protobuf/src/google/protobuf/compiler/cpp/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: kenton@google.com (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 <map>
#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 google
 
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
 
class MessageSCCAnalyzer;
 
// 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* descriptor,
                              const Options& options,
                              MessageSCCAnalyzer* scc_analyzer);
  ~ExtensionGenerator();
 
  // Header stuff.
  void GenerateDeclaration(io::Printer* printer) const;
 
  // Source file stuff.
  void GenerateDefinition(io::Printer* printer);
 
  bool IsScoped() const;
 
 private:
  const FieldDescriptor* descriptor_;
  std::string type_traits_;
  Options options_;
  MessageSCCAnalyzer* scc_analyzer_;
 
  std::map<std::string, std::string> variables_;
 
  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator);
};
 
}  // namespace cpp
}  // namespace compiler
}  // namespace protobuf
}  // namespace google
 
#endif  // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__