderBase {
 public:
  virtual ~ThreadLocalValueHolderBase() {}
};

// Provides a way for a thread to send notifications to a ThreadLocal
// regardless of its parameter type.
class ThreadLocalBase {
 public:
  // Creates a new ValueHolder<T> object holding a default value passed to
  // this ThreadLocal<T>'s constructor and returns it.  It is the caller's
  // responsibility not to call this when the ThreadLocal<T> instance already
  // has a value on the current thread.
  virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const = 0;

 protected:
  ThreadLocalBase() {}
  virtual ~ThreadLocalBase() {}

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocalBase);
};

// Maps a thread to a set of ThreadLocals that have values instantiated on that
// thread and notifies them when the thread exits.  A ThreadLocal instance is
// expected to persist until all threads it has values on have terminated.
class GTEST_API_ ThreadLocalRegistry {
 public:
  // Registers thread_local_instance as having value on the current thread.
  // Returns a value that can be used to identify the thread from other threads.
  static ThreadLocalValueHolderBase* GetValueOnCurrentThread(
      const ThreadLocalBase* thread_local_instance);

  // Invoked when a ThreadLocal instance is destroyed.
  static void OnThreadLocalDestroyed(
      const ThreadLocalBase* thread_local_instance);
};

class GTEST_API_ ThreadWithParamBase {
 public:
  void Join();

 protected:
  class Runnable {
   public:
    virtual ~Runnable() {}
    virtual void Run() = 0;
  };

  ThreadWithParamBase(Runnable *runnable, Notification* thread_can_start);
  virtual ~ThreadWithParamBase();

 private:
  AutoHandle thread_;
};

// Helper class for testing Google Test's multi-threading constructs.
template <typename T>
class ThreadWithParam : public ThreadWithParamBase {
 public:
  typedef void UserThreadFunc(T);

  ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start)
      : ThreadWithParamBase(new RunnableImpl(func, param), thread_can_start) {
  }
  virtual ~ThreadWithParam() {}

 private:
  class RunnableImpl : public Runnable {
   public:
    RunnableImpl(UserThreadFunc* func, T param)
        : func_(func),
          param_(param) {
    }
    virtual ~RunnableImpl() {}
    virtual void Run() {
      func_(param_);
    }

   private:
    UserThreadFunc* const func_;
    const T param_;

    GTEST_DISALLOW_COPY_AND_ASSIGN_(RunnableImpl);
  };

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
};

// Implements thread-local storage on Windows systems.
//
//   // Thread 1
//   ThreadLocal<int> tl(100);  // 100 is the default value for each thread.
//
//   // Thread 2
//   tl.set(150);  // Changes the value for thread 2 only.
//   EXPECT_EQ(150, tl.get());
//
//   // Thread 1
//   EXPECT_EQ(100, tl.get());  // In thread 1, tl has the original value.
//   tl.set(200);
//   EXPECT_EQ(200, tl.get());
//
// The template type argument T must have a public copy constructor.
// In addition, the default ThreadLocal constructor requires T to have
// a public default constructor.
//
// The users of a TheadLocal instance have to make sure that all but one
// threads (including the main one) using that instance have exited before
// destroying it. Otherwise, the per-thread objects managed for them by the
// ThreadLocal instance are not guaranteed to be destroyed on all platforms.
//
// Google Test only uses global ThreadLocal objects.  That means they
// will die after main() has returned.  Therefore, no per-thread
// object managed by Google Test will be leaked as long as all threads
// using Google Test have exited when main() returns.
template <typename T>
class ThreadLocal : public ThreadLocalBase {
 public:
  ThreadLocal() : default_factory_(new DefaultValueHolderFactory()) {}
  explicit ThreadLocal(const T& value)
      : default_factory_(new InstanceValueHolderFactory(value)) {}

  ~ThreadLocal() { ThreadLocalRegistry::OnThreadLocalDestroyed(this); }

  T* pointer() { return GetOrCreateValue(); }
  const T* pointer() const { return GetOrCreateValue(); }
  const T& get() const { return *pointer(); }
  void set(const T& value) { *pointer() = value; }

 private:
  // Holds a value of T.  Can be deleted via its base class without the caller
  // knowing the type of T.
  class ValueHolder : public ThreadLocalValueHolderBase {
   public:
    ValueHolder() : value_() {}
    explicit ValueHolder(const T& value) : value_(value) {}

    T* pointer() { return &value_; }

   private:
    T value_;
    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
  };


  T* GetOrCreateValue() const {
    return static_cast<ValueHolder*>(
        ThreadLocalRegistry::GetValueOnCurrentThread(this))->pointer();
  }

  virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const {
    return default_factory_->MakeNewHolder();
  }

  class ValueHolderFactory {
   public:
    ValueHolderFactory() {}
    virtual ~ValueHolderFactory() {}
    virtual ValueHolder* MakeNewHolder() const = 0;

   private:
    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory);
  };

  class DefaultValueHolderFactory : public ValueHolderFactory {
   public:
    DefaultValueHolderFactory() {}
    virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }

   private:
    GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
  };

  class InstanceValueHolderFactory : public ValueHolderFactory {
   public:
    explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
    virtual ValueHolder* MakeNewHolder() const {
      return new ValueHolder(value_);
    }

   private:
    const T value_;  // The value for each thread.

    GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
  };

  std::unique_ptr<ValueHolderFactory> default_factory_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
};

# elif GTEST_HAS_PTHREAD

// MutexBase and Mutex implement mutex on pthreads-based platforms.
class MutexBase {
 public:
  // Acquires this mutex.
  void Lock() {
    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_));
    owner_ = pthread_self();
    has_owner_ = true;
  }

  // Releases this mutex.
  void Unlock() {
    // Since the lock is being released the owner_ field should no longer be
    // considered valid. We don't protect writing to has_owner_ here, as it's
    // the caller's responsibility to ensure that the current thread holds the
    // mutex when this is called.
    has_owner_ = false;
    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&mutex_));
  }

  // Does nothing if the current thread holds the mutex. Otherwise, crashes
  // with high probability.
  void AssertHeld() const {
    GTEST_CHECK_(has_owner_ && pthread_equal(owner_, pthread_self()))
        << "The current thread is not holding the mutex @" << this;
  }

  // A static mutex may be used before main() is entered.  It may even
  // be used before the dynamic initialization stage.  Therefore we
  // must be able to initialize a static mutex object at link time.
  // This means MutexBase has to be a POD and its member variables
  // have to be public.
 public:
  pthread_mutex_t mutex_;  // The underlying pthread mutex.
  // has_owner_ indicates whether the owner_ field below contains a valid thread
  // ID and is therefore safe to inspect (e.g., to use in pthread_equal()). All
  // accesses to the owner_ field should be protected by a check of this field.
  // An alternative might be to memset() owner_ to all zeros, but there's no
  // guarantee that a zero'd pthread_t is necessarily invalid or even different
  // from pthread_self().
  bool has_owner_;
  pthread_t owner_;  // The thread holding the mutex.
};

// Forward-declares a static mutex.
#  define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
     extern ::testing::internal::MutexBase mutex

// Defines and statically (i.e. at link time) initializes a static mutex.
// The initialization list here does not explicitly initialize each field,
// instead relying on default initialization for the unspecified fields. In
// particular, the owner_ field (a pthread_t) is not explicitly initialized.
// This allows initialization to work whether pthread_t is a scalar or struct.
// The flag -Wmissing-field-initializers must not be specified for this to work.
#define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
  ::testing::internal::MutexBase mutex = {PTHREAD_MUTEX_INITIALIZER, false, 0}

// The Mutex class can only be used for mutexes created at runtime. It
// shares its API with MutexBase otherwise.
class Mutex : public MutexBase {
 public:
  Mutex() {
    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
    has_owner_ = false;
  }
  ~Mutex() {
    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&mutex_));
  }

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex);
};

// We cannot name this class MutexLock because the ctor declaration would
// conflict with a macro named MutexLock, which is defined on some
// platforms. That macro is used as a defensive measure to prevent against
// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
// "MutexLock l(&mu)".  Hence the typedef trick below.
class GTestMutexLock {
 public:
  explicit GTestMutexLock(MutexBase* mutex)
      : mutex_(mutex) { mutex_->Lock(); }

  ~GTestMutexLock() { mutex_->Unlock(); }

 private:
  MutexBase* const mutex_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock);
};

typedef GTestMutexLock MutexLock;

// Helpers for ThreadLocal.

// pthread_key_create() requires DeleteThreadLocalValue() to have
// C-linkage.  Therefore it cannot be templatized to access
// ThreadLocal<T>.  Hence the need for class
// ThreadLocalValueHolderBase.
class ThreadLocalValueHolderBase {
 public:
  virtual ~ThreadLocalValueHolderBase() {}
};

// Called by pthread to delete thread-local data stored by
// pthread_setspecific().
extern "C" inline void DeleteThreadLocalValue(void* value_holder) {
  delete static_cast<ThreadLocalValueHolderBase*>(value_holder);
}

// Implements thread-local storage on pthreads-based systems.
template <typename T>
class GTEST_API_ ThreadLocal {
 public:
  ThreadLocal()
      : key_(CreateKey()), default_factory_(new DefaultValueHolderFactory()) {}
  explicit ThreadLocal(const T& value)
      : key_(CreateKey()),
        default_factory_(new InstanceValueHolderFactory(value)) {}

  ~ThreadLocal() {
    // Destroys the managed object for the current thread, if any.
    DeleteThreadLocalValue(pthread_getspecific(key_));

    // Releases resources associated with the key.  This will *not*
    // delete managed objects for other threads.
    GTEST_CHECK_POSIX_SUCCESS_(pthread_key_delete(key_));
  }

  T* pointer() { return GetOrCreateValue(); }
  const T* pointer() const { return GetOrCreateValue(); }
  const T& get() const { return *pointer(); }
  void set(const T& value) { *pointer() = value; }

 private:
  // Holds a value of type T.
  class ValueHolder : public ThreadLocalValueHolderBase {
   public:
    ValueHolder() : value_() {}
    explicit ValueHolder(const T& value) : value_(value) {}

    T* pointer() { return &value_; }

   private:
    T value_;
    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
  };

  static pthread_key_t CreateKey() {
    pthread_key_t key;
    // When a thread exits, DeleteThreadLocalValue() will be called on
    // the object managed for that thread.
    GTEST_CHECK_POSIX_SUCCESS_(
        pthread_key_create(&key, &DeleteThreadLocalValue));
    return key;
  }

  T* GetOrCreateValue() const {
    ThreadLocalValueHolderBase* const holder =
        static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_));
    if (holder != nullptr) {
      return CheckedDowncastToActualType<ValueHolder>(holder)->pointer();
    }

    ValueHolder* const new_holder = default_factory_->MakeNewHolder();
    ThreadLocalValueHolderBase* const holder_base = new_holder;
    GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base));
    return new_holder->pointer();
  }

  class ValueHolderFactory {
   public:
    ValueHolderFactory() {}
    virtual ~ValueHolderFactory() {}
    virtual ValueHolder* MakeNewHolder() const = 0;

   private:
    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory);
  };

  class DefaultValueHolderFactory : public ValueHolderFactory {
   public:
    DefaultValueHolderFactory() {}
    virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }

   private:
    GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
  };

  class InstanceValueHolderFactory : public ValueHolderFactory {
   public:
    explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
    virtual ValueHolder* MakeNewHolder() const {
      return new ValueHolder(value_);
    }

   private:
    const T value_;  // The value for each thread.

    GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
  };

  // A key pthreads uses for looking up per-thread values.
  const pthread_key_t key_;
  std::unique_ptr<ValueHolderFactory> default_factory_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
};

# endif  // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_

#else  // GTEST_IS_THREADSAFE

// A dummy implementation of synchronization primitives (mutex, lock,
// and thread-local variable).  Necessary for compiling Google Test where
// mutex is not supported - using Google Test in multiple threads is not
// supported on such platforms.

class Mutex {
 public:
  Mutex() {}
  void Lock() {}
  void Unlock() {}
  void AssertHeld() const {}
};

# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
  extern ::testing::internal::Mutex mutex

# define GTEST_DEFINE_STATIC_MUTEX_(mutex) ::testing::internal::Mutex mutex

// We cannot name this class MutexLock because the ctor declaration would
// conflict with a macro named MutexLock, which is defined on some
// platforms. That macro is used as a defensive measure to prevent against
// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
// "MutexLock l(&mu)".  Hence the typedef trick below.
class GTestMutexLock {
 public:
  explicit GTestMutexLock(Mutex*) {}  // NOLINT
};

typedef GTestMutexLock MutexLock;

template <typename T>
class GTEST_API_ ThreadLocal {
 public:
  ThreadLocal() : value_() {}
  explicit ThreadLocal(const T& value) : value_(value) {}
  T* pointer() { return &value_; }
  const T* pointer() const { return &value_; }
  const T& get() const { return value_; }
  void set(const T& value) { value_ = value; }
 private:
  T value_;
};

#endif  // GTEST_IS_THREADSAFE

// Returns the number of threads running in the process, or 0 to indicate that
// we cannot detect it.
GTEST_API_ size_t GetThreadCount();

template <bool bool_value>
struct bool_constant {
  typedef bool_constant<bool_value> type;
  static const bool value = bool_value;
};
template <bool bool_value> const bool bool_constant<bool_value>::value;

typedef bool_constant<false> false_type;
typedef bool_constant<true> true_type;

template <typename T, typename U>
struct is_same : public false_type {};

template <typename T>
struct is_same<T, T> : public true_type {};

template <typename Iterator>
struct IteratorTraits {
  typedef typename Iterator::value_type value_type;
};


template <typename T>
struct IteratorTraits<T*> {
  typedef T value_type;
};

template <typename T>
struct IteratorTraits<const T*> {
  typedef T value_type;
};

#if GTEST_OS_WINDOWS
# define GTEST_PATH_SEP_ "\\"
# define GTEST_HAS_ALT_PATH_SEP_ 1
// The biggest signed integer type the compiler supports.
typedef __int64 BiggestInt;
#else
# define GTEST_PATH_SEP_ "/"
# define GTEST_HAS_ALT_PATH_SEP_ 0
typedef long long BiggestInt;  // NOLINT
#endif  // GTEST_OS_WINDOWS

// Utilities for char.

// isspace(int ch) and friends accept an unsigned char or EOF.  char
// may be signed, depending on the compiler (or compiler flags).
// Therefore we need to cast a char to unsigned char before calling
// isspace(), etc.

inline bool IsAlpha(char ch) {
  return isalpha(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsAlNum(char ch) {
  return isalnum(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsDigit(char ch) {
  return isdigit(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsLower(char ch) {
  return islower(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsSpace(char ch) {
  return isspace(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsUpper(char ch) {
  return isupper(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsXDigit(char ch) {
  return isxdigit(static_cast<unsigned char>(ch)) != 0;
}
inline bool IsXDigit(wchar_t ch) {
  const unsigned char low_byte = static_cast<unsigned char>(ch);
  return ch == low_byte && isxdigit(low_byte) != 0;
}

inline char ToLower(char ch) {
  return static_cast<char>(tolower(static_cast<unsigned char>(ch)));
}
inline char ToUpper(char ch) {
  return static_cast<char>(toupper(static_cast<unsigned char>(ch)));
}

inline std::string StripTrailingSpaces(std::string str) {
  std::string::iterator it = str.end();
  while (it != str.begin() && IsSpace(*--it))
    it = str.erase(it);
  return str;
}

// The testing::internal::posix namespace holds wrappers for common
// POSIX functions.  These wrappers hide the differences between
// Windows/MSVC and POSIX systems.  Since some compilers define these
// standard functions as macros, the wrapper cannot have the same name
// as the wrapped function.

namespace posix {

// Functions with a different name on Windows.

#if GTEST_OS_WINDOWS

typedef struct _stat StatStruct;

# ifdef __BORLANDC__
inline int IsATTY(int fd) { return isatty(fd); }
inline int StrCaseCmp(const char* s1, const char* s2) {
  return stricmp(s1, s2);
}
inline char* StrDup(const char* src) { return strdup(src); }
# else  // !__BORLANDC__
#  if GTEST_OS_WINDOWS_MOBILE
inline int IsATTY(int /* fd */) { return 0; }
#  else
inline int IsATTY(int fd) { return _isatty(fd); }
#  endif  // GTEST_OS_WINDOWS_MOBILE
inline int StrCaseCmp(const char* s1, const char* s2) {
  return _stricmp(s1, s2);
}
inline char* StrDup(const char* src) { return _strdup(src); }
# endif  // __BORLANDC__

# if GTEST_OS_WINDOWS_MOBILE
inline int FileNo(FILE* file) { return reinterpret_cast<int>(_fileno(file)); }
// Stat(), RmDir(), and IsDir() are not needed on Windows CE at this
// time and thus not defined there.
# else
inline int FileNo(FILE* file) { return _fileno(file); }
inline int Stat(const char* path, StatStruct* buf) { return _stat(path, buf); }
inline int RmDir(const char* dir) { return _rmdir(dir); }
inline bool IsDir(const StatStruct& st) {
  return (_S_IFDIR & st.st_mode) != 0;
}
# endif  // GTEST_OS_WINDOWS_MOBILE

#else

typedef struct stat StatStruct;

inline int FileNo(FILE* file) { return fileno(file); }
inline int IsATTY(int fd) { return isatty(fd); }
inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); }
inline int StrCaseCmp(const char* s1, const char* s2) {
  return strcasecmp(s1, s2);
}
inline char* StrDup(const char* src) { return strdup(src); }
inline int RmDir(const char* dir) { return rmdir(dir); }
inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }

#endif  // GTEST_OS_WINDOWS

// Functions deprecated by MSVC 8.0.

GTEST_DISABLE_MSC_DEPRECATED_PUSH_()

inline const char* StrNCpy(char* dest, const char* src, size_t n) {
  return strncpy(dest, src, n);
}

// ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
// StrError() aren't needed on Windows CE at this time and thus not
// defined there.

#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
inline int ChDir(const char* dir) { return chdir(dir); }
#endif
inline FILE* FOpen(const char* path, const char* mode) {
  return fopen(path, mode);
}
#if !GTEST_OS_WINDOWS_MOBILE
inline FILE *FReopen(const char* path, const char* mode, FILE* stream) {
  return freopen(path, mode, stream);
}
inline FILE* FDOpen(int fd, const char* mode) { return fdopen(fd, mode); }
#endif
inline int FClose(FILE* fp) { return fclose(fp); }
#if !GTEST_OS_WINDOWS_MOBILE
inline int Read(int fd, void* buf, unsigned int count) {
  return static_cast<int>(read(fd, buf, count));
}
inline int Write(int fd, const void* buf, unsigned int count) {
  return static_cast<int>(write(fd, buf, count));
}
inline int Close(int fd) { return close(fd); }
inline const char* StrError(int errnum) { return strerror(errnum); }
#endif
inline const char* GetEnv(const char* name) {
#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
  // We are on Windows CE, which has no environment variables.
  static_cast<void>(name);  // To prevent 'unused argument' warning.
  return nullptr;
#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
  // Environment variables which we programmatically clear will be set to the
  // empty string rather than unset (NULL).  Handle that case.
  const char* const env = getenv(name);
  return (env != nullptr && env[0] != '\0') ? env : nullptr;
#else
  return getenv(name);
#endif
}

GTEST_DISABLE_MSC_DEPRECATED_POP_()

#if GTEST_OS_WINDOWS_MOBILE
// Windows CE has no C library. The abort() function is used in
// several places in Google Test. This implementation provides a reasonable
// imitation of standard behaviour.
[[noreturn]] void Abort();
#else
[[noreturn]] inline void Abort() { abort(); }
#endif  // GTEST_OS_WINDOWS_MOBILE

}  // namespace posix

// MSVC "deprecates" snprintf and issues warnings wherever it is used.  In
// order to avoid these warnings, we need to use _snprintf or _snprintf_s on
// MSVC-based platforms.  We map the GTEST_SNPRINTF_ macro to the appropriate
// function in order to achieve that.  We use macro definition here because
// snprintf is a variadic function.
#if _MSC_VER && !GTEST_OS_WINDOWS_MOBILE
// MSVC 2005 and above support variadic macros.
# define GTEST_SNPRINTF_(buffer, size, format, ...) \
     _snprintf_s(buffer, size, size, format, __VA_ARGS__)
#elif defined(_MSC_VER)
// Windows CE does not define _snprintf_s
# define GTEST_SNPRINTF_ _snprintf
#else
# define GTEST_SNPRINTF_ snprintf
#endif

// The maximum number a BiggestInt can represent.  This definition
// works no matter BiggestInt is represented in one's complement or
// two's complement.
//
// We cannot rely on numeric_limits in STL, as __int64 and long long
// are not part of standard C++ and numeric_limits doesn't need to be
// defined for them.
const BiggestInt kMaxBiggestInt =
    ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1));

// This template class serves as a compile-time function from size to
// type.  It maps a size in bytes to a primitive type with that
// size. e.g.
//
//   TypeWithSize<4>::UInt
//
// is typedef-ed to be unsigned int (unsigned integer made up of 4
// bytes).
//
// Such functionality should belong to STL, but I cannot find it
// there.
//
// Google Test uses this class in the implementation of floating-point
// comparison.
//
// For now it only handles UInt (unsigned int) as that's all Google Test
// needs.  Other types can be easily added in the future if need
// arises.
template <size_t size>
class TypeWithSize {
 public:
  // This prevents the user from using TypeWithSize<N> with incorrect
  // values of N.
  typedef void UInt;
};

// The specialization for size 4.
template <>
class TypeWithSize<4> {
 public:
  // unsigned int has size 4 in both gcc and MSVC.
  //
  // As base/basictypes.h doesn't compile on Windows, we cannot use
  // uint32, uint64, and etc here.
  typedef int Int;
  typedef unsigned int UInt;
};

// The specialization for size 8.
template <>
class TypeWithSize<8> {
 public:
#if GTEST_OS_WINDOWS
  typedef __int64 Int;
  typedef unsigned __int64 UInt;
#else
  typedef long long Int;  // NOLINT
  typedef unsigned long long UInt;  // NOLINT
#endif  // GTEST_OS_WINDOWS
};

// Integer types of known sizes.
typedef TypeWithSize<4>::Int Int32;
typedef TypeWithSize<4>::UInt UInt32;
typedef TypeWithSize<8>::Int Int64;
typedef TypeWithSize<8>::UInt UInt64;
typedef TypeWithSize<8>::Int TimeInMillis;  // Represents time in milliseconds.

// Utilities for command line flags and environment variables.

// Macro for referencing flags.
#if !defined(GTEST_FLAG)
# define GTEST_FLAG(name) FLAGS_gtest_##name
#endif  // !defined(GTEST_FLAG)

#if !defined(GTEST_USE_OWN_FLAGFILE_FLAG_)
# define GTEST_USE_OWN_FLAGFILE_FLAG_ 1
#endif  // !defined(GTEST_USE_OWN_FLAGFILE_FLAG_)

#if !defined(GTEST_DECLARE_bool_)
# define GTEST_FLAG_SAVER_ ::testing::internal::GTestFlagSaver

// Macros for declaring flags.
# define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
# define GTEST_DECLARE_int32_(name) \
    GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
# define GTEST_DECLARE_string_(name) \
    GTEST_API_ extern ::std::string GTEST_FLAG(name)

// Macros for defining flags.
# define GTEST_DEFINE_bool_(name, default_val, doc) \
    GTEST_API_ bool GTEST_FLAG(name) = (default_val)
# define GTEST_DEFINE_int32_(name, default_val, doc) \
    GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
# define GTEST_DEFINE_string_(name, default_val, doc) \
    GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val)

#endif  // !defined(GTEST_DECLARE_bool_)

// Thread annotations
#if !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_)
# define GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)
# define GTEST_LOCK_EXCLUDED_(locks)
#endif  // !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_)

// Parses 'str' for a 32-bit signed integer.  If successful, writes the result
// to *value and returns true; otherwise leaves *value unchanged and returns
// false.
bool ParseInt32(const Message& src_text, const char* str, Int32* value);

// Parses a bool/Int32/string from the environment variable
// corresponding to the given Google Test flag.
bool BoolFromGTestEnv(const char* flag, bool default_val);
GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val);
std::string OutputFlagAlsoCheckEnvVar();
const char* StringFromGTestEnv(const char* flag, const char* default_val);

}  // namespace internal
}  // namespace testing

#if !defined(GTEST_INTERNAL_DEPRECATED)

// Internal Macro to mark an API deprecated, for googletest usage only
// Usage: class GTEST_INTERNAL_DEPRECATED(message) MyClass or
// GTEST_INTERNAL_DEPRECATED(message) <return_type> myFunction(); Every usage of
// a deprecated entity will trigger a warning when compiled with
// `-Wdeprecated-declarations` option (clang, gcc, any __GNUC__ compiler).
// For msvc /W3 option will need to be used
// Note that for 'other' compilers this macro evaluates to nothing to prevent
// compilations errors.
#if defined(_MSC_VER)
#define GTEST_INTERNAL_DEPRECATED(message) __declspec(deprecated(message))
#elif defined(__GNUC__)
#define GTEST_INTERNAL_DEPRECATED(message) __attribute__((deprecated(message)))
#else
#define GTEST_INTERNAL_DEPRECATED(message)
#endif

#endif  // !defined(GTEST_INTERNAL_DEPRECATED)

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_

#if GTEST_OS_LINUX
# include <stdlib.h>
# include <sys/types.h>
# include <sys/wait.h>
# include <unistd.h>
#endif  // GTEST_OS_LINUX

#if GTEST_HAS_EXCEPTIONS
# include <stdexcept>
#endif

#include <ctype.h>
#include <float.h>
#include <string.h>
#include <iomanip>
#include <limits>
#include <map>
#include <set>
#include <string>
#include <type_traits>
#include <vector>

// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file defines the Message class.
//
// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
// leave some internal implementation details in this header file.
// They are clearly marked by comments like this:
//
//   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
//
// Such code is NOT meant to be used by a user directly, and is subject
// to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
// program!

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
#define GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_

#include <limits>
#include <memory>


GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

// Ensures that there is at least one operator<< in the global namespace.
// See Message& operator<<(...) below for why.
void operator<<(const testing::internal::Secret&, int);

namespace testing {

// The Message class works like an ostream repeater.
//
// Typical usage:
//
//   1. You stream a bunch of values to a Message object.
//      It will remember the text in a stringstream.
//   2. Then you stream the Message object to an ostream.
//      This causes the text in the Message to be streamed
//      to the ostream.
//
// For example;
//
//   testing::Message foo;
//   foo << 1 << " != " << 2;
//   std::cout << foo;
//
// will print "1 != 2".
//
// Message is not intended to be inherited from.  In particular, its
// destructor is not virtual.
//
// Note that stringstream behaves differently in gcc and in MSVC.  You
// can stream a NULL char pointer to it in the former, but not in the
// latter (it causes an access violation if you do).  The Message
// class hides this difference by treating a NULL char pointer as
// "(null)".
class GTEST_API_ Message {
 private:
  // The type of basic IO manipulators (endl, ends, and flush) for
  // narrow streams.
  typedef std::ostream& (*BasicNarrowIoManip)(std::ostream&);

 public:
  // Constructs an empty Message.
  Message();

  // Copy constructor.
  Message(const Message& msg) : ss_(new ::std::stringstream) {  // NOLINT
    *ss_ << msg.GetString();
  }

  // Constructs a Message from a C-string.
  explicit Message(const char* str) : ss_(new ::std::stringstream) {
    *ss_ << str;
  }

  // Streams a non-pointer value to this object.
  template <typename T>
  inline Message& operator <<(const T& val) {
    // Some libraries overload << for STL containers.  These
    // overloads are defined in the global namespace instead of ::std.
    //
    // C++'s symbol lookup rule (i.e. Koenig lookup) says that these
    // overloads are visible in either the std namespace or the global
    // namespace, but not other namespaces, including the testing
    // namespace which Google Test's Message class is in.
    //
    // To allow STL containers (and other types that has a << operator
    // defined in the global namespace) to be used in Google Test
    // assertions, testing::Message must access the custom << operator
    // from the global namespace.  With this using declaration,
    // overloads of << defined in the global namespace and those
    // visible via Koenig lookup are both exposed in this function.
    using ::operator <<;
    *ss_ << val;
    return *this;
  }

  // Streams a pointer value to this object.
  //
  // This function is an overload of the previous one.  When you
  // stream a pointer to a Message, this definition will be used as it
  // is more specialized.  (The C++ Standard, section
  // [temp.func.order].)  If you stream a non-pointer, then the
  // previous definition will be used.
  //
  // The reason for this overload is that streaming a NULL pointer to
  // ostream is undefined behavior.  Depending on the compiler, you
  // may get "0", "(nil)", "(null)", or an access violation.  To
  // ensure consistent result across compilers, we always treat NULL
  // as "(null)".
  template <typename T>
  inline Message& operator <<(T* const& pointer) {  // NOLINT
    if (pointer == nullptr) {
      *ss_ << "(null)";
    } else {
      *ss_ << pointer;
    }
    return *this;
  }

  // Since the basic IO manipulators are overloaded for both narrow
  // and wide streams, we have to provide this specialized definition
  // of operator <<, even though its body is the same as the
  // templatized version above.  Without this definition, streaming
  // endl or other basic IO manipulators to Message will confuse the
  // compiler.
  Message& operator <<(BasicNarrowIoManip val) {
    *ss_ << val;
    return *this;
  }

  // Instead of 1/0, we want to see true/false for bool values.
  Message& operator <<(bool b) {
    return *this << (b ? "true" : "false");
  }

  // These two overloads allow streaming a wide C string to a Message
  // using the UTF-8 encoding.
  Message& operator <<(const wchar_t* wide_c_str);
  Message& operator <<(wchar_t* wide_c_str);

#if GTEST_HAS_STD_WSTRING
  // Converts the given wide string to a narrow string using the UTF-8
  // encoding, and streams the result to this Message object.
  Message& operator <<(const ::std::wstring& wstr);
#endif  // GTEST_HAS_STD_WSTRING

  // Gets the text streamed to this object so far as an std::string.
  // Each '\0' character in the buffer is replaced with "\\0".
  //
  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
  std::string GetString() const;

 private:
  // We'll hold the text streamed to this object here.
  const std::unique_ptr< ::std::stringstream> ss_;

  // We declare (but don't implement) this to prevent the compiler
  // from implementing the assignment operator.
  void operator=(const Message&);
};

// Streams a Message to an ostream.
inline std::ostream& operator <<(std::ostream& os, const Message& sb) {
  return os << sb.GetString();
}

namespace internal {

// Converts a streamable value to an std::string.  A NULL pointer is
// converted to "(null)".  When the input value is a ::string,
// ::std::string, ::wstring, or ::std::wstring object, each NUL
// character in it is replaced with "\\0".
template <typename T>
std::string StreamableToString(const T& streamable) {
  return (Message() << streamable).GetString();
}

}  // namespace internal
}  // namespace testing

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

#endif  // GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Google Test filepath utilities
//
// This header file declares classes and functions used internally by
// Google Test.  They are subject to change without notice.
//
// This file is #included in gtest/internal/gtest-internal.h.
// Do not include this header file separately!

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_

// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file declares the String class and functions used internally by
// Google Test.  They are subject to change without notice. They should not used
// by code external to Google Test.
//
// This header file is #included by gtest-internal.h.
// It should not be #included by other files.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_

#ifdef __BORLANDC__
// string.h is not guaranteed to provide strcpy on C++ Builder.
# include <mem.h>
#endif

#include <string.h>
#include <string>


namespace testing {
namespace internal {

// String - an abstract class holding static string utilities.
class GTEST_API_ String {
 public:
  // Static utility methods

  // Clones a 0-terminated C string, allocating memory using new.  The
  // caller is responsible for deleting the return value using
  // delete[].  Returns the cloned string, or NULL if the input is
  // NULL.
  //
  // This is different from strdup() in string.h, which allocates
  // memory using malloc().
  static const char* CloneCString(const char* c_str);

#if GTEST_OS_WINDOWS_MOBILE
  // Windows CE does not have the 'ANSI' versions of Win32 APIs. To be
  // able to pass strings to Win32 APIs on CE we need to convert them
  // to 'Unicode', UTF-16.

  // Creates a UTF-16 wide string from the given ANSI string, allocating
  // memory using new. The caller is responsible for deleting the return
  // value using delete[]. Returns the wide string, or NULL if the
  // input is NULL.
  //
  // The wide string is created using the ANSI codepage (CP_ACP) to
  // match the behaviour of the ANSI versions of Win32 calls and the
  // C runtime.
  static LPCWSTR AnsiToUtf16(const char* c_str);

  // Creates an ANSI string from the given wide string, allocating
  // memory using new. The caller is responsible for deleting the return
  // value using delete[]. Returns the ANSI string, or NULL if the
  // input is NULL.
  //
  // The returned string is created using the ANSI codepage (CP_ACP) to
  // match the behaviour of the ANSI versions of Win32 calls and the
  // C runtime.
  static const char* Utf16ToAnsi(LPCWSTR utf16_str);
#endif

  // Compares two C strings.  Returns true iff they have the same content.
  //
  // Unlike strcmp(), this function can handle NULL argument(s).  A
  // NULL C string is considered different to any non-NULL C string,
  // including the empty string.
  static bool CStringEquals(const char* lhs, const char* rhs);

  // Converts a wide C string to a String using the UTF-8 encoding.
  // NULL will be converted to "(null)".  If an error occurred during
  // the conversion, "(failed to convert from wide string)" is
  // returned.
  static std::string ShowWideCString(const wchar_t* wide_c_str);

  // Compares two wide C strings.  Returns true iff they have the same
  // content.
  //
  // Unlike wcscmp(), this function can handle NULL argument(s).  A
  // NULL C string is considered different to any non-NULL C string,
  // including the empty string.
  static bool WideCStringEquals(const wchar_t* lhs, const wchar_t* rhs);

  // Compares two C strings, ignoring case.  Returns true iff they
  // have the same content.
  //
  // Unlike strcasecmp(), this function can handle NULL argument(s).
  // A NULL C string is considered different to any non-NULL C string,
  // including the empty string.
  static bool CaseInsensitiveCStringEquals(const char* lhs,
                                           const char* rhs);

  // Compares two wide C strings, ignoring case.  Returns true iff they
  // have the same content.
  //
  // Unlike wcscasecmp(), this function can handle NULL argument(s).
  // A NULL C string is considered different to any non-NULL wide C string,
  // including the empty string.
  // NB: The implementations on different platforms slightly differ.
  // On windows, this method uses _wcsicmp which compares according to LC_CTYPE
  // environment variable. On GNU platform this method uses wcscasecmp
  // which compares according to LC_CTYPE category of the current locale.
  // On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
  // current locale.
  static bool CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
                                               const wchar_t* rhs);

  // Returns true iff the given string ends with the given suffix, ignoring
  // case. Any string is considered to end with an empty suffix.
  static bool EndsWithCaseInsensitive(
      const std::string& str, const std::string& suffix);

  // Formats an int value as "%02d".
  static std::string FormatIntWidth2(int value);  // "%02d" for width == 2

  // Formats an int value as "%X".
  static std::string FormatHexInt(int value);

  // Formats a byte as "%02X".
  static std::string FormatByte(unsigned char value);

 private:
  String();  // Not meant to be instantiated.
};  // class String

// Gets the content of the stringstream's buffer as an std::string.  Each '\0'
// character in the buffer is replaced with "\\0".
GTEST_API_ std::string StringStreamToString(::std::stringstream* stream);

}  // namespace internal
}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

namespace testing {
namespace internal {

// FilePath - a class for file and directory pathname manipulation which
// handles platform-specific conventions (like the pathname separator).
// Used for helper functions for naming files in a directory for xml output.
// Except for Set methods, all methods are const or static, which provides an
// "immutable value object" -- useful for peace of mind.
// A FilePath with a value ending in a path separator ("like/this/") represents
// a directory, otherwise it is assumed to represent a file. In either case,
// it may or may not represent an actual file or directory in the file system.
// Names are NOT checked for syntax correctness -- no checking for illegal
// characters, malformed paths, etc.

class GTEST_API_ FilePath {
 public:
  FilePath() : pathname_("") { }
  FilePath(const FilePath& rhs) : pathname_(rhs.pathname_) { }

  explicit FilePath(const std::string& pathname) : pathname_(pathname) {
    Normalize();
  }

  FilePath& operator=(const FilePath& rhs) {
    Set(rhs);
    return *this;
  }

  void Set(const FilePath& rhs) {
    pathname_ = rhs.pathname_;
  }

  const std::string& string() const { return pathname_; }
  const char* c_str() const { return pathname_.c_str(); }

  // Returns the current working directory, or "" if unsuccessful.
  static FilePath GetCurrentDir();

  // Given directory = "dir", base_name = "test", number = 0,
  // extension = "xml", returns "dir/test.xml". If number is greater
  // than zero (e.g., 12), returns "dir/test_12.xml".
  // On Windows platform, uses \ as the separator rather than /.
  static FilePath MakeFileName(const FilePath& directory,
                               const FilePath& base_name,
                               int number,
                               const char* extension);

  // Given directory = "dir", relative_path = "test.xml",
  // returns "dir/test.xml".
  // On Windows, uses \ as the separator rather than /.
  static FilePath ConcatPaths(const FilePath& directory,
                              const FilePath& relative_path);

  // Returns a pathname for a file that does not currently exist. The pathname
  // will be directory/base_name.extension or
  // directory/base_name_<number>.extension if directory/base_name.extension
  // already exists. The number will be incremented until a pathname is found
  // that does not already exist.
  // Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'.
  // There could be a race condition if two or more processes are calling this
  // function at the same time -- they could both pick the same filename.
  static FilePath GenerateUniqueFileName(const FilePath& directory,
                                         const FilePath& base_name,
                                         const char* extension);

  // Returns true iff the path is "".
  bool IsEmpty() const { return pathname_.empty(); }

  // If input name has a trailing separator character, removes it and returns
  // the name, otherwise return the name string unmodified.
  // On Windows platform, uses \ as the separator, other platforms use /.
  FilePath RemoveTrailingPathSeparator() const;

  // Returns a copy of the FilePath with the directory part removed.
  // Example: FilePath("path/to/file").RemoveDirectoryName() returns
  // FilePath("file"). If there is no directory part ("just_a_file"), it returns
  // the FilePath unmodified. If there is no file part ("just_a_dir/") it
  // returns an empty FilePath ("").
  // On Windows platform, '\' is the path separator, otherwise it is '/'.
  FilePath RemoveDirectoryName() const;

  // RemoveFileName returns the directory path with the filename removed.
  // Example: FilePath("path/to/file").RemoveFileName() returns "path/to/".
  // If the FilePath is "a_file" or "/a_file", RemoveFileName returns
  // FilePath("./") or, on Windows, FilePath(".\\"). If the filepath does
  // not have a file, like "just/a/dir/", it returns the FilePath unmodified.
  // On Windows platform, '\' is the path separator, otherwise it is '/'.
  FilePath RemoveFileName() const;

  // Returns a copy of the FilePath with the case-insensitive extension removed.
  // Example: FilePath("dir/file.exe").RemoveExtension("EXE") returns
  // FilePath("dir/file"). If a case-insensitive extension is not
  // found, returns a copy of the original FilePath.
  FilePath RemoveExtension(const char* extension) const;

  // Creates directories so that path exists. Returns true if successful or if
  // the directories already exist; returns false if unable to create
  // directories for any reason. Will also return false if the FilePath does
  // not represent a directory (that is, it doesn't end with a path separator).
  bool CreateDirectoriesRecursively() const;

  // Create the directory so that path exists. Returns true if successful or
  // if the directory already exists; returns false if unable to create the
  // directory for any reason, including if the parent directory does not
  // exist. Not named "CreateDirectory" because that's a macro on Windows.
  bool CreateFolder() const;

  // Returns true if FilePath describes something in the file-system,
  // either a file, directory, or whatever, and that something exists.
  bool FileOrDirectoryExists() const;

  // Returns true if pathname describes a directory in the file-system
  // that exists.
  bool DirectoryExists() const;

  // Returns true if FilePath ends with a path separator, which indicates that
  // it is intended to represent a directory. Returns false otherwise.
  // This does NOT check that a directory (or file) actually exists.
  bool IsDirectory() const;

  // Returns true if pathname describes a root directory. (Windows has one
  // root directory per disk drive.)
  bool IsRootDirectory() const;

  // Returns true if pathname describes an absolute path.
  bool IsAbsolutePath() const;

 private:
  // Replaces multiple consecutive separators with a single separator.
  // For example, "bar///foo" becomes "bar/foo". Does not eliminate other
  // redundancies that might be in a pathname involving "." or "..".
  //
  // A pathname with multiple consecutive separators may occur either through
  // user error or as a result of some scripts or APIs that generate a pathname
  // with a trailing separator. On other platforms the same API or script
  // may NOT generate a pathname with a trailing "/". Then elsewhere that
  // pathname may have another "/" and pathname components added to it,
  // without checking for the separator already being there.
  // The script language and operating system may allow paths like "foo//bar"
  // but some of the functions in FilePath will not handle that correctly. In
  // particular, RemoveTrailingPathSeparator() only removes one separator, and
  // it is called in CreateDirectoriesRecursively() assuming that it will change
  // a pathname from directory syntax (trailing separator) to filename syntax.
  //
  // On Windows this method also replaces the alternate path separator '/' with
  // the primary path separator '\\', so that for example "bar\\/\\foo" becomes
  // "bar\\foo".

  void Normalize();

  // Returns a pointer to the last occurence of a valid path separator in
  // the FilePath. On Windows, for example, both '/' and '\' are valid path
  // separators. Returns NULL if no path separator was found.
  const char* FindLastPathSeparator() const;

  std::string pathname_;
};  // class FilePath

}  // namespace internal
}  // namespace testing

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
// This file was GENERATED by command:
//     pump.py gtest-type-util.h.pump
// DO NOT EDIT BY HAND!!!

