1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 // Author: kenton@google.com (Kenton Varda) 32 // Based on original Protocol Buffers design by 33 // Sanjay Ghemawat, Jeff Dean, and others. 34 35 #ifndef GOOGLE_PROTOBUF_COMPILER_CPP_EXTENSION_H__ 36 #define GOOGLE_PROTOBUF_COMPILER_CPP_EXTENSION_H__ 37 38 #include <map> 39 #include <string> 40 41 #include <google/protobuf/stubs/common.h> 42 #include <google/protobuf/compiler/cpp/cpp_options.h> 43 44 namespace google { 45 namespace protobuf { 46 class FieldDescriptor; // descriptor.h 47 namespace io { 48 class Printer; // printer.h 49 } 50 } // namespace protobuf 51 } // namespace google 52 53 namespace google { 54 namespace protobuf { 55 namespace compiler { 56 namespace cpp { 57 58 // Generates code for an extension, which may be within the scope of some 59 // message or may be at file scope. This is much simpler than FieldGenerator 60 // since extensions are just simple identifiers with interesting types. 61 class ExtensionGenerator { 62 public: 63 // See generator.cc for the meaning of dllexport_decl. 64 explicit ExtensionGenerator(const FieldDescriptor* descriptor, 65 const Options& options); 66 ~ExtensionGenerator(); 67 68 // Header stuff. 69 void GenerateDeclaration(io::Printer* printer) const; 70 71 // Source file stuff. 72 void GenerateDefinition(io::Printer* printer); 73 74 bool IsScoped() const; 75 76 private: 77 const FieldDescriptor* descriptor_; 78 std::string type_traits_; 79 Options options_; 80 81 std::map<std::string, std::string> variables_; 82 83 GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator); 84 }; 85 86 } // namespace cpp 87 } // namespace compiler 88 } // namespace protobuf 89 } // namespace google 90 91 #endif // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__ 92