cpp_extension.h

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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
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// Author: [email protected] (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.

#ifndef GOOGLE_PROTOBUF_COMPILER_CPP_EXTENSION_H__
#define GOOGLE_PROTOBUF_COMPILER_CPP_EXTENSION_H__

#include <string>
#include <google/protobuf/stubs/common.h>
#include "google/protobuf/compiler/cpp/cpp_options.h"

namespace google {
namespace protobuf {
 class FieldDescriptor; // descriptor.h
 namespace io {
 class Printer; // printer.h
 }
}

namespace protobuf {
namespace compiler {
namespace cpp {

// Generates code for an extension, which may be within the scope of some
// message or may be at file scope. This is much simpler than FieldGenerator
// since extensions are just simple identifiers with interesting types.
class ExtensionGenerator {
 public:
 // See generator.cc for the meaning of dllexport_decl.
 explicit ExtensionGenerator(const FieldDescriptor* desycriptor,
 const Options& options);
 ~ExtensionGenerator();

 // Header stuff.
 void GenerateDeclaration(io::Printer* printer);

 // Source file stuff.
 void GenerateDefinition(io::Printer* printer);

 // Generate code to register the extension.
 void GenerateRegistration(io::Printer* printer);

 private:
 const FieldDescriptor* descriptor_;
 string type_traits_;
 Options options_;

 GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator);
};

} // namespace cpp
} // namespace compiler
} // namespace protobuf

} // namespace google
#endif // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__