// Copyright 2008 Google Inc.
// All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Type utilities needed for implementing typed and type-parameterized
// tests.  This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
//
// Currently we support at most 50 types in a list, and at most 50
// type-parameterized tests in one type-parameterized test suite.
// Please contact googletestframework@googlegroups.com if you need
// more.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_


// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
// libstdc++ (which is where cxxabi.h comes from).
# if GTEST_HAS_CXXABI_H_
#  include <cxxabi.h>
# elif defined(__HP_aCC)
#  include <acxx_demangle.h>
# endif  // GTEST_HASH_CXXABI_H_

namespace testing {
namespace internal {

// Canonicalizes a given name with respect to the Standard C++ Library.
// This handles removing the inline namespace within `std` that is
// used by various standard libraries (e.g., `std::__1`).  Names outside
// of namespace std are returned unmodified.
inline std::string CanonicalizeForStdLibVersioning(std::string s) {
  static const char prefix[] = "std::__";
  if (s.compare(0, strlen(prefix), prefix) == 0) {
    std::string::size_type end = s.find("::", strlen(prefix));
    if (end != s.npos) {
      // Erase everything between the initial `std` and the second `::`.
      s.erase(strlen("std"), end - strlen("std"));
    }
  }
  return s;
}

// GetTypeName<T>() returns a human-readable name of type T.
// NB: This function is also used in Google Mock, so don't move it inside of
// the typed-test-only section below.
template <typename T>
std::string GetTypeName() {
# if GTEST_HAS_RTTI

  const char* const name = typeid(T).name();
#  if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC)
  int status = 0;
  // gcc's implementation of typeid(T).name() mangles the type name,
  // so we have to demangle it.
#   if GTEST_HAS_CXXABI_H_
  using abi::__cxa_demangle;
#   endif  // GTEST_HAS_CXXABI_H_
  char* const readable_name = __cxa_demangle(name, nullptr, nullptr, &status);
  const std::string name_str(status == 0 ? readable_name : name);
  free(readable_name);
  return CanonicalizeForStdLibVersioning(name_str);
#  else
  return name;
#  endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC

# else

  return "<type>";

# endif  // GTEST_HAS_RTTI
}

#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

// AssertyTypeEq<T1, T2>::type is defined iff T1 and T2 are the same
// type.  This can be used as a compile-time assertion to ensure that
// two types are equal.

template <typename T1, typename T2>
struct AssertTypeEq;

template <typename T>
struct AssertTypeEq<T, T> {
  typedef bool type;
};

// A unique type used as the default value for the arguments of class
// template Types.  This allows us to simulate variadic templates
// (e.g. Types<int>, Type<int, double>, and etc), which C++ doesn't
// support directly.
struct None {};

// The following family of struct and struct templates are used to
// represent type lists.  In particular, TypesN<T1, T2, ..., TN>
// represents a type list with N types (T1, T2, ..., and TN) in it.
// Except for Types0, every struct in the family has two member types:
// Head for the first type in the list, and Tail for the rest of the
// list.

// The empty type list.
struct Types0 {};

// Type lists of length 1, 2, 3, and so on.

template <typename T1>
struct Types1 {
  typedef T1 Head;
  typedef Types0 Tail;
};
template <typename T1, typename T2>
struct Types2 {
  typedef T1 Head;
  typedef Types1<T2> Tail;
};

template <typename T1, typename T2, typename T3>
struct Types3 {
  typedef T1 Head;
  typedef Types2<T2, T3> Tail;
};

template <typename T1, typename T2, typename T3, typename T4>
struct Types4 {
  typedef T1 Head;
  typedef Types3<T2, T3, T4> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5>
struct Types5 {
  typedef T1 Head;
  typedef Types4<T2, T3, T4, T5> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6>
struct Types6 {
  typedef T1 Head;
  typedef Types5<T2, T3, T4, T5, T6> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7>
struct Types7 {
  typedef T1 Head;
  typedef Types6<T2, T3, T4, T5, T6, T7> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8>
struct Types8 {
  typedef T1 Head;
  typedef Types7<T2, T3, T4, T5, T6, T7, T8> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9>
struct Types9 {
  typedef T1 Head;
  typedef Types8<T2, T3, T4, T5, T6, T7, T8, T9> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10>
struct Types10 {
  typedef T1 Head;
  typedef Types9<T2, T3, T4, T5, T6, T7, T8, T9, T10> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11>
struct Types11 {
  typedef T1 Head;
  typedef Types10<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12>
struct Types12 {
  typedef T1 Head;
  typedef Types11<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13>
struct Types13 {
  typedef T1 Head;
  typedef Types12<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14>
struct Types14 {
  typedef T1 Head;
  typedef Types13<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15>
struct Types15 {
  typedef T1 Head;
  typedef Types14<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16>
struct Types16 {
  typedef T1 Head;
  typedef Types15<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17>
struct Types17 {
  typedef T1 Head;
  typedef Types16<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18>
struct Types18 {
  typedef T1 Head;
  typedef Types17<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19>
struct Types19 {
  typedef T1 Head;
  typedef Types18<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20>
struct Types20 {
  typedef T1 Head;
  typedef Types19<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21>
struct Types21 {
  typedef T1 Head;
  typedef Types20<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22>
struct Types22 {
  typedef T1 Head;
  typedef Types21<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23>
struct Types23 {
  typedef T1 Head;
  typedef Types22<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24>
struct Types24 {
  typedef T1 Head;
  typedef Types23<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25>
struct Types25 {
  typedef T1 Head;
  typedef Types24<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26>
struct Types26 {
  typedef T1 Head;
  typedef Types25<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27>
struct Types27 {
  typedef T1 Head;
  typedef Types26<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28>
struct Types28 {
  typedef T1 Head;
  typedef Types27<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29>
struct Types29 {
  typedef T1 Head;
  typedef Types28<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30>
struct Types30 {
  typedef T1 Head;
  typedef Types29<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31>
struct Types31 {
  typedef T1 Head;
  typedef Types30<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32>
struct Types32 {
  typedef T1 Head;
  typedef Types31<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33>
struct Types33 {
  typedef T1 Head;
  typedef Types32<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34>
struct Types34 {
  typedef T1 Head;
  typedef Types33<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35>
struct Types35 {
  typedef T1 Head;
  typedef Types34<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36>
struct Types36 {
  typedef T1 Head;
  typedef Types35<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37>
struct Types37 {
  typedef T1 Head;
  typedef Types36<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38>
struct Types38 {
  typedef T1 Head;
  typedef Types37<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39>
struct Types39 {
  typedef T1 Head;
  typedef Types38<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40>
struct Types40 {
  typedef T1 Head;
  typedef Types39<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41>
struct Types41 {
  typedef T1 Head;
  typedef Types40<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42>
struct Types42 {
  typedef T1 Head;
  typedef Types41<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43>
struct Types43 {
  typedef T1 Head;
  typedef Types42<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44>
struct Types44 {
  typedef T1 Head;
  typedef Types43<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45>
struct Types45 {
  typedef T1 Head;
  typedef Types44<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44, T45> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46>
struct Types46 {
  typedef T1 Head;
  typedef Types45<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44, T45, T46> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47>
struct Types47 {
  typedef T1 Head;
  typedef Types46<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44, T45, T46, T47> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47, typename T48>
struct Types48 {
  typedef T1 Head;
  typedef Types47<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44, T45, T46, T47, T48> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47, typename T48, typename T49>
struct Types49 {
  typedef T1 Head;
  typedef Types48<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44, T45, T46, T47, T48, T49> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47, typename T48, typename T49, typename T50>
struct Types50 {
  typedef T1 Head;
  typedef Types49<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
      T44, T45, T46, T47, T48, T49, T50> Tail;
};


}  // namespace internal

// We don't want to require the users to write TypesN<...> directly,
// as that would require them to count the length.  Types<...> is much
// easier to write, but generates horrible messages when there is a
// compiler error, as gcc insists on printing out each template
// argument, even if it has the default value (this means Types<int>
// will appear as Types<int, None, None, ..., None> in the compiler
// errors).
//
// Our solution is to combine the best part of the two approaches: a
// user would write Types<T1, ..., TN>, and Google Test will translate
// that to TypesN<T1, ..., TN> internally to make error messages
// readable.  The translation is done by the 'type' member of the
// Types template.
template <typename T1 = internal::None, typename T2 = internal::None,
    typename T3 = internal::None, typename T4 = internal::None,
    typename T5 = internal::None, typename T6 = internal::None,
    typename T7 = internal::None, typename T8 = internal::None,
    typename T9 = internal::None, typename T10 = internal::None,
    typename T11 = internal::None, typename T12 = internal::None,
    typename T13 = internal::None, typename T14 = internal::None,
    typename T15 = internal::None, typename T16 = internal::None,
    typename T17 = internal::None, typename T18 = internal::None,
    typename T19 = internal::None, typename T20 = internal::None,
    typename T21 = internal::None, typename T22 = internal::None,
    typename T23 = internal::None, typename T24 = internal::None,
    typename T25 = internal::None, typename T26 = internal::None,
    typename T27 = internal::None, typename T28 = internal::None,
    typename T29 = internal::None, typename T30 = internal::None,
    typename T31 = internal::None, typename T32 = internal::None,
    typename T33 = internal::None, typename T34 = internal::None,
    typename T35 = internal::None, typename T36 = internal::None,
    typename T37 = internal::None, typename T38 = internal::None,
    typename T39 = internal::None, typename T40 = internal::None,
    typename T41 = internal::None, typename T42 = internal::None,
    typename T43 = internal::None, typename T44 = internal::None,
    typename T45 = internal::None, typename T46 = internal::None,
    typename T47 = internal::None, typename T48 = internal::None,
    typename T49 = internal::None, typename T50 = internal::None>
struct Types {
  typedef internal::Types50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45, T46, T47, T48, T49, T50> type;
};

template <>
struct Types<internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types0 type;
};
template <typename T1>
struct Types<T1, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types1<T1> type;
};
template <typename T1, typename T2>
struct Types<T1, T2, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types2<T1, T2> type;
};
template <typename T1, typename T2, typename T3>
struct Types<T1, T2, T3, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types3<T1, T2, T3> type;
};
template <typename T1, typename T2, typename T3, typename T4>
struct Types<T1, T2, T3, T4, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types4<T1, T2, T3, T4> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5>
struct Types<T1, T2, T3, T4, T5, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types5<T1, T2, T3, T4, T5> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6>
struct Types<T1, T2, T3, T4, T5, T6, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types6<T1, T2, T3, T4, T5, T6> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7>
struct Types<T1, T2, T3, T4, T5, T6, T7, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types7<T1, T2, T3, T4, T5, T6, T7> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types8<T1, T2, T3, T4, T5, T6, T7, T8> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types9<T1, T2, T3, T4, T5, T6, T7, T8, T9> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
      T12> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
      T26> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
      T40> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, internal::None,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None, internal::None> {
  typedef internal::Types43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    internal::None, internal::None, internal::None, internal::None,
    internal::None, internal::None> {
  typedef internal::Types44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
    internal::None, internal::None, internal::None, internal::None,
    internal::None> {
  typedef internal::Types45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
    T46, internal::None, internal::None, internal::None, internal::None> {
  typedef internal::Types46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45, T46> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
    T46, T47, internal::None, internal::None, internal::None> {
  typedef internal::Types47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45, T46, T47> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47, typename T48>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
    T46, T47, T48, internal::None, internal::None> {
  typedef internal::Types48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45, T46, T47, T48> type;
};
template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47, typename T48, typename T49>
struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
    T46, T47, T48, T49, internal::None> {
  typedef internal::Types49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45, T46, T47, T48, T49> type;
};

namespace internal {

# define GTEST_TEMPLATE_ template <typename T> class

// The template "selector" struct TemplateSel<Tmpl> is used to
// represent Tmpl, which must be a class template with one type
// parameter, as a type.  TemplateSel<Tmpl>::Bind<T>::type is defined
// as the type Tmpl<T>.  This allows us to actually instantiate the
// template "selected" by TemplateSel<Tmpl>.
//
// This trick is necessary for simulating typedef for class templates,
// which C++ doesn't support directly.
template <GTEST_TEMPLATE_ Tmpl>
struct TemplateSel {
  template <typename T>
  struct Bind {
    typedef Tmpl<T> type;
  };
};

# define GTEST_BIND_(TmplSel, T) \
  TmplSel::template Bind<T>::type

// A unique struct template used as the default value for the
// arguments of class template Templates.  This allows us to simulate
// variadic templates (e.g. Templates<int>, Templates<int, double>,
// and etc), which C++ doesn't support directly.
template <typename T>
struct NoneT {};

// The following family of struct and struct templates are used to
// represent template lists.  In particular, TemplatesN<T1, T2, ...,
// TN> represents a list of N templates (T1, T2, ..., and TN).  Except
// for Templates0, every struct in the family has two member types:
// Head for the selector of the first template in the list, and Tail
// for the rest of the list.

// The empty template list.
struct Templates0 {};

// Template lists of length 1, 2, 3, and so on.

template <GTEST_TEMPLATE_ T1>
struct Templates1 {
  typedef TemplateSel<T1> Head;
  typedef Templates0 Tail;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2>
struct Templates2 {
  typedef TemplateSel<T1> Head;
  typedef Templates1<T2> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3>
struct Templates3 {
  typedef TemplateSel<T1> Head;
  typedef Templates2<T2, T3> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4>
struct Templates4 {
  typedef TemplateSel<T1> Head;
  typedef Templates3<T2, T3, T4> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5>
struct Templates5 {
  typedef TemplateSel<T1> Head;
  typedef Templates4<T2, T3, T4, T5> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6>
struct Templates6 {
  typedef TemplateSel<T1> Head;
  typedef Templates5<T2, T3, T4, T5, T6> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7>
struct Templates7 {
  typedef TemplateSel<T1> Head;
  typedef Templates6<T2, T3, T4, T5, T6, T7> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8>
struct Templates8 {
  typedef TemplateSel<T1> Head;
  typedef Templates7<T2, T3, T4, T5, T6, T7, T8> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9>
struct Templates9 {
  typedef TemplateSel<T1> Head;
  typedef Templates8<T2, T3, T4, T5, T6, T7, T8, T9> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10>
struct Templates10 {
  typedef TemplateSel<T1> Head;
  typedef Templates9<T2, T3, T4, T5, T6, T7, T8, T9, T10> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11>
struct Templates11 {
  typedef TemplateSel<T1> Head;
  typedef Templates10<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12>
struct Templates12 {
  typedef TemplateSel<T1> Head;
  typedef Templates11<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13>
struct Templates13 {
  typedef TemplateSel<T1> Head;
  typedef Templates12<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14>
struct Templates14 {
  typedef TemplateSel<T1> Head;
  typedef Templates13<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15>
struct Templates15 {
  typedef TemplateSel<T1> Head;
  typedef Templates14<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16>
struct Templates16 {
  typedef TemplateSel<T1> Head;
  typedef Templates15<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17>
struct Templates17 {
  typedef TemplateSel<T1> Head;
  typedef Templates16<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18>
struct Templates18 {
  typedef TemplateSel<T1> Head;
  typedef Templates17<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19>
struct Templates19 {
  typedef TemplateSel<T1> Head;
  typedef Templates18<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20>
struct Templates20 {
  typedef TemplateSel<T1> Head;
  typedef Templates19<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21>
struct Templates21 {
  typedef TemplateSel<T1> Head;
  typedef Templates20<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22>
struct Templates22 {
  typedef TemplateSel<T1> Head;
  typedef Templates21<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23>
struct Templates23 {
  typedef TemplateSel<T1> Head;
  typedef Templates22<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24>
struct Templates24 {
  typedef TemplateSel<T1> Head;
  typedef Templates23<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25>
struct Templates25 {
  typedef TemplateSel<T1> Head;
  typedef Templates24<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26>
struct Templates26 {
  typedef TemplateSel<T1> Head;
  typedef Templates25<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27>
struct Templates27 {
  typedef TemplateSel<T1> Head;
  typedef Templates26<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28>
struct Templates28 {
  typedef TemplateSel<T1> Head;
  typedef Templates27<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29>
struct Templates29 {
  typedef TemplateSel<T1> Head;
  typedef Templates28<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30>
struct Templates30 {
  typedef TemplateSel<T1> Head;
  typedef Templates29<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31>
struct Templates31 {
  typedef TemplateSel<T1> Head;
  typedef Templates30<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32>
struct Templates32 {
  typedef TemplateSel<T1> Head;
  typedef Templates31<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33>
struct Templates33 {
  typedef TemplateSel<T1> Head;
  typedef Templates32<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34>
struct Templates34 {
  typedef TemplateSel<T1> Head;
  typedef Templates33<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35>
struct Templates35 {
  typedef TemplateSel<T1> Head;
  typedef Templates34<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36>
struct Templates36 {
  typedef TemplateSel<T1> Head;
  typedef Templates35<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37>
struct Templates37 {
  typedef TemplateSel<T1> Head;
  typedef Templates36<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38>
struct Templates38 {
  typedef TemplateSel<T1> Head;
  typedef Templates37<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39>
struct Templates39 {
  typedef TemplateSel<T1> Head;
  typedef Templates38<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40>
struct Templates40 {
  typedef TemplateSel<T1> Head;
  typedef Templates39<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41>
struct Templates41 {
  typedef TemplateSel<T1> Head;
  typedef Templates40<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42>
struct Templates42 {
  typedef TemplateSel<T1> Head;
  typedef Templates41<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43>
struct Templates43 {
  typedef TemplateSel<T1> Head;
  typedef Templates42<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44>
struct Templates44 {
  typedef TemplateSel<T1> Head;
  typedef Templates43<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45>
struct Templates45 {
  typedef TemplateSel<T1> Head;
  typedef Templates44<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44, T45> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46>
struct Templates46 {
  typedef TemplateSel<T1> Head;
  typedef Templates45<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44, T45, T46> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47>
struct Templates47 {
  typedef TemplateSel<T1> Head;
  typedef Templates46<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44, T45, T46, T47> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48>
struct Templates48 {
  typedef TemplateSel<T1> Head;
  typedef Templates47<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44, T45, T46, T47, T48> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
    GTEST_TEMPLATE_ T49>
struct Templates49 {
  typedef TemplateSel<T1> Head;
  typedef Templates48<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44, T45, T46, T47, T48, T49> Tail;
};

template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
    GTEST_TEMPLATE_ T49, GTEST_TEMPLATE_ T50>
struct Templates50 {
  typedef TemplateSel<T1> Head;
  typedef Templates49<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
      T43, T44, T45, T46, T47, T48, T49, T50> Tail;
};


// We don't want to require the users to write TemplatesN<...> directly,
// as that would require them to count the length.  Templates<...> is much
// easier to write, but generates horrible messages when there is a
// compiler error, as gcc insists on printing out each template
// argument, even if it has the default value (this means Templates<list>
// will appear as Templates<list, NoneT, NoneT, ..., NoneT> in the compiler
// errors).
//
// Our solution is to combine the best part of the two approaches: a
// user would write Templates<T1, ..., TN>, and Google Test will translate
// that to TemplatesN<T1, ..., TN> internally to make error messages
// readable.  The translation is done by the 'type' member of the
// Templates template.
template <GTEST_TEMPLATE_ T1 = NoneT, GTEST_TEMPLATE_ T2 = NoneT,
    GTEST_TEMPLATE_ T3 = NoneT, GTEST_TEMPLATE_ T4 = NoneT,
    GTEST_TEMPLATE_ T5 = NoneT, GTEST_TEMPLATE_ T6 = NoneT,
    GTEST_TEMPLATE_ T7 = NoneT, GTEST_TEMPLATE_ T8 = NoneT,
    GTEST_TEMPLATE_ T9 = NoneT, GTEST_TEMPLATE_ T10 = NoneT,
    GTEST_TEMPLATE_ T11 = NoneT, GTEST_TEMPLATE_ T12 = NoneT,
    GTEST_TEMPLATE_ T13 = NoneT, GTEST_TEMPLATE_ T14 = NoneT,
    GTEST_TEMPLATE_ T15 = NoneT, GTEST_TEMPLATE_ T16 = NoneT,
    GTEST_TEMPLATE_ T17 = NoneT, GTEST_TEMPLATE_ T18 = NoneT,
    GTEST_TEMPLATE_ T19 = NoneT, GTEST_TEMPLATE_ T20 = NoneT,
    GTEST_TEMPLATE_ T21 = NoneT, GTEST_TEMPLATE_ T22 = NoneT,
    GTEST_TEMPLATE_ T23 = NoneT, GTEST_TEMPLATE_ T24 = NoneT,
    GTEST_TEMPLATE_ T25 = NoneT, GTEST_TEMPLATE_ T26 = NoneT,
    GTEST_TEMPLATE_ T27 = NoneT, GTEST_TEMPLATE_ T28 = NoneT,
    GTEST_TEMPLATE_ T29 = NoneT, GTEST_TEMPLATE_ T30 = NoneT,
    GTEST_TEMPLATE_ T31 = NoneT, GTEST_TEMPLATE_ T32 = NoneT,
    GTEST_TEMPLATE_ T33 = NoneT, GTEST_TEMPLATE_ T34 = NoneT,
    GTEST_TEMPLATE_ T35 = NoneT, GTEST_TEMPLATE_ T36 = NoneT,
    GTEST_TEMPLATE_ T37 = NoneT, GTEST_TEMPLATE_ T38 = NoneT,
    GTEST_TEMPLATE_ T39 = NoneT, GTEST_TEMPLATE_ T40 = NoneT,
    GTEST_TEMPLATE_ T41 = NoneT, GTEST_TEMPLATE_ T42 = NoneT,
    GTEST_TEMPLATE_ T43 = NoneT, GTEST_TEMPLATE_ T44 = NoneT,
    GTEST_TEMPLATE_ T45 = NoneT, GTEST_TEMPLATE_ T46 = NoneT,
    GTEST_TEMPLATE_ T47 = NoneT, GTEST_TEMPLATE_ T48 = NoneT,
    GTEST_TEMPLATE_ T49 = NoneT, GTEST_TEMPLATE_ T50 = NoneT>
struct Templates {
  typedef Templates50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44, T45, T46, T47, T48, T49, T50> type;
};

template <>
struct Templates<NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT> {
  typedef Templates0 type;
};
template <GTEST_TEMPLATE_ T1>
struct Templates<T1, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT> {
  typedef Templates1<T1> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2>
struct Templates<T1, T2, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT> {
  typedef Templates2<T1, T2> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3>
struct Templates<T1, T2, T3, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates3<T1, T2, T3> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4>
struct Templates<T1, T2, T3, T4, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates4<T1, T2, T3, T4> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5>
struct Templates<T1, T2, T3, T4, T5, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates5<T1, T2, T3, T4, T5> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6>
struct Templates<T1, T2, T3, T4, T5, T6, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates6<T1, T2, T3, T4, T5, T6> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7>
struct Templates<T1, T2, T3, T4, T5, T6, T7, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates7<T1, T2, T3, T4, T5, T6, T7> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates8<T1, T2, T3, T4, T5, T6, T7, T8> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates9<T1, T2, T3, T4, T5, T6, T7, T8, T9> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT> {
  typedef Templates18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT> {
  typedef Templates19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT> {
  typedef Templates20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT> {
  typedef Templates21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT> {
  typedef Templates22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT> {
  typedef Templates23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT> {
  typedef Templates24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT> {
  typedef Templates25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT> {
  typedef Templates26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT> {
  typedef Templates27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT> {
  typedef Templates28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT> {
  typedef Templates29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, NoneT, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, NoneT, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, NoneT, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, NoneT, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, NoneT,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    T45, NoneT, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44, T45> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    T45, T46, NoneT, NoneT, NoneT, NoneT> {
  typedef Templates46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44, T45, T46> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    T45, T46, T47, NoneT, NoneT, NoneT> {
  typedef Templates47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44, T45, T46, T47> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    T45, T46, T47, T48, NoneT, NoneT> {
  typedef Templates48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44, T45, T46, T47, T48> type;
};
template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
    GTEST_TEMPLATE_ T49>
struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
    T45, T46, T47, T48, T49, NoneT> {
  typedef Templates49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
      T42, T43, T44, T45, T46, T47, T48, T49> type;
};

// The TypeList template makes it possible to use either a single type
// or a Types<...> list in TYPED_TEST_SUITE() and
// INSTANTIATE_TYPED_TEST_SUITE_P().

template <typename T>
struct TypeList {
  typedef Types1<T> type;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8, typename T9, typename T10,
    typename T11, typename T12, typename T13, typename T14, typename T15,
    typename T16, typename T17, typename T18, typename T19, typename T20,
    typename T21, typename T22, typename T23, typename T24, typename T25,
    typename T26, typename T27, typename T28, typename T29, typename T30,
    typename T31, typename T32, typename T33, typename T34, typename T35,
    typename T36, typename T37, typename T38, typename T39, typename T40,
    typename T41, typename T42, typename T43, typename T44, typename T45,
    typename T46, typename T47, typename T48, typename T49, typename T50>
struct TypeList<Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
    T44, T45, T46, T47, T48, T49, T50> > {
  typedef typename Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
      T41, T42, T43, T44, T45, T46, T47, T48, T49, T50>::type type;
};

#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

}  // namespace internal
}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_

// Due to C++ preprocessor weirdness, we need double indirection to
// concatenate two tokens when one of them is __LINE__.  Writing
//
//   foo ## __LINE__
//
// will result in the token foo__LINE__, instead of foo followed by
// the current line number.  For more details, see
// http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6
#define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
#define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar

// Stringifies its argument.
#define GTEST_STRINGIFY_(name) #name

namespace proto2 { class Message; }

namespace testing {

// Forward declarations.

class AssertionResult;                 // Result of an assertion.
class Message;                         // Represents a failure message.
class Test;                            // Represents a test.
class TestInfo;                        // Information about a test.
class TestPartResult;                  // Result of a test part.
class UnitTest;                        // A collection of test suites.

template <typename T>
::std::string PrintToString(const T& value);

namespace internal {

struct TraceInfo;                      // Information about a trace point.
class TestInfoImpl;                    // Opaque implementation of TestInfo
class UnitTestImpl;                    // Opaque implementation of UnitTest

// The text used in failure messages to indicate the start of the
// stack trace.
GTEST_API_ extern const char kStackTraceMarker[];

// An IgnoredValue object can be implicitly constructed from ANY value.
class IgnoredValue {
  struct Sink {};
 public:
  // This constructor template allows any value to be implicitly
  // converted to IgnoredValue.  The object has no data member and
  // doesn't try to remember anything about the argument.  We
  // deliberately omit the 'explicit' keyword in order to allow the
  // conversion to be implicit.
  // Disable the conversion if T already has a magical conversion operator.
  // Otherwise we get ambiguity.
  template <typename T,
            typename std::enable_if<!std::is_convertible<T, Sink>::value,
                                    int>::type = 0>
  IgnoredValue(const T& /* ignored */) {}  // NOLINT(runtime/explicit)
};

// Appends the user-supplied message to the Google-Test-generated message.
GTEST_API_ std::string AppendUserMessage(
    const std::string& gtest_msg, const Message& user_msg);

#if GTEST_HAS_EXCEPTIONS

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4275 \
/* an exported class was derived from a class that was not exported */)

// This exception is thrown by (and only by) a failed Google Test
// assertion when GTEST_FLAG(throw_on_failure) is true (if exceptions
// are enabled).  We derive it from std::runtime_error, which is for
// errors presumably detectable only at run time.  Since
// std::runtime_error inherits from std::exception, many testing
// frameworks know how to extract and print the message inside it.
class GTEST_API_ GoogleTestFailureException : public ::std::runtime_error {
 public:
  explicit GoogleTestFailureException(const TestPartResult& failure);
};

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4275

#endif  // GTEST_HAS_EXCEPTIONS

namespace edit_distance {
// Returns the optimal edits to go from 'left' to 'right'.
// All edits cost the same, with replace having lower priority than
// add/remove.
// Simple implementation of the Wagner-Fischer algorithm.
// See http://en.wikipedia.org/wiki/Wagner-Fischer_algorithm
enum EditType { kMatch, kAdd, kRemove, kReplace };
GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
    const std::vector<size_t>& left, const std::vector<size_t>& right);

// Same as above, but the input is represented as strings.
GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
    const std::vector<std::string>& left,
    const std::vector<std::string>& right);

// Create a diff of the input strings in Unified diff format.
GTEST_API_ std::string CreateUnifiedDiff(const std::vector<std::string>& left,
                                         const std::vector<std::string>& right,
                                         size_t context = 2);

}  // namespace edit_distance

// Calculate the diff between 'left' and 'right' and return it in unified diff
// format.
// If not null, stores in 'total_line_count' the total number of lines found
// in left + right.
GTEST_API_ std::string DiffStrings(const std::string& left,
                                   const std::string& right,
                                   size_t* total_line_count);

// Constructs and returns the message for an equality assertion
// (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure.
//
// The first four parameters are the expressions used in the assertion
// and their values, as strings.  For example, for ASSERT_EQ(foo, bar)
// where foo is 5 and bar is 6, we have:
//
//   expected_expression: "foo"
//   actual_expression:   "bar"
//   expected_value:      "5"
//   actual_value:        "6"
//
// The ignoring_case parameter is true iff the assertion is a
// *_STRCASEEQ*.  When it's true, the string " (ignoring case)" will
// be inserted into the message.
GTEST_API_ AssertionResult EqFailure(const char* expected_expression,
                                     const char* actual_expression,
                                     const std::string& expected_value,
                                     const std::string& actual_value,
                                     bool ignoring_case);

// Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
GTEST_API_ std::string GetBoolAssertionFailureMessage(
    const AssertionResult& assertion_result,
    const char* expression_text,
    const char* actual_predicate_value,
    const char* expected_predicate_value);

// This template class represents an IEEE floating-point number
// (either single-precision or double-precision, depending on the
// template parameters).
//
// The purpose of this class is to do more sophisticated number
// comparison.  (Due to round-off error, etc, it's very unlikely that
// two floating-points will be equal exactly.  Hence a naive
// comparison by the == operation often doesn't work.)
//
// Format of IEEE floating-point:
//
//   The most-significant bit being the leftmost, an IEEE
//   floating-point looks like
//
//     sign_bit exponent_bits fraction_bits
//
//   Here, sign_bit is a single bit that designates the sign of the
//   number.
//
//   For float, there are 8 exponent bits and 23 fraction bits.
//
//   For double, there are 11 exponent bits and 52 fraction bits.
//
//   More details can be found at
//   http://en.wikipedia.org/wiki/IEEE_floating-point_standard.
//
// Template parameter:
//
//   RawType: the raw floating-point type (either float or double)
template <typename RawType>
class FloatingPoint {
 public:
  // Defines the unsigned integer type that has the same size as the
  // floating point number.
  typedef typename TypeWithSize<sizeof(RawType)>::UInt Bits;

  // Constants.

  // # of bits in a number.
  static const size_t kBitCount = 8*sizeof(RawType);

  // # of fraction bits in a number.
  static const size_t kFractionBitCount =
    std::numeric_limits<RawType>::digits - 1;

  // # of exponent bits in a number.
  static const size_t kExponentBitCount = kBitCount - 1 - kFractionBitCount;

  // The mask for the sign bit.
  static const Bits kSignBitMask = static_cast<Bits>(1) << (kBitCount - 1);

  // The mask for the fraction bits.
  static const Bits kFractionBitMask =
    ~static_cast<Bits>(0) >> (kExponentBitCount + 1);

  // The mask for the exponent bits.
  static const Bits kExponentBitMask = ~(kSignBitMask | kFractionBitMask);

  // How many ULP's (Units in the Last Place) we want to tolerate when
  // comparing two numbers.  The larger the value, the more error we
  // allow.  A 0 value means that two numbers must be exactly the same
  // to be considered equal.
  //
  // The maximum error of a single floating-point operation is 0.5
  // units in the last place.  On Intel CPU's, all floating-point
  // calculations are done with 80-bit precision, while double has 64
  // bits.  Therefore, 4 should be enough for ordinary use.
  //
  // See the following article for more details on ULP:
  // http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
  static const size_t kMaxUlps = 4;

  // Constructs a FloatingPoint from a raw floating-point number.
  //
  // On an Intel CPU, passing a non-normalized NAN (Not a Number)
  // around may change its bits, although the new value is guaranteed
  // to be also a NAN.  Therefore, don't expect this constructor to
  // preserve the bits in x when x is a NAN.
  explicit FloatingPoint(const RawType& x) { u_.value_ = x; }

  // Static methods

  // Reinterprets a bit pattern as a floating-point number.
  //
  // This function is needed to test the AlmostEquals() method.
  static RawType ReinterpretBits(const Bits bits) {
    FloatingPoint fp(0);
    fp.u_.bits_ = bits;
    return fp.u_.value_;
  }

  // Returns the floating-point number that represent positive infinity.
  static RawType Infinity() {
    return ReinterpretBits(kExponentBitMask);
  }

  // Returns the maximum representable finite floating-point number.
  static RawType Max();

  // Non-static methods

  // Returns the bits that represents this number.
  const Bits &bits() const { return u_.bits_; }

  // Returns the exponent bits of this number.
  Bits exponent_bits() const { return kExponentBitMask & u_.bits_; }

  // Returns the fraction bits of this number.
  Bits fraction_bits() const { return kFractionBitMask & u_.bits_; }

  // Returns the sign bit of this number.
  Bits sign_bit() const { return kSignBitMask & u_.bits_; }

  // Returns true iff this is NAN (not a number).
  bool is_nan() const {
    // It's a NAN if the exponent bits are all ones and the fraction
    // bits are not entirely zeros.
    return (exponent_bits() == kExponentBitMask) && (fraction_bits() != 0);
  }

  // Returns true iff this number is at most kMaxUlps ULP's away from
  // rhs.  In particular, this function:
  //
  //   - returns false if either number is (or both are) NAN.
  //   - treats really large numbers as almost equal to infinity.
  //   - thinks +0.0 and -0.0 are 0 DLP's apart.
  bool AlmostEquals(const FloatingPoint& rhs) const {
    // The IEEE standard says that any comparison operation involving
    // a NAN must return false.
    if (is_nan() || rhs.is_nan()) return false;

    return DistanceBetweenSignAndMagnitudeNumbers(u_.bits_, rhs.u_.bits_)
        <= kMaxUlps;
  }

 private:
  // The data type used to store the actual floating-point number.
  union FloatingPointUnion {
    RawType value_;  // The raw floating-point number.
    Bits bits_;      // The bits that represent the number.
  };

  // Converts an integer from the sign-and-magnitude representation to
  // the biased representation.  More precisely, let N be 2 to the
  // power of (kBitCount - 1), an integer x is represented by the
  // unsigned number x + N.
  //
  // For instance,
  //
  //   -N + 1 (the most negative number representable using
  //          sign-and-magnitude) is represented by 1;
  //   0      is represented by N; and
  //   N - 1  (the biggest number representable using
  //          sign-and-magnitude) is represented by 2N - 1.
  //
  // Read http://en.wikipedia.org/wiki/Signed_number_representations
  // for more details on signed number representations.
  static Bits SignAndMagnitudeToBiased(const Bits &sam) {
    if (kSignBitMask & sam) {
      // sam represents a negative number.
      return ~sam + 1;
    } else {
      // sam represents a positive number.
      return kSignBitMask | sam;
    }
  }

  // Given two numbers in the sign-and-magnitude representation,
  // returns the distance between them as an unsigned number.
  static Bits DistanceBetweenSignAndMagnitudeNumbers(const Bits &sam1,
                                                     const Bits &sam2) {
    const Bits biased1 = SignAndMagnitudeToBiased(sam1);
    const Bits biased2 = SignAndMagnitudeToBiased(sam2);
    return (biased1 >= biased2) ? (biased1 - biased2) : (biased2 - biased1);
  }

  FloatingPointUnion u_;
};

// We cannot use std::numeric_limits<T>::max() as it clashes with the max()
// macro defined by <windows.h>.
template <>
inline float FloatingPoint<float>::Max() { return FLT_MAX; }
template <>
inline double FloatingPoint<double>::Max() { return DBL_MAX; }

// Typedefs the instances of the FloatingPoint template class that we
// care to use.
typedef FloatingPoint<float> Float;
typedef FloatingPoint<double> Double;

// In order to catch the mistake of putting tests that use different
// test fixture classes in the same test suite, we need to assign
// unique IDs to fixture classes and compare them.  The TypeId type is
// used to hold such IDs.  The user should treat TypeId as an opaque
// type: the only operation allowed on TypeId values is to compare
// them for equality using the == operator.
typedef const void* TypeId;

template <typename T>
class TypeIdHelper {
 public:
  // dummy_ must not have a const type.  Otherwise an overly eager
  // compiler (e.g. MSVC 7.1 & 8.0) may try to merge
  // TypeIdHelper<T>::dummy_ for different Ts as an "optimization".
  static bool dummy_;
};

template <typename T>
bool TypeIdHelper<T>::dummy_ = false;

// GetTypeId<T>() returns the ID of type T.  Different values will be
// returned for different types.  Calling the function twice with the
// same type argument is guaranteed to return the same ID.
template <typename T>
TypeId GetTypeId() {
  // The compiler is required to allocate a different
  // TypeIdHelper<T>::dummy_ variable for each T used to instantiate
  // the template.  Therefore, the address of dummy_ is guaranteed to
  // be unique.
  return &(TypeIdHelper<T>::dummy_);
}

// Returns the type ID of ::testing::Test.  Always call this instead
// of GetTypeId< ::testing::Test>() to get the type ID of
// ::testing::Test, as the latter may give the wrong result due to a
// suspected linker bug when compiling Google Test as a Mac OS X
// framework.
GTEST_API_ TypeId GetTestTypeId();

// Defines the abstract factory interface that creates instances
// of a Test object.
class TestFactoryBase {
 public:
  virtual ~TestFactoryBase() {}

  // Creates a test instance to run. The instance is both created and destroyed
  // within TestInfoImpl::Run()
  virtual Test* CreateTest() = 0;

 protected:
  TestFactoryBase() {}

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestFactoryBase);
};

// This class provides implementation of TeastFactoryBase interface.
// It is used in TEST and TEST_F macros.
template <class TestClass>
class TestFactoryImpl : public TestFactoryBase {
 public:
  Test* CreateTest() override { return new TestClass; }
};

#if GTEST_OS_WINDOWS

// Predicate-formatters for implementing the HRESULT checking macros
// {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}
// We pass a long instead of HRESULT to avoid causing an
// include dependency for the HRESULT type.
GTEST_API_ AssertionResult IsHRESULTSuccess(const char* expr,
                                            long hr);  // NOLINT
GTEST_API_ AssertionResult IsHRESULTFailure(const char* expr,
                                            long hr);  // NOLINT

#endif  // GTEST_OS_WINDOWS

// Types of SetUpTestSuite() and TearDownTestSuite() functions.
using SetUpTestSuiteFunc = void (*)();
using TearDownTestSuiteFunc = void (*)();

struct CodeLocation {
  CodeLocation(const std::string& a_file, int a_line)
      : file(a_file), line(a_line) {}

  std::string file;
  int line;
};

//  Helper to identify which setup function for TestCase / TestSuite to call.
//  Only one function is allowed, either TestCase or TestSute but not both.

