cpp_enum.h

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// Protocol Buffers - Google's data interchange format
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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_ENUM_H__
#define GOOGLE_PROTOBUF_COMPILER_CPP_ENUM_H__
 
#include <map>
#include <set>
#include <string>
#include <google/protobuf/compiler/cpp/cpp_options.h>
#include <google/protobuf/descriptor.h>
 
namespace google {
namespace protobuf {
namespace io {
class Printer;  // printer.h
}
}  // namespace protobuf
}  // namespace google
 
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
 
class EnumGenerator {
 public:
  // See generator.cc for the meaning of dllexport_decl.
  EnumGenerator(const EnumDescriptor* descriptor,
                const std::map<std::string, std::string>& vars,
                const Options& options);
  ~EnumGenerator();
 
  // Generate header code defining the enum.  This code should be placed
  // within the enum's package namespace, but NOT within any class, even for
  // nested enums.
  void GenerateDefinition(io::Printer* printer);
 
  // Generate specialization of GetEnumDescriptor<MyEnum>().
  // Precondition: in ::google::protobuf namespace.
  void GenerateGetEnumDescriptorSpecializations(io::Printer* printer);
 
  // For enums nested within a message, generate code to import all the enum's
  // symbols (e.g. the enum type name, all its values, etc.) into the class's
  // namespace.  This should be placed inside the class definition in the
  // header.
  void GenerateSymbolImports(io::Printer* printer) const;
 
  // Source file stuff.
 
  // Generate non-inline methods related to the enum, such as IsValidValue().
  // Goes in the .cc file. EnumDescriptors are stored in an array, idx is
  // the index in this array that corresponds with this enum.
  void GenerateMethods(int idx, io::Printer* printer);
 
 private:
  const EnumDescriptor* descriptor_;
  const std::string classname_;
  const Options& options_;
  // whether to generate the *_ARRAYSIZE constant.
  const bool generate_array_size_;
 
  std::map<std::string, std::string> variables_;
 
  friend class FileGenerator;
  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumGenerator);
};
 
}  // namespace cpp
}  // namespace compiler
}  // namespace protobuf
}  // namespace google
 
#endif  // GOOGLE_PROTOBUF_COMPILER_CPP_ENUM_H__