1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // Basic integer type definitions. 18 19 #ifndef LIBTEXTCLASSIFIER_UTILS_BASE_INTEGRAL_TYPES_H_ 20 #define LIBTEXTCLASSIFIER_UTILS_BASE_INTEGRAL_TYPES_H_ 21 22 #include "utils/base/config.h" 23 24 namespace libtextclassifier3 { 25 26 typedef unsigned int uint; 27 typedef unsigned int uint32; 28 typedef unsigned long long uint64; 29 30 #ifndef SWIG 31 typedef int int32; 32 typedef unsigned char uint8; // NOLINT 33 typedef signed char int8; // NOLINT 34 typedef unsigned short uint16; // NOLINT 35 typedef signed short int16; // NOLINT 36 37 // A type to represent a Unicode code-point value. As of Unicode 4.0, 38 // such values require up to 21 bits. 39 // (For type-checking on pointers, make this explicitly signed, 40 // and it should always be the signed version of whatever int32 is.) 41 typedef signed int char32; 42 #endif // SWIG 43 44 #ifdef COMPILER_MSVC 45 typedef __int64 int64; 46 #else 47 typedef long long int64; // NOLINT 48 #endif // COMPILER_MSVC 49 50 // Some compile-time assertions that our new types have the intended size. 51 // static_assert exists only since C++11, so we need an ifdef. 52 #ifdef LANG_CXX11 53 static_assert(sizeof(int) == 4, "Our typedefs depend on int being 32 bits"); 54 static_assert(sizeof(uint32) == 4, "wrong size"); 55 static_assert(sizeof(int32) == 4, "wrong size"); 56 static_assert(sizeof(uint8) == 1, "wrong size"); 57 static_assert(sizeof(int8) == 1, "wrong size"); 58 static_assert(sizeof(uint16) == 2, "wrong size"); 59 static_assert(sizeof(int16) == 2, "wrong size"); 60 static_assert(sizeof(char32) == 4, "wrong size"); 61 static_assert(sizeof(int64) == 8, "wrong size"); 62 #endif // LANG_CXX11 63 64 // There are still some requirements that we build these headers in 65 // C-compatibility mode. Unfortunately, -Wall doesn't like c-style 66 // casts, and C doesn't know how to read braced-initialization for 67 // integers. 68 #if defined(__cplusplus) 69 const uint16 kuint16max{0xFFFF}; 70 const int16 kint16max{0x7FFF}; 71 const int16 kint16min{~0x7FFF}; 72 const uint32 kuint32max{0xFFFFFFFF}; 73 const int32 kint32max{0x7FFFFFFF}; 74 #else // not __cplusplus, this branch exists only for C-compat 75 static const uint16 kuint16max = ((uint16)0xFFFF); 76 static const int16 kint16min = ((int16)~0x7FFF); 77 static const int16 kint16max = ((int16)0x7FFF); 78 static const uint32 kuint32max = ((uint32)0xFFFFFFFF); 79 static const int32 kint32max = ((int32)0x7FFFFFFF); 80 #endif // __cplusplus 81 82 } // namespace libtextclassifier3 83 84 #endif // LIBTEXTCLASSIFIER_UTILS_BASE_INTEGRAL_TYPES_H_ 85