// Utility functions to help SuiteApiResolver
using SetUpTearDownSuiteFuncType = void (*)();

inline SetUpTearDownSuiteFuncType GetNotDefaultOrNull(
    SetUpTearDownSuiteFuncType a, SetUpTearDownSuiteFuncType def) {
  return a == def ? nullptr : a;
}

template <typename T>
//  Note that SuiteApiResolver inherits from T because
//  SetUpTestSuite()/TearDownTestSuite() could be protected. Ths way
//  SuiteApiResolver can access them.
struct SuiteApiResolver : T {
  // testing::Test is only forward declared at this point. So we make it a
  // dependend class for the compiler to be OK with it.
  using Test =
      typename std::conditional<sizeof(T) != 0, ::testing::Test, void>::type;

  static SetUpTearDownSuiteFuncType GetSetUpCaseOrSuite() {
    SetUpTearDownSuiteFuncType test_case_fp =
        GetNotDefaultOrNull(&T::SetUpTestCase, &Test::SetUpTestCase);
    SetUpTearDownSuiteFuncType test_suite_fp =
        GetNotDefaultOrNull(&T::SetUpTestSuite, &Test::SetUpTestSuite);

    GTEST_CHECK_(!test_case_fp || !test_suite_fp)
        << "Test can not provide both SetUpTestSuite and SetUpTestCase, please "
           "make sure there is only one present ";

    return test_case_fp != nullptr ? test_case_fp : test_suite_fp;
  }

  static SetUpTearDownSuiteFuncType GetTearDownCaseOrSuite() {
    SetUpTearDownSuiteFuncType test_case_fp =
        GetNotDefaultOrNull(&T::TearDownTestCase, &Test::TearDownTestCase);
    SetUpTearDownSuiteFuncType test_suite_fp =
        GetNotDefaultOrNull(&T::TearDownTestSuite, &Test::TearDownTestSuite);

    GTEST_CHECK_(!test_case_fp || !test_suite_fp)
        << "Test can not provide both TearDownTestSuite and TearDownTestCase,"
           " please make sure there is only one present ";

    return test_case_fp != nullptr ? test_case_fp : test_suite_fp;
  }
};

// Creates a new TestInfo object and registers it with Google Test;
// returns the created object.
//
// Arguments:
//
//   test_suite_name:   name of the test suite
//   name:             name of the test
//   type_param        the name of the test's type parameter, or NULL if
//                     this is not a typed or a type-parameterized test.
//   value_param       text representation of the test's value parameter,
//                     or NULL if this is not a type-parameterized test.
//   code_location:    code location where the test is defined
//   fixture_class_id: ID of the test fixture class
//   set_up_tc:        pointer to the function that sets up the test suite
//   tear_down_tc:     pointer to the function that tears down the test suite
//   factory:          pointer to the factory that creates a test object.
//                     The newly created TestInfo instance will assume
//                     ownership of the factory object.
GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
    const char* test_suite_name, const char* name, const char* type_param,
    const char* value_param, CodeLocation code_location,
    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory);

// If *pstr starts with the given prefix, modifies *pstr to be right
// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false.  None of pstr, *pstr, and prefix can be NULL.
GTEST_API_ bool SkipPrefix(const char* prefix, const char** pstr);

#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

// State of the definition of a type-parameterized test suite.
class GTEST_API_ TypedTestSuitePState {
 public:
  TypedTestSuitePState() : registered_(false) {}

  // Adds the given test name to defined_test_names_ and return true
  // if the test suite hasn't been registered; otherwise aborts the
  // program.
  bool AddTestName(const char* file, int line, const char* case_name,
                   const char* test_name) {
    if (registered_) {
      fprintf(stderr,
              "%s Test %s must be defined before "
              "REGISTER_TYPED_TEST_SUITE_P(%s, ...).\n",
              FormatFileLocation(file, line).c_str(), test_name, case_name);
      fflush(stderr);
      posix::Abort();
    }
    registered_tests_.insert(
        ::std::make_pair(test_name, CodeLocation(file, line)));
    return true;
  }

  bool TestExists(const std::string& test_name) const {
    return registered_tests_.count(test_name) > 0;
  }

  const CodeLocation& GetCodeLocation(const std::string& test_name) const {
    RegisteredTestsMap::const_iterator it = registered_tests_.find(test_name);
    GTEST_CHECK_(it != registered_tests_.end());
    return it->second;
  }

  // Verifies that registered_tests match the test names in
  // defined_test_names_; returns registered_tests if successful, or
  // aborts the program otherwise.
  const char* VerifyRegisteredTestNames(
      const char* file, int line, const char* registered_tests);

 private:
  typedef ::std::map<std::string, CodeLocation> RegisteredTestsMap;

  bool registered_;
  RegisteredTestsMap registered_tests_;
};

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
using TypedTestCasePState = TypedTestSuitePState;
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

// Skips to the first non-space char after the first comma in 'str';
// returns NULL if no comma is found in 'str'.
inline const char* SkipComma(const char* str) {
  const char* comma = strchr(str, ',');
  if (comma == nullptr) {
    return nullptr;
  }
  while (IsSpace(*(++comma))) {}
  return comma;
}

// Returns the prefix of 'str' before the first comma in it; returns
// the entire string if it contains no comma.
inline std::string GetPrefixUntilComma(const char* str) {
  const char* comma = strchr(str, ',');
  return comma == nullptr ? str : std::string(str, comma);
}

// Splits a given string on a given delimiter, populating a given
// vector with the fields.
void SplitString(const ::std::string& str, char delimiter,
                 ::std::vector< ::std::string>* dest);

// The default argument to the template below for the case when the user does
// not provide a name generator.
struct DefaultNameGenerator {
  template <typename T>
  static std::string GetName(int i) {
    return StreamableToString(i);
  }
};

template <typename Provided = DefaultNameGenerator>
struct NameGeneratorSelector {
  typedef Provided type;
};

template <typename NameGenerator>
void GenerateNamesRecursively(Types0, std::vector<std::string>*, int) {}

template <typename NameGenerator, typename Types>
void GenerateNamesRecursively(Types, std::vector<std::string>* result, int i) {
  result->push_back(NameGenerator::template GetName<typename Types::Head>(i));
  GenerateNamesRecursively<NameGenerator>(typename Types::Tail(), result,
                                          i + 1);
}

template <typename NameGenerator, typename Types>
std::vector<std::string> GenerateNames() {
  std::vector<std::string> result;
  GenerateNamesRecursively<NameGenerator>(Types(), &result, 0);
  return result;
}

// TypeParameterizedTest<Fixture, TestSel, Types>::Register()
// registers a list of type-parameterized tests with Google Test.  The
// return value is insignificant - we just need to return something
// such that we can call this function in a namespace scope.
//
// Implementation note: The GTEST_TEMPLATE_ macro declares a template
// template parameter.  It's defined in gtest-type-util.h.
template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
class TypeParameterizedTest {
 public:
  // 'index' is the index of the test in the type list 'Types'
  // specified in INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, TestSuite,
  // Types).  Valid values for 'index' are [0, N - 1] where N is the
  // length of Types.
  static bool Register(const char* prefix, const CodeLocation& code_location,
                       const char* case_name, const char* test_names, int index,
                       const std::vector<std::string>& type_names =
                           GenerateNames<DefaultNameGenerator, Types>()) {
    typedef typename Types::Head Type;
    typedef Fixture<Type> FixtureClass;
    typedef typename GTEST_BIND_(TestSel, Type) TestClass;

    // First, registers the first type-parameterized test in the type
    // list.
    MakeAndRegisterTestInfo(
        (std::string(prefix) + (prefix[0] == '\0' ? "" : "/") + case_name +
         "/" + type_names[index])
            .c_str(),
        StripTrailingSpaces(GetPrefixUntilComma(test_names)).c_str(),
        GetTypeName<Type>().c_str(),
        nullptr,  // No value parameter.
        code_location, GetTypeId<FixtureClass>(),
        SuiteApiResolver<TestClass>::GetSetUpCaseOrSuite(),
        SuiteApiResolver<TestClass>::GetTearDownCaseOrSuite(),
        new TestFactoryImpl<TestClass>);

    // Next, recurses (at compile time) with the tail of the type list.
    return TypeParameterizedTest<Fixture, TestSel,
                                 typename Types::Tail>::Register(prefix,
                                                                 code_location,
                                                                 case_name,
                                                                 test_names,
                                                                 index + 1,
                                                                 type_names);
  }
};

// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, class TestSel>
class TypeParameterizedTest<Fixture, TestSel, Types0> {
 public:
  static bool Register(const char* /*prefix*/, const CodeLocation&,
                       const char* /*case_name*/, const char* /*test_names*/,
                       int /*index*/,
                       const std::vector<std::string>& =
                           std::vector<std::string>() /*type_names*/) {
    return true;
  }
};

// TypeParameterizedTestSuite<Fixture, Tests, Types>::Register()
// registers *all combinations* of 'Tests' and 'Types' with Google
// Test.  The return value is insignificant - we just need to return
// something such that we can call this function in a namespace scope.
template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
class TypeParameterizedTestSuite {
 public:
  static bool Register(const char* prefix, CodeLocation code_location,
                       const TypedTestSuitePState* state, const char* case_name,
                       const char* test_names,
                       const std::vector<std::string>& type_names =
                           GenerateNames<DefaultNameGenerator, Types>()) {
    std::string test_name = StripTrailingSpaces(
        GetPrefixUntilComma(test_names));
    if (!state->TestExists(test_name)) {
      fprintf(stderr, "Failed to get code location for test %s.%s at %s.",
              case_name, test_name.c_str(),
              FormatFileLocation(code_location.file.c_str(),
                                 code_location.line).c_str());
      fflush(stderr);
      posix::Abort();
    }
    const CodeLocation& test_location = state->GetCodeLocation(test_name);

    typedef typename Tests::Head Head;

    // First, register the first test in 'Test' for each type in 'Types'.
    TypeParameterizedTest<Fixture, Head, Types>::Register(
        prefix, test_location, case_name, test_names, 0, type_names);

    // Next, recurses (at compile time) with the tail of the test list.
    return TypeParameterizedTestSuite<Fixture, typename Tests::Tail,
                                      Types>::Register(prefix, code_location,
                                                       state, case_name,
                                                       SkipComma(test_names),
                                                       type_names);
  }
};

// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, typename Types>
class TypeParameterizedTestSuite<Fixture, Templates0, Types> {
 public:
  static bool Register(const char* /*prefix*/, const CodeLocation&,
                       const TypedTestSuitePState* /*state*/,
                       const char* /*case_name*/, const char* /*test_names*/,
                       const std::vector<std::string>& =
                           std::vector<std::string>() /*type_names*/) {
    return true;
  }
};

#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

// Returns the current OS stack trace as an std::string.
//
// The maximum number of stack frames to be included is specified by
// the gtest_stack_trace_depth flag.  The skip_count parameter
// specifies the number of top frames to be skipped, which doesn't
// count against the number of frames to be included.
//
// For example, if Foo() calls Bar(), which in turn calls
// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
GTEST_API_ std::string GetCurrentOsStackTraceExceptTop(
    UnitTest* unit_test, int skip_count);

// Helpers for suppressing warnings on unreachable code or constant
// condition.

// Always returns true.
GTEST_API_ bool AlwaysTrue();

// Always returns false.
inline bool AlwaysFalse() { return !AlwaysTrue(); }

// Helper for suppressing false warning from Clang on a const char*
// variable declared in a conditional expression always being NULL in
// the else branch.
struct GTEST_API_ ConstCharPtr {
  ConstCharPtr(const char* str) : value(str) {}
  operator bool() const { return true; }
  const char* value;
};

// A simple Linear Congruential Generator for generating random
// numbers with a uniform distribution.  Unlike rand() and srand(), it
// doesn't use global state (and therefore can't interfere with user
// code).  Unlike rand_r(), it's portable.  An LCG isn't very random,
// but it's good enough for our purposes.
class GTEST_API_ Random {
 public:
  static const UInt32 kMaxRange = 1u << 31;

  explicit Random(UInt32 seed) : state_(seed) {}

  void Reseed(UInt32 seed) { state_ = seed; }

  // Generates a random number from [0, range).  Crashes if 'range' is
  // 0 or greater than kMaxRange.
  UInt32 Generate(UInt32 range);

 private:
  UInt32 state_;
  GTEST_DISALLOW_COPY_AND_ASSIGN_(Random);
};

// Defining a variable of type CompileAssertTypesEqual<T1, T2> will cause a
// compiler error iff T1 and T2 are different types.
template <typename T1, typename T2>
struct CompileAssertTypesEqual;

template <typename T>
struct CompileAssertTypesEqual<T, T> {
};

// Removes the reference from a type if it is a reference type,
// otherwise leaves it unchanged.  This is the same as
// tr1::remove_reference, which is not widely available yet.
template <typename T>
struct RemoveReference { typedef T type; };  // NOLINT
template <typename T>
struct RemoveReference<T&> { typedef T type; };  // NOLINT

// A handy wrapper around RemoveReference that works when the argument
// T depends on template parameters.
#define GTEST_REMOVE_REFERENCE_(T) \
    typename ::testing::internal::RemoveReference<T>::type

// Removes const from a type if it is a const type, otherwise leaves
// it unchanged.  This is the same as tr1::remove_const, which is not
// widely available yet.
template <typename T>
struct RemoveConst { typedef T type; };  // NOLINT
template <typename T>
struct RemoveConst<const T> { typedef T type; };  // NOLINT

// MSVC 8.0, Sun C++, and IBM XL C++ have a bug which causes the above
// definition to fail to remove the const in 'const int[3]' and 'const
// char[3][4]'.  The following specialization works around the bug.
template <typename T, size_t N>
struct RemoveConst<const T[N]> {
  typedef typename RemoveConst<T>::type type[N];
};

// A handy wrapper around RemoveConst that works when the argument
// T depends on template parameters.
#define GTEST_REMOVE_CONST_(T) \
    typename ::testing::internal::RemoveConst<T>::type

// Turns const U&, U&, const U, and U all into U.
#define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \
    GTEST_REMOVE_CONST_(GTEST_REMOVE_REFERENCE_(T))

// IsAProtocolMessage<T>::value is a compile-time bool constant that's
// true iff T is type proto2::Message or a subclass of it.
template <typename T>
struct IsAProtocolMessage
    : public bool_constant<
  std::is_convertible<const T*, const ::proto2::Message*>::value> {
};

// When the compiler sees expression IsContainerTest<C>(0), if C is an
// STL-style container class, the first overload of IsContainerTest
// will be viable (since both C::iterator* and C::const_iterator* are
// valid types and NULL can be implicitly converted to them).  It will
// be picked over the second overload as 'int' is a perfect match for
// the type of argument 0.  If C::iterator or C::const_iterator is not
// a valid type, the first overload is not viable, and the second
// overload will be picked.  Therefore, we can determine whether C is
// a container class by checking the type of IsContainerTest<C>(0).
// The value of the expression is insignificant.
//
// In C++11 mode we check the existence of a const_iterator and that an
// iterator is properly implemented for the container.
//
// For pre-C++11 that we look for both C::iterator and C::const_iterator.
// The reason is that C++ injects the name of a class as a member of the
// class itself (e.g. you can refer to class iterator as either
// 'iterator' or 'iterator::iterator').  If we look for C::iterator
// only, for example, we would mistakenly think that a class named
// iterator is an STL container.
//
// Also note that the simpler approach of overloading
// IsContainerTest(typename C::const_iterator*) and
// IsContainerTest(...) doesn't work with Visual Age C++ and Sun C++.
typedef int IsContainer;
template <class C,
          class Iterator = decltype(::std::declval<const C&>().begin()),
          class = decltype(::std::declval<const C&>().end()),
          class = decltype(++::std::declval<Iterator&>()),
          class = decltype(*::std::declval<Iterator>()),
          class = typename C::const_iterator>
IsContainer IsContainerTest(int /* dummy */) {
  return 0;
}

typedef char IsNotContainer;
template <class C>
IsNotContainer IsContainerTest(long /* dummy */) { return '\0'; }

// Trait to detect whether a type T is a hash table.
// The heuristic used is that the type contains an inner type `hasher` and does
// not contain an inner type `reverse_iterator`.
// If the container is iterable in reverse, then order might actually matter.
template <typename T>
struct IsHashTable {
 private:
  template <typename U>
  static char test(typename U::hasher*, typename U::reverse_iterator*);
  template <typename U>
  static int test(typename U::hasher*, ...);
  template <typename U>
  static char test(...);

 public:
  static const bool value = sizeof(test<T>(nullptr, nullptr)) == sizeof(int);
};

template <typename T>
const bool IsHashTable<T>::value;

template <typename C,
          bool = sizeof(IsContainerTest<C>(0)) == sizeof(IsContainer)>
struct IsRecursiveContainerImpl;

template <typename C>
struct IsRecursiveContainerImpl<C, false> : public false_type {};

// Since the IsRecursiveContainerImpl depends on the IsContainerTest we need to
// obey the same inconsistencies as the IsContainerTest, namely check if
// something is a container is relying on only const_iterator in C++11 and
// is relying on both const_iterator and iterator otherwise
template <typename C>
struct IsRecursiveContainerImpl<C, true> {
  using value_type = decltype(*std::declval<typename C::const_iterator>());
  using type =
      is_same<typename std::remove_const<
                  typename std::remove_reference<value_type>::type>::type,
              C>;
};

// IsRecursiveContainer<Type> is a unary compile-time predicate that
// evaluates whether C is a recursive container type. A recursive container
// type is a container type whose value_type is equal to the container type
// itself. An example for a recursive container type is
// boost::filesystem::path, whose iterator has a value_type that is equal to
// boost::filesystem::path.
template <typename C>
struct IsRecursiveContainer : public IsRecursiveContainerImpl<C>::type {};

// EnableIf<condition>::type is void when 'Cond' is true, and
// undefined when 'Cond' is false.  To use SFINAE to make a function
// overload only apply when a particular expression is true, add
// "typename EnableIf<expression>::type* = 0" as the last parameter.
template<bool> struct EnableIf;
template<> struct EnableIf<true> { typedef void type; };  // NOLINT

// Utilities for native arrays.

// ArrayEq() compares two k-dimensional native arrays using the
// elements' operator==, where k can be any integer >= 0.  When k is
// 0, ArrayEq() degenerates into comparing a single pair of values.

template <typename T, typename U>
bool ArrayEq(const T* lhs, size_t size, const U* rhs);

// This generic version is used when k is 0.
template <typename T, typename U>
inline bool ArrayEq(const T& lhs, const U& rhs) { return lhs == rhs; }

// This overload is used when k >= 1.
template <typename T, typename U, size_t N>
inline bool ArrayEq(const T(&lhs)[N], const U(&rhs)[N]) {
  return internal::ArrayEq(lhs, N, rhs);
}

// This helper reduces code bloat.  If we instead put its logic inside
// the previous ArrayEq() function, arrays with different sizes would
// lead to different copies of the template code.
template <typename T, typename U>
bool ArrayEq(const T* lhs, size_t size, const U* rhs) {
  for (size_t i = 0; i != size; i++) {
    if (!internal::ArrayEq(lhs[i], rhs[i]))
      return false;
  }
  return true;
}

// Finds the first element in the iterator range [begin, end) that
// equals elem.  Element may be a native array type itself.
template <typename Iter, typename Element>
Iter ArrayAwareFind(Iter begin, Iter end, const Element& elem) {
  for (Iter it = begin; it != end; ++it) {
    if (internal::ArrayEq(*it, elem))
      return it;
  }
  return end;
}

// CopyArray() copies a k-dimensional native array using the elements'
// operator=, where k can be any integer >= 0.  When k is 0,
// CopyArray() degenerates into copying a single value.

template <typename T, typename U>
void CopyArray(const T* from, size_t size, U* to);

// This generic version is used when k is 0.
template <typename T, typename U>
inline void CopyArray(const T& from, U* to) { *to = from; }

// This overload is used when k >= 1.
template <typename T, typename U, size_t N>
inline void CopyArray(const T(&from)[N], U(*to)[N]) {
  internal::CopyArray(from, N, *to);
}

// This helper reduces code bloat.  If we instead put its logic inside
// the previous CopyArray() function, arrays with different sizes
// would lead to different copies of the template code.
template <typename T, typename U>
void CopyArray(const T* from, size_t size, U* to) {
  for (size_t i = 0; i != size; i++) {
    internal::CopyArray(from[i], to + i);
  }
}

// The relation between an NativeArray object (see below) and the
// native array it represents.
// We use 2 different structs to allow non-copyable types to be used, as long
// as RelationToSourceReference() is passed.
struct RelationToSourceReference {};
struct RelationToSourceCopy {};

// Adapts a native array to a read-only STL-style container.  Instead
// of the complete STL container concept, this adaptor only implements
// members useful for Google Mock's container matchers.  New members
// should be added as needed.  To simplify the implementation, we only
// support Element being a raw type (i.e. having no top-level const or
// reference modifier).  It's the client's responsibility to satisfy
// this requirement.  Element can be an array type itself (hence
// multi-dimensional arrays are supported).
template <typename Element>
class NativeArray {
 public:
  // STL-style container typedefs.
  typedef Element value_type;
  typedef Element* iterator;
  typedef const Element* const_iterator;

  // Constructs from a native array. References the source.
  NativeArray(const Element* array, size_t count, RelationToSourceReference) {
    InitRef(array, count);
  }

  // Constructs from a native array. Copies the source.
  NativeArray(const Element* array, size_t count, RelationToSourceCopy) {
    InitCopy(array, count);
  }

  // Copy constructor.
  NativeArray(const NativeArray& rhs) {
    (this->*rhs.clone_)(rhs.array_, rhs.size_);
  }

  ~NativeArray() {
    if (clone_ != &NativeArray::InitRef)
      delete[] array_;
  }

  // STL-style container methods.
  size_t size() const { return size_; }
  const_iterator begin() const { return array_; }
  const_iterator end() const { return array_ + size_; }
  bool operator==(const NativeArray& rhs) const {
    return size() == rhs.size() &&
        ArrayEq(begin(), size(), rhs.begin());
  }

 private:
  enum {
    kCheckTypeIsNotConstOrAReference = StaticAssertTypeEqHelper<
        Element, GTEST_REMOVE_REFERENCE_AND_CONST_(Element)>::value
  };

  // Initializes this object with a copy of the input.
  void InitCopy(const Element* array, size_t a_size) {
    Element* const copy = new Element[a_size];
    CopyArray(array, a_size, copy);
    array_ = copy;
    size_ = a_size;
    clone_ = &NativeArray::InitCopy;
  }

  // Initializes this object with a reference of the input.
  void InitRef(const Element* array, size_t a_size) {
    array_ = array;
    size_ = a_size;
    clone_ = &NativeArray::InitRef;
  }

  const Element* array_;
  size_t size_;
  void (NativeArray::*clone_)(const Element*, size_t);

  GTEST_DISALLOW_ASSIGN_(NativeArray);
};

// Backport of std::index_sequence.
template <size_t... Is>
struct IndexSequence {
  using type = IndexSequence;
};

// Double the IndexSequence, and one if plus_one is true.
template <bool plus_one, typename T, size_t sizeofT>
struct DoubleSequence;
template <size_t... I, size_t sizeofT>
struct DoubleSequence<true, IndexSequence<I...>, sizeofT> {
  using type = IndexSequence<I..., (sizeofT + I)..., 2 * sizeofT>;
};
template <size_t... I, size_t sizeofT>
struct DoubleSequence<false, IndexSequence<I...>, sizeofT> {
  using type = IndexSequence<I..., (sizeofT + I)...>;
};

// Backport of std::make_index_sequence.
// It uses O(ln(N)) instantiation depth.
template <size_t N>
struct MakeIndexSequence
    : DoubleSequence<N % 2 == 1, typename MakeIndexSequence<N / 2>::type,
                     N / 2>::type {};

template <>
struct MakeIndexSequence<0> : IndexSequence<> {};

// FIXME: This implementation of ElemFromList is O(1) in instantiation depth,
// but it is O(N^2) in total instantiations. Not sure if this is the best
// tradeoff, as it will make it somewhat slow to compile.
template <typename T, size_t, size_t>
struct ElemFromListImpl {};

template <typename T, size_t I>
struct ElemFromListImpl<T, I, I> {
  using type = T;
};

// Get the Nth element from T...
// It uses O(1) instantiation depth.
template <size_t N, typename I, typename... T>
struct ElemFromList;

template <size_t N, size_t... I, typename... T>
struct ElemFromList<N, IndexSequence<I...>, T...>
    : ElemFromListImpl<T, N, I>... {};

template <typename... T>
class FlatTuple;

template <typename Derived, size_t I>
struct FlatTupleElemBase;

template <typename... T, size_t I>
struct FlatTupleElemBase<FlatTuple<T...>, I> {
  using value_type =
      typename ElemFromList<I, typename MakeIndexSequence<sizeof...(T)>::type,
                            T...>::type;
  FlatTupleElemBase() = default;
  explicit FlatTupleElemBase(value_type t) : value(std::move(t)) {}
  value_type value;
};

template <typename Derived, typename Idx>
struct FlatTupleBase;

template <size_t... Idx, typename... T>
struct FlatTupleBase<FlatTuple<T...>, IndexSequence<Idx...>>
    : FlatTupleElemBase<FlatTuple<T...>, Idx>... {
  using Indices = IndexSequence<Idx...>;
  FlatTupleBase() = default;
  explicit FlatTupleBase(T... t)
      : FlatTupleElemBase<FlatTuple<T...>, Idx>(std::move(t))... {}
};

// Analog to std::tuple but with different tradeoffs.
// This class minimizes the template instantiation depth, thus allowing more
// elements that std::tuple would. std::tuple has been seen to require an
// instantiation depth of more than 10x the number of elements in some
// implementations.
// FlatTuple and ElemFromList are not recursive and have a fixed depth
// regardless of T...
// MakeIndexSequence, on the other hand, it is recursive but with an
// instantiation depth of O(ln(N)).
template <typename... T>
class FlatTuple
    : private FlatTupleBase<FlatTuple<T...>,
                            typename MakeIndexSequence<sizeof...(T)>::type> {
  using Indices = typename FlatTuple::FlatTupleBase::Indices;

 public:
  FlatTuple() = default;
  explicit FlatTuple(T... t) : FlatTuple::FlatTupleBase(std::move(t)...) {}

  template <size_t I>
  const typename ElemFromList<I, Indices, T...>::type& Get() const {
    return static_cast<const FlatTupleElemBase<FlatTuple, I>*>(this)->value;
  }

  template <size_t I>
  typename ElemFromList<I, Indices, T...>::type& Get() {
    return static_cast<FlatTupleElemBase<FlatTuple, I>*>(this)->value;
  }
};

// Utility functions to be called with static_assert to induce deprecation
// warnings.
GTEST_INTERNAL_DEPRECATED(
    "INSTANTIATE_TEST_CASE_P is deprecated, please use "
    "INSTANTIATE_TEST_SUITE_P")
constexpr bool InstantiateTestCase_P_IsDeprecated() { return true; }

GTEST_INTERNAL_DEPRECATED(
    "TYPED_TEST_CASE_P is deprecated, please use "
    "TYPED_TEST_SUITE_P")
constexpr bool TypedTestCase_P_IsDeprecated() { return true; }

GTEST_INTERNAL_DEPRECATED(
    "TYPED_TEST_CASE is deprecated, please use "
    "TYPED_TEST_SUITE")
constexpr bool TypedTestCaseIsDeprecated() { return true; }

GTEST_INTERNAL_DEPRECATED(
    "REGISTER_TYPED_TEST_CASE_P is deprecated, please use "
    "REGISTER_TYPED_TEST_SUITE_P")
constexpr bool RegisterTypedTestCase_P_IsDeprecated() { return true; }

GTEST_INTERNAL_DEPRECATED(
    "INSTANTIATE_TYPED_TEST_CASE_P is deprecated, please use "
    "INSTANTIATE_TYPED_TEST_SUITE_P")
constexpr bool InstantiateTypedTestCase_P_IsDeprecated() { return true; }

}  // namespace internal
}  // namespace testing

#define GTEST_MESSAGE_AT_(file, line, message, result_type) \
  ::testing::internal::AssertHelper(result_type, file, line, message) \
    = ::testing::Message()

#define GTEST_MESSAGE_(message, result_type) \
  GTEST_MESSAGE_AT_(__FILE__, __LINE__, message, result_type)

#define GTEST_FATAL_FAILURE_(message) \
  return GTEST_MESSAGE_(message, ::testing::TestPartResult::kFatalFailure)

#define GTEST_NONFATAL_FAILURE_(message) \
  GTEST_MESSAGE_(message, ::testing::TestPartResult::kNonFatalFailure)

#define GTEST_SUCCESS_(message) \
  GTEST_MESSAGE_(message, ::testing::TestPartResult::kSuccess)

#define GTEST_SKIP_(message) \
  return GTEST_MESSAGE_(message, ::testing::TestPartResult::kSkip)

// Suppress MSVC warning 4072 (unreachable code) for the code following
// statement if it returns or throws (or doesn't return or throw in some
// situations).
#define GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement) \
  if (::testing::internal::AlwaysTrue()) { statement; }

#define GTEST_TEST_THROW_(statement, expected_exception, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (::testing::internal::ConstCharPtr gtest_msg = "") { \
    bool gtest_caught_expected = false; \
    try { \
      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
    } \
    catch (expected_exception const&) { \
      gtest_caught_expected = true; \
    } \
    catch (...) { \
      gtest_msg.value = \
          "Expected: " #statement " throws an exception of type " \
          #expected_exception ".\n  Actual: it throws a different type."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
    } \
    if (!gtest_caught_expected) { \
      gtest_msg.value = \
          "Expected: " #statement " throws an exception of type " \
          #expected_exception ".\n  Actual: it throws nothing."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
      fail(gtest_msg.value)

#define GTEST_TEST_NO_THROW_(statement, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (::testing::internal::AlwaysTrue()) { \
    try { \
      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
    } \
    catch (...) { \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \
      fail("Expected: " #statement " doesn't throw an exception.\n" \
           "  Actual: it throws.")

#define GTEST_TEST_ANY_THROW_(statement, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (::testing::internal::AlwaysTrue()) { \
    bool gtest_caught_any = false; \
    try { \
      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
    } \
    catch (...) { \
      gtest_caught_any = true; \
    } \
    if (!gtest_caught_any) { \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__): \
      fail("Expected: " #statement " throws an exception.\n" \
           "  Actual: it doesn't.")


// Implements Boolean test assertions such as EXPECT_TRUE. expression can be
// either a boolean expression or an AssertionResult. text is a textual
// represenation of expression as it was passed into the EXPECT_TRUE.
#define GTEST_TEST_BOOLEAN_(expression, text, actual, expected, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (const ::testing::AssertionResult gtest_ar_ = \
      ::testing::AssertionResult(expression)) \
    ; \
  else \
    fail(::testing::internal::GetBoolAssertionFailureMessage(\
        gtest_ar_, text, #actual, #expected).c_str())

#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (::testing::internal::AlwaysTrue()) { \
    ::testing::internal::HasNewFatalFailureHelper gtest_fatal_failure_checker; \
    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
    if (gtest_fatal_failure_checker.has_new_fatal_failure()) { \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__): \
      fail("Expected: " #statement " doesn't generate new fatal " \
           "failures in the current thread.\n" \
           "  Actual: it does.")

// Expands to the name of the class that implements the given test.
#define GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) \
  test_suite_name##_##test_name##_Test

// Helper macro for defining tests.
#define GTEST_TEST_(test_suite_name, test_name, parent_class, parent_id)      \
  class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                    \
      : public parent_class {                                                 \
   public:                                                                    \
    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                   \
                                                                              \
   private:                                                                   \
    virtual void TestBody();                                                  \
    static ::testing::TestInfo* const test_info_ GTEST_ATTRIBUTE_UNUSED_;     \
    GTEST_DISALLOW_COPY_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,   \
                                                           test_name));       \
  };                                                                          \
                                                                              \
  ::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_suite_name,          \
                                                    test_name)::test_info_ =  \
      ::testing::internal::MakeAndRegisterTestInfo(                           \
          #test_suite_name, #test_name, nullptr, nullptr,                     \
          ::testing::internal::CodeLocation(__FILE__, __LINE__), (parent_id), \
          ::testing::internal::SuiteApiResolver<                              \
              parent_class>::GetSetUpCaseOrSuite(),                           \
          ::testing::internal::SuiteApiResolver<                              \
              parent_class>::GetTearDownCaseOrSuite(),                        \
          new ::testing::internal::TestFactoryImpl<GTEST_TEST_CLASS_NAME_(    \
              test_suite_name, test_name)>);                                  \
  void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody()

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file defines the public API for death tests.  It is
// #included by gtest.h so a user doesn't need to include this
// directly.
// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
#define GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_

// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file defines internal utilities needed for implementing
// death tests.  They are subject to change without notice.
// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_

// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// The Google C++ Testing and Mocking Framework (Google Test)
//
// This file implements just enough of the matcher interface to allow
// EXPECT_DEATH and friends to accept a matcher argument.

// IWYU pragma: private, include "testing/base/public/gunit.h"
// IWYU pragma: friend third_party/googletest/googlemock/.*
// IWYU pragma: friend third_party/googletest/googletest/.*

#ifndef GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
#define GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_

#include <memory>
#include <ostream>
#include <string>

// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


// Google Test - The Google C++ Testing and Mocking Framework
//
// This file implements a universal value printer that can print a
// value of any type T:
//
//   void ::testing::internal::UniversalPrinter<T>::Print(value, ostream_ptr);
//
// A user can teach this function how to print a class type T by
// defining either operator<<() or PrintTo() in the namespace that
// defines T.  More specifically, the FIRST defined function in the
// following list will be used (assuming T is defined in namespace
// foo):
//
//   1. foo::PrintTo(const T&, ostream*)
//   2. operator<<(ostream&, const T&) defined in either foo or the
//      global namespace.
//
// However if T is an STL-style container then it is printed element-wise
// unless foo::PrintTo(const T&, ostream*) is defined. Note that
// operator<<() is ignored for container types.
//
// If none of the above is defined, it will print the debug string of
// the value if it is a protocol buffer, or print the raw bytes in the
// value otherwise.
//
// To aid debugging: when T is a reference type, the address of the
// value is also printed; when T is a (const) char pointer, both the
// pointer value and the NUL-terminated string it points to are
// printed.
//
// We also provide some convenient wrappers:
//
//   // Prints a value to a string.  For a (const or not) char
//   // pointer, the NUL-terminated string (but not the pointer) is
//   // printed.
//   std::string ::testing::PrintToString(const T& value);
//
//   // Prints a value tersely: for a reference type, the referenced
//   // value (but not the address) is printed; for a (const or not) char
//   // pointer, the NUL-terminated string (but not the pointer) is
//   // printed.
//   void ::testing::internal::UniversalTersePrint(const T& value, ostream*);
//
//   // Prints value using the type inferred by the compiler.  The difference
//   // from UniversalTersePrint() is that this function prints both the
//   // pointer and the NUL-terminated string for a (const or not) char pointer.
//   void ::testing::internal::UniversalPrint(const T& value, ostream*);
//
//   // Prints the fields of a tuple tersely to a string vector, one
//   // element for each field. Tuple support must be enabled in
//   // gtest-port.h.
//   std::vector<string> UniversalTersePrintTupleFieldsToStrings(
//       const Tuple& value);
//
// Known limitation:
//
// The print primitives print the elements of an STL-style container
// using the compiler-inferred type of *iter where iter is a
// const_iterator of the container.  When const_iterator is an input
// iterator but not a forward iterator, this inferred type may not
// match value_type, and the print output may be incorrect.  In
// practice, this is rarely a problem as for most containers
// const_iterator is a forward iterator.  We'll fix this if there's an
// actual need for it.  Note that this fix cannot rely on value_type
// being defined as many user-defined container types don't have
// value_type.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
#define GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_

#include <functional>
#include <ostream>  // NOLINT
#include <sstream>
#include <string>
#include <tuple>
#include <type_traits>
#include <utility>
#include <vector>

#if GTEST_HAS_ABSL
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "absl/types/variant.h"
#endif  // GTEST_HAS_ABSL

namespace testing {

// Definitions in the 'internal' and 'internal2' name spaces are
// subject to change without notice.  DO NOT USE THEM IN USER CODE!
namespace internal2 {

// Prints the given number of bytes in the given object to the given
// ostream.
GTEST_API_ void PrintBytesInObjectTo(const unsigned char* obj_bytes,
                                     size_t count,
                                     ::std::ostream* os);

// For selecting which printer to use when a given type has neither <<
// nor PrintTo().
enum TypeKind {
  kProtobuf,              // a protobuf type
  kConvertibleToInteger,  // a type implicitly convertible to BiggestInt
                          // (e.g. a named or unnamed enum type)
#if GTEST_HAS_ABSL
  kConvertibleToStringView,  // a type implicitly convertible to
                             // absl::string_view
#endif
  kOtherType  // anything else
};

// TypeWithoutFormatter<T, kTypeKind>::PrintValue(value, os) is called
// by the universal printer to print a value of type T when neither
// operator<< nor PrintTo() is defined for T, where kTypeKind is the
// "kind" of T as defined by enum TypeKind.
template <typename T, TypeKind kTypeKind>
class TypeWithoutFormatter {
 public:
  // This default version is called when kTypeKind is kOtherType.
  static void PrintValue(const T& value, ::std::ostream* os) {
    PrintBytesInObjectTo(static_cast<const unsigned char*>(
                             reinterpret_cast<const void*>(&value)),
                         sizeof(value), os);
  }
};

// We print a protobuf using its ShortDebugString() when the string
// doesn't exceed this many characters; otherwise we print it using
// DebugString() for better readability.
const size_t kProtobufOneLinerMaxLength = 50;

template <typename T>
class TypeWithoutFormatter<T, kProtobuf> {
 public:
  static void PrintValue(const T& value, ::std::ostream* os) {
    std::string pretty_str = value.ShortDebugString();
    if (pretty_str.length() > kProtobufOneLinerMaxLength) {
      pretty_str = "\n" + value.DebugString();
    }
    *os << ("<" + pretty_str + ">");
  }
};

template <typename T>
class TypeWithoutFormatter<T, kConvertibleToInteger> {
 public:
  // Since T has no << operator or PrintTo() but can be implicitly
  // converted to BiggestInt, we print it as a BiggestInt.
  //
  // Most likely T is an enum type (either named or unnamed), in which
  // case printing it as an integer is the desired behavior.  In case
  // T is not an enum, printing it as an integer is the best we can do
  // given that it has no user-defined printer.
  static void PrintValue(const T& value, ::std::ostream* os) {
    const internal::BiggestInt kBigInt = value;
    *os << kBigInt;
  }
};

#if GTEST_HAS_ABSL
template <typename T>
class TypeWithoutFormatter<T, kConvertibleToStringView> {
 public:
  // Since T has neither operator<< nor PrintTo() but can be implicitly
  // converted to absl::string_view, we print it as a absl::string_view.
  //
  // Note: the implementation is further below, as it depends on
  // internal::PrintTo symbol which is defined later in the file.
  static void PrintValue(const T& value, ::std::ostream* os);
};
#endif

// Prints the given value to the given ostream.  If the value is a
// protocol message, its debug string is printed; if it's an enum or
// of a type implicitly convertible to BiggestInt, it's printed as an
// integer; otherwise the bytes in the value are printed.  This is
// what UniversalPrinter<T>::Print() does when it knows nothing about
// type T and T has neither << operator nor PrintTo().
//
// A user can override this behavior for a class type Foo by defining
// a << operator in the namespace where Foo is defined.
//
// We put this operator in namespace 'internal2' instead of 'internal'
// to simplify the implementation, as much code in 'internal' needs to
// use << in STL, which would conflict with our own << were it defined
// in 'internal'.
//
// Note that this operator<< takes a generic std::basic_ostream<Char,
// CharTraits> type instead of the more restricted std::ostream.  If
// we define it to take an std::ostream instead, we'll get an
// "ambiguous overloads" compiler error when trying to print a type
// Foo that supports streaming to std::basic_ostream<Char,
// CharTraits>, as the compiler cannot tell whether
// operator<<(std::ostream&, const T&) or
// operator<<(std::basic_stream<Char, CharTraits>, const Foo&) is more
// specific.
template <typename Char, typename CharTraits, typename T>
::std::basic_ostream<Char, CharTraits>& operator<<(
    ::std::basic_ostream<Char, CharTraits>& os, const T& x) {
  TypeWithoutFormatter<T, (internal::IsAProtocolMessage<T>::value
                               ? kProtobuf
                               : std::is_convertible<
                                     const T&, internal::BiggestInt>::value
                                     ? kConvertibleToInteger
                                     :
#if GTEST_HAS_ABSL
                                     std::is_convertible<
                                         const T&, absl::string_view>::value
                                         ? kConvertibleToStringView
                                         :
#endif
                                         kOtherType)>::PrintValue(x, &os);
  return os;
}

}  // namespace internal2
}  // namespace testing

// This namespace MUST NOT BE NESTED IN ::testing, or the name look-up
// magic needed for implementing UniversalPrinter won't work.
namespace testing_internal {

// Used to print a value that is not an STL-style container when the
// user doesn't define PrintTo() for it.
template <typename T>
void DefaultPrintNonContainerTo(const T& value, ::std::ostream* os) {
  // With the following statement, during unqualified name lookup,
  // testing::internal2::operator<< appears as if it was declared in
  // the nearest enclosing namespace that contains both
  // ::testing_internal and ::testing::internal2, i.e. the global
  // namespace.  For more details, refer to the C++ Standard section
  // 7.3.4-1 [namespace.udir].  This allows us to fall back onto
  // testing::internal2::operator<< in case T doesn't come with a <<
  // operator.
  //
  // We cannot write 'using ::testing::internal2::operator<<;', which
  // gcc 3.3 fails to compile due to a compiler bug.
  using namespace ::testing::internal2;  // NOLINT

  // Assuming T is defined in namespace foo, in the next statement,
  // the compiler will consider all of:
  //
  //   1. foo::operator<< (thanks to Koenig look-up),
  //   2. ::operator<< (as the current namespace is enclosed in ::),
  //   3. testing::internal2::operator<< (thanks to the using statement above).
  //
  // The operator<< whose type matches T best will be picked.
  //
  // We deliberately allow #2 to be a candidate, as sometimes it's
  // impossible to define #1 (e.g. when foo is ::std, defining
  // anything in it is undefined behavior unless you are a compiler
  // vendor.).
  *os << value;
}

}  // namespace testing_internal

namespace testing {
namespace internal {

// FormatForComparison<ToPrint, OtherOperand>::Format(value) formats a
// value of type ToPrint that is an operand of a comparison assertion
// (e.g. ASSERT_EQ).  OtherOperand is the type of the other operand in
// the comparison, and is used to help determine the best way to
// format the value.  In particular, when the value is a C string
// (char pointer) and the other operand is an STL string object, we
// want to format the C string as a string, since we know it is
// compared by value with the string object.  If the value is a char
// pointer but the other operand is not an STL string object, we don't
// know whether the pointer is supposed to point to a NUL-terminated
// string, and thus want to print it as a pointer to be safe.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.

// The default case.
template <typename ToPrint, typename OtherOperand>
class FormatForComparison {
 public:
  static ::std::string Format(const ToPrint& value) {
    return ::testing::PrintToString(value);
  }
};

// Array.
template <typename ToPrint, size_t N, typename OtherOperand>
class FormatForComparison<ToPrint[N], OtherOperand> {
 public:
  static ::std::string Format(const ToPrint* value) {
    return FormatForComparison<const ToPrint*, OtherOperand>::Format(value);
  }
};

// By default, print C string as pointers to be safe, as we don't know
// whether they actually point to a NUL-terminated string.

#define GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(CharType)                \
  template <typename OtherOperand>                                      \
  class FormatForComparison<CharType*, OtherOperand> {                  \
   public:                                                              \
    static ::std::string Format(CharType* value) {                      \
      return ::testing::PrintToString(static_cast<const void*>(value)); \
    }                                                                   \
  }

GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(char);
GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const char);
GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(wchar_t);
GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const wchar_t);

#undef GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_

// If a C string is compared with an STL string object, we know it's meant
// to point to a NUL-terminated string, and thus can print it as a string.

#define GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(CharType, OtherStringType) \
  template <>                                                           \
  class FormatForComparison<CharType*, OtherStringType> {               \
   public:                                                              \
    static ::std::string Format(CharType* value) {                      \
      return ::testing::PrintToString(value);                           \
    }                                                                   \
  }

GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string);
GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string);

#if GTEST_HAS_STD_WSTRING
GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::std::wstring);
GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::std::wstring);
#endif

#undef GTEST_IMPL_FORMAT_C_STRING_AS_STRING_

// Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc)
// operand to be used in a failure message.  The type (but not value)
// of the other operand may affect the format.  This allows us to
// print a char* as a raw pointer when it is compared against another
// char* or void*, and print it as a C string when it is compared
// against an std::string object, for example.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
template <typename T1, typename T2>
std::string FormatForComparisonFailureMessage(
    const T1& value, const T2& /* other_operand */) {
  return FormatForComparison<T1, T2>::Format(value);
}

// UniversalPrinter<T>::Print(value, ostream_ptr) prints the given
// value to the given ostream.  The caller must ensure that
// 'ostream_ptr' is not NULL, or the behavior is undefined.
//
// We define UniversalPrinter as a class template (as opposed to a
// function template), as we need to partially specialize it for
// reference types, which cannot be done with function templates.
template <typename T>
class UniversalPrinter;

template <typename T>
void UniversalPrint(const T& value, ::std::ostream* os);

enum DefaultPrinterType {
  kPrintContainer,
  kPrintPointer,
  kPrintFunctionPointer,
  kPrintOther,
};
template <DefaultPrinterType type> struct WrapPrinterType {};

// Used to print an STL-style container when the user doesn't define
// a PrintTo() for it.
template <typename C>
void DefaultPrintTo(WrapPrinterType<kPrintContainer> /* dummy */,
                    const C& container, ::std::ostream* os) {
  const size_t kMaxCount = 32;  // The maximum number of elements to print.
  *os << '{';
  size_t count = 0;
  for (typename C::const_iterator it = container.begin();
       it != container.end(); ++it, ++count) {
    if (count > 0) {
      *os << ',';
      if (count == kMaxCount) {  // Enough has been printed.
        *os << " ...";
        break;
      }
    }
    *os << ' ';
    // We cannot call PrintTo(*it, os) here as PrintTo() doesn't
    // handle *it being a native array.
    internal::UniversalPrint(*it, os);
  }

  if (count > 0) {
    *os << ' ';
  }
  *os << '}';
}

// Used to print a pointer that is neither a char pointer nor a member
// pointer, when the user doesn't define PrintTo() for it.  (A member
// variable pointer or member function pointer doesn't really point to
// a location in the address space.  Their representation is
// implementation-defined.  Therefore they will be printed as raw
// bytes.)
template <typename T>
void DefaultPrintTo(WrapPrinterType<kPrintPointer> /* dummy */,
                    T* p, ::std::ostream* os) {
  if (p == nullptr) {
    *os << "NULL";
  } else {
    // T is not a function type.  We just call << to print p,
    // relying on ADL to pick up user-defined << for their pointer
    // types, if any.
    *os << p;
  }
}
template <typename T>
void DefaultPrintTo(WrapPrinterType<kPrintFunctionPointer> /* dummy */,
                    T* p, ::std::ostream* os) {
  if (p == nullptr) {
    *os << "NULL";
  } else {
    // T is a function type, so '*os << p' doesn't do what we want
    // (it just prints p as bool).  We want to print p as a const
    // void*.
    *os << reinterpret_cast<const void*>(p);
  }
}

// Used to print a non-container, non-pointer value when the user
// doesn't define PrintTo() for it.
template <typename T>
void DefaultPrintTo(WrapPrinterType<kPrintOther> /* dummy */,
                    const T& value, ::std::ostream* os) {
  ::testing_internal::DefaultPrintNonContainerTo(value, os);
}

// Prints the given value using the << operator if it has one;
// otherwise prints the bytes in it.  This is what
// UniversalPrinter<T>::Print() does when PrintTo() is not specialized
// or overloaded for type T.
//
// A user can override this behavior for a class type Foo by defining
// an overload of PrintTo() in the namespace where Foo is defined.  We
// give the user this option as sometimes defining a << operator for
// Foo is not desirable (e.g. the coding style may prevent doing it,
// or there is already a << operator but it doesn't do what the user
// wants).
template <typename T>
void PrintTo(const T& value, ::std::ostream* os) {
  // DefaultPrintTo() is overloaded.  The type of its first argument
  // determines which version will be picked.
  //
  // Note that we check for container types here, prior to we check
  // for protocol message types in our operator<<.  The rationale is:
  //
  // For protocol messages, we want to give people a chance to
  // override Google Mock's format by defining a PrintTo() or
  // operator<<.  For STL containers, other formats can be
  // incompatible with Google Mock's format for the container
  // elements; therefore we check for container types here to ensure
  // that our format is used.
  //
  // Note that MSVC and clang-cl do allow an implicit conversion from
  // pointer-to-function to pointer-to-object, but clang-cl warns on it.
  // So don't use ImplicitlyConvertible if it can be helped since it will
  // cause this warning, and use a separate overload of DefaultPrintTo for
  // function pointers so that the `*os << p` in the object pointer overload
  // doesn't cause that warning either.
  DefaultPrintTo(
      WrapPrinterType <
                  (sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) &&
              !IsRecursiveContainer<T>::value
          ? kPrintContainer
          : !std::is_pointer<T>::value
                ? kPrintOther
                : std::is_function<typename std::remove_pointer<T>::type>::value
                      ? kPrintFunctionPointer
                      : kPrintPointer > (),
      value, os);
}

// The following list of PrintTo() overloads tells
// UniversalPrinter<T>::Print() how to print standard types (built-in
// types, strings, plain arrays, and pointers).

// Overloads for various char types.
GTEST_API_ void PrintTo(unsigned char c, ::std::ostream* os);
GTEST_API_ void PrintTo(signed char c, ::std::ostream* os);
inline void PrintTo(char c, ::std::ostream* os) {
  // When printing a plain char, we always treat it as unsigned.  This
  // way, the output won't be affected by whether the compiler thinks
  // char is signed or not.
  PrintTo(static_cast<unsigned char>(c), os);
}

// Overloads for other simple built-in types.
inline void PrintTo(bool x, ::std::ostream* os) {
  *os << (x ? "true" : "false");
}

// Overload for wchar_t type.
// Prints a wchar_t as a symbol if it is printable or as its internal
// code otherwise and also as its decimal code (except for L'\0').
// The L'\0' char is printed as "L'\\0'". The decimal code is printed
// as signed integer when wchar_t is implemented by the compiler
// as a signed type and is printed as an unsigned integer when wchar_t
// is implemented as an unsigned type.
GTEST_API_ void PrintTo(wchar_t wc, ::std::ostream* os);

// Overloads for C strings.
GTEST_API_ void PrintTo(const char* s, ::std::ostream* os);
inline void PrintTo(char* s, ::std::ostream* os) {
  PrintTo(ImplicitCast_<const char*>(s), os);
}

// signed/unsigned char is often used for representing binary data, so
// we print pointers to it as void* to be safe.
inline void PrintTo(const signed char* s, ::std::ostream* os) {
  PrintTo(ImplicitCast_<const void*>(s), os);
}
inline void PrintTo(signed char* s, ::std::ostream* os) {
  PrintTo(ImplicitCast_<const void*>(s), os);
}
inline void PrintTo(const unsigned char* s, ::std::ostream* os) {
  PrintTo(ImplicitCast_<const void*>(s), os);
}
inline void PrintTo(unsigned char* s, ::std::ostream* os) {
  PrintTo(ImplicitCast_<const void*>(s), os);
}

// MSVC can be configured to define wchar_t as a typedef of unsigned
// short.  It defines _NATIVE_WCHAR_T_DEFINED when wchar_t is a native
// type.  When wchar_t is a typedef, defining an overload for const
// wchar_t* would cause unsigned short* be printed as a wide string,
// possibly causing invalid memory accesses.
#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
// Overloads for wide C strings
GTEST_API_ void PrintTo(const wchar_t* s, ::std::ostream* os);
inline void PrintTo(wchar_t* s, ::std::ostream* os) {
  PrintTo(ImplicitCast_<const wchar_t*>(s), os);
}
#endif

// Overload for C arrays.  Multi-dimensional arrays are printed
// properly.

// Prints the given number of elements in an array, without printing
// the curly braces.
template <typename T>
void PrintRawArrayTo(const T a[], size_t count, ::std::ostream* os) {
  UniversalPrint(a[0], os);
  for (size_t i = 1; i != count; i++) {
    *os << ", ";
    UniversalPrint(a[i], os);
  }
}

// Overloads for ::std::string.
GTEST_API_ void PrintStringTo(const ::std::string&s, ::std::ostream* os);
inline void PrintTo(const ::std::string& s, ::std::ostream* os) {
  PrintStringTo(s, os);
}

// Overloads for ::std::wstring.
#if GTEST_HAS_STD_WSTRING
GTEST_API_ void PrintWideStringTo(const ::std::wstring&s, ::std::ostream* os);
inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
  PrintWideStringTo(s, os);
}
#endif  // GTEST_HAS_STD_WSTRING

#if GTEST_HAS_ABSL
// Overload for absl::string_view.
inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
  PrintTo(::std::string(sp), os);
}
#endif  // GTEST_HAS_ABSL

inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }

template <typename T>
void PrintTo(std::reference_wrapper<T> ref, ::std::ostream* os) {
  UniversalPrinter<T&>::Print(ref.get(), os);
}

// Helper function for printing a tuple.  T must be instantiated with
// a tuple type.
template <typename T>
void PrintTupleTo(const T&, std::integral_constant<size_t, 0>,
                  ::std::ostream*) {}

template <typename T, size_t I>
void PrintTupleTo(const T& t, std::integral_constant<size_t, I>,
                  ::std::ostream* os) {
  PrintTupleTo(t, std::integral_constant<size_t, I - 1>(), os);
  GTEST_INTENTIONAL_CONST_COND_PUSH_()
  if (I > 1) {
    GTEST_INTENTIONAL_CONST_COND_POP_()
    *os << ", ";
  }
  UniversalPrinter<typename std::tuple_element<I - 1, T>::type>::Print(
      std::get<I - 1>(t), os);
}

template <typename... Types>
void PrintTo(const ::std::tuple<Types...>& t, ::std::ostream* os) {
  *os << "(";
  PrintTupleTo(t, std::integral_constant<size_t, sizeof...(Types)>(), os);
  *os << ")";
}

// Overload for std::pair.
template <typename T1, typename T2>
void PrintTo(const ::std::pair<T1, T2>& value, ::std::ostream* os) {
  *os << '(';
  // We cannot use UniversalPrint(value.first, os) here, as T1 may be
  // a reference type.  The same for printing value.second.
  UniversalPrinter<T1>::Print(value.first, os);
  *os << ", ";
  UniversalPrinter<T2>::Print(value.second, os);
  *os << ')';
}

// Implements printing a non-reference type T by letting the compiler
// pick the right overload of PrintTo() for T.
template <typename T>
class UniversalPrinter {
 public:
  // MSVC warns about adding const to a function type, so we want to
  // disable the warning.
  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4180)

  // Note: we deliberately don't call this PrintTo(), as that name
  // conflicts with ::testing::internal::PrintTo in the body of the
  // function.
  static void Print(const T& value, ::std::ostream* os) {
    // By default, ::testing::internal::PrintTo() is used for printing
    // the value.
    //
    // Thanks to Koenig look-up, if T is a class and has its own
    // PrintTo() function defined in its namespace, that function will
    // be visible here.  Since it is more specific than the generic ones
    // in ::testing::internal, it will be picked by the compiler in the
    // following statement - exactly what we want.
    PrintTo(value, os);
  }

  GTEST_DISABLE_MSC_WARNINGS_POP_()
};

#if GTEST_HAS_ABSL

// Printer for absl::optional

template <typename T>
class UniversalPrinter<::absl::optional<T>> {
 public:
  static void Print(const ::absl::optional<T>& value, ::std::ostream* os) {
    *os << '(';
    if (!value) {
      *os << "nullopt";
    } else {
      UniversalPrint(*value, os);
    }
    *os << ')';
  }
};

// Printer for absl::variant

template <typename... T>
class UniversalPrinter<::absl::variant<T...>> {
 public:
  static void Print(const ::absl::variant<T...>& value, ::std::ostream* os) {
    *os << '(';
    absl::visit(Visitor{os}, value);
    *os << ')';
  }

 private:
  struct Visitor {
    template <typename U>
    void operator()(const U& u) const {
      *os << "'" << GetTypeName<U>() << "' with value ";
      UniversalPrint(u, os);
    }
    ::std::ostream* os;
  };
};

#endif  // GTEST_HAS_ABSL

// UniversalPrintArray(begin, len, os) prints an array of 'len'
// elements, starting at address 'begin'.
template <typename T>
void UniversalPrintArray(const T* begin, size_t len, ::std::ostream* os) {
  if (len == 0) {
    *os << "{}";
  } else {
    *os << "{ ";
    const size_t kThreshold = 18;
    const size_t kChunkSize = 8;
    // If the array has more than kThreshold elements, we'll have to
    // omit some details by printing only the first and the last
    // kChunkSize elements.
    if (len <= kThreshold) {
      PrintRawArrayTo(begin, len, os);
    } else {
      PrintRawArrayTo(begin, kChunkSize, os);
      *os << ", ..., ";
      PrintRawArrayTo(begin + len - kChunkSize, kChunkSize, os);
    }
    *os << " }";
  }
}
// This overload prints a (const) char array compactly.
GTEST_API_ void UniversalPrintArray(
    const char* begin, size_t len, ::std::ostream* os);

// This overload prints a (const) wchar_t array compactly.
GTEST_API_ void UniversalPrintArray(
    const wchar_t* begin, size_t len, ::std::ostream* os);

// Implements printing an array type T[N].
template <typename T, size_t N>
class UniversalPrinter<T[N]> {
 public:
  // Prints the given array, omitting some elements when there are too
  // many.
  static void Print(const T (&a)[N], ::std::ostream* os) {
    UniversalPrintArray(a, N, os);
  }
};

// Implements printing a reference type T&.
template <typename T>
class UniversalPrinter<T&> {
 public:
  // MSVC warns about adding const to a function type, so we want to
  // disable the warning.
  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4180)

  static void Print(const T& value, ::std::ostream* os) {
    // Prints the address of the value.  We use reinterpret_cast here
    // as static_cast doesn't compile when T is a function type.
    *os << "@" << reinterpret_cast<const void*>(&value) << " ";

    // Then prints the value itself.
    UniversalPrint(value, os);
  }

  GTEST_DISABLE_MSC_WARNINGS_POP_()
};

// Prints a value tersely: for a reference type, the referenced value
// (but not the address) is printed; for a (const) char pointer, the
// NUL-terminated string (but not the pointer) is printed.

template <typename T>
class UniversalTersePrinter {
 public:
  static void Print(const T& value, ::std::ostream* os) {
    UniversalPrint(value, os);
  }
};
template <typename T>
class UniversalTersePrinter<T&> {
 public:
  static void Print(const T& value, ::std::ostream* os) {
    UniversalPrint(value, os);
  }
};
template <typename T, size_t N>
class UniversalTersePrinter<T[N]> {
 public:
  static void Print(const T (&value)[N], ::std::ostream* os) {
    UniversalPrinter<T[N]>::Print(value, os);
  }
};
template <>
class UniversalTersePrinter<const char*> {
 public:
  static void Print(const char* str, ::std::ostream* os) {
    if (str == nullptr) {
      *os << "NULL";
    } else {
      UniversalPrint(std::string(str), os);
    }
  }
};
template <>
class UniversalTersePrinter<char*> {
 public:
  static void Print(char* str, ::std::ostream* os) {
    UniversalTersePrinter<const char*>::Print(str, os);
  }
};

#if GTEST_HAS_STD_WSTRING
template <>
class UniversalTersePrinter<const wchar_t*> {
 public:
  static void Print(const wchar_t* str, ::std::ostream* os) {
    if (str == nullptr) {
      *os << "NULL";
    } else {
      UniversalPrint(::std::wstring(str), os);
    }
  }
};
#endif

template <>
class UniversalTersePrinter<wchar_t*> {
 public:
  static void Print(wchar_t* str, ::std::ostream* os) {
    UniversalTersePrinter<const wchar_t*>::Print(str, os);
  }
};

template <typename T>
void UniversalTersePrint(const T& value, ::std::ostream* os) {
  UniversalTersePrinter<T>::Print(value, os);
}

// Prints a value using the type inferred by the compiler.  The
// difference between this and UniversalTersePrint() is that for a
// (const) char pointer, this prints both the pointer and the
// NUL-terminated string.
template <typename T>
void UniversalPrint(const T& value, ::std::ostream* os) {
  // A workarond for the bug in VC++ 7.1 that prevents us from instantiating
  // UniversalPrinter with T directly.
  typedef T T1;
  UniversalPrinter<T1>::Print(value, os);
}

typedef ::std::vector< ::std::string> Strings;

  // Tersely prints the first N fields of a tuple to a string vector,
  // one element for each field.
template <typename Tuple>
void TersePrintPrefixToStrings(const Tuple&, std::integral_constant<size_t, 0>,
                               Strings*) {}
template <typename Tuple, size_t I>
void TersePrintPrefixToStrings(const Tuple& t,
                               std::integral_constant<size_t, I>,
                               Strings* strings) {
  TersePrintPrefixToStrings(t, std::integral_constant<size_t, I - 1>(),
                            strings);
  ::std::stringstream ss;
  UniversalTersePrint(std::get<I - 1>(t), &ss);
  strings->push_back(ss.str());
}

// Prints the fields of a tuple tersely to a string vector, one
// element for each field.  See the comment before
// UniversalTersePrint() for how we define "tersely".
template <typename Tuple>
Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
  Strings result;
  TersePrintPrefixToStrings(
      value, std::integral_constant<size_t, std::tuple_size<Tuple>::value>(),
      &result);
  return result;
}

}  // namespace internal

#if GTEST_HAS_ABSL
namespace internal2 {
template <typename T>
void TypeWithoutFormatter<T, kConvertibleToStringView>::PrintValue(
    const T& value, ::std::ostream* os) {
  internal::PrintTo(absl::string_view(value), os);
}
}  // namespace internal2
#endif

template <typename T>
::std::string PrintToString(const T& value) {
  ::std::stringstream ss;
  internal::UniversalTersePrinter<T>::Print(value, &ss);
  return ss.str();
}

}  // namespace testing

// Include any custom printer added by the local installation.
// We must include this header at the end to make sure it can use the
// declarations from this file.
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// This file provides an injection point for custom printers in a local
// installation of gTest.
// It will be included from gtest-printers.h and the overrides in this file
// will be visible to everyone.
//
// Injection point for custom user configurations. See README for details
//
// ** Custom implementation starts here **

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PRINTERS_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PRINTERS_H_

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PRINTERS_H_

#endif  // GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_

// MSVC warning C5046 is new as of VS2017 version 15.8.
#if defined(_MSC_VER) && _MSC_VER >= 1915
#define GTEST_MAYBE_5046_ 5046
#else
#define GTEST_MAYBE_5046_
#endif

GTEST_DISABLE_MSC_WARNINGS_PUSH_(
    4251 GTEST_MAYBE_5046_ /* class A needs to have dll-interface to be used by
                              clients of class B */
    /* Symbol involving type with internal linkage not defined */)

namespace testing {

// To implement a matcher Foo for type T, define:
//   1. a class FooMatcherImpl that implements the
//      MatcherInterface<T> interface, and
//   2. a factory function that creates a Matcher<T> object from a
//      FooMatcherImpl*.
//
// The two-level delegation design makes it possible to allow a user
// to write "v" instead of "Eq(v)" where a Matcher is expected, which
// is impossible if we pass matchers by pointers.  It also eases
// ownership management as Matcher objects can now be copied like
// plain values.

// MatchResultListener is an abstract class.  Its << operator can be
// used by a matcher to explain why a value matches or doesn't match.
//
class MatchResultListener {
 public:
  // Creates a listener object with the given underlying ostream.  The
  // listener does not own the ostream, and does not dereference it
  // in the constructor or destructor.
  explicit MatchResultListener(::std::ostream* os) : stream_(os) {}
  virtual ~MatchResultListener() = 0;  // Makes this class abstract.

  // Streams x to the underlying ostream; does nothing if the ostream
  // is NULL.
  template <typename T>
  MatchResultListener& operator<<(const T& x) {
    if (stream_ != nullptr) *stream_ << x;
    return *this;
  }

  // Returns the underlying ostream.
  ::std::ostream* stream() { return stream_; }

  // Returns true iff the listener is interested in an explanation of
  // the match result.  A matcher's MatchAndExplain() method can use
  // this information to avoid generating the explanation when no one
  // intends to hear it.
  bool IsInterested() const { return stream_ != nullptr; }

 private:
  ::std::ostream* const stream_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener);
};

inline MatchResultListener::~MatchResultListener() {
}

// An instance of a subclass of this knows how to describe itself as a
// matcher.
class MatcherDescriberInterface {
 public:
  virtual ~MatcherDescriberInterface() {}

  // Describes this matcher to an ostream.  The function should print
  // a verb phrase that describes the property a value matching this
  // matcher should have.  The subject of the verb phrase is the value
  // being matched.  For example, the DescribeTo() method of the Gt(7)
  // matcher prints "is greater than 7".
  virtual void DescribeTo(::std::ostream* os) const = 0;

  // Describes the negation of this matcher to an ostream.  For
  // example, if the description of this matcher is "is greater than
  // 7", the negated description could be "is not greater than 7".
  // You are not required to override this when implementing
  // MatcherInterface, but it is highly advised so that your matcher
  // can produce good error messages.
  virtual void DescribeNegationTo(::std::ostream* os) const {
    *os << "not (";
    DescribeTo(os);
    *os << ")";
  }
};

// The implementation of a matcher.
template <typename T>
class MatcherInterface : public MatcherDescriberInterface {
 public:
  // Returns true iff the matcher matches x; also explains the match
  // result to 'listener' if necessary (see the next paragraph), in
  // the form of a non-restrictive relative clause ("which ...",
  // "whose ...", etc) that describes x.  For example, the
  // MatchAndExplain() method of the Pointee(...) matcher should
  // generate an explanation like "which points to ...".
  //
  // Implementations of MatchAndExplain() should add an explanation of
  // the match result *if and only if* they can provide additional
  // information that's not already present (or not obvious) in the
  // print-out of x and the matcher's description.  Whether the match
  // succeeds is not a factor in deciding whether an explanation is
  // needed, as sometimes the caller needs to print a failure message
  // when the match succeeds (e.g. when the matcher is used inside
  // Not()).
  //
  // For example, a "has at least 10 elements" matcher should explain
  // what the actual element count is, regardless of the match result,
  // as it is useful information to the reader; on the other hand, an
  // "is empty" matcher probably only needs to explain what the actual
  // size is when the match fails, as it's redundant to say that the
  // size is 0 when the value is already known to be empty.
  //
  // You should override this method when defining a new matcher.
  //
  // It's the responsibility of the caller (Google Test) to guarantee
  // that 'listener' is not NULL.  This helps to simplify a matcher's
  // implementation when it doesn't care about the performance, as it
  // can talk to 'listener' without checking its validity first.
  // However, in order to implement dummy listeners efficiently,
  // listener->stream() may be NULL.
  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;

  // Inherits these methods from MatcherDescriberInterface:
  //   virtual void DescribeTo(::std::ostream* os) const = 0;
  //   virtual void DescribeNegationTo(::std::ostream* os) const;
};

namespace internal {

// Converts a MatcherInterface<T> to a MatcherInterface<const T&>.
template <typename T>
class MatcherInterfaceAdapter : public MatcherInterface<const T&> {
 public:
  explicit MatcherInterfaceAdapter(const MatcherInterface<T>* impl)
      : impl_(impl) {}
  ~MatcherInterfaceAdapter() override { delete impl_; }

  void DescribeTo(::std::ostream* os) const override { impl_->DescribeTo(os); }

  void DescribeNegationTo(::std::ostream* os) const override {
    impl_->DescribeNegationTo(os);
  }

  bool MatchAndExplain(const T& x,
                       MatchResultListener* listener) const override {
    return impl_->MatchAndExplain(x, listener);
  }

 private:
  const MatcherInterface<T>* const impl_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatcherInterfaceAdapter);
};

struct AnyEq {
  template <typename A, typename B>
  bool operator()(const A& a, const B& b) const { return a == b; }
};
struct AnyNe {
  template <typename A, typename B>
  bool operator()(const A& a, const B& b) const { return a != b; }
};
struct AnyLt {
  template <typename A, typename B>
  bool operator()(const A& a, const B& b) const { return a < b; }
};
struct AnyGt {
  template <typename A, typename B>
  bool operator()(const A& a, const B& b) const { return a > b; }
};
struct AnyLe {
  template <typename A, typename B>
  bool operator()(const A& a, const B& b) const { return a <= b; }
};
struct AnyGe {
  template <typename A, typename B>
  bool operator()(const A& a, const B& b) const { return a >= b; }
};

// A match result listener that ignores the explanation.
class DummyMatchResultListener : public MatchResultListener {
 public:
  DummyMatchResultListener() : MatchResultListener(nullptr) {}

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener);
};

// A match result listener that forwards the explanation to a given
// ostream.  The difference between this and MatchResultListener is
// that the former is concrete.
class StreamMatchResultListener : public MatchResultListener {
 public:
  explicit StreamMatchResultListener(::std::ostream* os)
      : MatchResultListener(os) {}

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener);
};

// An internal class for implementing Matcher<T>, which will derive
// from it.  We put functionalities common to all Matcher<T>
// specializations here to avoid code duplication.
template <typename T>
class MatcherBase {
 public:
  // Returns true iff the matcher matches x; also explains the match
  // result to 'listener'.
  bool MatchAndExplain(const T& x, MatchResultListener* listener) const {
    return impl_->MatchAndExplain(x, listener);
  }

  // Returns true iff this matcher matches x.
  bool Matches(const T& x) const {
    DummyMatchResultListener dummy;
    return MatchAndExplain(x, &dummy);
  }

  // Describes this matcher to an ostream.
  void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }

  // Describes the negation of this matcher to an ostream.
  void DescribeNegationTo(::std::ostream* os) const {
    impl_->DescribeNegationTo(os);
  }

  // Explains why x matches, or doesn't match, the matcher.
  void ExplainMatchResultTo(const T& x, ::std::ostream* os) const {
    StreamMatchResultListener listener(os);
    MatchAndExplain(x, &listener);
  }

  // Returns the describer for this matcher object; retains ownership
  // of the describer, which is only guaranteed to be alive when
  // this matcher object is alive.
  const MatcherDescriberInterface* GetDescriber() const {
    return impl_.get();
  }

 protected:
  MatcherBase() {}

  // Constructs a matcher from its implementation.
  explicit MatcherBase(const MatcherInterface<const T&>* impl) : impl_(impl) {}

  template <typename U>
  explicit MatcherBase(
      const MatcherInterface<U>* impl,
      typename internal::EnableIf<
          !internal::IsSame<U, const U&>::value>::type* = nullptr)
      : impl_(new internal::MatcherInterfaceAdapter<U>(impl)) {}

  MatcherBase(const MatcherBase&) = default;
  MatcherBase& operator=(const MatcherBase&) = default;
  MatcherBase(MatcherBase&&) = default;
  MatcherBase& operator=(MatcherBase&&) = default;

  virtual ~MatcherBase() {}

 private:
  std::shared_ptr<const MatcherInterface<const T&>> impl_;
};

}  // namespace internal

// A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
// object that can check whether a value of type T matches.  The
// implementation of Matcher<T> is just a std::shared_ptr to const
// MatcherInterface<T>.  Don't inherit from Matcher!
template <typename T>
class Matcher : public internal::MatcherBase<T> {
 public:
  // Constructs a null matcher.  Needed for storing Matcher objects in STL
  // containers.  A default-constructed matcher is not yet initialized.  You
  // cannot use it until a valid value has been assigned to it.
  explicit Matcher() {}  // NOLINT

  // Constructs a matcher from its implementation.
  explicit Matcher(const MatcherInterface<const T&>* impl)
      : internal::MatcherBase<T>(impl) {}

  template <typename U>
  explicit Matcher(const MatcherInterface<U>* impl,
                   typename internal::EnableIf<
                       !internal::IsSame<U, const U&>::value>::type* = nullptr)
      : internal::MatcherBase<T>(impl) {}

  // Implicit constructor here allows people to write
  // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes
  Matcher(T value);  // NOLINT
};

// The following two specializations allow the user to write str
// instead of Eq(str) and "foo" instead of Eq("foo") when a std::string
// matcher is expected.
template <>
class GTEST_API_ Matcher<const std::string&>
    : public internal::MatcherBase<const std::string&> {
 public:
  Matcher() {}

  explicit Matcher(const MatcherInterface<const std::string&>* impl)
      : internal::MatcherBase<const std::string&>(impl) {}

  // Allows the user to write str instead of Eq(str) sometimes, where
  // str is a std::string object.
  Matcher(const std::string& s);  // NOLINT

  // Allows the user to write "foo" instead of Eq("foo") sometimes.
  Matcher(const char* s);  // NOLINT
};

template <>
class GTEST_API_ Matcher<std::string>
    : public internal::MatcherBase<std::string> {
 public:
  Matcher() {}

  explicit Matcher(const MatcherInterface<const std::string&>* impl)
      : internal::MatcherBase<std::string>(impl) {}
  explicit Matcher(const MatcherInterface<std::string>* impl)
      : internal::MatcherBase<std::string>(impl) {}

  // Allows the user to write str instead of Eq(str) sometimes, where
  // str is a string object.
  Matcher(const std::string& s);  // NOLINT

  // Allows the user to write "foo" instead of Eq("foo") sometimes.
  Matcher(const char* s);  // NOLINT
};

#if GTEST_HAS_ABSL
// The following two specializations allow the user to write str
// instead of Eq(str) and "foo" instead of Eq("foo") when a absl::string_view
// matcher is expected.
template <>
class GTEST_API_ Matcher<const absl::string_view&>
    : public internal::MatcherBase<const absl::string_view&> {
 public:
  Matcher() {}

  explicit Matcher(const MatcherInterface<const absl::string_view&>* impl)
      : internal::MatcherBase<const absl::string_view&>(impl) {}

  // Allows the user to write str instead of Eq(str) sometimes, where
  // str is a std::string object.
  Matcher(const std::string& s);  // NOLINT

  // Allows the user to write "foo" instead of Eq("foo") sometimes.
  Matcher(const char* s);  // NOLINT

  // Allows the user to pass absl::string_views directly.
  Matcher(absl::string_view s);  // NOLINT
};

template <>
class GTEST_API_ Matcher<absl::string_view>
    : public internal::MatcherBase<absl::string_view> {
 public:
  Matcher() {}

  explicit Matcher(const MatcherInterface<const absl::string_view&>* impl)
      : internal::MatcherBase<absl::string_view>(impl) {}
  explicit Matcher(const MatcherInterface<absl::string_view>* impl)
      : internal::MatcherBase<absl::string_view>(impl) {}

  // Allows the user to write str instead of Eq(str) sometimes, where
  // str is a std::string object.
  Matcher(const std::string& s);  // NOLINT

  // Allows the user to write "foo" instead of Eq("foo") sometimes.
  Matcher(const char* s);  // NOLINT

  // Allows the user to pass absl::string_views directly.
  Matcher(absl::string_view s);  // NOLINT
};
#endif  // GTEST_HAS_ABSL

// Prints a matcher in a human-readable format.
template <typename T>
std::ostream& operator<<(std::ostream& os, const Matcher<T>& matcher) {
  matcher.DescribeTo(&os);
  return os;
}

// The PolymorphicMatcher class template makes it easy to implement a
// polymorphic matcher (i.e. a matcher that can match values of more
// than one type, e.g. Eq(n) and NotNull()).
//
// To define a polymorphic matcher, a user should provide an Impl
// class that has a DescribeTo() method and a DescribeNegationTo()
// method, and define a member function (or member function template)
//
//   bool MatchAndExplain(const Value& value,
//                        MatchResultListener* listener) const;
//
// See the definition of NotNull() for a complete example.
template <class Impl>
class PolymorphicMatcher {
 public:
  explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}

  // Returns a mutable reference to the underlying matcher
  // implementation object.
  Impl& mutable_impl() { return impl_; }

  // Returns an immutable reference to the underlying matcher
  // implementation object.
  const Impl& impl() const { return impl_; }

  template <typename T>
  operator Matcher<T>() const {
    return Matcher<T>(new MonomorphicImpl<const T&>(impl_));
  }

 private:
  template <typename T>
  class MonomorphicImpl : public MatcherInterface<T> {
   public:
    explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}

    virtual void DescribeTo(::std::ostream* os) const { impl_.DescribeTo(os); }

    virtual void DescribeNegationTo(::std::ostream* os) const {
      impl_.DescribeNegationTo(os);
    }

    virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
      return impl_.MatchAndExplain(x, listener);
    }

   private:
    const Impl impl_;
  };

  Impl impl_;
};

// Creates a matcher from its implementation.
// DEPRECATED: Especially in the generic code, prefer:
//   Matcher<T>(new MyMatcherImpl<const T&>(...));
//
// MakeMatcher may create a Matcher that accepts its argument by value, which
// leads to unnecessary copies & lack of support for non-copyable types.
template <typename T>
inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) {
  return Matcher<T>(impl);
}

// Creates a polymorphic matcher from its implementation.  This is
// easier to use than the PolymorphicMatcher<Impl> constructor as it
// doesn't require you to explicitly write the template argument, e.g.
//
//   MakePolymorphicMatcher(foo);
// vs
//   PolymorphicMatcher<TypeOfFoo>(foo);
template <class Impl>
inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) {
  return PolymorphicMatcher<Impl>(impl);
}

namespace internal {
// Implements a matcher that compares a given value with a
// pre-supplied value using one of the ==, <=, <, etc, operators.  The
// two values being compared don't have to have the same type.
//
// The matcher defined here is polymorphic (for example, Eq(5) can be
// used to match an int, a short, a double, etc).  Therefore we use
// a template type conversion operator in the implementation.
//
// The following template definition assumes that the Rhs parameter is
// a "bare" type (i.e. neither 'const T' nor 'T&').
template <typename D, typename Rhs, typename Op>
class ComparisonBase {
 public:
  explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {}
  template <typename Lhs>
  operator Matcher<Lhs>() const {
    return Matcher<Lhs>(new Impl<const Lhs&>(rhs_));
  }

 private:
  template <typename T>
  static const T& Unwrap(const T& v) { return v; }
  template <typename T>
  static const T& Unwrap(std::reference_wrapper<T> v) { return v; }

  template <typename Lhs, typename = Rhs>
  class Impl : public MatcherInterface<Lhs> {
   public:
    explicit Impl(const Rhs& rhs) : rhs_(rhs) {}
    bool MatchAndExplain(Lhs lhs,
                         MatchResultListener* /* listener */) const override {
      return Op()(lhs, Unwrap(rhs_));
    }
    void DescribeTo(::std::ostream* os) const override {
      *os << D::Desc() << " ";
      UniversalPrint(Unwrap(rhs_), os);
    }
    void DescribeNegationTo(::std::ostream* os) const override {
      *os << D::NegatedDesc() <<  " ";
      UniversalPrint(Unwrap(rhs_), os);
    }

   private:
    Rhs rhs_;
  };
  Rhs rhs_;
};

template <typename Rhs>
class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> {
 public:
  explicit EqMatcher(const Rhs& rhs)
      : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) { }
  static const char* Desc() { return "is equal to"; }
  static const char* NegatedDesc() { return "isn't equal to"; }
};
template <typename Rhs>
class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> {
 public:
  explicit NeMatcher(const Rhs& rhs)
      : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) { }
  static const char* Desc() { return "isn't equal to"; }
  static const char* NegatedDesc() { return "is equal to"; }
};
template <typename Rhs>
class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> {
 public:
  explicit LtMatcher(const Rhs& rhs)
      : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) { }
  static const char* Desc() { return "is <"; }
  static const char* NegatedDesc() { return "isn't <"; }
};
template <typename Rhs>
class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> {
 public:
  explicit GtMatcher(const Rhs& rhs)
      : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) { }
  static const char* Desc() { return "is >"; }
  static const char* NegatedDesc() { return "isn't >"; }
};
template <typename Rhs>
class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> {
 public:
  explicit LeMatcher(const Rhs& rhs)
      : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) { }
  static const char* Desc() { return "is <="; }
  static const char* NegatedDesc() { return "isn't <="; }
};
template <typename Rhs>
class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> {
 public:
  explicit GeMatcher(const Rhs& rhs)
      : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) { }
  static const char* Desc() { return "is >="; }
  static const char* NegatedDesc() { return "isn't >="; }
};

// Implements polymorphic matchers MatchesRegex(regex) and
// ContainsRegex(regex), which can be used as a Matcher<T> as long as
// T can be converted to a string.
class MatchesRegexMatcher {
 public:
  MatchesRegexMatcher(const RE* regex, bool full_match)
      : regex_(regex), full_match_(full_match) {}

#if GTEST_HAS_ABSL
  bool MatchAndExplain(const absl::string_view& s,
                       MatchResultListener* listener) const {
    return MatchAndExplain(std::string(s), listener);
  }
#endif  // GTEST_HAS_ABSL

  // Accepts pointer types, particularly:
  //   const char*
  //   char*
  //   const wchar_t*
  //   wchar_t*
  template <typename CharType>
  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
    return s != nullptr && MatchAndExplain(std::string(s), listener);
  }

  // Matches anything that can convert to std::string.
  //
  // This is a template, not just a plain function with const std::string&,
  // because absl::string_view has some interfering non-explicit constructors.
  template <class MatcheeStringType>
  bool MatchAndExplain(const MatcheeStringType& s,
                       MatchResultListener* /* listener */) const {
    const std::string& s2(s);
    return full_match_ ? RE::FullMatch(s2, *regex_)
                       : RE::PartialMatch(s2, *regex_);
  }

  void DescribeTo(::std::ostream* os) const {
    *os << (full_match_ ? "matches" : "contains") << " regular expression ";
    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
  }

  void DescribeNegationTo(::std::ostream* os) const {
    *os << "doesn't " << (full_match_ ? "match" : "contain")
        << " regular expression ";
    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
  }

 private:
  const std::shared_ptr<const RE> regex_;
  const bool full_match_;
};
}  // namespace internal

// Matches a string that fully matches regular expression 'regex'.
// The matcher takes ownership of 'regex'.
inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
    const internal::RE* regex) {
  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, true));
}
inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
    const std::string& regex) {
  return MatchesRegex(new internal::RE(regex));
}

// Matches a string that contains regular expression 'regex'.
// The matcher takes ownership of 'regex'.
inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
    const internal::RE* regex) {
  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, false));
}
inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
    const std::string& regex) {
  return ContainsRegex(new internal::RE(regex));
}

// Creates a polymorphic matcher that matches anything equal to x.
// Note: if the parameter of Eq() were declared as const T&, Eq("foo")
// wouldn't compile.
template <typename T>
inline internal::EqMatcher<T> Eq(T x) { return internal::EqMatcher<T>(x); }

// Constructs a Matcher<T> from a 'value' of type T.  The constructed
// matcher matches any value that's equal to 'value'.
template <typename T>
Matcher<T>::Matcher(T value) { *this = Eq(value); }

// Creates a monomorphic matcher that matches anything with type Lhs
// and equal to rhs.  A user may need to use this instead of Eq(...)
// in order to resolve an overloading ambiguity.
//
// TypedEq<T>(x) is just a convenient short-hand for Matcher<T>(Eq(x))
// or Matcher<T>(x), but more readable than the latter.
//
// We could define similar monomorphic matchers for other comparison
// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do
// it yet as those are used much less than Eq() in practice.  A user
// can always write Matcher<T>(Lt(5)) to be explicit about the type,
// for example.
template <typename Lhs, typename Rhs>
inline Matcher<Lhs> TypedEq(const Rhs& rhs) { return Eq(rhs); }

// Creates a polymorphic matcher that matches anything >= x.
template <typename Rhs>
inline internal::GeMatcher<Rhs> Ge(Rhs x) {
  return internal::GeMatcher<Rhs>(x);
}

// Creates a polymorphic matcher that matches anything > x.
template <typename Rhs>
inline internal::GtMatcher<Rhs> Gt(Rhs x) {
  return internal::GtMatcher<Rhs>(x);
}

// Creates a polymorphic matcher that matches anything <= x.
template <typename Rhs>
inline internal::LeMatcher<Rhs> Le(Rhs x) {
  return internal::LeMatcher<Rhs>(x);
}

// Creates a polymorphic matcher that matches anything < x.
template <typename Rhs>
inline internal::LtMatcher<Rhs> Lt(Rhs x) {
  return internal::LtMatcher<Rhs>(x);
}

// Creates a polymorphic matcher that matches anything != x.
template <typename Rhs>
inline internal::NeMatcher<Rhs> Ne(Rhs x) {
  return internal::NeMatcher<Rhs>(x);
}
}  // namespace testing

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251 5046

#endif  // GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_

#include <stdio.h>
#include <memory>

namespace testing {
namespace internal {

GTEST_DECLARE_string_(internal_run_death_test);

// Names of the flags (needed for parsing Google Test flags).
const char kDeathTestStyleFlag[] = "death_test_style";
const char kDeathTestUseFork[] = "death_test_use_fork";
const char kInternalRunDeathTestFlag[] = "internal_run_death_test";

#if GTEST_HAS_DEATH_TEST

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

// DeathTest is a class that hides much of the complexity of the
// GTEST_DEATH_TEST_ macro.  It is abstract; its static Create method
// returns a concrete class that depends on the prevailing death test
// style, as defined by the --gtest_death_test_style and/or
// --gtest_internal_run_death_test flags.

// In describing the results of death tests, these terms are used with
// the corresponding definitions:
//
// exit status:  The integer exit information in the format specified
//               by wait(2)
// exit code:    The integer code passed to exit(3), _exit(2), or
//               returned from main()
class GTEST_API_ DeathTest {
 public:
  // Create returns false if there was an error determining the
  // appropriate action to take for the current death test; for example,
  // if the gtest_death_test_style flag is set to an invalid value.
  // The LastMessage method will return a more detailed message in that
  // case.  Otherwise, the DeathTest pointer pointed to by the "test"
  // argument is set.  If the death test should be skipped, the pointer
  // is set to NULL; otherwise, it is set to the address of a new concrete
  // DeathTest object that controls the execution of the current test.
  static bool Create(const char* statement, Matcher<const std::string&> matcher,
                     const char* file, int line, DeathTest** test);
  DeathTest();
  virtual ~DeathTest() { }

  // A helper class that aborts a death test when it's deleted.
  class ReturnSentinel {
   public:
    explicit ReturnSentinel(DeathTest* test) : test_(test) { }
    ~ReturnSentinel() { test_->Abort(TEST_ENCOUNTERED_RETURN_STATEMENT); }
   private:
    DeathTest* const test_;
    GTEST_DISALLOW_COPY_AND_ASSIGN_(ReturnSentinel);
  } GTEST_ATTRIBUTE_UNUSED_;

  // An enumeration of possible roles that may be taken when a death
  // test is encountered.  EXECUTE means that the death test logic should
  // be executed immediately.  OVERSEE means that the program should prepare
  // the appropriate environment for a child process to execute the death
  // test, then wait for it to complete.
  enum TestRole { OVERSEE_TEST, EXECUTE_TEST };

  // An enumeration of the three reasons that a test might be aborted.
  enum AbortReason {
    TEST_ENCOUNTERED_RETURN_STATEMENT,
    TEST_THREW_EXCEPTION,
    TEST_DID_NOT_DIE
  };

  // Assumes one of the above roles.
  virtual TestRole AssumeRole() = 0;

  // Waits for the death test to finish and returns its status.
  virtual int Wait() = 0;

  // Returns true if the death test passed; that is, the test process
  // exited during the test, its exit status matches a user-supplied
  // predicate, and its stderr output matches a user-supplied regular
  // expression.
  // The user-supplied predicate may be a macro expression rather
  // than a function pointer or functor, or else Wait and Passed could
  // be combined.
  virtual bool Passed(bool exit_status_ok) = 0;

  // Signals that the death test did not die as expected.
  virtual void Abort(AbortReason reason) = 0;

  // Returns a human-readable outcome message regarding the outcome of
  // the last death test.
  static const char* LastMessage();

  static void set_last_death_test_message(const std::string& message);

 private:
  // A string containing a description of the outcome of the last death test.
  static std::string last_death_test_message_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
};

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

// Factory interface for death tests.  May be mocked out for testing.
class DeathTestFactory {
 public:
  virtual ~DeathTestFactory() { }
  virtual bool Create(const char* statement,
                      Matcher<const std::string&> matcher, const char* file,
                      int line, DeathTest** test) = 0;
};

// A concrete DeathTestFactory implementation for normal use.
class DefaultDeathTestFactory : public DeathTestFactory {
 public:
  bool Create(const char* statement, Matcher<const std::string&> matcher,
              const char* file, int line, DeathTest** test) override;
};

// Returns true if exit_status describes a process that was terminated
// by a signal, or exited normally with a nonzero exit code.
GTEST_API_ bool ExitedUnsuccessfully(int exit_status);

// A string passed to EXPECT_DEATH (etc.) is caught by one of these overloads
// and interpreted as a regex (rather than an Eq matcher) for legacy
// compatibility.
inline Matcher<const ::std::string&> MakeDeathTestMatcher(
    ::testing::internal::RE regex) {
  return ContainsRegex(regex.pattern());
}
inline Matcher<const ::std::string&> MakeDeathTestMatcher(const char* regex) {
  return ContainsRegex(regex);
}
inline Matcher<const ::std::string&> MakeDeathTestMatcher(
    const ::std::string& regex) {
  return ContainsRegex(regex);
}

// If a Matcher<const ::std::string&> is passed to EXPECT_DEATH (etc.), it's
// used directly.
inline Matcher<const ::std::string&> MakeDeathTestMatcher(
    Matcher<const ::std::string&> matcher) {
  return matcher;
}

// Traps C++ exceptions escaping statement and reports them as test
// failures. Note that trapping SEH exceptions is not implemented here.
# if GTEST_HAS_EXCEPTIONS
#  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
  try { \
    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
  } catch (const ::std::exception& gtest_exception) { \
    fprintf(\
        stderr, \
        "\n%s: Caught std::exception-derived exception escaping the " \
        "death test statement. Exception message: %s\n", \
        ::testing::internal::FormatFileLocation(__FILE__, __LINE__).c_str(), \
        gtest_exception.what()); \
    fflush(stderr); \
    death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
  } catch (...) { \
    death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
  }

# else
#  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
  GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)

# endif

// This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
// ASSERT_EXIT*, and EXPECT_EXIT*.
#define GTEST_DEATH_TEST_(statement, predicate, regex_or_matcher, fail)        \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                                \
  if (::testing::internal::AlwaysTrue()) {                                     \
    ::testing::internal::DeathTest* gtest_dt;                                  \
    if (!::testing::internal::DeathTest::Create(                               \
            #statement,                                                        \
            ::testing::internal::MakeDeathTestMatcher(regex_or_matcher),       \
            __FILE__, __LINE__, &gtest_dt)) {                                  \
      goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__);                        \
    }                                                                          \
    if (gtest_dt != nullptr) {                                                 \
      std::unique_ptr< ::testing::internal::DeathTest> gtest_dt_ptr(gtest_dt); \
      switch (gtest_dt->AssumeRole()) {                                        \
        case ::testing::internal::DeathTest::OVERSEE_TEST:                     \
          if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) {                \
            goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__);                  \
          }                                                                    \
          break;                                                               \
        case ::testing::internal::DeathTest::EXECUTE_TEST: {                   \
          ::testing::internal::DeathTest::ReturnSentinel gtest_sentinel(       \
              gtest_dt);                                                       \
          GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt);            \
          gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE);   \
          break;                                                               \
        }                                                                      \
        default:                                                               \
          break;                                                               \
      }                                                                        \
    }                                                                          \
  } else                                                                       \
    GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__)                                \
        : fail(::testing::internal::DeathTest::LastMessage())
// The symbol "fail" here expands to something into which a message
// can be streamed.

// This macro is for implementing ASSERT/EXPECT_DEBUG_DEATH when compiled in
// NDEBUG mode. In this case we need the statements to be executed and the macro
// must accept a streamed message even though the message is never printed.
// The regex object is not evaluated, but it is used to prevent "unused"
// warnings and to avoid an expression that doesn't compile in debug mode.
#define GTEST_EXECUTE_STATEMENT_(statement, regex_or_matcher)    \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                  \
  if (::testing::internal::AlwaysTrue()) {                       \
    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);   \
  } else if (!::testing::internal::AlwaysTrue()) {               \
    ::testing::internal::MakeDeathTestMatcher(regex_or_matcher); \
  } else                                                         \
    ::testing::Message()

// A class representing the parsed contents of the
// --gtest_internal_run_death_test flag, as it existed when
// RUN_ALL_TESTS was called.
class InternalRunDeathTestFlag {
 public:
  InternalRunDeathTestFlag(const std::string& a_file,
                           int a_line,
                           int an_index,
                           int a_write_fd)
      : file_(a_file), line_(a_line), index_(an_index),
        write_fd_(a_write_fd) {}

  ~InternalRunDeathTestFlag() {
    if (write_fd_ >= 0)
      posix::Close(write_fd_);
  }

  const std::string& file() const { return file_; }
  int line() const { return line_; }
  int index() const { return index_; }
  int write_fd() const { return write_fd_; }

 private:
  std::string file_;
  int line_;
  int index_;
  int write_fd_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(InternalRunDeathTestFlag);
};

// Returns a newly created InternalRunDeathTestFlag object with fields
// initialized from the GTEST_FLAG(internal_run_death_test) flag if
// the flag is specified; otherwise returns NULL.
InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag();

#endif  // GTEST_HAS_DEATH_TEST

}  // namespace internal
}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_

namespace testing {

// This flag controls the style of death tests.  Valid values are "threadsafe",
// meaning that the death test child process will re-execute the test binary
// from the start, running only a single death test, or "fast",
// meaning that the child process will execute the test logic immediately
// after forking.
GTEST_DECLARE_string_(death_test_style);

#if GTEST_HAS_DEATH_TEST

namespace internal {

// Returns a Boolean value indicating whether the caller is currently
// executing in the context of the death test child process.  Tools such as
// Valgrind heap checkers may need this to modify their behavior in death
// tests.  IMPORTANT: This is an internal utility.  Using it may break the
// implementation of death tests.  User code MUST NOT use it.
GTEST_API_ bool InDeathTestChild();

}  // namespace internal

// The following macros are useful for writing death tests.

// Here's what happens when an ASSERT_DEATH* or EXPECT_DEATH* is
// executed:
//
//   1. It generates a warning if there is more than one active
//   thread.  This is because it's safe to fork() or clone() only
//   when there is a single thread.
//
//   2. The parent process clone()s a sub-process and runs the death
//   test in it; the sub-process exits with code 0 at the end of the
//   death test, if it hasn't exited already.
//
//   3. The parent process waits for the sub-process to terminate.
//
//   4. The parent process checks the exit code and error message of
//   the sub-process.
//
// Examples:
//
//   ASSERT_DEATH(server.SendMessage(56, "Hello"), "Invalid port number");
//   for (int i = 0; i < 5; i++) {
//     EXPECT_DEATH(server.ProcessRequest(i),
//                  "Invalid request .* in ProcessRequest()")
//                  << "Failed to die on request " << i;
//   }
//
//   ASSERT_EXIT(server.ExitNow(), ::testing::ExitedWithCode(0), "Exiting");
//
//   bool KilledBySIGHUP(int exit_code) {
//     return WIFSIGNALED(exit_code) && WTERMSIG(exit_code) == SIGHUP;
//   }
//
//   ASSERT_EXIT(client.HangUpServer(), KilledBySIGHUP, "Hanging up!");
//
// On the regular expressions used in death tests:
//
//   GOOGLETEST_CM0005 DO NOT DELETE
//   On POSIX-compliant systems (*nix), we use the <regex.h> library,
//   which uses the POSIX extended regex syntax.
//
//   On other platforms (e.g. Windows or Mac), we only support a simple regex
//   syntax implemented as part of Google Test.  This limited
//   implementation should be enough most of the time when writing
//   death tests; though it lacks many features you can find in PCRE
//   or POSIX extended regex syntax.  For example, we don't support
//   union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
//   repetition count ("x{5,7}"), among others.
//
//   Below is the syntax that we do support.  We chose it to be a
//   subset of both PCRE and POSIX extended regex, so it's easy to
//   learn wherever you come from.  In the following: 'A' denotes a
//   literal character, period (.), or a single \\ escape sequence;
//   'x' and 'y' denote regular expressions; 'm' and 'n' are for
//   natural numbers.
//
//     c     matches any literal character c
//     \\d   matches any decimal digit
//     \\D   matches any character that's not a decimal digit
//     \\f   matches \f
//     \\n   matches \n
//     \\r   matches \r
//     \\s   matches any ASCII whitespace, including \n
//     \\S   matches any character that's not a whitespace
//     \\t   matches \t
//     \\v   matches \v
//     \\w   matches any letter, _, or decimal digit
//     \\W   matches any character that \\w doesn't match
//     \\c   matches any literal character c, which must be a punctuation
//     .     matches any single character except \n
//     A?    matches 0 or 1 occurrences of A
//     A*    matches 0 or many occurrences of A
//     A+    matches 1 or many occurrences of A
//     ^     matches the beginning of a string (not that of each line)
//     $     matches the end of a string (not that of each line)
//     xy    matches x followed by y
//
//   If you accidentally use PCRE or POSIX extended regex features
//   not implemented by us, you will get a run-time failure.  In that
//   case, please try to rewrite your regular expression within the
//   above syntax.
//
//   This implementation is *not* meant to be as highly tuned or robust
//   as a compiled regex library, but should perform well enough for a
//   death test, which already incurs significant overhead by launching
//   a child process.
//
// Known caveats:
//
//   A "threadsafe" style death test obtains the path to the test
//   program from argv[0] and re-executes it in the sub-process.  For
//   simplicity, the current implementation doesn't search the PATH
//   when launching the sub-process.  This means that the user must
//   invoke the test program via a path that contains at least one
//   path separator (e.g. path/to/foo_test and
//   /absolute/path/to/bar_test are fine, but foo_test is not).  This
//   is rarely a problem as people usually don't put the test binary
//   directory in PATH.
//

// Asserts that a given statement causes the program to exit, with an
// integer exit status that satisfies predicate, and emitting error output
// that matches regex.
# define ASSERT_EXIT(statement, predicate, regex) \
    GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_FATAL_FAILURE_)

// Like ASSERT_EXIT, but continues on to successive tests in the
// test suite, if any:
# define EXPECT_EXIT(statement, predicate, regex) \
    GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_NONFATAL_FAILURE_)

// Asserts that a given statement causes the program to exit, either by
// explicitly exiting with a nonzero exit code or being killed by a
// signal, and emitting error output that matches regex.
# define ASSERT_DEATH(statement, regex) \
    ASSERT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)

// Like ASSERT_DEATH, but continues on to successive tests in the
// test suite, if any:
# define EXPECT_DEATH(statement, regex) \
    EXPECT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)

// Two predicate classes that can be used in {ASSERT,EXPECT}_EXIT*:

// Tests that an exit code describes a normal exit with a given exit code.
class GTEST_API_ ExitedWithCode {
 public:
  explicit ExitedWithCode(int exit_code);
  bool operator()(int exit_status) const;
 private:
  // No implementation - assignment is unsupported.
  void operator=(const ExitedWithCode& other);

  const int exit_code_;
};

# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
// Tests that an exit code describes an exit due to termination by a
// given signal.
// GOOGLETEST_CM0006 DO NOT DELETE
class GTEST_API_ KilledBySignal {
 public:
  explicit KilledBySignal(int signum);
  bool operator()(int exit_status) const;
 private:
  const int signum_;
};
# endif  // !GTEST_OS_WINDOWS

// EXPECT_DEBUG_DEATH asserts that the given statements die in debug mode.
// The death testing framework causes this to have interesting semantics,
// since the sideeffects of the call are only visible in opt mode, and not
// in debug mode.
//
// In practice, this can be used to test functions that utilize the
// LOG(DFATAL) macro using the following style:
//
// int DieInDebugOr12(int* sideeffect) {
//   if (sideeffect) {
//     *sideeffect = 12;
//   }
//   LOG(DFATAL) << "death";
//   return 12;
// }
//
// TEST(TestSuite, TestDieOr12WorksInDgbAndOpt) {
//   int sideeffect = 0;
//   // Only asserts in dbg.
//   EXPECT_DEBUG_DEATH(DieInDebugOr12(&sideeffect), "death");
//
// #ifdef NDEBUG
//   // opt-mode has sideeffect visible.
//   EXPECT_EQ(12, sideeffect);
// #else
//   // dbg-mode no visible sideeffect.
//   EXPECT_EQ(0, sideeffect);
// #endif
// }
//
// This will assert that DieInDebugReturn12InOpt() crashes in debug
// mode, usually due to a DCHECK or LOG(DFATAL), but returns the
// appropriate fallback value (12 in this case) in opt mode. If you
// need to test that a function has appropriate side-effects in opt
// mode, include assertions against the side-effects.  A general
// pattern for this is:
//
// EXPECT_DEBUG_DEATH({
//   // Side-effects here will have an effect after this statement in
//   // opt mode, but none in debug mode.
//   EXPECT_EQ(12, DieInDebugOr12(&sideeffect));
// }, "death");
//
# ifdef NDEBUG

#  define EXPECT_DEBUG_DEATH(statement, regex) \
  GTEST_EXECUTE_STATEMENT_(statement, regex)

#  define ASSERT_DEBUG_DEATH(statement, regex) \
  GTEST_EXECUTE_STATEMENT_(statement, regex)

# else

#  define EXPECT_DEBUG_DEATH(statement, regex) \
  EXPECT_DEATH(statement, regex)

#  define ASSERT_DEBUG_DEATH(statement, regex) \
  ASSERT_DEATH(statement, regex)

# endif  // NDEBUG for EXPECT_DEBUG_DEATH
#endif  // GTEST_HAS_DEATH_TEST

// This macro is used for implementing macros such as
// EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED on systems where
// death tests are not supported. Those macros must compile on such systems
// iff EXPECT_DEATH and ASSERT_DEATH compile with the same parameters on
// systems that support death tests. This allows one to write such a macro
// on a system that does not support death tests and be sure that it will
// compile on a death-test supporting system. It is exposed publicly so that
// systems that have death-tests with stricter requirements than
// GTEST_HAS_DEATH_TEST can write their own equivalent of
// EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED.
//
// Parameters:
//   statement -  A statement that a macro such as EXPECT_DEATH would test
//                for program termination. This macro has to make sure this
//                statement is compiled but not executed, to ensure that
//                EXPECT_DEATH_IF_SUPPORTED compiles with a certain
//                parameter iff EXPECT_DEATH compiles with it.
//   regex     -  A regex that a macro such as EXPECT_DEATH would use to test
//                the output of statement.  This parameter has to be
//                compiled but not evaluated by this macro, to ensure that
//                this macro only accepts expressions that a macro such as
//                EXPECT_DEATH would accept.
//   terminator - Must be an empty statement for EXPECT_DEATH_IF_SUPPORTED
//                and a return statement for ASSERT_DEATH_IF_SUPPORTED.
//                This ensures that ASSERT_DEATH_IF_SUPPORTED will not
//                compile inside functions where ASSERT_DEATH doesn't
//                compile.
//
//  The branch that has an always false condition is used to ensure that
//  statement and regex are compiled (and thus syntactically correct) but
//  never executed. The unreachable code macro protects the terminator
//  statement from generating an 'unreachable code' warning in case
//  statement unconditionally returns or throws. The Message constructor at
//  the end allows the syntax of streaming additional messages into the
//  macro, for compilational compatibility with EXPECT_DEATH/ASSERT_DEATH.
# define GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, terminator) \
    GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
    if (::testing::internal::AlwaysTrue()) { \
      GTEST_LOG_(WARNING) \
          << "Death tests are not supported on this platform.\n" \
          << "Statement '" #statement "' cannot be verified."; \
    } else if (::testing::internal::AlwaysFalse()) { \
      ::testing::internal::RE::PartialMatch(".*", (regex)); \
      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
      terminator; \
    } else \
      ::testing::Message()

// EXPECT_DEATH_IF_SUPPORTED(statement, regex) and
// ASSERT_DEATH_IF_SUPPORTED(statement, regex) expand to real death tests if
// death tests are supported; otherwise they just issue a warning.  This is
// useful when you are combining death test assertions with normal test
// assertions in one test.
#if GTEST_HAS_DEATH_TEST
# define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
    EXPECT_DEATH(statement, regex)
# define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
    ASSERT_DEATH(statement, regex)
#else
# define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
    GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, )
# define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
    GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, return)
#endif

}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Macros and functions for implementing parameterized tests
// in Google C++ Testing and Mocking Framework (Google Test)
//
// This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
//
// GOOGLETEST_CM0001 DO NOT DELETE
#ifndef GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
#define GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_


// Value-parameterized tests allow you to test your code with different
// parameters without writing multiple copies of the same test.
//
// Here is how you use value-parameterized tests:

#if 0

// To write value-parameterized tests, first you should define a fixture
// class. It is usually derived from testing::TestWithParam<T> (see below for
// another inheritance scheme that's sometimes useful in more complicated
// class hierarchies), where the type of your parameter values.
// TestWithParam<T> is itself derived from testing::Test. T can be any
// copyable type. If it's a raw pointer, you are responsible for managing the
// lifespan of the pointed values.

class FooTest : public ::testing::TestWithParam<const char*> {
  // You can implement all the usual class fixture members here.
};

// Then, use the TEST_P macro to define as many parameterized tests
// for this fixture as you want. The _P suffix is for "parameterized"
// or "pattern", whichever you prefer to think.

TEST_P(FooTest, DoesBlah) {
  // Inside a test, access the test parameter with the GetParam() method
  // of the TestWithParam<T> class:
  EXPECT_TRUE(foo.Blah(GetParam()));
  ...
}

TEST_P(FooTest, HasBlahBlah) {
  ...
}

// Finally, you can use INSTANTIATE_TEST_SUITE_P to instantiate the test
// case with any set of parameters you want. Google Test defines a number
// of functions for generating test parameters. They return what we call
// (surprise!) parameter generators. Here is a summary of them, which
// are all in the testing namespace:
//
//
//  Range(begin, end [, step]) - Yields values {begin, begin+step,
//                               begin+step+step, ...}. The values do not
//                               include end. step defaults to 1.
//  Values(v1, v2, ..., vN)    - Yields values {v1, v2, ..., vN}.
//  ValuesIn(container)        - Yields values from a C-style array, an STL
//  ValuesIn(begin,end)          container, or an iterator range [begin, end).
//  Bool()                     - Yields sequence {false, true}.
//  Combine(g1, g2, ..., gN)   - Yields all combinations (the Cartesian product
//                               for the math savvy) of the values generated
//                               by the N generators.
//
// For more details, see comments at the definitions of these functions below
// in this file.
//
// The following statement will instantiate tests from the FooTest test suite
// each with parameter values "meeny", "miny", and "moe".

INSTANTIATE_TEST_SUITE_P(InstantiationName,
                         FooTest,
                         Values("meeny", "miny", "moe"));

// To distinguish different instances of the pattern, (yes, you
// can instantiate it more than once) the first argument to the
// INSTANTIATE_TEST_SUITE_P macro is a prefix that will be added to the
// actual test suite name. Remember to pick unique prefixes for different
// instantiations. The tests from the instantiation above will have
// these names:
//
//    * InstantiationName/FooTest.DoesBlah/0 for "meeny"
//    * InstantiationName/FooTest.DoesBlah/1 for "miny"
//    * InstantiationName/FooTest.DoesBlah/2 for "moe"
//    * InstantiationName/FooTest.HasBlahBlah/0 for "meeny"
//    * InstantiationName/FooTest.HasBlahBlah/1 for "miny"
//    * InstantiationName/FooTest.HasBlahBlah/2 for "moe"
//
// You can use these names in --gtest_filter.
//
// This statement will instantiate all tests from FooTest again, each
// with parameter values "cat" and "dog":

const char* pets[] = {"cat", "dog"};
INSTANTIATE_TEST_SUITE_P(AnotherInstantiationName, FooTest, ValuesIn(pets));

// The tests from the instantiation above will have these names:
//
//    * AnotherInstantiationName/FooTest.DoesBlah/0 for "cat"
//    * AnotherInstantiationName/FooTest.DoesBlah/1 for "dog"
//    * AnotherInstantiationName/FooTest.HasBlahBlah/0 for "cat"
//    * AnotherInstantiationName/FooTest.HasBlahBlah/1 for "dog"
//
// Please note that INSTANTIATE_TEST_SUITE_P will instantiate all tests
// in the given test suite, whether their definitions come before or
// AFTER the INSTANTIATE_TEST_SUITE_P statement.
//
// Please also note that generator expressions (including parameters to the
// generators) are evaluated in InitGoogleTest(), after main() has started.
// This allows the user on one hand, to adjust generator parameters in order
// to dynamically determine a set of tests to run and on the other hand,
// give the user a chance to inspect the generated tests with Google Test
// reflection API before RUN_ALL_TESTS() is executed.
//
// You can see samples/sample7_unittest.cc and samples/sample8_unittest.cc
// for more examples.
//
// In the future, we plan to publish the API for defining new parameter
// generators. But for now this interface remains part of the internal
// implementation and is subject to change.
//
//
// A parameterized test fixture must be derived from testing::Test and from
// testing::WithParamInterface<T>, where T is the type of the parameter
// values. Inheriting from TestWithParam<T> satisfies that requirement because
// TestWithParam<T> inherits from both Test and WithParamInterface. In more
// complicated hierarchies, however, it is occasionally useful to inherit
// separately from Test and WithParamInterface. For example:

class BaseTest : public ::testing::Test {
  // You can inherit all the usual members for a non-parameterized test
  // fixture here.
};

class DerivedTest : public BaseTest, public ::testing::WithParamInterface<int> {
  // The usual test fixture members go here too.
};

TEST_F(BaseTest, HasFoo) {
  // This is an ordinary non-parameterized test.
}

TEST_P(DerivedTest, DoesBlah) {
  // GetParam works just the same here as if you inherit from TestWithParam.
  EXPECT_TRUE(foo.Blah(GetParam()));
}

#endif  // 0

#include <utility>

// Copyright 2008 Google Inc.
// All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


// Type and function utilities for implementing parameterized tests.

// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_

#include <ctype.h>

#include <cassert>
#include <iterator>
#include <memory>
#include <set>
#include <tuple>
#include <utility>
#include <vector>


namespace testing {
// Input to a parameterized test name generator, describing a test parameter.
// Consists of the parameter value and the integer parameter index.
template <class ParamType>
struct TestParamInfo {
  TestParamInfo(const ParamType& a_param, size_t an_index) :
    param(a_param),
    index(an_index) {}
  ParamType param;
  size_t index;
};

// A builtin parameterized test name generator which returns the result of
// testing::PrintToString.
struct PrintToStringParamName {
  template <class ParamType>
  std::string operator()(const TestParamInfo<ParamType>& info) const {
    return PrintToString(info.param);
  }
};

namespace internal {

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
// Utility Functions

// Outputs a message explaining invalid registration of different
// fixture class for the same test suite. This may happen when
// TEST_P macro is used to define two tests with the same name
// but in different namespaces.
GTEST_API_ void ReportInvalidTestSuiteType(const char* test_suite_name,
                                           CodeLocation code_location);

template <typename> class ParamGeneratorInterface;
template <typename> class ParamGenerator;

// Interface for iterating over elements provided by an implementation
// of ParamGeneratorInterface<T>.
template <typename T>
class ParamIteratorInterface {
 public:
  virtual ~ParamIteratorInterface() {}
  // A pointer to the base generator instance.
  // Used only for the purposes of iterator comparison
  // to make sure that two iterators belong to the same generator.
  virtual const ParamGeneratorInterface<T>* BaseGenerator() const = 0;
  // Advances iterator to point to the next element
  // provided by the generator. The caller is responsible
  // for not calling Advance() on an iterator equal to
  // BaseGenerator()->End().
  virtual void Advance() = 0;
  // Clones the iterator object. Used for implementing copy semantics
  // of ParamIterator<T>.
  virtual ParamIteratorInterface* Clone() const = 0;
  // Dereferences the current iterator and provides (read-only) access
  // to the pointed value. It is the caller's responsibility not to call
  // Current() on an iterator equal to BaseGenerator()->End().
  // Used for implementing ParamGenerator<T>::operator*().
  virtual const T* Current() const = 0;
  // Determines whether the given iterator and other point to the same
  // element in the sequence generated by the generator.
  // Used for implementing ParamGenerator<T>::operator==().
  virtual bool Equals(const ParamIteratorInterface& other) const = 0;
};

// Class iterating over elements provided by an implementation of
// ParamGeneratorInterface<T>. It wraps ParamIteratorInterface<T>
// and implements the const forward iterator concept.
template <typename T>
class ParamIterator {
 public:
  typedef T value_type;
  typedef const T& reference;
  typedef ptrdiff_t difference_type;

  // ParamIterator assumes ownership of the impl_ pointer.
  ParamIterator(const ParamIterator& other) : impl_(other.impl_->Clone()) {}
  ParamIterator& operator=(const ParamIterator& other) {
    if (this != &other)
      impl_.reset(other.impl_->Clone());
    return *this;
  }

  const T& operator*() const { return *impl_->Current(); }
  const T* operator->() const { return impl_->Current(); }
  // Prefix version of operator++.
  ParamIterator& operator++() {
    impl_->Advance();
    return *this;
  }
  // Postfix version of operator++.
  ParamIterator operator++(int /*unused*/) {
    ParamIteratorInterface<T>* clone = impl_->Clone();
    impl_->Advance();
    return ParamIterator(clone);
  }
  bool operator==(const ParamIterator& other) const {
    return impl_.get() == other.impl_.get() || impl_->Equals(*other.impl_);
  }
  bool operator!=(const ParamIterator& other) const {
    return !(*this == other);
  }

 private:
  friend class ParamGenerator<T>;
  explicit ParamIterator(ParamIteratorInterface<T>* impl) : impl_(impl) {}
  std::unique_ptr<ParamIteratorInterface<T> > impl_;
};

// ParamGeneratorInterface<T> is the binary interface to access generators
// defined in other translation units.
template <typename T>
class ParamGeneratorInterface {
 public:
  typedef T ParamType;

  virtual ~ParamGeneratorInterface() {}

  // Generator interface definition
  virtual ParamIteratorInterface<T>* Begin() const = 0;
  virtual ParamIteratorInterface<T>* End() const = 0;
};

// Wraps ParamGeneratorInterface<T> and provides general generator syntax
// compatible with the STL Container concept.
// This class implements copy initialization semantics and the contained
// ParamGeneratorInterface<T> instance is shared among all copies
// of the original object. This is possible because that instance is immutable.
template<typename T>
class ParamGenerator {
 public:
  typedef ParamIterator<T> iterator;

  explicit ParamGenerator(ParamGeneratorInterface<T>* impl) : impl_(impl) {}
  ParamGenerator(const ParamGenerator& other) : impl_(other.impl_) {}

  ParamGenerator& operator=(const ParamGenerator& other) {
    impl_ = other.impl_;
    return *this;
  }

  iterator begin() const { return iterator(impl_->Begin()); }
  iterator end() const { return iterator(impl_->End()); }

 private:
  std::shared_ptr<const ParamGeneratorInterface<T> > impl_;
};

// Generates values from a range of two comparable values. Can be used to
// generate sequences of user-defined types that implement operator+() and
// operator<().
// This class is used in the Range() function.
template <typename T, typename IncrementT>
class RangeGenerator : public ParamGeneratorInterface<T> {
 public:
  RangeGenerator(T begin, T end, IncrementT step)
      : begin_(begin), end_(end),
        step_(step), end_index_(CalculateEndIndex(begin, end, step)) {}
  ~RangeGenerator() override {}

  ParamIteratorInterface<T>* Begin() const override {
    return new Iterator(this, begin_, 0, step_);
  }
  ParamIteratorInterface<T>* End() const override {
    return new Iterator(this, end_, end_index_, step_);
  }

 private:
  class Iterator : public ParamIteratorInterface<T> {
   public:
    Iterator(const ParamGeneratorInterface<T>* base, T value, int index,
             IncrementT step)
        : base_(base), value_(value), index_(index), step_(step) {}
    ~Iterator() override {}

    const ParamGeneratorInterface<T>* BaseGenerator() const override {
      return base_;
    }
    void Advance() override {
      value_ = static_cast<T>(value_ + step_);
      index_++;
    }
    ParamIteratorInterface<T>* Clone() const override {
      return new Iterator(*this);
    }
    const T* Current() const override { return &value_; }
    bool Equals(const ParamIteratorInterface<T>& other) const override {
      // Having the same base generator guarantees that the other
      // iterator is of the same type and we can downcast.
      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
          << "The program attempted to compare iterators "
          << "from different generators." << std::endl;
      const int other_index =
          CheckedDowncastToActualType<const Iterator>(&other)->index_;
      return index_ == other_index;
    }

   private:
    Iterator(const Iterator& other)
        : ParamIteratorInterface<T>(),
          base_(other.base_), value_(other.value_), index_(other.index_),
          step_(other.step_) {}

    // No implementation - assignment is unsupported.
    void operator=(const Iterator& other);

    const ParamGeneratorInterface<T>* const base_;
    T value_;
    int index_;
    const IncrementT step_;
  };  // class RangeGenerator::Iterator

  static int CalculateEndIndex(const T& begin,
                               const T& end,
                               const IncrementT& step) {
    int end_index = 0;
    for (T i = begin; i < end; i = static_cast<T>(i + step))
      end_index++;
    return end_index;
  }

  // No implementation - assignment is unsupported.
  void operator=(const RangeGenerator& other);

  const T begin_;
  const T end_;
  const IncrementT step_;
  // The index for the end() iterator. All the elements in the generated
  // sequence are indexed (0-based) to aid iterator comparison.
  const int end_index_;
};  // class RangeGenerator


// Generates values from a pair of STL-style iterators. Used in the
// ValuesIn() function. The elements are copied from the source range
// since the source can be located on the stack, and the generator
// is likely to persist beyond that stack frame.
template <typename T>
class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
 public:
  template <typename ForwardIterator>
  ValuesInIteratorRangeGenerator(ForwardIterator begin, ForwardIterator end)
      : container_(begin, end) {}
  ~ValuesInIteratorRangeGenerator() override {}

  ParamIteratorInterface<T>* Begin() const override {
    return new Iterator(this, container_.begin());
  }
  ParamIteratorInterface<T>* End() const override {
    return new Iterator(this, container_.end());
  }

 private:
  typedef typename ::std::vector<T> ContainerType;

  class Iterator : public ParamIteratorInterface<T> {
   public:
    Iterator(const ParamGeneratorInterface<T>* base,
             typename ContainerType::const_iterator iterator)
        : base_(base), iterator_(iterator) {}
    ~Iterator() override {}

    const ParamGeneratorInterface<T>* BaseGenerator() const override {
      return base_;
    }
    void Advance() override {
      ++iterator_;
      value_.reset();
    }
    ParamIteratorInterface<T>* Clone() const override {
      return new Iterator(*this);
    }
    // We need to use cached value referenced by iterator_ because *iterator_
    // can return a temporary object (and of type other then T), so just
    // having "return &*iterator_;" doesn't work.
    // value_ is updated here and not in Advance() because Advance()
    // can advance iterator_ beyond the end of the range, and we cannot
    // detect that fact. The client code, on the other hand, is
    // responsible for not calling Current() on an out-of-range iterator.
    const T* Current() const override {
      if (value_.get() == nullptr) value_.reset(new T(*iterator_));
      return value_.get();
    }
    bool Equals(const ParamIteratorInterface<T>& other) const override {
      // Having the same base generator guarantees that the other
      // iterator is of the same type and we can downcast.
      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
          << "The program attempted to compare iterators "
          << "from different generators." << std::endl;
      return iterator_ ==
          CheckedDowncastToActualType<const Iterator>(&other)->iterator_;
    }

   private:
    Iterator(const Iterator& other)
          // The explicit constructor call suppresses a false warning
          // emitted by gcc when supplied with the -Wextra option.
        : ParamIteratorInterface<T>(),
          base_(other.base_),
          iterator_(other.iterator_) {}

    const ParamGeneratorInterface<T>* const base_;
    typename ContainerType::const_iterator iterator_;
    // A cached value of *iterator_. We keep it here to allow access by
    // pointer in the wrapping iterator's operator->().
    // value_ needs to be mutable to be accessed in Current().
    // Use of std::unique_ptr helps manage cached value's lifetime,
    // which is bound by the lifespan of the iterator itself.
    mutable std::unique_ptr<const T> value_;
  };  // class ValuesInIteratorRangeGenerator::Iterator

  // No implementation - assignment is unsupported.
  void operator=(const ValuesInIteratorRangeGenerator& other);

  const ContainerType container_;
};  // class ValuesInIteratorRangeGenerator

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// Default parameterized test name generator, returns a string containing the
// integer test parameter index.
template <class ParamType>
std::string DefaultParamName(const TestParamInfo<ParamType>& info) {
  Message name_stream;
  name_stream << info.index;
  return name_stream.GetString();
}

template <typename T = int>
void TestNotEmpty() {
  static_assert(sizeof(T) == 0, "Empty arguments are not allowed.");
}
template <typename T = int>
void TestNotEmpty(const T&) {}

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// Stores a parameter value and later creates tests parameterized with that
// value.
template <class TestClass>
class ParameterizedTestFactory : public TestFactoryBase {
 public:
  typedef typename TestClass::ParamType ParamType;
  explicit ParameterizedTestFactory(ParamType parameter) :
      parameter_(parameter) {}
  Test* CreateTest() override {
    TestClass::SetParam(&parameter_);
    return new TestClass();
  }

 private:
  const ParamType parameter_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestFactory);
};

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// TestMetaFactoryBase is a base class for meta-factories that create
// test factories for passing into MakeAndRegisterTestInfo function.
template <class ParamType>
class TestMetaFactoryBase {
 public:
  virtual ~TestMetaFactoryBase() {}

  virtual TestFactoryBase* CreateTestFactory(ParamType parameter) = 0;
};

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// TestMetaFactory creates test factories for passing into
// MakeAndRegisterTestInfo function. Since MakeAndRegisterTestInfo receives
// ownership of test factory pointer, same factory object cannot be passed
// into that method twice. But ParameterizedTestSuiteInfo is going to call
// it for each Test/Parameter value combination. Thus it needs meta factory
// creator class.
template <class TestSuite>
class TestMetaFactory
    : public TestMetaFactoryBase<typename TestSuite::ParamType> {
 public:
  using ParamType = typename TestSuite::ParamType;

  TestMetaFactory() {}

  TestFactoryBase* CreateTestFactory(ParamType parameter) override {
    return new ParameterizedTestFactory<TestSuite>(parameter);
  }

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestMetaFactory);
};

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// ParameterizedTestSuiteInfoBase is a generic interface
// to ParameterizedTestSuiteInfo classes. ParameterizedTestSuiteInfoBase
// accumulates test information provided by TEST_P macro invocations
// and generators provided by INSTANTIATE_TEST_SUITE_P macro invocations
// and uses that information to register all resulting test instances
// in RegisterTests method. The ParameterizeTestSuiteRegistry class holds
// a collection of pointers to the ParameterizedTestSuiteInfo objects
// and calls RegisterTests() on each of them when asked.
class ParameterizedTestSuiteInfoBase {
 public:
  virtual ~ParameterizedTestSuiteInfoBase() {}

  // Base part of test suite name for display purposes.
  virtual const std::string& GetTestSuiteName() const = 0;
  // Test case id to verify identity.
  virtual TypeId GetTestSuiteTypeId() const = 0;
  // UnitTest class invokes this method to register tests in this
  // test suite right before running them in RUN_ALL_TESTS macro.
  // This method should not be called more than once on any single
  // instance of a ParameterizedTestSuiteInfoBase derived class.
  virtual void RegisterTests() = 0;

 protected:
  ParameterizedTestSuiteInfoBase() {}

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteInfoBase);
};

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// ParameterizedTestSuiteInfo accumulates tests obtained from TEST_P
// macro invocations for a particular test suite and generators
// obtained from INSTANTIATE_TEST_SUITE_P macro invocations for that
// test suite. It registers tests with all values generated by all
// generators when asked.
template <class TestSuite>
class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
 public:
  // ParamType and GeneratorCreationFunc are private types but are required
  // for declarations of public methods AddTestPattern() and
  // AddTestSuiteInstantiation().
  using ParamType = typename TestSuite::ParamType;
  // A function that returns an instance of appropriate generator type.
  typedef ParamGenerator<ParamType>(GeneratorCreationFunc)();
  using ParamNameGeneratorFunc = std::string(const TestParamInfo<ParamType>&);

  explicit ParameterizedTestSuiteInfo(const char* name,
                                      CodeLocation code_location)
      : test_suite_name_(name), code_location_(code_location) {}

  // Test case base name for display purposes.
  const std::string& GetTestSuiteName() const override {
    return test_suite_name_;
  }
  // Test case id to verify identity.
  TypeId GetTestSuiteTypeId() const override { return GetTypeId<TestSuite>(); }
  // TEST_P macro uses AddTestPattern() to record information
  // about a single test in a LocalTestInfo structure.
  // test_suite_name is the base name of the test suite (without invocation
  // prefix). test_base_name is the name of an individual test without
  // parameter index. For the test SequenceA/FooTest.DoBar/1 FooTest is
  // test suite base name and DoBar is test base name.
  void AddTestPattern(const char* test_suite_name, const char* test_base_name,
                      TestMetaFactoryBase<ParamType>* meta_factory) {
    tests_.push_back(std::shared_ptr<TestInfo>(
        new TestInfo(test_suite_name, test_base_name, meta_factory)));
  }
  // INSTANTIATE_TEST_SUITE_P macro uses AddGenerator() to record information
  // about a generator.
  int AddTestSuiteInstantiation(const std::string& instantiation_name,
                                GeneratorCreationFunc* func,
                                ParamNameGeneratorFunc* name_func,
                                const char* file, int line) {
    instantiations_.push_back(
        InstantiationInfo(instantiation_name, func, name_func, file, line));
    return 0;  // Return value used only to run this method in namespace scope.
  }
  // UnitTest class invokes this method to register tests in this test suite
  // test suites right before running tests in RUN_ALL_TESTS macro.
  // This method should not be called more than once on any single
  // instance of a ParameterizedTestSuiteInfoBase derived class.
  // UnitTest has a guard to prevent from calling this method more than once.
  void RegisterTests() override {
    for (typename TestInfoContainer::iterator test_it = tests_.begin();
         test_it != tests_.end(); ++test_it) {
      std::shared_ptr<TestInfo> test_info = *test_it;
      for (typename InstantiationContainer::iterator gen_it =
               instantiations_.begin(); gen_it != instantiations_.end();
               ++gen_it) {
        const std::string& instantiation_name = gen_it->name;
        ParamGenerator<ParamType> generator((*gen_it->generator)());
        ParamNameGeneratorFunc* name_func = gen_it->name_func;
        const char* file = gen_it->file;
        int line = gen_it->line;

        std::string test_suite_name;
        if ( !instantiation_name.empty() )
          test_suite_name = instantiation_name + "/";
        test_suite_name += test_info->test_suite_base_name;

        size_t i = 0;
        std::set<std::string> test_param_names;
        for (typename ParamGenerator<ParamType>::iterator param_it =
                 generator.begin();
             param_it != generator.end(); ++param_it, ++i) {
          Message test_name_stream;

          std::string param_name = name_func(
              TestParamInfo<ParamType>(*param_it, i));

          GTEST_CHECK_(IsValidParamName(param_name))
              << "Parameterized test name '" << param_name
              << "' is invalid, in " << file
              << " line " << line << std::endl;

          GTEST_CHECK_(test_param_names.count(param_name) == 0)
              << "Duplicate parameterized test name '" << param_name
              << "', in " << file << " line " << line << std::endl;

          test_param_names.insert(param_name);

          test_name_stream << test_info->test_base_name << "/" << param_name;
          MakeAndRegisterTestInfo(
              test_suite_name.c_str(), test_name_stream.GetString().c_str(),
              nullptr,  // No type parameter.
              PrintToString(*param_it).c_str(), code_location_,
              GetTestSuiteTypeId(),
              SuiteApiResolver<TestSuite>::GetSetUpCaseOrSuite(),
              SuiteApiResolver<TestSuite>::GetTearDownCaseOrSuite(),
              test_info->test_meta_factory->CreateTestFactory(*param_it));
        }  // for param_it
      }  // for gen_it
    }  // for test_it
  }    // RegisterTests

 private:
  // LocalTestInfo structure keeps information about a single test registered
  // with TEST_P macro.
  struct TestInfo {
    TestInfo(const char* a_test_suite_base_name, const char* a_test_base_name,
             TestMetaFactoryBase<ParamType>* a_test_meta_factory)
        : test_suite_base_name(a_test_suite_base_name),
          test_base_name(a_test_base_name),
          test_meta_factory(a_test_meta_factory) {}

    const std::string test_suite_base_name;
    const std::string test_base_name;
    const std::unique_ptr<TestMetaFactoryBase<ParamType> > test_meta_factory;
  };
  using TestInfoContainer = ::std::vector<std::shared_ptr<TestInfo> >;
  // Records data received from INSTANTIATE_TEST_SUITE_P macros:
  //  <Instantiation name, Sequence generator creation function,
  //     Name generator function, Source file, Source line>
  struct InstantiationInfo {
      InstantiationInfo(const std::string &name_in,
                        GeneratorCreationFunc* generator_in,
                        ParamNameGeneratorFunc* name_func_in,
                        const char* file_in,
                        int line_in)
          : name(name_in),
            generator(generator_in),
            name_func(name_func_in),
            file(file_in),
            line(line_in) {}

      std::string name;
      GeneratorCreationFunc* generator;
      ParamNameGeneratorFunc* name_func;
      const char* file;
      int line;
  };
  typedef ::std::vector<InstantiationInfo> InstantiationContainer;

  static bool IsValidParamName(const std::string& name) {
    // Check for empty string
    if (name.empty())
      return false;

    // Check for invalid characters
    for (std::string::size_type index = 0; index < name.size(); ++index) {
      if (!isalnum(name[index]) && name[index] != '_')
        return false;
    }

    return true;
  }

  const std::string test_suite_name_;
  CodeLocation code_location_;
  TestInfoContainer tests_;
  InstantiationContainer instantiations_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteInfo);
};  // class ParameterizedTestSuiteInfo

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
template <class TestCase>
using ParameterizedTestCaseInfo = ParameterizedTestSuiteInfo<TestCase>;
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// ParameterizedTestSuiteRegistry contains a map of
// ParameterizedTestSuiteInfoBase classes accessed by test suite names. TEST_P
// and INSTANTIATE_TEST_SUITE_P macros use it to locate their corresponding
// ParameterizedTestSuiteInfo descriptors.
class ParameterizedTestSuiteRegistry {
 public:
  ParameterizedTestSuiteRegistry() {}
  ~ParameterizedTestSuiteRegistry() {
    for (auto& test_suite_info : test_suite_infos_) {
      delete test_suite_info;
    }
  }

  // Looks up or creates and returns a structure containing information about
  // tests and instantiations of a particular test suite.
  template <class TestSuite>
  ParameterizedTestSuiteInfo<TestSuite>* GetTestSuitePatternHolder(
      const char* test_suite_name, CodeLocation code_location) {
    ParameterizedTestSuiteInfo<TestSuite>* typed_test_info = nullptr;
    for (auto& test_suite_info : test_suite_infos_) {
      if (test_suite_info->GetTestSuiteName() == test_suite_name) {
        if (test_suite_info->GetTestSuiteTypeId() != GetTypeId<TestSuite>()) {
          // Complain about incorrect usage of Google Test facilities
          // and terminate the program since we cannot guaranty correct
          // test suite setup and tear-down in this case.
          ReportInvalidTestSuiteType(test_suite_name, code_location);
          posix::Abort();
        } else {
          // At this point we are sure that the object we found is of the same
          // type we are looking for, so we downcast it to that type
          // without further checks.
          typed_test_info = CheckedDowncastToActualType<
              ParameterizedTestSuiteInfo<TestSuite> >(test_suite_info);
        }
        break;
      }
    }
    if (typed_test_info == nullptr) {
      typed_test_info = new ParameterizedTestSuiteInfo<TestSuite>(
          test_suite_name, code_location);
      test_suite_infos_.push_back(typed_test_info);
    }
    return typed_test_info;
  }
  void RegisterTests() {
    for (auto& test_suite_info : test_suite_infos_) {
      test_suite_info->RegisterTests();
    }
  }
//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  template <class TestCase>
  ParameterizedTestCaseInfo<TestCase>* GetTestCasePatternHolder(
      const char* test_case_name, CodeLocation code_location) {
    return GetTestSuitePatternHolder<TestCase>(test_case_name, code_location);
  }

#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

 private:
  using TestSuiteInfoContainer = ::std::vector<ParameterizedTestSuiteInfoBase*>;

  TestSuiteInfoContainer test_suite_infos_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteRegistry);
};

}  // namespace internal

// Forward declarations of ValuesIn(), which is implemented in
// include/gtest/gtest-param-test.h.
template <class Container>
internal::ParamGenerator<typename Container::value_type> ValuesIn(
    const Container& container);

namespace internal {
// Used in the Values() function to provide polymorphic capabilities.

template <typename... Ts>
class ValueArray {
 public:
  ValueArray(Ts... v) : v_{std::move(v)...} {}

  template <typename T>
  operator ParamGenerator<T>() const {  // NOLINT
    return ValuesIn(MakeVector<T>(MakeIndexSequence<sizeof...(Ts)>()));
  }

 private:
  template <typename T, size_t... I>
  std::vector<T> MakeVector(IndexSequence<I...>) const {
    return std::vector<T>{static_cast<T>(v_.template Get<I>())...};
  }

  FlatTuple<Ts...> v_;
};

template <typename... T>
class CartesianProductGenerator
    : public ParamGeneratorInterface<::std::tuple<T...>> {
 public:
  typedef ::std::tuple<T...> ParamType;

  CartesianProductGenerator(const std::tuple<ParamGenerator<T>...>& g)
      : generators_(g) {}
  ~CartesianProductGenerator() override {}

  ParamIteratorInterface<ParamType>* Begin() const override {
    return new Iterator(this, generators_, false);
  }
  ParamIteratorInterface<ParamType>* End() const override {
    return new Iterator(this, generators_, true);
  }

 private:
  template <class I>
  class IteratorImpl;
  template <size_t... I>
  class IteratorImpl<IndexSequence<I...>>
      : public ParamIteratorInterface<ParamType> {
   public:
    IteratorImpl(const ParamGeneratorInterface<ParamType>* base,
             const std::tuple<ParamGenerator<T>...>& generators, bool is_end)
        : base_(base),
          begin_(std::get<I>(generators).begin()...),
          end_(std::get<I>(generators).end()...),
          current_(is_end ? end_ : begin_) {
      ComputeCurrentValue();
    }
    ~IteratorImpl() override {}

    const ParamGeneratorInterface<ParamType>* BaseGenerator() const override {
      return base_;
    }
    // Advance should not be called on beyond-of-range iterators
    // so no component iterators must be beyond end of range, either.
    void Advance() override {
      assert(!AtEnd());
      // Advance the last iterator.
      ++std::get<sizeof...(T) - 1>(current_);
      // if that reaches end, propagate that up.
      AdvanceIfEnd<sizeof...(T) - 1>();
      ComputeCurrentValue();
    }
    ParamIteratorInterface<ParamType>* Clone() const override {
      return new IteratorImpl(*this);
    }

    const ParamType* Current() const override { return current_value_.get(); }

    bool Equals(const ParamIteratorInterface<ParamType>& other) const override {
      // Having the same base generator guarantees that the other
      // iterator is of the same type and we can downcast.
      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
          << "The program attempted to compare iterators "
          << "from different generators." << std::endl;
      const IteratorImpl* typed_other =
          CheckedDowncastToActualType<const IteratorImpl>(&other);

      // We must report iterators equal if they both point beyond their
      // respective ranges. That can happen in a variety of fashions,
      // so we have to consult AtEnd().
      if (AtEnd() && typed_other->AtEnd()) return true;

      bool same = true;
      bool dummy[] = {
          (same = same && std::get<I>(current_) ==
                              std::get<I>(typed_other->current_))...};
      (void)dummy;
      return same;
    }

   private:
    template <size_t ThisI>
    void AdvanceIfEnd() {
      if (std::get<ThisI>(current_) != std::get<ThisI>(end_)) return;

      bool last = ThisI == 0;
      if (last) {
        // We are done. Nothing else to propagate.
        return;
      }

      constexpr size_t NextI = ThisI - (ThisI != 0);
      std::get<ThisI>(current_) = std::get<ThisI>(begin_);
      ++std::get<NextI>(current_);
      AdvanceIfEnd<NextI>();
    }

    void ComputeCurrentValue() {
      if (!AtEnd())
        current_value_ = std::make_shared<ParamType>(*std::get<I>(current_)...);
    }
    bool AtEnd() const {
      bool at_end = false;
      bool dummy[] = {
          (at_end = at_end || std::get<I>(current_) == std::get<I>(end_))...};
      (void)dummy;
      return at_end;
    }

    const ParamGeneratorInterface<ParamType>* const base_;
    std::tuple<typename ParamGenerator<T>::iterator...> begin_;
    std::tuple<typename ParamGenerator<T>::iterator...> end_;
    std::tuple<typename ParamGenerator<T>::iterator...> current_;
    std::shared_ptr<ParamType> current_value_;
  };

  using Iterator = IteratorImpl<typename MakeIndexSequence<sizeof...(T)>::type>;

  std::tuple<ParamGenerator<T>...> generators_;
};

template <class... Gen>
class CartesianProductHolder {
 public:
  CartesianProductHolder(const Gen&... g) : generators_(g...) {}
  template <typename... T>
  operator ParamGenerator<::std::tuple<T...>>() const {
    return ParamGenerator<::std::tuple<T...>>(
        new CartesianProductGenerator<T...>(generators_));
  }

 private:
  std::tuple<Gen...> generators_;
};

}  // namespace internal
}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_

namespace testing {

// Functions producing parameter generators.
//
// Google Test uses these generators to produce parameters for value-
// parameterized tests. When a parameterized test suite is instantiated
// with a particular generator, Google Test creates and runs tests
// for each element in the sequence produced by the generator.
//
// In the following sample, tests from test suite FooTest are instantiated
// each three times with parameter values 3, 5, and 8:
//
// class FooTest : public TestWithParam<int> { ... };
//
// TEST_P(FooTest, TestThis) {
// }
// TEST_P(FooTest, TestThat) {
// }
// INSTANTIATE_TEST_SUITE_P(TestSequence, FooTest, Values(3, 5, 8));
//

// Range() returns generators providing sequences of values in a range.
//
// Synopsis:
// Range(start, end)
//   - returns a generator producing a sequence of values {start, start+1,
//     start+2, ..., }.
// Range(start, end, step)
//   - returns a generator producing a sequence of values {start, start+step,
//     start+step+step, ..., }.
// Notes:
//   * The generated sequences never include end. For example, Range(1, 5)
//     returns a generator producing a sequence {1, 2, 3, 4}. Range(1, 9, 2)
//     returns a generator producing {1, 3, 5, 7}.
//   * start and end must have the same type. That type may be any integral or
//     floating-point type or a user defined type satisfying these conditions:
//     * It must be assignable (have operator=() defined).
//     * It must have operator+() (operator+(int-compatible type) for
//       two-operand version).
//     * It must have operator<() defined.
//     Elements in the resulting sequences will also have that type.
//   * Condition start < end must be satisfied in order for resulting sequences
//     to contain any elements.
//
template <typename T, typename IncrementT>
internal::ParamGenerator<T> Range(T start, T end, IncrementT step) {
  return internal::ParamGenerator<T>(
      new internal::RangeGenerator<T, IncrementT>(start, end, step));
}

template <typename T>
internal::ParamGenerator<T> Range(T start, T end) {
  return Range(start, end, 1);
}

// ValuesIn() function allows generation of tests with parameters coming from
// a container.
//
// Synopsis:
// ValuesIn(const T (&array)[N])
//   - returns a generator producing sequences with elements from
//     a C-style array.
// ValuesIn(const Container& container)
//   - returns a generator producing sequences with elements from
//     an STL-style container.
// ValuesIn(Iterator begin, Iterator end)
//   - returns a generator producing sequences with elements from
//     a range [begin, end) defined by a pair of STL-style iterators. These
//     iterators can also be plain C pointers.
//
// Please note that ValuesIn copies the values from the containers
// passed in and keeps them to generate tests in RUN_ALL_TESTS().
//
// Examples:
//
// This instantiates tests from test suite StringTest
// each with C-string values of "foo", "bar", and "baz":
//
// const char* strings[] = {"foo", "bar", "baz"};
// INSTANTIATE_TEST_SUITE_P(StringSequence, StringTest, ValuesIn(strings));
//
// This instantiates tests from test suite StlStringTest
// each with STL strings with values "a" and "b":
//
// ::std::vector< ::std::string> GetParameterStrings() {
//   ::std::vector< ::std::string> v;
//   v.push_back("a");
//   v.push_back("b");
//   return v;
// }
//
// INSTANTIATE_TEST_SUITE_P(CharSequence,
//                          StlStringTest,
//                          ValuesIn(GetParameterStrings()));
//
//
// This will also instantiate tests from CharTest
// each with parameter values 'a' and 'b':
//
// ::std::list<char> GetParameterChars() {
//   ::std::list<char> list;
//   list.push_back('a');
//   list.push_back('b');
//   return list;
// }
// ::std::list<char> l = GetParameterChars();
// INSTANTIATE_TEST_SUITE_P(CharSequence2,
//                          CharTest,
//                          ValuesIn(l.begin(), l.end()));
//
template <typename ForwardIterator>
internal::ParamGenerator<
  typename ::testing::internal::IteratorTraits<ForwardIterator>::value_type>
ValuesIn(ForwardIterator begin, ForwardIterator end) {
  typedef typename ::testing::internal::IteratorTraits<ForwardIterator>
      ::value_type ParamType;
  return internal::ParamGenerator<ParamType>(
      new internal::ValuesInIteratorRangeGenerator<ParamType>(begin, end));
}

template <typename T, size_t N>
internal::ParamGenerator<T> ValuesIn(const T (&array)[N]) {
  return ValuesIn(array, array + N);
}

template <class Container>
internal::ParamGenerator<typename Container::value_type> ValuesIn(
    const Container& container) {
  return ValuesIn(container.begin(), container.end());
}

// Values() allows generating tests from explicitly specified list of
// parameters.
//
// Synopsis:
// Values(T v1, T v2, ..., T vN)
//   - returns a generator producing sequences with elements v1, v2, ..., vN.
//
// For example, this instantiates tests from test suite BarTest each
// with values "one", "two", and "three":
//
// INSTANTIATE_TEST_SUITE_P(NumSequence,
//                          BarTest,
//                          Values("one", "two", "three"));
//
// This instantiates tests from test suite BazTest each with values 1, 2, 3.5.
// The exact type of values will depend on the type of parameter in BazTest.
//
// INSTANTIATE_TEST_SUITE_P(FloatingNumbers, BazTest, Values(1, 2, 3.5));
//
//
template <typename... T>
internal::ValueArray<T...> Values(T... v) {
  return internal::ValueArray<T...>(std::move(v)...);
}

// Bool() allows generating tests with parameters in a set of (false, true).
//
// Synopsis:
// Bool()
//   - returns a generator producing sequences with elements {false, true}.
//
// It is useful when testing code that depends on Boolean flags. Combinations
// of multiple flags can be tested when several Bool()'s are combined using
// Combine() function.
//
// In the following example all tests in the test suite FlagDependentTest
// will be instantiated twice with parameters false and true.
//
// class FlagDependentTest : public testing::TestWithParam<bool> {
//   virtual void SetUp() {
//     external_flag = GetParam();
//   }
// }
// INSTANTIATE_TEST_SUITE_P(BoolSequence, FlagDependentTest, Bool());
//
inline internal::ParamGenerator<bool> Bool() {
  return Values(false, true);
}

// Combine() allows the user to combine two or more sequences to produce
// values of a Cartesian product of those sequences' elements.
//
// Synopsis:
// Combine(gen1, gen2, ..., genN)
//   - returns a generator producing sequences with elements coming from
//     the Cartesian product of elements from the sequences generated by
//     gen1, gen2, ..., genN. The sequence elements will have a type of
//     std::tuple<T1, T2, ..., TN> where T1, T2, ..., TN are the types
//     of elements from sequences produces by gen1, gen2, ..., genN.
//
// Combine can have up to 10 arguments.
//
// Example:
//
// This will instantiate tests in test suite AnimalTest each one with
// the parameter values tuple("cat", BLACK), tuple("cat", WHITE),
// tuple("dog", BLACK), and tuple("dog", WHITE):
//
// enum Color { BLACK, GRAY, WHITE };
// class AnimalTest
//     : public testing::TestWithParam<std::tuple<const char*, Color> > {...};
//
// TEST_P(AnimalTest, AnimalLooksNice) {...}
//
// INSTANTIATE_TEST_SUITE_P(AnimalVariations, AnimalTest,
//                          Combine(Values("cat", "dog"),
//                                  Values(BLACK, WHITE)));
//
// This will instantiate tests in FlagDependentTest with all variations of two
// Boolean flags:
//
// class FlagDependentTest
//     : public testing::TestWithParam<std::tuple<bool, bool> > {
//   virtual void SetUp() {
//     // Assigns external_flag_1 and external_flag_2 values from the tuple.
//     std::tie(external_flag_1, external_flag_2) = GetParam();
//   }
// };
//
// TEST_P(FlagDependentTest, TestFeature1) {
//   // Test your code using external_flag_1 and external_flag_2 here.
// }
// INSTANTIATE_TEST_SUITE_P(TwoBoolSequence, FlagDependentTest,
//                          Combine(Bool(), Bool()));
//
template <typename... Generator>
internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
  return internal::CartesianProductHolder<Generator...>(g...);
}

#define TEST_P(test_suite_name, test_name)                                     \
  class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                     \
      : public test_suite_name {                                               \
   public:                                                                     \
    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                    \
    virtual void TestBody();                                                   \
                                                                               \
   private:                                                                    \
    static int AddToRegistry() {                                               \
      ::testing::UnitTest::GetInstance()                                       \
          ->parameterized_test_registry()                                      \
          .GetTestSuitePatternHolder<test_suite_name>(                         \
              #test_suite_name,                                                \
              ::testing::internal::CodeLocation(__FILE__, __LINE__))           \
          ->AddTestPattern(                                                    \
              GTEST_STRINGIFY_(test_suite_name), GTEST_STRINGIFY_(test_name),  \
              new ::testing::internal::TestMetaFactory<GTEST_TEST_CLASS_NAME_( \
                  test_suite_name, test_name)>());                             \
      return 0;                                                                \
    }                                                                          \
    static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_;               \
    GTEST_DISALLOW_COPY_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,    \
                                                           test_name));        \
  };                                                                           \
  int GTEST_TEST_CLASS_NAME_(test_suite_name,                                  \
                             test_name)::gtest_registering_dummy_ =            \
      GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::AddToRegistry();     \
  void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody()

// The last argument to INSTANTIATE_TEST_SUITE_P allows the user to specify
// generator and an optional function or functor that generates custom test name
// suffixes based on the test parameters. Such a function or functor should
// accept one argument of type testing::TestParamInfo<class ParamType>, and
// return std::string.
//
// testing::PrintToStringParamName is a builtin test suffix generator that
// returns the value of testing::PrintToString(GetParam()).
//
// Note: test names must be non-empty, unique, and may only contain ASCII
// alphanumeric characters or underscore. Because PrintToString adds quotes
// to std::string and C strings, it won't work for these types.

#define GTEST_EXPAND_(arg) arg
#define GTEST_GET_FIRST_(first, ...) first
#define GTEST_GET_SECOND_(first, second, ...) second

#define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...)                \
  static ::testing::internal::ParamGenerator<test_suite_name::ParamType>      \
      gtest_##prefix##test_suite_name##_EvalGenerator_() {                    \
    return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_));        \
  }                                                                           \
  static ::std::string gtest_##prefix##test_suite_name##_EvalGenerateName_(   \
      const ::testing::TestParamInfo<test_suite_name::ParamType>& info) {     \
    if (::testing::internal::AlwaysFalse()) {                                 \
      ::testing::internal::TestNotEmpty(GTEST_EXPAND_(GTEST_GET_SECOND_(      \
          __VA_ARGS__,                                                        \
          ::testing::internal::DefaultParamName<test_suite_name::ParamType>,  \
          DUMMY_PARAM_)));                                                    \
      auto t = std::make_tuple(__VA_ARGS__);                                  \
      static_assert(std::tuple_size<decltype(t)>::value <= 2,                 \
                    "Too Many Args!");                                        \
    }                                                                         \
    return ((GTEST_EXPAND_(GTEST_GET_SECOND_(                                 \
        __VA_ARGS__,                                                          \
        ::testing::internal::DefaultParamName<test_suite_name::ParamType>,    \
        DUMMY_PARAM_))))(info);                                               \
  }                                                                           \
  static int gtest_##prefix##test_suite_name##_dummy_                         \
      GTEST_ATTRIBUTE_UNUSED_ =                                               \
          ::testing::UnitTest::GetInstance()                                  \
              ->parameterized_test_registry()                                 \
              .GetTestSuitePatternHolder<test_suite_name>(                    \
                  #test_suite_name,                                           \
                  ::testing::internal::CodeLocation(__FILE__, __LINE__))      \
              ->AddTestSuiteInstantiation(                                    \
                  #prefix, &gtest_##prefix##test_suite_name##_EvalGenerator_, \
                  &gtest_##prefix##test_suite_name##_EvalGenerateName_,       \
                  __FILE__, __LINE__)

// Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
#define INSTANTIATE_TEST_CASE_P                                            \
  static_assert(::testing::internal::InstantiateTestCase_P_IsDeprecated(), \
                "");                                                       \
  INSTANTIATE_TEST_SUITE_P
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
// Copyright 2006, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//
// Google C++ Testing and Mocking Framework definitions useful in production code.
// GOOGLETEST_CM0003 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_PROD_H_
#define GTEST_INCLUDE_GTEST_GTEST_PROD_H_

// When you need to test the private or protected members of a class,
// use the FRIEND_TEST macro to declare your tests as friends of the
// class.  For example:
//
// class MyClass {
//  private:
//   void PrivateMethod();
//   FRIEND_TEST(MyClassTest, PrivateMethodWorks);
// };
//
// class MyClassTest : public testing::Test {
//   // ...
// };
//
// TEST_F(MyClassTest, PrivateMethodWorks) {
//   // Can call MyClass::PrivateMethod() here.
// }
//
// Note: The test class must be in the same namespace as the class being tested.
// For example, putting MyClassTest in an anonymous namespace will not work.

#define FRIEND_TEST(test_case_name, test_name)\
friend class test_case_name##_##test_name##_Test

#endif  // GTEST_INCLUDE_GTEST_GTEST_PROD_H_
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
#define GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_

#include <iosfwd>
#include <vector>

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

namespace testing {

// A copyable object representing the result of a test part (i.e. an
// assertion or an explicit FAIL(), ADD_FAILURE(), or SUCCESS()).
//
// Don't inherit from TestPartResult as its destructor is not virtual.
class GTEST_API_ TestPartResult {
 public:
  // The possible outcomes of a test part (i.e. an assertion or an
  // explicit SUCCEED(), FAIL(), or ADD_FAILURE()).
  enum Type {
    kSuccess,          // Succeeded.
    kNonFatalFailure,  // Failed but the test can continue.
    kFatalFailure,     // Failed and the test should be terminated.
    kSkip              // Skipped.
  };

  // C'tor.  TestPartResult does NOT have a default constructor.
  // Always use this constructor (with parameters) to create a
  // TestPartResult object.
  TestPartResult(Type a_type, const char* a_file_name, int a_line_number,
                 const char* a_message)
      : type_(a_type),
        file_name_(a_file_name == nullptr ? "" : a_file_name),
        line_number_(a_line_number),
        summary_(ExtractSummary(a_message)),
        message_(a_message) {}

  // Gets the outcome of the test part.
  Type type() const { return type_; }

  // Gets the name of the source file where the test part took place, or
  // NULL if it's unknown.
  const char* file_name() const {
    return file_name_.empty() ? nullptr : file_name_.c_str();
  }

  // Gets the line in the source file where the test part took place,
  // or -1 if it's unknown.
  int line_number() const { return line_number_; }

  // Gets the summary of the failure message.
  const char* summary() const { return summary_.c_str(); }

  // Gets the message associated with the test part.
  const char* message() const { return message_.c_str(); }

  // Returns true iff the test part was skipped.
  bool skipped() const { return type_ == kSkip; }

  // Returns true iff the test part passed.
  bool passed() const { return type_ == kSuccess; }

  // Returns true iff the test part non-fatally failed.
  bool nonfatally_failed() const { return type_ == kNonFatalFailure; }

  // Returns true iff the test part fatally failed.
  bool fatally_failed() const { return type_ == kFatalFailure; }

  // Returns true iff the test part failed.
  bool failed() const { return fatally_failed() || nonfatally_failed(); }

 private:
  Type type_;

  // Gets the summary of the failure message by omitting the stack
  // trace in it.
  static std::string ExtractSummary(const char* message);

  // The name of the source file where the test part took place, or
  // "" if the source file is unknown.
  std::string file_name_;
  // The line in the source file where the test part took place, or -1
  // if the line number is unknown.
  int line_number_;
  std::string summary_;  // The test failure summary.
  std::string message_;  // The test failure message.
};

// Prints a TestPartResult object.
std::ostream& operator<<(std::ostream& os, const TestPartResult& result);

// An array of TestPartResult objects.
//
// Don't inherit from TestPartResultArray as its destructor is not
// virtual.
class GTEST_API_ TestPartResultArray {
 public:
  TestPartResultArray() {}

  // Appends the given TestPartResult to the array.
  void Append(const TestPartResult& result);

  // Returns the TestPartResult at the given index (0-based).
  const TestPartResult& GetTestPartResult(int index) const;

  // Returns the number of TestPartResult objects in the array.
  int size() const;

 private:
  std::vector<TestPartResult> array_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestPartResultArray);
};

// This interface knows how to report a test part result.
class GTEST_API_ TestPartResultReporterInterface {
 public:
  virtual ~TestPartResultReporterInterface() {}

  virtual void ReportTestPartResult(const TestPartResult& result) = 0;
};

namespace internal {

// This helper class is used by {ASSERT|EXPECT}_NO_FATAL_FAILURE to check if a
// statement generates new fatal failures. To do so it registers itself as the
// current test part result reporter. Besides checking if fatal failures were
// reported, it only delegates the reporting to the former result reporter.
// The original result reporter is restored in the destructor.
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
class GTEST_API_ HasNewFatalFailureHelper
    : public TestPartResultReporterInterface {
 public:
  HasNewFatalFailureHelper();
  ~HasNewFatalFailureHelper() override;
  void ReportTestPartResult(const TestPartResult& result) override;
  bool has_new_fatal_failure() const { return has_new_fatal_failure_; }
 private:
  bool has_new_fatal_failure_;
  TestPartResultReporterInterface* original_reporter_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(HasNewFatalFailureHelper);
};

}  // namespace internal

}  // namespace testing

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

#endif  // GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
// Copyright 2008 Google Inc.
// All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
#define GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_

// This header implements typed tests and type-parameterized tests.

// Typed (aka type-driven) tests repeat the same test for types in a
// list.  You must know which types you want to test with when writing
// typed tests. Here's how you do it:

#if 0

// First, define a fixture class template.  It should be parameterized
// by a type.  Remember to derive it from testing::Test.
template <typename T>
class FooTest : public testing::Test {
 public:
  ...
  typedef std::list<T> List;
  static T shared_;
  T value_;
};

// Next, associate a list of types with the test suite, which will be
// repeated for each type in the list.  The typedef is necessary for
// the macro to parse correctly.
typedef testing::Types<char, int, unsigned int> MyTypes;
TYPED_TEST_SUITE(FooTest, MyTypes);

// If the type list contains only one type, you can write that type
// directly without Types<...>:
//   TYPED_TEST_SUITE(FooTest, int);

// Then, use TYPED_TEST() instead of TEST_F() to define as many typed
// tests for this test suite as you want.
TYPED_TEST(FooTest, DoesBlah) {
  // Inside a test, refer to TypeParam to get the type parameter.
  // Since we are inside a derived class template, C++ requires use to
  // visit the members of FooTest via 'this'.
  TypeParam n = this->value_;

  // To visit static members of the fixture, add the TestFixture::
  // prefix.
  n += TestFixture::shared_;

  // To refer to typedefs in the fixture, add the "typename
  // TestFixture::" prefix.
  typename TestFixture::List values;
  values.push_back(n);
  ...
}

TYPED_TEST(FooTest, HasPropertyA) { ... }

// TYPED_TEST_SUITE takes an optional third argument which allows to specify a
// class that generates custom test name suffixes based on the type. This should
// be a class which has a static template function GetName(int index) returning
// a string for each type. The provided integer index equals the index of the
// type in the provided type list. In many cases the index can be ignored.
//
// For example:
//   class MyTypeNames {
//    public:
//     template <typename T>
//     static std::string GetName(int) {
//       if (std::is_same<T, char>()) return "char";
//       if (std::is_same<T, int>()) return "int";
//       if (std::is_same<T, unsigned int>()) return "unsignedInt";
//     }
//   };
//   TYPED_TEST_SUITE(FooTest, MyTypes, MyTypeNames);

#endif  // 0

// Type-parameterized tests are abstract test patterns parameterized
// by a type.  Compared with typed tests, type-parameterized tests
// allow you to define the test pattern without knowing what the type
// parameters are.  The defined pattern can be instantiated with
// different types any number of times, in any number of translation
// units.
//
// If you are designing an interface or concept, you can define a
// suite of type-parameterized tests to verify properties that any
// valid implementation of the interface/concept should have.  Then,
// each implementation can easily instantiate the test suite to verify
// that it conforms to the requirements, without having to write
// similar tests repeatedly.  Here's an example:

#if 0

// First, define a fixture class template.  It should be parameterized
// by a type.  Remember to derive it from testing::Test.
template <typename T>
class FooTest : public testing::Test {
  ...
};

// Next, declare that you will define a type-parameterized test suite
// (the _P suffix is for "parameterized" or "pattern", whichever you
// prefer):
TYPED_TEST_SUITE_P(FooTest);

// Then, use TYPED_TEST_P() to define as many type-parameterized tests
// for this type-parameterized test suite as you want.
TYPED_TEST_P(FooTest, DoesBlah) {
  // Inside a test, refer to TypeParam to get the type parameter.
  TypeParam n = 0;
  ...
}

TYPED_TEST_P(FooTest, HasPropertyA) { ... }

// Now the tricky part: you need to register all test patterns before
// you can instantiate them.  The first argument of the macro is the
// test suite name; the rest are the names of the tests in this test
// case.
REGISTER_TYPED_TEST_SUITE_P(FooTest,
                            DoesBlah, HasPropertyA);

// Finally, you are free to instantiate the pattern with the types you
// want.  If you put the above code in a header file, you can #include
// it in multiple C++ source files and instantiate it multiple times.
//
// To distinguish different instances of the pattern, the first
// argument to the INSTANTIATE_* macro is a prefix that will be added
// to the actual test suite name.  Remember to pick unique prefixes for
// different instances.
typedef testing::Types<char, int, unsigned int> MyTypes;
INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);

// If the type list contains only one type, you can write that type
// directly without Types<...>:
//   INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, int);
//
// Similar to the optional argument of TYPED_TEST_SUITE above,
// INSTANTIATE_TEST_SUITE_P takes an optional fourth argument which allows to
// generate custom names.
//   INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes, MyTypeNames);

#endif  // 0


// Implements typed tests.

#if GTEST_HAS_TYPED_TEST

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// Expands to the name of the typedef for the type parameters of the
// given test suite.
#define GTEST_TYPE_PARAMS_(TestSuiteName) gtest_type_params_##TestSuiteName##_

// Expands to the name of the typedef for the NameGenerator, responsible for
// creating the suffixes of the name.
#define GTEST_NAME_GENERATOR_(TestSuiteName) \
  gtest_type_params_##TestSuiteName##_NameGenerator

// The 'Types' template argument below must have spaces around it
// since some compilers may choke on '>>' when passing a template
// instance (e.g. Types<int>)
#define TYPED_TEST_SUITE(CaseName, Types, ...)                           \
  typedef ::testing::internal::TypeList<Types>::type GTEST_TYPE_PARAMS_( \
      CaseName);                                                         \
  typedef ::testing::internal::NameGeneratorSelector<__VA_ARGS__>::type  \
      GTEST_NAME_GENERATOR_(CaseName)

# define TYPED_TEST(CaseName, TestName)                                       \
  template <typename gtest_TypeParam_>                                        \
  class GTEST_TEST_CLASS_NAME_(CaseName, TestName)                            \
      : public CaseName<gtest_TypeParam_> {                                   \
   private:                                                                   \
    typedef CaseName<gtest_TypeParam_> TestFixture;                           \
    typedef gtest_TypeParam_ TypeParam;                                       \
    virtual void TestBody();                                                  \
  };                                                                          \
  static bool gtest_##CaseName##_##TestName##_registered_                     \
        GTEST_ATTRIBUTE_UNUSED_ =                                             \
      ::testing::internal::TypeParameterizedTest<                             \
          CaseName,                                                           \
          ::testing::internal::TemplateSel<GTEST_TEST_CLASS_NAME_(CaseName,   \
                                                                  TestName)>, \
          GTEST_TYPE_PARAMS_(                                                 \
              CaseName)>::Register("",                                        \
                                   ::testing::internal::CodeLocation(         \
                                       __FILE__, __LINE__),                   \
                                   #CaseName, #TestName, 0,                   \
                                   ::testing::internal::GenerateNames<        \
                                       GTEST_NAME_GENERATOR_(CaseName),       \
                                       GTEST_TYPE_PARAMS_(CaseName)>());      \
  template <typename gtest_TypeParam_>                                        \
  void GTEST_TEST_CLASS_NAME_(CaseName,                                       \
                              TestName)<gtest_TypeParam_>::TestBody()

// Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
#define TYPED_TEST_CASE                                                \
  static_assert(::testing::internal::TypedTestCaseIsDeprecated(), ""); \
  TYPED_TEST_SUITE
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

#endif  // GTEST_HAS_TYPED_TEST

// Implements type-parameterized tests.

#if GTEST_HAS_TYPED_TEST_P

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// Expands to the namespace name that the type-parameterized tests for
// the given type-parameterized test suite are defined in.  The exact
// name of the namespace is subject to change without notice.
#define GTEST_SUITE_NAMESPACE_(TestSuiteName) gtest_suite_##TestSuiteName##_

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
//
// Expands to the name of the variable used to remember the names of
// the defined tests in the given test suite.
#define GTEST_TYPED_TEST_SUITE_P_STATE_(TestSuiteName) \
  gtest_typed_test_suite_p_state_##TestSuiteName##_

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE DIRECTLY.
//
// Expands to the name of the variable used to remember the names of
// the registered tests in the given test suite.
#define GTEST_REGISTERED_TEST_NAMES_(TestSuiteName) \
  gtest_registered_test_names_##TestSuiteName##_

// The variables defined in the type-parameterized test macros are
// static as typically these macros are used in a .h file that can be
// #included in multiple translation units linked together.
#define TYPED_TEST_SUITE_P(SuiteName)              \
  static ::testing::internal::TypedTestSuitePState \
      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName)

// Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
#define TYPED_TEST_CASE_P                                                 \
  static_assert(::testing::internal::TypedTestCase_P_IsDeprecated(), ""); \
  TYPED_TEST_SUITE_P
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

#define TYPED_TEST_P(SuiteName, TestName)                             \
  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                       \
    template <typename gtest_TypeParam_>                              \
    class TestName : public SuiteName<gtest_TypeParam_> {             \
     private:                                                         \
      typedef SuiteName<gtest_TypeParam_> TestFixture;                \
      typedef gtest_TypeParam_ TypeParam;                             \
      virtual void TestBody();                                        \
    };                                                                \
    static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \
        GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).AddTestName(       \
            __FILE__, __LINE__, #SuiteName, #TestName);               \
  }                                                                   \
  template <typename gtest_TypeParam_>                                \
  void GTEST_SUITE_NAMESPACE_(                                        \
      SuiteName)::TestName<gtest_TypeParam_>::TestBody()

#define REGISTER_TYPED_TEST_SUITE_P(SuiteName, ...)                            \
  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                                \
    typedef ::testing::internal::Templates<__VA_ARGS__>::type gtest_AllTests_; \
  }                                                                            \
  static const char* const GTEST_REGISTERED_TEST_NAMES_(                       \
      SuiteName) GTEST_ATTRIBUTE_UNUSED_ =                                     \
      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).VerifyRegisteredTestNames(    \
          __FILE__, __LINE__, #__VA_ARGS__)

// Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
#define REGISTER_TYPED_TEST_CASE_P                                           \
  static_assert(::testing::internal::RegisterTypedTestCase_P_IsDeprecated(), \
                "");                                                         \
  REGISTER_TYPED_TEST_SUITE_P
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

// The 'Types' template argument below must have spaces around it
// since some compilers may choke on '>>' when passing a template
// instance (e.g. Types<int>)
#define INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, SuiteName, Types, ...)       \
  static bool gtest_##Prefix##_##SuiteName GTEST_ATTRIBUTE_UNUSED_ =        \
      ::testing::internal::TypeParameterizedTestSuite<                      \
          SuiteName, GTEST_SUITE_NAMESPACE_(SuiteName)::gtest_AllTests_,    \
          ::testing::internal::TypeList<Types>::type>::                     \
          Register(#Prefix,                                                 \
                   ::testing::internal::CodeLocation(__FILE__, __LINE__),   \
                   &GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName), #SuiteName, \
                   GTEST_REGISTERED_TEST_NAMES_(SuiteName),                 \
                   ::testing::internal::GenerateNames<                      \
                       ::testing::internal::NameGeneratorSelector<          \
                           __VA_ARGS__>::type,                              \
                       ::testing::internal::TypeList<Types>::type>())

// Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
#define INSTANTIATE_TYPED_TEST_CASE_P                                      \
  static_assert(                                                           \
      ::testing::internal::InstantiateTypedTestCase_P_IsDeprecated(), ""); \
  INSTANTIATE_TYPED_TEST_SUITE_P
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

#endif  // GTEST_HAS_TYPED_TEST_P

#endif  // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

namespace testing {

// Silence C4100 (unreferenced formal parameter) and 4805
// unsafe mix of type 'const int' and type 'const bool'
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4805)
# pragma warning(disable:4100)
#endif


// Declares the flags.

// This flag temporary enables the disabled tests.
GTEST_DECLARE_bool_(also_run_disabled_tests);

// This flag brings the debugger on an assertion failure.
GTEST_DECLARE_bool_(break_on_failure);

// This flag controls whether Google Test catches all test-thrown exceptions
// and logs them as failures.
GTEST_DECLARE_bool_(catch_exceptions);

// This flag enables using colors in terminal output. Available values are
// "yes" to enable colors, "no" (disable colors), or "auto" (the default)
// to let Google Test decide.
GTEST_DECLARE_string_(color);

// This flag sets up the filter to select by name using a glob pattern
// the tests to run. If the filter is not given all tests are executed.
GTEST_DECLARE_string_(filter);

// This flag controls whether Google Test installs a signal handler that dumps
// debugging information when fatal signals are raised.
GTEST_DECLARE_bool_(install_failure_signal_handler);

// This flag causes the Google Test to list tests. None of the tests listed
// are actually run if the flag is provided.
GTEST_DECLARE_bool_(list_tests);

// This flag controls whether Google Test emits a detailed XML report to a file
// in addition to its normal textual output.
GTEST_DECLARE_string_(output);

// This flags control whether Google Test prints the elapsed time for each
// test.
GTEST_DECLARE_bool_(print_time);

// This flags control whether Google Test prints UTF8 characters as text.
GTEST_DECLARE_bool_(print_utf8);

// This flag specifies the random number seed.
GTEST_DECLARE_int32_(random_seed);

// This flag sets how many times the tests are repeated. The default value
// is 1. If the value is -1 the tests are repeating forever.
GTEST_DECLARE_int32_(repeat);

// This flag controls whether Google Test includes Google Test internal
// stack frames in failure stack traces.
GTEST_DECLARE_bool_(show_internal_stack_frames);

// When this flag is specified, tests' order is randomized on every iteration.
GTEST_DECLARE_bool_(shuffle);

// This flag specifies the maximum number of stack frames to be
// printed in a failure message.
GTEST_DECLARE_int32_(stack_trace_depth);

// When this flag is specified, a failed assertion will throw an
// exception if exceptions are enabled, or exit the program with a
// non-zero code otherwise. For use with an external test framework.
GTEST_DECLARE_bool_(throw_on_failure);

// When this flag is set with a "host:port" string, on supported
// platforms test results are streamed to the specified port on
// the specified host machine.
GTEST_DECLARE_string_(stream_result_to);

#if GTEST_USE_OWN_FLAGFILE_FLAG_
GTEST_DECLARE_string_(flagfile);
#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_

// The upper limit for valid stack trace depths.
const int kMaxStackTraceDepth = 100;

namespace internal {

class AssertHelper;
class DefaultGlobalTestPartResultReporter;
class ExecDeathTest;
class NoExecDeathTest;
class FinalSuccessChecker;
class GTestFlagSaver;
class StreamingListenerTest;
class TestResultAccessor;
class TestEventListenersAccessor;
class TestEventRepeater;
class UnitTestRecordPropertyTestHelper;
class WindowsDeathTest;
class FuchsiaDeathTest;
class UnitTestImpl* GetUnitTestImpl();
void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                    const std::string& message);

}  // namespace internal

// The friend relationship of some of these classes is cyclic.
// If we don't forward declare them the compiler might confuse the classes
// in friendship clauses with same named classes on the scope.
class Test;
class TestSuite;

// Old API is still available but deprecated
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
using TestCase = TestSuite;
#endif
class TestInfo;
class UnitTest;

// A class for indicating whether an assertion was successful.  When
// the assertion wasn't successful, the AssertionResult object
// remembers a non-empty message that describes how it failed.
//
// To create an instance of this class, use one of the factory functions
// (AssertionSuccess() and AssertionFailure()).
//
// This class is useful for two purposes:
//   1. Defining predicate functions to be used with Boolean test assertions
//      EXPECT_TRUE/EXPECT_FALSE and their ASSERT_ counterparts
//   2. Defining predicate-format functions to be
//      used with predicate assertions (ASSERT_PRED_FORMAT*, etc).
//
// For example, if you define IsEven predicate:
//
//   testing::AssertionResult IsEven(int n) {
//     if ((n % 2) == 0)
//       return testing::AssertionSuccess();
//     else
//       return testing::AssertionFailure() << n << " is odd";
//   }
//
// Then the failed expectation EXPECT_TRUE(IsEven(Fib(5)))
// will print the message
//
//   Value of: IsEven(Fib(5))
//     Actual: false (5 is odd)
//   Expected: true
//
// instead of a more opaque
//
//   Value of: IsEven(Fib(5))
//     Actual: false
//   Expected: true
//
// in case IsEven is a simple Boolean predicate.
//
// If you expect your predicate to be reused and want to support informative
// messages in EXPECT_FALSE and ASSERT_FALSE (negative assertions show up
// about half as often as positive ones in our tests), supply messages for
// both success and failure cases:
//
//   testing::AssertionResult IsEven(int n) {
//     if ((n % 2) == 0)
//       return testing::AssertionSuccess() << n << " is even";
//     else
//       return testing::AssertionFailure() << n << " is odd";
//   }
//
// Then a statement EXPECT_FALSE(IsEven(Fib(6))) will print
//
//   Value of: IsEven(Fib(6))
//     Actual: true (8 is even)
//   Expected: false
//
// NB: Predicates that support negative Boolean assertions have reduced
// performance in positive ones so be careful not to use them in tests
// that have lots (tens of thousands) of positive Boolean assertions.
//
// To use this class with EXPECT_PRED_FORMAT assertions such as:
//
//   // Verifies that Foo() returns an even number.
//   EXPECT_PRED_FORMAT1(IsEven, Foo());
//
// you need to define:
//
//   testing::AssertionResult IsEven(const char* expr, int n) {
//     if ((n % 2) == 0)
//       return testing::AssertionSuccess();
//     else
//       return testing::AssertionFailure()
//         << "Expected: " << expr << " is even\n  Actual: it's " << n;
//   }
//
// If Foo() returns 5, you will see the following message:
//
//   Expected: Foo() is even
//     Actual: it's 5
//
class GTEST_API_ AssertionResult {
 public:
  // Copy constructor.
  // Used in EXPECT_TRUE/FALSE(assertion_result).
  AssertionResult(const AssertionResult& other);

#if defined(_MSC_VER) && _MSC_VER < 1910
  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 /* forcing value to bool */)
#endif

  // Used in the EXPECT_TRUE/FALSE(bool_expression).
  //
  // T must be contextually convertible to bool.
  //
  // The second parameter prevents this overload from being considered if
  // the argument is implicitly convertible to AssertionResult. In that case
  // we want AssertionResult's copy constructor to be used.
  template <typename T>
  explicit AssertionResult(
      const T& success,
      typename internal::EnableIf<
          !std::is_convertible<T, AssertionResult>::value>::type*
      /*enabler*/
      = nullptr)
      : success_(success) {}

#if defined(_MSC_VER) && _MSC_VER < 1910
  GTEST_DISABLE_MSC_WARNINGS_POP_()
#endif

  // Assignment operator.
  AssertionResult& operator=(AssertionResult other) {
    swap(other);
    return *this;
  }

  // Returns true iff the assertion succeeded.
  operator bool() const { return success_; }  // NOLINT

  // Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
  AssertionResult operator!() const;

  // Returns the text streamed into this AssertionResult. Test assertions
  // use it when they fail (i.e., the predicate's outcome doesn't match the
  // assertion's expectation). When nothing has been streamed into the
  // object, returns an empty string.
  const char* message() const {
    return message_.get() != nullptr ? message_->c_str() : "";
  }
  // Deprecated; please use message() instead.
  const char* failure_message() const { return message(); }

  // Streams a custom failure message into this object.
  template <typename T> AssertionResult& operator<<(const T& value) {
    AppendMessage(Message() << value);
    return *this;
  }

  // Allows streaming basic output manipulators such as endl or flush into
  // this object.
  AssertionResult& operator<<(
      ::std::ostream& (*basic_manipulator)(::std::ostream& stream)) {
    AppendMessage(Message() << basic_manipulator);
    return *this;
  }

 private:
  // Appends the contents of message to message_.
  void AppendMessage(const Message& a_message) {
    if (message_.get() == nullptr) message_.reset(new ::std::string);
    message_->append(a_message.GetString().c_str());
  }

  // Swap the contents of this AssertionResult with other.
  void swap(AssertionResult& other);

  // Stores result of the assertion predicate.
  bool success_;
  // Stores the message describing the condition in case the expectation
  // construct is not satisfied with the predicate's outcome.
  // Referenced via a pointer to avoid taking too much stack frame space
  // with test assertions.
  std::unique_ptr< ::std::string> message_;
};

// Makes a successful assertion result.
GTEST_API_ AssertionResult AssertionSuccess();

// Makes a failed assertion result.
GTEST_API_ AssertionResult AssertionFailure();

// Makes a failed assertion result with the given failure message.
// Deprecated; use AssertionFailure() << msg.
GTEST_API_ AssertionResult AssertionFailure(const Message& msg);

}  // namespace testing

// Includes the auto-generated header that implements a family of generic
// predicate assertion macros. This include comes late because it relies on
// APIs declared above.
// Copyright 2006, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// This file is AUTOMATICALLY GENERATED on 01/02/2019 by command
// 'gen_gtest_pred_impl.py 5'.  DO NOT EDIT BY HAND!
//
// Implements a family of generic predicate assertion macros.
// GOOGLETEST_CM0001 DO NOT DELETE

#ifndef GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
#define GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_


namespace testing {

// This header implements a family of generic predicate assertion
// macros:
//
//   ASSERT_PRED_FORMAT1(pred_format, v1)
//   ASSERT_PRED_FORMAT2(pred_format, v1, v2)
//   ...
//
// where pred_format is a function or functor that takes n (in the
// case of ASSERT_PRED_FORMATn) values and their source expression
// text, and returns a testing::AssertionResult.  See the definition
// of ASSERT_EQ in gtest.h for an example.
//
// If you don't care about formatting, you can use the more
// restrictive version:
//
//   ASSERT_PRED1(pred, v1)
//   ASSERT_PRED2(pred, v1, v2)
//   ...
//
// where pred is an n-ary function or functor that returns bool,
// and the values v1, v2, ..., must support the << operator for
// streaming to std::ostream.
//
// We also define the EXPECT_* variations.
//
// For now we only support predicates whose arity is at most 5.
// Please email googletestframework@googlegroups.com if you need
// support for higher arities.

// GTEST_ASSERT_ is the basic statement to which all of the assertions
// in this file reduce.  Don't use this in your code.

#define GTEST_ASSERT_(expression, on_failure) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (const ::testing::AssertionResult gtest_ar = (expression)) \
    ; \
  else \
    on_failure(gtest_ar.failure_message())


// Helper function for implementing {EXPECT|ASSERT}_PRED1.  Don't use
// this in your code.
template <typename Pred,
          typename T1>
AssertionResult AssertPred1Helper(const char* pred_text,
                                  const char* e1,
                                  Pred pred,
                                  const T1& v1) {
  if (pred(v1)) return AssertionSuccess();

  return AssertionFailure()
         << pred_text << "(" << e1 << ") evaluates to false, where"
         << "\n"
         << e1 << " evaluates to " << ::testing::PrintToString(v1);
}

// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT1.
// Don't use this in your code.
#define GTEST_PRED_FORMAT1_(pred_format, v1, on_failure)\
  GTEST_ASSERT_(pred_format(#v1, v1), \
                on_failure)

// Internal macro for implementing {EXPECT|ASSERT}_PRED1.  Don't use
// this in your code.
#define GTEST_PRED1_(pred, v1, on_failure)\
  GTEST_ASSERT_(::testing::AssertPred1Helper(#pred, \
                                             #v1, \
                                             pred, \
                                             v1), on_failure)

// Unary predicate assertion macros.
#define EXPECT_PRED_FORMAT1(pred_format, v1) \
  GTEST_PRED_FORMAT1_(pred_format, v1, GTEST_NONFATAL_FAILURE_)
#define EXPECT_PRED1(pred, v1) \
  GTEST_PRED1_(pred, v1, GTEST_NONFATAL_FAILURE_)
#define ASSERT_PRED_FORMAT1(pred_format, v1) \
  GTEST_PRED_FORMAT1_(pred_format, v1, GTEST_FATAL_FAILURE_)
#define ASSERT_PRED1(pred, v1) \
  GTEST_PRED1_(pred, v1, GTEST_FATAL_FAILURE_)



// Helper function for implementing {EXPECT|ASSERT}_PRED2.  Don't use
// this in your code.
template <typename Pred,
          typename T1,
          typename T2>
AssertionResult AssertPred2Helper(const char* pred_text,
                                  const char* e1,
                                  const char* e2,
                                  Pred pred,
                                  const T1& v1,
                                  const T2& v2) {
  if (pred(v1, v2)) return AssertionSuccess();

  return AssertionFailure()
         << pred_text << "(" << e1 << ", " << e2
         << ") evaluates to false, where"
         << "\n"
         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
         << e2 << " evaluates to " << ::testing::PrintToString(v2);
}

// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT2.
// Don't use this in your code.
#define GTEST_PRED_FORMAT2_(pred_format, v1, v2, on_failure)\
  GTEST_ASSERT_(pred_format(#v1, #v2, v1, v2), \
                on_failure)

// Internal macro for implementing {EXPECT|ASSERT}_PRED2.  Don't use
// this in your code.
#define GTEST_PRED2_(pred, v1, v2, on_failure)\
  GTEST_ASSERT_(::testing::AssertPred2Helper(#pred, \
                                             #v1, \
                                             #v2, \
                                             pred, \
                                             v1, \
                                             v2), on_failure)

// Binary predicate assertion macros.
#define EXPECT_PRED_FORMAT2(pred_format, v1, v2) \
  GTEST_PRED_FORMAT2_(pred_format, v1, v2, GTEST_NONFATAL_FAILURE_)
#define EXPECT_PRED2(pred, v1, v2) \
  GTEST_PRED2_(pred, v1, v2, GTEST_NONFATAL_FAILURE_)
#define ASSERT_PRED_FORMAT2(pred_format, v1, v2) \
  GTEST_PRED_FORMAT2_(pred_format, v1, v2, GTEST_FATAL_FAILURE_)
#define ASSERT_PRED2(pred, v1, v2) \
  GTEST_PRED2_(pred, v1, v2, GTEST_FATAL_FAILURE_)



// Helper function for implementing {EXPECT|ASSERT}_PRED3.  Don't use
// this in your code.
template <typename Pred,
          typename T1,
          typename T2,
          typename T3>
AssertionResult AssertPred3Helper(const char* pred_text,
                                  const char* e1,
                                  const char* e2,
                                  const char* e3,
                                  Pred pred,
                                  const T1& v1,
                                  const T2& v2,
                                  const T3& v3) {
  if (pred(v1, v2, v3)) return AssertionSuccess();

  return AssertionFailure()
         << pred_text << "(" << e1 << ", " << e2 << ", " << e3
         << ") evaluates to false, where"
         << "\n"
         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
         << e3 << " evaluates to " << ::testing::PrintToString(v3);
}

// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT3.
// Don't use this in your code.
#define GTEST_PRED_FORMAT3_(pred_format, v1, v2, v3, on_failure)\
  GTEST_ASSERT_(pred_format(#v1, #v2, #v3, v1, v2, v3), \
                on_failure)

// Internal macro for implementing {EXPECT|ASSERT}_PRED3.  Don't use
// this in your code.
#define GTEST_PRED3_(pred, v1, v2, v3, on_failure)\
  GTEST_ASSERT_(::testing::AssertPred3Helper(#pred, \
                                             #v1, \
                                             #v2, \
                                             #v3, \
                                             pred, \
                                             v1, \
                                             v2, \
                                             v3), on_failure)

// Ternary predicate assertion macros.
#define EXPECT_PRED_FORMAT3(pred_format, v1, v2, v3) \
  GTEST_PRED_FORMAT3_(pred_format, v1, v2, v3, GTEST_NONFATAL_FAILURE_)
#define EXPECT_PRED3(pred, v1, v2, v3) \
  GTEST_PRED3_(pred, v1, v2, v3, GTEST_NONFATAL_FAILURE_)
#define ASSERT_PRED_FORMAT3(pred_format, v1, v2, v3) \
  GTEST_PRED_FORMAT3_(pred_format, v1, v2, v3, GTEST_FATAL_FAILURE_)
#define ASSERT_PRED3(pred, v1, v2, v3) \
  GTEST_PRED3_(pred, v1, v2, v3, GTEST_FATAL_FAILURE_)



// Helper function for implementing {EXPECT|ASSERT}_PRED4.  Don't use
// this in your code.
template <typename Pred,
          typename T1,
          typename T2,
          typename T3,
          typename T4>
AssertionResult AssertPred4Helper(const char* pred_text,
                                  const char* e1,
                                  const char* e2,
                                  const char* e3,
                                  const char* e4,
                                  Pred pred,
                                  const T1& v1,
                                  const T2& v2,
                                  const T3& v3,
                                  const T4& v4) {
  if (pred(v1, v2, v3, v4)) return AssertionSuccess();

  return AssertionFailure()
         << pred_text << "(" << e1 << ", " << e2 << ", " << e3 << ", " << e4
         << ") evaluates to false, where"
         << "\n"
         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
         << e3 << " evaluates to " << ::testing::PrintToString(v3) << "\n"
         << e4 << " evaluates to " << ::testing::PrintToString(v4);
}

// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT4.
// Don't use this in your code.
#define GTEST_PRED_FORMAT4_(pred_format, v1, v2, v3, v4, on_failure)\
  GTEST_ASSERT_(pred_format(#v1, #v2, #v3, #v4, v1, v2, v3, v4), \
                on_failure)

// Internal macro for implementing {EXPECT|ASSERT}_PRED4.  Don't use
// this in your code.
#define GTEST_PRED4_(pred, v1, v2, v3, v4, on_failure)\
  GTEST_ASSERT_(::testing::AssertPred4Helper(#pred, \
                                             #v1, \
                                             #v2, \
                                             #v3, \
                                             #v4, \
                                             pred, \
                                             v1, \
                                             v2, \
                                             v3, \
                                             v4), on_failure)

// 4-ary predicate assertion macros.
#define EXPECT_PRED_FORMAT4(pred_format, v1, v2, v3, v4) \
  GTEST_PRED_FORMAT4_(pred_format, v1, v2, v3, v4, GTEST_NONFATAL_FAILURE_)
#define EXPECT_PRED4(pred, v1, v2, v3, v4) \
  GTEST_PRED4_(pred, v1, v2, v3, v4, GTEST_NONFATAL_FAILURE_)
#define ASSERT_PRED_FORMAT4(pred_format, v1, v2, v3, v4) \
  GTEST_PRED_FORMAT4_(pred_format, v1, v2, v3, v4, GTEST_FATAL_FAILURE_)
#define ASSERT_PRED4(pred, v1, v2, v3, v4) \
  GTEST_PRED4_(pred, v1, v2, v3, v4, GTEST_FATAL_FAILURE_)



// Helper function for implementing {EXPECT|ASSERT}_PRED5.  Don't use
// this in your code.
template <typename Pred,
          typename T1,
          typename T2,
          typename T3,
          typename T4,
          typename T5>
AssertionResult AssertPred5Helper(const char* pred_text,
                                  const char* e1,
                                  const char* e2,
                                  const char* e3,
                                  const char* e4,
                                  const char* e5,
                                  Pred pred,
                                  const T1& v1,
                                  const T2& v2,
                                  const T3& v3,
                                  const T4& v4,
                                  const T5& v5) {
  if (pred(v1, v2, v3, v4, v5)) return AssertionSuccess();

  return AssertionFailure()
         << pred_text << "(" << e1 << ", " << e2 << ", " << e3 << ", " << e4
         << ", " << e5 << ") evaluates to false, where"
         << "\n"
         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
         << e3 << " evaluates to " << ::testing::PrintToString(v3) << "\n"
         << e4 << " evaluates to " << ::testing::PrintToString(v4) << "\n"
         << e5 << " evaluates to " << ::testing::PrintToString(v5);
}

// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT5.
// Don't use this in your code.
#define GTEST_PRED_FORMAT5_(pred_format, v1, v2, v3, v4, v5, on_failure)\
  GTEST_ASSERT_(pred_format(#v1, #v2, #v3, #v4, #v5, v1, v2, v3, v4, v5), \
                on_failure)

// Internal macro for implementing {EXPECT|ASSERT}_PRED5.  Don't use
// this in your code.
#define GTEST_PRED5_(pred, v1, v2, v3, v4, v5, on_failure)\
  GTEST_ASSERT_(::testing::AssertPred5Helper(#pred, \
                                             #v1, \
                                             #v2, \
                                             #v3, \
                                             #v4, \
                                             #v5, \
                                             pred, \
                                             v1, \
                                             v2, \
                                             v3, \
                                             v4, \
                                             v5), on_failure)

// 5-ary predicate assertion macros.
#define EXPECT_PRED_FORMAT5(pred_format, v1, v2, v3, v4, v5) \
  GTEST_PRED_FORMAT5_(pred_format, v1, v2, v3, v4, v5, GTEST_NONFATAL_FAILURE_)
#define EXPECT_PRED5(pred, v1, v2, v3, v4, v5) \
  GTEST_PRED5_(pred, v1, v2, v3, v4, v5, GTEST_NONFATAL_FAILURE_)
#define ASSERT_PRED_FORMAT5(pred_format, v1, v2, v3, v4, v5) \
  GTEST_PRED_FORMAT5_(pred_format, v1, v2, v3, v4, v5, GTEST_FATAL_FAILURE_)
#define ASSERT_PRED5(pred, v1, v2, v3, v4, v5) \
  GTEST_PRED5_(pred, v1, v2, v3, v4, v5, GTEST_FATAL_FAILURE_)



}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_

namespace testing {

// The abstract class that all tests inherit from.
//
// In Google Test, a unit test program contains one or many TestSuites, and
// each TestSuite contains one or many Tests.
//
// When you define a test using the TEST macro, you don't need to
// explicitly derive from Test - the TEST macro automatically does
// this for you.
//
// The only time you derive from Test is when defining a test fixture
// to be used in a TEST_F.  For example:
//
//   class FooTest : public testing::Test {
//    protected:
//     void SetUp() override { ... }
//     void TearDown() override { ... }
//     ...
//   };
//
//   TEST_F(FooTest, Bar) { ... }
//   TEST_F(FooTest, Baz) { ... }
//
// Test is not copyable.
class GTEST_API_ Test {
 public:
  friend class TestInfo;

  // The d'tor is virtual as we intend to inherit from Test.
  virtual ~Test();

  // Sets up the stuff shared by all tests in this test case.
  //
  // Google Test will call Foo::SetUpTestSuite() before running the first
  // test in test case Foo.  Hence a sub-class can define its own
  // SetUpTestSuite() method to shadow the one defined in the super
  // class.
  static void SetUpTestSuite() {}

  // Tears down the stuff shared by all tests in this test case.
  //
  // Google Test will call Foo::TearDownTestSuite() after running the last
  // test in test case Foo.  Hence a sub-class can define its own
  // TearDownTestSuite() method to shadow the one defined in the super
  // class.
  static void TearDownTestSuite() {}

  // Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  static void TearDownTestCase() {}
  static void SetUpTestCase() {}
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  // Returns true iff the current test has a fatal failure.
  static bool HasFatalFailure();

  // Returns true iff the current test has a non-fatal failure.
  static bool HasNonfatalFailure();

  // Returns true iff the current test was skipped.
  static bool IsSkipped();

  // Returns true iff the current test has a (either fatal or
  // non-fatal) failure.
  static bool HasFailure() { return HasFatalFailure() || HasNonfatalFailure(); }

  // Logs a property for the current test, test suite, or for the entire
  // invocation of the test program when used outside of the context of a
  // test suite.  Only the last value for a given key is remembered.  These
  // are public static so they can be called from utility functions that are
  // not members of the test fixture.  Calls to RecordProperty made during
  // lifespan of the test (from the moment its constructor starts to the
  // moment its destructor finishes) will be output in XML as attributes of
  // the <testcase> element.  Properties recorded from fixture's
  // SetUpTestSuite or TearDownTestSuite are logged as attributes of the
  // corresponding <testsuite> element.  Calls to RecordProperty made in the
  // global context (before or after invocation of RUN_ALL_TESTS and from
  // SetUp/TearDown method of Environment objects registered with Google
  // Test) will be output as attributes of the <testsuites> element.
  static void RecordProperty(const std::string& key, const std::string& value);
  static void RecordProperty(const std::string& key, int value);

 protected:
  // Creates a Test object.
  Test();

  // Sets up the test fixture.
  virtual void SetUp();

  // Tears down the test fixture.
  virtual void TearDown();

 private:
  // Returns true iff the current test has the same fixture class as
  // the first test in the current test suite.
  static bool HasSameFixtureClass();

  // Runs the test after the test fixture has been set up.
  //
  // A sub-class must implement this to define the test logic.
  //
  // DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM.
  // Instead, use the TEST or TEST_F macro.
  virtual void TestBody() = 0;

  // Sets up, executes, and tears down the test.
  void Run();

  // Deletes self.  We deliberately pick an unusual name for this
  // internal method to avoid clashing with names used in user TESTs.
  void DeleteSelf_() { delete this; }

  const std::unique_ptr<GTEST_FLAG_SAVER_> gtest_flag_saver_;

  // Often a user misspells SetUp() as Setup() and spends a long time
  // wondering why it is never called by Google Test.  The declaration of
  // the following method is solely for catching such an error at
  // compile time:
  //
  //   - The return type is deliberately chosen to be not void, so it
  //   will be a conflict if void Setup() is declared in the user's
  //   test fixture.
  //
  //   - This method is private, so it will be another compiler error
  //   if the method is called from the user's test fixture.
  //
  // DO NOT OVERRIDE THIS FUNCTION.
  //
  // If you see an error about overriding the following function or
  // about it being private, you have mis-spelled SetUp() as Setup().
  struct Setup_should_be_spelled_SetUp {};
  virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }

  // We disallow copying Tests.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(Test);
};

typedef internal::TimeInMillis TimeInMillis;

// A copyable object representing a user specified test property which can be
// output as a key/value string pair.
//
// Don't inherit from TestProperty as its destructor is not virtual.
class TestProperty {
 public:
  // C'tor.  TestProperty does NOT have a default constructor.
  // Always use this constructor (with parameters) to create a
  // TestProperty object.
  TestProperty(const std::string& a_key, const std::string& a_value) :
    key_(a_key), value_(a_value) {
  }

  // Gets the user supplied key.
  const char* key() const {
    return key_.c_str();
  }

  // Gets the user supplied value.
  const char* value() const {
    return value_.c_str();
  }

  // Sets a new value, overriding the one supplied in the constructor.
  void SetValue(const std::string& new_value) {
    value_ = new_value;
  }

 private:
  // The key supplied by the user.
  std::string key_;
  // The value supplied by the user.
  std::string value_;
};

// The result of a single Test.  This includes a list of
// TestPartResults, a list of TestProperties, a count of how many
// death tests there are in the Test, and how much time it took to run
// the Test.
//
// TestResult is not copyable.
class GTEST_API_ TestResult {
 public:
  // Creates an empty TestResult.
  TestResult();

  // D'tor.  Do not inherit from TestResult.
  ~TestResult();

  // Gets the number of all test parts.  This is the sum of the number
  // of successful test parts and the number of failed test parts.
  int total_part_count() const;

  // Returns the number of the test properties.
  int test_property_count() const;

  // Returns true iff the test passed (i.e. no test part failed).
  bool Passed() const { return !Skipped() && !Failed(); }

  // Returns true iff the test was skipped.
  bool Skipped() const;

  // Returns true iff the test failed.
  bool Failed() const;

  // Returns true iff the test fatally failed.
  bool HasFatalFailure() const;

  // Returns true iff the test has a non-fatal failure.
  bool HasNonfatalFailure() const;

  // Returns the elapsed time, in milliseconds.
  TimeInMillis elapsed_time() const { return elapsed_time_; }

  // Returns the i-th test part result among all the results. i can range from 0
  // to total_part_count() - 1. If i is not in that range, aborts the program.
  const TestPartResult& GetTestPartResult(int i) const;

  // Returns the i-th test property. i can range from 0 to
  // test_property_count() - 1. If i is not in that range, aborts the
  // program.
  const TestProperty& GetTestProperty(int i) const;

 private:
  friend class TestInfo;
  friend class TestSuite;
  friend class UnitTest;
  friend class internal::DefaultGlobalTestPartResultReporter;
  friend class internal::ExecDeathTest;
  friend class internal::TestResultAccessor;
  friend class internal::UnitTestImpl;
  friend class internal::WindowsDeathTest;
  friend class internal::FuchsiaDeathTest;

  // Gets the vector of TestPartResults.
  const std::vector<TestPartResult>& test_part_results() const {
    return test_part_results_;
  }

  // Gets the vector of TestProperties.
  const std::vector<TestProperty>& test_properties() const {
    return test_properties_;
  }

  // Sets the elapsed time.
  void set_elapsed_time(TimeInMillis elapsed) { elapsed_time_ = elapsed; }

  // Adds a test property to the list. The property is validated and may add
  // a non-fatal failure if invalid (e.g., if it conflicts with reserved
  // key names). If a property is already recorded for the same key, the
  // value will be updated, rather than storing multiple values for the same
  // key.  xml_element specifies the element for which the property is being
  // recorded and is used for validation.
  void RecordProperty(const std::string& xml_element,
                      const TestProperty& test_property);

  // Adds a failure if the key is a reserved attribute of Google Test
  // testsuite tags.  Returns true if the property is valid.
  // FIXME: Validate attribute names are legal and human readable.
  static bool ValidateTestProperty(const std::string& xml_element,
                                   const TestProperty& test_property);

  // Adds a test part result to the list.
  void AddTestPartResult(const TestPartResult& test_part_result);

  // Returns the death test count.
  int death_test_count() const { return death_test_count_; }

  // Increments the death test count, returning the new count.
  int increment_death_test_count() { return ++death_test_count_; }

  // Clears the test part results.
  void ClearTestPartResults();

  // Clears the object.
  void Clear();

  // Protects mutable state of the property vector and of owned
  // properties, whose values may be updated.
  internal::Mutex test_properites_mutex_;

  // The vector of TestPartResults
  std::vector<TestPartResult> test_part_results_;
  // The vector of TestProperties
  std::vector<TestProperty> test_properties_;
  // Running count of death tests.
  int death_test_count_;
  // The elapsed time, in milliseconds.
  TimeInMillis elapsed_time_;

  // We disallow copying TestResult.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestResult);
};  // class TestResult

// A TestInfo object stores the following information about a test:
//
//   Test suite name
//   Test name
//   Whether the test should be run
//   A function pointer that creates the test object when invoked
//   Test result
//
// The constructor of TestInfo registers itself with the UnitTest
// singleton such that the RUN_ALL_TESTS() macro knows which tests to
// run.
class GTEST_API_ TestInfo {
 public:
  // Destructs a TestInfo object.  This function is not virtual, so
  // don't inherit from TestInfo.
  ~TestInfo();

  // Returns the test suite name.
  const char* test_suite_name() const { return test_suite_name_.c_str(); }

// Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  const char* test_case_name() const { return test_suite_name(); }
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  // Returns the test name.
  const char* name() const { return name_.c_str(); }

  // Returns the name of the parameter type, or NULL if this is not a typed
  // or a type-parameterized test.
  const char* type_param() const {
    if (type_param_.get() != nullptr) return type_param_->c_str();
    return nullptr;
  }

  // Returns the text representation of the value parameter, or NULL if this
  // is not a value-parameterized test.
  const char* value_param() const {
    if (value_param_.get() != nullptr) return value_param_->c_str();
    return nullptr;
  }

  // Returns the file name where this test is defined.
  const char* file() const { return location_.file.c_str(); }

  // Returns the line where this test is defined.
  int line() const { return location_.line; }

  // Return true if this test should not be run because it's in another shard.
  bool is_in_another_shard() const { return is_in_another_shard_; }

  // Returns true if this test should run, that is if the test is not
  // disabled (or it is disabled but the also_run_disabled_tests flag has
  // been specified) and its full name matches the user-specified filter.
  //
  // Google Test allows the user to filter the tests by their full names.
  // The full name of a test Bar in test suite Foo is defined as
  // "Foo.Bar".  Only the tests that match the filter will run.
  //
  // A filter is a colon-separated list of glob (not regex) patterns,
  // optionally followed by a '-' and a colon-separated list of
  // negative patterns (tests to exclude).  A test is run if it
  // matches one of the positive patterns and does not match any of
  // the negative patterns.
  //
  // For example, *A*:Foo.* is a filter that matches any string that
  // contains the character 'A' or starts with "Foo.".
  bool should_run() const { return should_run_; }

  // Returns true iff this test will appear in the XML report.
  bool is_reportable() const {
    // The XML report includes tests matching the filter, excluding those
    // run in other shards.
    return matches_filter_ && !is_in_another_shard_;
  }

  // Returns the result of the test.
  const TestResult* result() const { return &result_; }

 private:
#if GTEST_HAS_DEATH_TEST
  friend class internal::DefaultDeathTestFactory;
#endif  // GTEST_HAS_DEATH_TEST
  friend class Test;
  friend class TestSuite;
  friend class internal::UnitTestImpl;
  friend class internal::StreamingListenerTest;
  friend TestInfo* internal::MakeAndRegisterTestInfo(
      const char* test_suite_name, const char* name, const char* type_param,
      const char* value_param, internal::CodeLocation code_location,
      internal::TypeId fixture_class_id, internal::SetUpTestSuiteFunc set_up_tc,
      internal::TearDownTestSuiteFunc tear_down_tc,
      internal::TestFactoryBase* factory);

  // Constructs a TestInfo object. The newly constructed instance assumes
  // ownership of the factory object.
  TestInfo(const std::string& test_suite_name, const std::string& name,
           const char* a_type_param,   // NULL if not a type-parameterized test
           const char* a_value_param,  // NULL if not a value-parameterized test
           internal::CodeLocation a_code_location,
           internal::TypeId fixture_class_id,
           internal::TestFactoryBase* factory);

  // Increments the number of death tests encountered in this test so
  // far.
  int increment_death_test_count() {
    return result_.increment_death_test_count();
  }

  // Creates the test object, runs it, records its result, and then
  // deletes it.
  void Run();

  static void ClearTestResult(TestInfo* test_info) {
    test_info->result_.Clear();
  }

  // These fields are immutable properties of the test.
  const std::string test_suite_name_;    // test suite name
  const std::string name_;               // Test name
  // Name of the parameter type, or NULL if this is not a typed or a
  // type-parameterized test.
  const std::unique_ptr<const ::std::string> type_param_;
  // Text representation of the value parameter, or NULL if this is not a
  // value-parameterized test.
  const std::unique_ptr<const ::std::string> value_param_;
  internal::CodeLocation location_;
  const internal::TypeId fixture_class_id_;   // ID of the test fixture class
  bool should_run_;                 // True iff this test should run
  bool is_disabled_;                // True iff this test is disabled
  bool matches_filter_;             // True if this test matches the
                                    // user-specified filter.
  bool is_in_another_shard_;        // Will be run in another shard.
  internal::TestFactoryBase* const factory_;  // The factory that creates
                                              // the test object

  // This field is mutable and needs to be reset before running the
  // test for the second time.
  TestResult result_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestInfo);
};

// A test suite, which consists of a vector of TestInfos.
//
// TestSuite is not copyable.
class GTEST_API_ TestSuite {
 public:
  // Creates a TestSuite with the given name.
  //
  // TestSuite does NOT have a default constructor.  Always use this
  // constructor to create a TestSuite object.
  //
  // Arguments:
  //
  //   name:         name of the test suite
  //   a_type_param: the name of the test's type parameter, or NULL if
  //                 this is not a type-parameterized test.
  //   set_up_tc:    pointer to the function that sets up the test suite
  //   tear_down_tc: pointer to the function that tears down the test suite
  TestSuite(const char* name, const char* a_type_param,
            internal::SetUpTestSuiteFunc set_up_tc,
            internal::TearDownTestSuiteFunc tear_down_tc);

  // Destructor of TestSuite.
  virtual ~TestSuite();

  // Gets the name of the TestSuite.
  const char* name() const { return name_.c_str(); }

  // Returns the name of the parameter type, or NULL if this is not a
  // type-parameterized test suite.
  const char* type_param() const {
    if (type_param_.get() != nullptr) return type_param_->c_str();
    return nullptr;
  }

  // Returns true if any test in this test suite should run.
  bool should_run() const { return should_run_; }

  // Gets the number of successful tests in this test suite.
  int successful_test_count() const;

  // Gets the number of skipped tests in this test suite.
  int skipped_test_count() const;

  // Gets the number of failed tests in this test suite.
  int failed_test_count() const;

  // Gets the number of disabled tests that will be reported in the XML report.
  int reportable_disabled_test_count() const;

  // Gets the number of disabled tests in this test suite.
  int disabled_test_count() const;

  // Gets the number of tests to be printed in the XML report.
  int reportable_test_count() const;

  // Get the number of tests in this test suite that should run.
  int test_to_run_count() const;

  // Gets the number of all tests in this test suite.
  int total_test_count() const;

  // Returns true iff the test suite passed.
  bool Passed() const { return !Failed(); }

  // Returns true iff the test suite failed.
  bool Failed() const { return failed_test_count() > 0; }

  // Returns the elapsed time, in milliseconds.
  TimeInMillis elapsed_time() const { return elapsed_time_; }

  // Returns the i-th test among all the tests. i can range from 0 to
  // total_test_count() - 1. If i is not in that range, returns NULL.
  const TestInfo* GetTestInfo(int i) const;

  // Returns the TestResult that holds test properties recorded during
  // execution of SetUpTestSuite and TearDownTestSuite.
  const TestResult& ad_hoc_test_result() const { return ad_hoc_test_result_; }

 private:
  friend class Test;
  friend class internal::UnitTestImpl;

  // Gets the (mutable) vector of TestInfos in this TestSuite.
  std::vector<TestInfo*>& test_info_list() { return test_info_list_; }

  // Gets the (immutable) vector of TestInfos in this TestSuite.
  const std::vector<TestInfo*>& test_info_list() const {
    return test_info_list_;
  }

  // Returns the i-th test among all the tests. i can range from 0 to
  // total_test_count() - 1. If i is not in that range, returns NULL.
  TestInfo* GetMutableTestInfo(int i);

  // Sets the should_run member.
  void set_should_run(bool should) { should_run_ = should; }

  // Adds a TestInfo to this test suite.  Will delete the TestInfo upon
  // destruction of the TestSuite object.
  void AddTestInfo(TestInfo * test_info);

  // Clears the results of all tests in this test suite.
  void ClearResult();

  // Clears the results of all tests in the given test suite.
  static void ClearTestSuiteResult(TestSuite* test_suite) {
    test_suite->ClearResult();
  }

  // Runs every test in this TestSuite.
  void Run();

  // Runs SetUpTestSuite() for this TestSuite.  This wrapper is needed
  // for catching exceptions thrown from SetUpTestSuite().
  void RunSetUpTestSuite() {
    if (set_up_tc_ != nullptr) {
      (*set_up_tc_)();
    }
  }

  // Runs TearDownTestSuite() for this TestSuite.  This wrapper is
  // needed for catching exceptions thrown from TearDownTestSuite().
  void RunTearDownTestSuite() {
    if (tear_down_tc_ != nullptr) {
      (*tear_down_tc_)();
    }
  }

  // Returns true iff test passed.
  static bool TestPassed(const TestInfo* test_info) {
    return test_info->should_run() && test_info->result()->Passed();
  }

  // Returns true iff test skipped.
  static bool TestSkipped(const TestInfo* test_info) {
    return test_info->should_run() && test_info->result()->Skipped();
  }

  // Returns true iff test failed.
  static bool TestFailed(const TestInfo* test_info) {
    return test_info->should_run() && test_info->result()->Failed();
  }

  // Returns true iff the test is disabled and will be reported in the XML
  // report.
  static bool TestReportableDisabled(const TestInfo* test_info) {
    return test_info->is_reportable() && test_info->is_disabled_;
  }

  // Returns true iff test is disabled.
  static bool TestDisabled(const TestInfo* test_info) {
    return test_info->is_disabled_;
  }

  // Returns true iff this test will appear in the XML report.
  static bool TestReportable(const TestInfo* test_info) {
    return test_info->is_reportable();
  }

  // Returns true if the given test should run.
  static bool ShouldRunTest(const TestInfo* test_info) {
    return test_info->should_run();
  }

  // Shuffles the tests in this test suite.
  void ShuffleTests(internal::Random* random);

  // Restores the test order to before the first shuffle.
  void UnshuffleTests();

  // Name of the test suite.
  std::string name_;
  // Name of the parameter type, or NULL if this is not a typed or a
  // type-parameterized test.
  const std::unique_ptr<const ::std::string> type_param_;
  // The vector of TestInfos in their original order.  It owns the
  // elements in the vector.
  std::vector<TestInfo*> test_info_list_;
  // Provides a level of indirection for the test list to allow easy
  // shuffling and restoring the test order.  The i-th element in this
  // vector is the index of the i-th test in the shuffled test list.
  std::vector<int> test_indices_;
  // Pointer to the function that sets up the test suite.
  internal::SetUpTestSuiteFunc set_up_tc_;
  // Pointer to the function that tears down the test suite.
  internal::TearDownTestSuiteFunc tear_down_tc_;
  // True iff any test in this test suite should run.
  bool should_run_;
  // Elapsed time, in milliseconds.
  TimeInMillis elapsed_time_;
  // Holds test properties recorded during execution of SetUpTestSuite and
  // TearDownTestSuite.
  TestResult ad_hoc_test_result_;

  // We disallow copying TestSuites.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestSuite);
};

// An Environment object is capable of setting up and tearing down an
// environment.  You should subclass this to define your own
// environment(s).
//
// An Environment object does the set-up and tear-down in virtual
// methods SetUp() and TearDown() instead of the constructor and the
// destructor, as:
//
//   1. You cannot safely throw from a destructor.  This is a problem
//      as in some cases Google Test is used where exceptions are enabled, and
//      we may want to implement ASSERT_* using exceptions where they are
//      available.
//   2. You cannot use ASSERT_* directly in a constructor or
//      destructor.
class Environment {
 public:
  // The d'tor is virtual as we need to subclass Environment.
  virtual ~Environment() {}

  // Override this to define how to set up the environment.
  virtual void SetUp() {}

  // Override this to define how to tear down the environment.
  virtual void TearDown() {}
 private:
  // If you see an error about overriding the following function or
  // about it being private, you have mis-spelled SetUp() as Setup().
  struct Setup_should_be_spelled_SetUp {};
  virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
};

#if GTEST_HAS_EXCEPTIONS

// Exception which can be thrown from TestEventListener::OnTestPartResult.
class GTEST_API_ AssertionException
    : public internal::GoogleTestFailureException {
 public:
  explicit AssertionException(const TestPartResult& result)
      : GoogleTestFailureException(result) {}
};

#endif  // GTEST_HAS_EXCEPTIONS

// The interface for tracing execution of tests. The methods are organized in
// the order the corresponding events are fired.
class TestEventListener {
 public:
  virtual ~TestEventListener() {}

  // Fired before any test activity starts.
  virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;

  // Fired before each iteration of tests starts.  There may be more than
  // one iteration if GTEST_FLAG(repeat) is set. iteration is the iteration
  // index, starting from 0.
  virtual void OnTestIterationStart(const UnitTest& unit_test,
                                    int iteration) = 0;

  // Fired before environment set-up for each iteration of tests starts.
  virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test) = 0;

  // Fired after environment set-up for each iteration of tests ends.
  virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) = 0;

  // Fired before the test suite starts.
  virtual void OnTestSuiteStart(const TestSuite& /*test_suite*/) {}

  //  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  // Fired before the test starts.
  virtual void OnTestStart(const TestInfo& test_info) = 0;

  // Fired after a failed assertion or a SUCCEED() invocation.
  // If you want to throw an exception from this function to skip to the next
  // TEST, it must be AssertionException defined above, or inherited from it.
  virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0;

  // Fired after the test ends.
  virtual void OnTestEnd(const TestInfo& test_info) = 0;

  // Fired after the test suite ends.
  virtual void OnTestSuiteEnd(const TestSuite& /*test_suite*/) {}

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  // Fired before environment tear-down for each iteration of tests starts.
  virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test) = 0;

  // Fired after environment tear-down for each iteration of tests ends.
  virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) = 0;

  // Fired after each iteration of tests finishes.
  virtual void OnTestIterationEnd(const UnitTest& unit_test,
                                  int iteration) = 0;

  // Fired after all test activities have ended.
  virtual void OnTestProgramEnd(const UnitTest& unit_test) = 0;
};

// The convenience class for users who need to override just one or two
// methods and are not concerned that a possible change to a signature of
// the methods they override will not be caught during the build.  For
// comments about each method please see the definition of TestEventListener
// above.
class EmptyTestEventListener : public TestEventListener {
 public:
  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
  void OnTestIterationStart(const UnitTest& /*unit_test*/,
                            int /*iteration*/) override {}
  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {}
  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
  void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {}
//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  void OnTestCaseStart(const TestCase& /*test_case*/) override {}
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  void OnTestStart(const TestInfo& /*test_info*/) override {}
  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {}
  void OnTestEnd(const TestInfo& /*test_info*/) override {}
  void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {}
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  void OnTestCaseEnd(const TestCase& /*test_case*/) override {}
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {}
  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
                          int /*iteration*/) override {}
  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
};

// TestEventListeners lets users add listeners to track events in Google Test.
class GTEST_API_ TestEventListeners {
 public:
  TestEventListeners();
  ~TestEventListeners();

  // Appends an event listener to the end of the list. Google Test assumes
  // the ownership of the listener (i.e. it will delete the listener when
  // the test program finishes).
  void Append(TestEventListener* listener);

  // Removes the given event listener from the list and returns it.  It then
  // becomes the caller's responsibility to delete the listener. Returns
  // NULL if the listener is not found in the list.
  TestEventListener* Release(TestEventListener* listener);

  // Returns the standard listener responsible for the default console
  // output.  Can be removed from the listeners list to shut down default
  // console output.  Note that removing this object from the listener list
  // with Release transfers its ownership to the caller and makes this
  // function return NULL the next time.
  TestEventListener* default_result_printer() const {
    return default_result_printer_;
  }

  // Returns the standard listener responsible for the default XML output
  // controlled by the --gtest_output=xml flag.  Can be removed from the
  // listeners list by users who want to shut down the default XML output
  // controlled by this flag and substitute it with custom one.  Note that
  // removing this object from the listener list with Release transfers its
  // ownership to the caller and makes this function return NULL the next
  // time.
  TestEventListener* default_xml_generator() const {
    return default_xml_generator_;
  }

 private:
  friend class TestSuite;
  friend class TestInfo;
  friend class internal::DefaultGlobalTestPartResultReporter;
  friend class internal::NoExecDeathTest;
  friend class internal::TestEventListenersAccessor;
  friend class internal::UnitTestImpl;

  // Returns repeater that broadcasts the TestEventListener events to all
  // subscribers.
  TestEventListener* repeater();

  // Sets the default_result_printer attribute to the provided listener.
  // The listener is also added to the listener list and previous
  // default_result_printer is removed from it and deleted. The listener can
  // also be NULL in which case it will not be added to the list. Does
  // nothing if the previous and the current listener objects are the same.
  void SetDefaultResultPrinter(TestEventListener* listener);

  // Sets the default_xml_generator attribute to the provided listener.  The
  // listener is also added to the listener list and previous
  // default_xml_generator is removed from it and deleted. The listener can
  // also be NULL in which case it will not be added to the list. Does
  // nothing if the previous and the current listener objects are the same.
  void SetDefaultXmlGenerator(TestEventListener* listener);

  // Controls whether events will be forwarded by the repeater to the
  // listeners in the list.
  bool EventForwardingEnabled() const;
  void SuppressEventForwarding();

  // The actual list of listeners.
  internal::TestEventRepeater* repeater_;
  // Listener responsible for the standard result output.
  TestEventListener* default_result_printer_;
  // Listener responsible for the creation of the XML output file.
  TestEventListener* default_xml_generator_;

  // We disallow copying TestEventListeners.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventListeners);
};

// A UnitTest consists of a vector of TestSuites.
//
// This is a singleton class.  The only instance of UnitTest is
// created when UnitTest::GetInstance() is first called.  This
// instance is never deleted.
//
// UnitTest is not copyable.
//
// This class is thread-safe as long as the methods are called
// according to their specification.
class GTEST_API_ UnitTest {
 public:
  // Gets the singleton UnitTest object.  The first time this method
  // is called, a UnitTest object is constructed and returned.
  // Consecutive calls will return the same object.
  static UnitTest* GetInstance();

  // Runs all tests in this UnitTest object and prints the result.
  // Returns 0 if successful, or 1 otherwise.
  //
  // This method can only be called from the main thread.
  //
  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
  int Run() GTEST_MUST_USE_RESULT_;

  // Returns the working directory when the first TEST() or TEST_F()
  // was executed.  The UnitTest object owns the string.
  const char* original_working_dir() const;

  // Returns the TestSuite object for the test that's currently running,
  // or NULL if no test is running.
  const TestSuite* current_test_suite() const GTEST_LOCK_EXCLUDED_(mutex_);

// Legacy API is still available but deprecated
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  const TestCase* current_test_case() const GTEST_LOCK_EXCLUDED_(mutex_);
#endif

  // Returns the TestInfo object for the test that's currently running,
  // or NULL if no test is running.
  const TestInfo* current_test_info() const
      GTEST_LOCK_EXCLUDED_(mutex_);

  // Returns the random seed used at the start of the current test run.
  int random_seed() const;

  // Returns the ParameterizedTestSuiteRegistry object used to keep track of
  // value-parameterized tests and instantiate and register them.
  //
  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
  internal::ParameterizedTestSuiteRegistry& parameterized_test_registry()
      GTEST_LOCK_EXCLUDED_(mutex_);

  // Gets the number of successful test suites.
  int successful_test_suite_count() const;

  // Gets the number of failed test suites.
  int failed_test_suite_count() const;

  // Gets the number of all test suites.
  int total_test_suite_count() const;

  // Gets the number of all test suites that contain at least one test
  // that should run.
  int test_suite_to_run_count() const;

  //  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  int successful_test_case_count() const;
  int failed_test_case_count() const;
  int total_test_case_count() const;
  int test_case_to_run_count() const;
#endif  //  EMOVE_LEGACY_TEST_CASEAPI

  // Gets the number of successful tests.
  int successful_test_count() const;

  // Gets the number of skipped tests.
  int skipped_test_count() const;

  // Gets the number of failed tests.
  int failed_test_count() const;

  // Gets the number of disabled tests that will be reported in the XML report.
  int reportable_disabled_test_count() const;

  // Gets the number of disabled tests.
  int disabled_test_count() const;

  // Gets the number of tests to be printed in the XML report.
  int reportable_test_count() const;

  // Gets the number of all tests.
  int total_test_count() const;

  // Gets the number of tests that should run.
  int test_to_run_count() const;

  // Gets the time of the test program start, in ms from the start of the
  // UNIX epoch.
  TimeInMillis start_timestamp() const;

  // Gets the elapsed time, in milliseconds.
  TimeInMillis elapsed_time() const;

  // Returns true iff the unit test passed (i.e. all test suites passed).
  bool Passed() const;

  // Returns true iff the unit test failed (i.e. some test suite failed
  // or something outside of all tests failed).
  bool Failed() const;

  // Gets the i-th test suite among all the test suites. i can range from 0 to
  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
  const TestSuite* GetTestSuite(int i) const;

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
  const TestCase* GetTestCase(int i) const;
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

  // Returns the TestResult containing information on test failures and
  // properties logged outside of individual test suites.
  const TestResult& ad_hoc_test_result() const;

  // Returns the list of event listeners that can be used to track events
  // inside Google Test.
  TestEventListeners& listeners();

 private:
  // Registers and returns a global test environment.  When a test
  // program is run, all global test environments will be set-up in
  // the order they were registered.  After all tests in the program
  // have finished, all global test environments will be torn-down in
  // the *reverse* order they were registered.
  //
  // The UnitTest object takes ownership of the given environment.
  //
  // This method can only be called from the main thread.
  Environment* AddEnvironment(Environment* env);

  // Adds a TestPartResult to the current TestResult object.  All
  // Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc)
  // eventually call this to report their results.  The user code
  // should use the assertion macros instead of calling this directly.
  void AddTestPartResult(TestPartResult::Type result_type,
                         const char* file_name,
                         int line_number,
                         const std::string& message,
                         const std::string& os_stack_trace)
      GTEST_LOCK_EXCLUDED_(mutex_);

  // Adds a TestProperty to the current TestResult object when invoked from
  // inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
  // from SetUpTestSuite or TearDownTestSuite, or to the global property set
  // when invoked elsewhere.  If the result already contains a property with
  // the same key, the value will be updated.
  void RecordProperty(const std::string& key, const std::string& value);

  // Gets the i-th test suite among all the test suites. i can range from 0 to
  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
  TestSuite* GetMutableTestSuite(int i);

  // Accessors for the implementation object.
  internal::UnitTestImpl* impl() { return impl_; }
  const internal::UnitTestImpl* impl() const { return impl_; }

  // These classes and functions are friends as they need to access private
  // members of UnitTest.
  friend class ScopedTrace;
  friend class Test;
  friend class internal::AssertHelper;
  friend class internal::StreamingListenerTest;
  friend class internal::UnitTestRecordPropertyTestHelper;
  friend Environment* AddGlobalTestEnvironment(Environment* env);
  friend internal::UnitTestImpl* internal::GetUnitTestImpl();
  friend void internal::ReportFailureInUnknownLocation(
      TestPartResult::Type result_type,
      const std::string& message);

  // Creates an empty UnitTest.
  UnitTest();

  // D'tor
  virtual ~UnitTest();

  // Pushes a trace defined by SCOPED_TRACE() on to the per-thread
  // Google Test trace stack.
  void PushGTestTrace(const internal::TraceInfo& trace)
      GTEST_LOCK_EXCLUDED_(mutex_);

  // Pops a trace from the per-thread Google Test trace stack.
  void PopGTestTrace()
      GTEST_LOCK_EXCLUDED_(mutex_);

  // Protects mutable state in *impl_.  This is mutable as some const
  // methods need to lock it too.
  mutable internal::Mutex mutex_;

  // Opaque implementation object.  This field is never changed once
  // the object is constructed.  We don't mark it as const here, as
  // doing so will cause a warning in the constructor of UnitTest.
  // Mutable state in *impl_ is protected by mutex_.
  internal::UnitTestImpl* impl_;

  // We disallow copying UnitTest.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTest);
};

// A convenient wrapper for adding an environment for the test
// program.
//
// You should call this before RUN_ALL_TESTS() is called, probably in
// main().  If you use gtest_main, you need to call this before main()
// starts for it to take effect.  For example, you can define a global
// variable like this:
//
//   testing::Environment* const foo_env =
//       testing::AddGlobalTestEnvironment(new FooEnvironment);
//
// However, we strongly recommend you to write your own main() and
// call AddGlobalTestEnvironment() there, as relying on initialization
// of global variables makes the code harder to read and may cause
// problems when you register multiple environments from different
// translation units and the environments have dependencies among them
// (remember that the compiler doesn't guarantee the order in which
// global variables from different translation units are initialized).
inline Environment* AddGlobalTestEnvironment(Environment* env) {
  return UnitTest::GetInstance()->AddEnvironment(env);
}

// Initializes Google Test.  This must be called before calling
// RUN_ALL_TESTS().  In particular, it parses a command line for the
// flags that Google Test recognizes.  Whenever a Google Test flag is
// seen, it is removed from argv, and *argc is decremented.
//
// No value is returned.  Instead, the Google Test flag variables are
// updated.
//
// Calling the function for the second time has no user-visible effect.
GTEST_API_ void InitGoogleTest(int* argc, char** argv);

// This overloaded version can be used in Windows programs compiled in
// UNICODE mode.
GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);

// This overloaded version can be used on Arduino/embedded platforms where
// there is no argc/argv.
GTEST_API_ void InitGoogleTest();

namespace internal {

// Separate the error generating code from the code path to reduce the stack
// frame size of CmpHelperEQ. This helps reduce the overhead of some sanitizers
// when calling EXPECT_* in a tight loop.
template <typename T1, typename T2>
AssertionResult CmpHelperEQFailure(const char* lhs_expression,
                                   const char* rhs_expression,
                                   const T1& lhs, const T2& rhs) {
  return EqFailure(lhs_expression,
                   rhs_expression,
                   FormatForComparisonFailureMessage(lhs, rhs),
                   FormatForComparisonFailureMessage(rhs, lhs),
                   false);
}

// This block of code defines operator==/!=
// to block lexical scope lookup.
// It prevents using invalid operator==/!= defined at namespace scope.
struct faketype {};
inline bool operator==(faketype, faketype) { return true; }
inline bool operator!=(faketype, faketype) { return false; }

// The helper function for {ASSERT|EXPECT}_EQ.
template <typename T1, typename T2>
AssertionResult CmpHelperEQ(const char* lhs_expression,
                            const char* rhs_expression,
                            const T1& lhs,
                            const T2& rhs) {
  if (lhs == rhs) {
    return AssertionSuccess();
  }

  return CmpHelperEQFailure(lhs_expression, rhs_expression, lhs, rhs);
}

// With this overloaded version, we allow anonymous enums to be used
// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous enums
// can be implicitly cast to BiggestInt.
GTEST_API_ AssertionResult CmpHelperEQ(const char* lhs_expression,
                                       const char* rhs_expression,
                                       BiggestInt lhs,
                                       BiggestInt rhs);

class EqHelper {
 public:
  // This templatized version is for the general case.
  template <
      typename T1, typename T2,
      // Disable this overload for cases where one argument is a pointer
      // and the other is the null pointer constant.
      typename std::enable_if<!std::is_integral<T1>::value ||
                              !std::is_pointer<T2>::value>::type* = nullptr>
  static AssertionResult Compare(const char* lhs_expression,
                                 const char* rhs_expression, const T1& lhs,
                                 const T2& rhs) {
    return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
  }

  // With this overloaded version, we allow anonymous enums to be used
  // in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous
  // enums can be implicitly cast to BiggestInt.
  //
  // Even though its body looks the same as the above version, we
  // cannot merge the two, as it will make anonymous enums unhappy.
  static AssertionResult Compare(const char* lhs_expression,
                                 const char* rhs_expression,
                                 BiggestInt lhs,
                                 BiggestInt rhs) {
    return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
  }

  template <typename T>
  static AssertionResult Compare(
      const char* lhs_expression, const char* rhs_expression,
      // Handle cases where '0' is used as a null pointer literal.
      std::nullptr_t /* lhs */, T* rhs) {
    // We already know that 'lhs' is a null pointer.
    return CmpHelperEQ(lhs_expression, rhs_expression, static_cast<T*>(nullptr),
                       rhs);
  }
};

// Separate the error generating code from the code path to reduce the stack
// frame size of CmpHelperOP. This helps reduce the overhead of some sanitizers
// when calling EXPECT_OP in a tight loop.
template <typename T1, typename T2>
AssertionResult CmpHelperOpFailure(const char* expr1, const char* expr2,
                                   const T1& val1, const T2& val2,
                                   const char* op) {
  return AssertionFailure()
         << "Expected: (" << expr1 << ") " << op << " (" << expr2
         << "), actual: " << FormatForComparisonFailureMessage(val1, val2)
         << " vs " << FormatForComparisonFailureMessage(val2, val1);
}

// A macro for implementing the helper functions needed to implement
// ASSERT_?? and EXPECT_??.  It is here just to avoid copy-and-paste
// of similar code.
//
// For each templatized helper function, we also define an overloaded
// version for BiggestInt in order to reduce code bloat and allow
// anonymous enums to be used with {ASSERT|EXPECT}_?? when compiled
// with gcc 4.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.

#define GTEST_IMPL_CMP_HELPER_(op_name, op)\
template <typename T1, typename T2>\
AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
                                   const T1& val1, const T2& val2) {\
  if (val1 op val2) {\
    return AssertionSuccess();\
  } else {\
    return CmpHelperOpFailure(expr1, expr2, val1, val2, #op);\
  }\
}\
GTEST_API_ AssertionResult CmpHelper##op_name(\
    const char* expr1, const char* expr2, BiggestInt val1, BiggestInt val2)

// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.

// Implements the helper function for {ASSERT|EXPECT}_NE
GTEST_IMPL_CMP_HELPER_(NE, !=);
// Implements the helper function for {ASSERT|EXPECT}_LE
GTEST_IMPL_CMP_HELPER_(LE, <=);
// Implements the helper function for {ASSERT|EXPECT}_LT
GTEST_IMPL_CMP_HELPER_(LT, <);
// Implements the helper function for {ASSERT|EXPECT}_GE
GTEST_IMPL_CMP_HELPER_(GE, >=);
// Implements the helper function for {ASSERT|EXPECT}_GT
GTEST_IMPL_CMP_HELPER_(GT, >);

#undef GTEST_IMPL_CMP_HELPER_

// The helper function for {ASSERT|EXPECT}_STREQ.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
                                          const char* s2_expression,
                                          const char* s1,
                                          const char* s2);

// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char* s1_expression,
                                              const char* s2_expression,
                                              const char* s1,
                                              const char* s2);

// The helper function for {ASSERT|EXPECT}_STRNE.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
                                          const char* s2_expression,
                                          const char* s1,
                                          const char* s2);

// The helper function for {ASSERT|EXPECT}_STRCASENE.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
                                              const char* s2_expression,
                                              const char* s1,
                                              const char* s2);


// Helper function for *_STREQ on wide strings.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
                                          const char* s2_expression,
                                          const wchar_t* s1,
                                          const wchar_t* s2);

// Helper function for *_STRNE on wide strings.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
                                          const char* s2_expression,
                                          const wchar_t* s1,
                                          const wchar_t* s2);

}  // namespace internal

// IsSubstring() and IsNotSubstring() are intended to be used as the
// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by
// themselves.  They check whether needle is a substring of haystack
// (NULL is considered a substring of itself only), and return an
// appropriate error message when they fail.
//
// The {needle,haystack}_expr arguments are the stringified
// expressions that generated the two real arguments.
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const char* needle, const char* haystack);
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const wchar_t* needle, const wchar_t* haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const char* needle, const char* haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const wchar_t* needle, const wchar_t* haystack);
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::string& needle, const ::std::string& haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::string& needle, const ::std::string& haystack);

#if GTEST_HAS_STD_WSTRING
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::wstring& needle, const ::std::wstring& haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::wstring& needle, const ::std::wstring& haystack);
#endif  // GTEST_HAS_STD_WSTRING

namespace internal {

// Helper template function for comparing floating-points.
//
// Template parameter:
//
//   RawType: the raw floating-point type (either float or double)
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
template <typename RawType>
AssertionResult CmpHelperFloatingPointEQ(const char* lhs_expression,
                                         const char* rhs_expression,
                                         RawType lhs_value,
                                         RawType rhs_value) {
  const FloatingPoint<RawType> lhs(lhs_value), rhs(rhs_value);

  if (lhs.AlmostEquals(rhs)) {
    return AssertionSuccess();
  }

  ::std::stringstream lhs_ss;
  lhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
         << lhs_value;

  ::std::stringstream rhs_ss;
  rhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
         << rhs_value;

  return EqFailure(lhs_expression,
                   rhs_expression,
                   StringStreamToString(&lhs_ss),
                   StringStreamToString(&rhs_ss),
                   false);
}

// Helper function for implementing ASSERT_NEAR.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
                                                const char* expr2,
                                                const char* abs_error_expr,
                                                double val1,
                                                double val2,
                                                double abs_error);

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
// A class that enables one to stream messages to assertion macros
class GTEST_API_ AssertHelper {
 public:
  // Constructor.
  AssertHelper(TestPartResult::Type type,
               const char* file,
               int line,
               const char* message);
  ~AssertHelper();

  // Message assignment is a semantic trick to enable assertion
  // streaming; see the GTEST_MESSAGE_ macro below.
  void operator=(const Message& message) const;

 private:
  // We put our data in a struct so that the size of the AssertHelper class can
  // be as small as possible.  This is important because gcc is incapable of
  // re-using stack space even for temporary variables, so every EXPECT_EQ
  // reserves stack space for another AssertHelper.
  struct AssertHelperData {
    AssertHelperData(TestPartResult::Type t,
                     const char* srcfile,
                     int line_num,
                     const char* msg)
        : type(t), file(srcfile), line(line_num), message(msg) { }

    TestPartResult::Type const type;
    const char* const file;
    int const line;
    std::string const message;

   private:
    GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelperData);
  };

  AssertHelperData* const data_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelper);
};

enum GTestColor { COLOR_DEFAULT, COLOR_RED, COLOR_GREEN, COLOR_YELLOW };

GTEST_API_ GTEST_ATTRIBUTE_PRINTF_(2, 3) void ColoredPrintf(GTestColor color,
                                                            const char* fmt,
                                                            ...);

}  // namespace internal

// The pure interface class that all value-parameterized tests inherit from.
// A value-parameterized class must inherit from both ::testing::Test and
// ::testing::WithParamInterface. In most cases that just means inheriting
// from ::testing::TestWithParam, but more complicated test hierarchies
// may need to inherit from Test and WithParamInterface at different levels.
//
// This interface has support for accessing the test parameter value via
// the GetParam() method.
//
// Use it with one of the parameter generator defining functions, like Range(),
// Values(), ValuesIn(), Bool(), and Combine().
//
// class FooTest : public ::testing::TestWithParam<int> {
//  protected:
//   FooTest() {
//     // Can use GetParam() here.
//   }
//   ~FooTest() override {
//     // Can use GetParam() here.
//   }
//   void SetUp() override {
//     // Can use GetParam() here.
//   }
//   void TearDown override {
//     // Can use GetParam() here.
//   }
// };
// TEST_P(FooTest, DoesBar) {
//   // Can use GetParam() method here.
//   Foo foo;
//   ASSERT_TRUE(foo.DoesBar(GetParam()));
// }
// INSTANTIATE_TEST_SUITE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));

template <typename T>
class WithParamInterface {
 public:
  typedef T ParamType;
  virtual ~WithParamInterface() {}

  // The current parameter value. Is also available in the test fixture's
  // constructor.
  static const ParamType& GetParam() {
    GTEST_CHECK_(parameter_ != nullptr)
        << "GetParam() can only be called inside a value-parameterized test "
        << "-- did you intend to write TEST_P instead of TEST_F?";
    return *parameter_;
  }

 private:
  // Sets parameter value. The caller is responsible for making sure the value
  // remains alive and unchanged throughout the current test.
  static void SetParam(const ParamType* parameter) {
    parameter_ = parameter;
  }

  // Static value used for accessing parameter during a test lifetime.
  static const ParamType* parameter_;

  // TestClass must be a subclass of WithParamInterface<T> and Test.
  template <class TestClass> friend class internal::ParameterizedTestFactory;
};

template <typename T>
const T* WithParamInterface<T>::parameter_ = nullptr;

// Most value-parameterized classes can ignore the existence of
// WithParamInterface, and can just inherit from ::testing::TestWithParam.

template <typename T>
class TestWithParam : public Test, public WithParamInterface<T> {
};

// Macros for indicating success/failure in test code.

// Skips test in runtime.
// Skipping test aborts current function.
// Skipped tests are neither successful nor failed.
#define GTEST_SKIP() GTEST_SKIP_("Skipped")

// ADD_FAILURE unconditionally adds a failure to the current test.
// SUCCEED generates a success - it doesn't automatically make the
// current test successful, as a test is only successful when it has
// no failure.
//
// EXPECT_* verifies that a certain condition is satisfied.  If not,
// it behaves like ADD_FAILURE.  In particular:
//
//   EXPECT_TRUE  verifies that a Boolean condition is true.
//   EXPECT_FALSE verifies that a Boolean condition is false.
//
// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except
// that they will also abort the current function on failure.  People
// usually want the fail-fast behavior of FAIL and ASSERT_*, but those
// writing data-driven tests often find themselves using ADD_FAILURE
// and EXPECT_* more.

// Generates a nonfatal failure with a generic message.
#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed")

// Generates a nonfatal failure at the given source file location with
// a generic message.
#define ADD_FAILURE_AT(file, line) \
  GTEST_MESSAGE_AT_(file, line, "Failed", \
                    ::testing::TestPartResult::kNonFatalFailure)

// Generates a fatal failure with a generic message.
#define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")

// Define this macro to 1 to omit the definition of FAIL(), which is a
// generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_FAIL
# define FAIL() GTEST_FAIL()
#endif

// Generates a success with a generic message.
#define GTEST_SUCCEED() GTEST_SUCCESS_("Succeeded")

// Define this macro to 1 to omit the definition of SUCCEED(), which
// is a generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_SUCCEED
# define SUCCEED() GTEST_SUCCEED()
#endif

// Macros for testing exceptions.
//
//    * {ASSERT|EXPECT}_THROW(statement, expected_exception):
//         Tests that the statement throws the expected exception.
//    * {ASSERT|EXPECT}_NO_THROW(statement):
//         Tests that the statement doesn't throw any exception.
//    * {ASSERT|EXPECT}_ANY_THROW(statement):
//         Tests that the statement throws an exception.

#define EXPECT_THROW(statement, expected_exception) \
  GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_)
#define EXPECT_NO_THROW(statement) \
  GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_)
#define EXPECT_ANY_THROW(statement) \
  GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_)
#define ASSERT_THROW(statement, expected_exception) \
  GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_)
#define ASSERT_NO_THROW(statement) \
  GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_)
#define ASSERT_ANY_THROW(statement) \
  GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_)

// Boolean assertions. Condition can be either a Boolean expression or an
// AssertionResult. For more information on how to use AssertionResult with
// these macros see comments on that class.
#define EXPECT_TRUE(condition) \
  GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
                      GTEST_NONFATAL_FAILURE_)
#define EXPECT_FALSE(condition) \
  GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
                      GTEST_NONFATAL_FAILURE_)
#define ASSERT_TRUE(condition) \
  GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
                      GTEST_FATAL_FAILURE_)
#define ASSERT_FALSE(condition) \
  GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
                      GTEST_FATAL_FAILURE_)

// Macros for testing equalities and inequalities.
//
//    * {ASSERT|EXPECT}_EQ(v1, v2): Tests that v1 == v2
//    * {ASSERT|EXPECT}_NE(v1, v2): Tests that v1 != v2
//    * {ASSERT|EXPECT}_LT(v1, v2): Tests that v1 < v2
//    * {ASSERT|EXPECT}_LE(v1, v2): Tests that v1 <= v2
//    * {ASSERT|EXPECT}_GT(v1, v2): Tests that v1 > v2
//    * {ASSERT|EXPECT}_GE(v1, v2): Tests that v1 >= v2
//
// When they are not, Google Test prints both the tested expressions and
// their actual values.  The values must be compatible built-in types,
// or you will get a compiler error.  By "compatible" we mean that the
// values can be compared by the respective operator.
//
// Note:
//
//   1. It is possible to make a user-defined type work with
//   {ASSERT|EXPECT}_??(), but that requires overloading the
//   comparison operators and is thus discouraged by the Google C++
//   Usage Guide.  Therefore, you are advised to use the
//   {ASSERT|EXPECT}_TRUE() macro to assert that two objects are
//   equal.
//
//   2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on
//   pointers (in particular, C strings).  Therefore, if you use it
//   with two C strings, you are testing how their locations in memory
//   are related, not how their content is related.  To compare two C
//   strings by content, use {ASSERT|EXPECT}_STR*().
//
//   3. {ASSERT|EXPECT}_EQ(v1, v2) is preferred to
//   {ASSERT|EXPECT}_TRUE(v1 == v2), as the former tells you
//   what the actual value is when it fails, and similarly for the
//   other comparisons.
//
//   4. Do not depend on the order in which {ASSERT|EXPECT}_??()
//   evaluate their arguments, which is undefined.
//
//   5. These macros evaluate their arguments exactly once.
//
// Examples:
//
//   EXPECT_NE(Foo(), 5);
//   EXPECT_EQ(a_pointer, NULL);
//   ASSERT_LT(i, array_size);
//   ASSERT_GT(records.size(), 0) << "There is no record left.";

#define EXPECT_EQ(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
#define EXPECT_NE(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
#define EXPECT_LE(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
#define EXPECT_LT(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
#define EXPECT_GE(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
#define EXPECT_GT(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)

#define GTEST_ASSERT_EQ(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
#define GTEST_ASSERT_NE(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
#define GTEST_ASSERT_LE(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
#define GTEST_ASSERT_LT(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
#define GTEST_ASSERT_GE(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
#define GTEST_ASSERT_GT(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)

// Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
// ASSERT_XY(), which clashes with some users' own code.

#if !GTEST_DONT_DEFINE_ASSERT_EQ
# define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_NE
# define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_LE
# define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_LT
# define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_GE
# define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_GT
# define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
#endif

// C-string Comparisons.  All tests treat NULL and any non-NULL string
// as different.  Two NULLs are equal.
//
//    * {ASSERT|EXPECT}_STREQ(s1, s2):     Tests that s1 == s2
//    * {ASSERT|EXPECT}_STRNE(s1, s2):     Tests that s1 != s2
//    * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case
//    * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case
//
// For wide or narrow string objects, you can use the
// {ASSERT|EXPECT}_??() macros.
//
// Don't depend on the order in which the arguments are evaluated,
// which is undefined.
//
// These macros evaluate their arguments exactly once.

#define EXPECT_STREQ(s1, s2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
#define EXPECT_STRNE(s1, s2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
#define EXPECT_STRCASEEQ(s1, s2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
#define EXPECT_STRCASENE(s1, s2)\
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)

#define ASSERT_STREQ(s1, s2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
#define ASSERT_STRNE(s1, s2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
#define ASSERT_STRCASEEQ(s1, s2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
#define ASSERT_STRCASENE(s1, s2)\
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)

// Macros for comparing floating-point numbers.
//
//    * {ASSERT|EXPECT}_FLOAT_EQ(val1, val2):
//         Tests that two float values are almost equal.
//    * {ASSERT|EXPECT}_DOUBLE_EQ(val1, val2):
//         Tests that two double values are almost equal.
//    * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error):
//         Tests that v1 and v2 are within the given distance to each other.
//
// Google Test uses ULP-based comparison to automatically pick a default
// error bound that is appropriate for the operands.  See the
// FloatingPoint template class in gtest-internal.h if you are
// interested in the implementation details.

#define EXPECT_FLOAT_EQ(val1, val2)\
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
                      val1, val2)

#define EXPECT_DOUBLE_EQ(val1, val2)\
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
                      val1, val2)

#define ASSERT_FLOAT_EQ(val1, val2)\
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
                      val1, val2)

#define ASSERT_DOUBLE_EQ(val1, val2)\
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
                      val1, val2)

#define EXPECT_NEAR(val1, val2, abs_error)\
  EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
                      val1, val2, abs_error)

#define ASSERT_NEAR(val1, val2, abs_error)\
  ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
                      val1, val2, abs_error)

// These predicate format functions work on floating-point values, and
// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g.
//
//   EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0);

// Asserts that val1 is less than, or almost equal to, val2.  Fails
// otherwise.  In particular, it fails if either val1 or val2 is NaN.
GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
                                   float val1, float val2);
GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
                                    double val1, double val2);


#if GTEST_OS_WINDOWS

// Macros that test for HRESULT failure and success, these are only useful
// on Windows, and rely on Windows SDK macros and APIs to compile.
//
//    * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr)
//
// When expr unexpectedly fails or succeeds, Google Test prints the
// expected result and the actual result with both a human-readable
// string representation of the error, if available, as well as the
// hex result code.
# define EXPECT_HRESULT_SUCCEEDED(expr) \
    EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))

# define ASSERT_HRESULT_SUCCEEDED(expr) \
    ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))

# define EXPECT_HRESULT_FAILED(expr) \
    EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))

# define ASSERT_HRESULT_FAILED(expr) \
    ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))

#endif  // GTEST_OS_WINDOWS

// Macros that execute statement and check that it doesn't generate new fatal
// failures in the current thread.
//
//   * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement);
//
// Examples:
//
//   EXPECT_NO_FATAL_FAILURE(Process());
//   ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed";
//
#define ASSERT_NO_FATAL_FAILURE(statement) \
    GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_)
#define EXPECT_NO_FATAL_FAILURE(statement) \
    GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_)

// Causes a trace (including the given source file path and line number,
// and the given message) to be included in every test failure message generated
// by code in the scope of the lifetime of an instance of this class. The effect
// is undone with the destruction of the instance.
//
// The message argument can be anything streamable to std::ostream.
//
// Example:
//   testing::ScopedTrace trace("file.cc", 123, "message");
//
class GTEST_API_ ScopedTrace {
 public:
  // The c'tor pushes the given source file location and message onto
  // a trace stack maintained by Google Test.

  // Template version. Uses Message() to convert the values into strings.
  // Slow, but flexible.
  template <typename T>
  ScopedTrace(const char* file, int line, const T& message) {
    PushTrace(file, line, (Message() << message).GetString());
  }

  // Optimize for some known types.
  ScopedTrace(const char* file, int line, const char* message) {
    PushTrace(file, line, message ? message : "(null)");
  }

  ScopedTrace(const char* file, int line, const std::string& message) {
    PushTrace(file, line, message);
  }

  // The d'tor pops the info pushed by the c'tor.
  //
  // Note that the d'tor is not virtual in order to be efficient.
  // Don't inherit from ScopedTrace!
  ~ScopedTrace();

 private:
  void PushTrace(const char* file, int line, std::string message);

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedTrace);
} GTEST_ATTRIBUTE_UNUSED_;  // A ScopedTrace object does its job in its
                            // c'tor and d'tor.  Therefore it doesn't
                            // need to be used otherwise.

// Causes a trace (including the source file path, the current line
// number, and the given message) to be included in every test failure
// message generated by code in the current scope.  The effect is
// undone when the control leaves the current scope.
//
// The message argument can be anything streamable to std::ostream.
//
// In the implementation, we include the current line number as part
// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s
// to appear in the same block - as long as they are on different
// lines.
//
// Assuming that each thread maintains its own stack of traces.
// Therefore, a SCOPED_TRACE() would (correctly) only affect the
// assertions in its own thread.
#define SCOPED_TRACE(message) \
  ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\
    __FILE__, __LINE__, (message))


// Compile-time assertion for type equality.
// StaticAssertTypeEq<type1, type2>() compiles iff type1 and type2 are
// the same type.  The value it returns is not interesting.
//
// Instead of making StaticAssertTypeEq a class template, we make it a
// function template that invokes a helper class template.  This
// prevents a user from misusing StaticAssertTypeEq<T1, T2> by
// defining objects of that type.
//
// CAVEAT:
//
// When used inside a method of a class template,
// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is
// instantiated.  For example, given:
//
//   template <typename T> class Foo {
//    public:
//     void Bar() { testing::StaticAssertTypeEq<int, T>(); }
//   };
//
// the code:
//
//   void Test1() { Foo<bool> foo; }
//
// will NOT generate a compiler error, as Foo<bool>::Bar() is never
// actually instantiated.  Instead, you need:
//
//   void Test2() { Foo<bool> foo; foo.Bar(); }
//
// to cause a compiler error.
template <typename T1, typename T2>
bool StaticAssertTypeEq() {
  (void)internal::StaticAssertTypeEqHelper<T1, T2>();
  return true;
}

// Defines a test.
//
// The first parameter is the name of the test suite, and the second
// parameter is the name of the test within the test suite.
//
// The convention is to end the test suite name with "Test".  For
// example, a test suite for the Foo class can be named FooTest.
//
// Test code should appear between braces after an invocation of
// this macro.  Example:
//
//   TEST(FooTest, InitializesCorrectly) {
//     Foo foo;
//     EXPECT_TRUE(foo.StatusIsOK());
//   }

// Note that we call GetTestTypeId() instead of GetTypeId<
// ::testing::Test>() here to get the type ID of testing::Test.  This
// is to work around a suspected linker bug when using Google Test as
// a framework on Mac OS X.  The bug causes GetTypeId<
// ::testing::Test>() to return different values depending on whether
// the call is from the Google Test framework itself or from user test
// code.  GetTestTypeId() is guaranteed to always return the same
// value, as it always calls GetTypeId<>() from the Google Test
// framework.
#define GTEST_TEST(test_suite_name, test_name)             \
  GTEST_TEST_(test_suite_name, test_name, ::testing::Test, \
              ::testing::internal::GetTestTypeId())

// Define this macro to 1 to omit the definition of TEST(), which
// is a generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_TEST
#define TEST(test_suite_name, test_name) GTEST_TEST(test_suite_name, test_name)
#endif

// Defines a test that uses a test fixture.
//
// The first parameter is the name of the test fixture class, which
// also doubles as the test suite name.  The second parameter is the
// name of the test within the test suite.
//
// A test fixture class must be declared earlier.  The user should put
// the test code between braces after using this macro.  Example:
//
//   class FooTest : public testing::Test {
//    protected:
//     void SetUp() override { b_.AddElement(3); }
//
//     Foo a_;
//     Foo b_;
//   };
//
//   TEST_F(FooTest, InitializesCorrectly) {
//     EXPECT_TRUE(a_.StatusIsOK());
//   }
//
//   TEST_F(FooTest, ReturnsElementCountCorrectly) {
//     EXPECT_EQ(a_.size(), 0);
//     EXPECT_EQ(b_.size(), 1);
//   }
//
// GOOGLETEST_CM0011 DO NOT DELETE
#define TEST_F(test_fixture, test_name)\
  GTEST_TEST_(test_fixture, test_name, test_fixture, \
              ::testing::internal::GetTypeId<test_fixture>())

// Returns a path to temporary directory.
// Tries to determine an appropriate directory for the platform.
GTEST_API_ std::string TempDir();

#ifdef _MSC_VER
#  pragma warning(pop)
#endif

// Dynamically registers a test with the framework.
//
// This is an advanced API only to be used when the `TEST` macros are
// insufficient. The macros should be preferred when possible, as they avoid
// most of the complexity of calling this function.
//
// The `factory` argument is a factory callable (move-constructible) object or
// function pointer that creates a new instance of the Test object. It
// handles ownership to the caller. The signature of the callable is
// `Fixture*()`, where `Fixture` is the test fixture class for the test. All
// tests registered with the same `test_suite_name` must return the same
// fixture type. This is checked at runtime.
//
// The framework will infer the fixture class from the factory and will call
// the `SetUpTestSuite` and `TearDownTestSuite` for it.
//
// Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
// undefined.
//
// Use case example:
//
// class MyFixture : public ::testing::Test {
//  public:
//   // All of these optional, just like in regular macro usage.
//   static void SetUpTestSuite() { ... }
//   static void TearDownTestSuite() { ... }
//   void SetUp() override { ... }
//   void TearDown() override { ... }
// };
//
// class MyTest : public MyFixture {
//  public:
//   explicit MyTest(int data) : data_(data) {}
//   void TestBody() override { ... }
//
//  private:
//   int data_;
// };
//
// void RegisterMyTests(const std::vector<int>& values) {
//   for (int v : values) {
//     ::testing::RegisterTest(
//         "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
//         std::to_string(v).c_str(),
//         __FILE__, __LINE__,
//         // Important to use the fixture type as the return type here.
//         [=]() -> MyFixture* { return new MyTest(v); });
//   }
// }
// ...
// int main(int argc, char** argv) {
//   std::vector<int> values_to_test = LoadValuesFromConfig();
//   RegisterMyTests(values_to_test);
//   ...
//   return RUN_ALL_TESTS();
// }
//
template <int&... ExplicitParameterBarrier, typename Factory>
TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
                       const char* type_param, const char* value_param,
                       const char* file, int line, Factory factory) {
  using TestT = typename std::remove_pointer<decltype(factory())>::type;

  class FactoryImpl : public internal::TestFactoryBase {
   public:
    explicit FactoryImpl(Factory f) : factory_(std::move(f)) {}
    Test* CreateTest() override { return factory_(); }

   private:
    Factory factory_;
  };

  return internal::MakeAndRegisterTestInfo(
      test_suite_name, test_name, type_param, value_param,
      internal::CodeLocation(file, line), internal::GetTypeId<TestT>(),
      internal::SuiteApiResolver<TestT>::GetSetUpCaseOrSuite(),
      internal::SuiteApiResolver<TestT>::GetTearDownCaseOrSuite(),
      new FactoryImpl{std::move(factory)});
}

}  // namespace testing

// Use this function in main() to run all tests.  It returns 0 if all
// tests are successful, or 1 otherwise.
//
// RUN_ALL_TESTS() should be invoked after the command line has been
// parsed by InitGoogleTest().
//
// This function was formerly a macro; thus, it is in the global
// namespace and has an all-caps name.
int RUN_ALL_TESTS() GTEST_MUST_USE_RESULT_;

inline int RUN_ALL_TESTS() {
  return ::testing::UnitTest::GetInstance()->Run();
}

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

#endif  // GTEST_INCLUDE_GTEST_GTEST_H_