code_generator.cc

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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.
 
#include <google/protobuf/compiler/code_generator.h>
 
#include <google/protobuf/stubs/logging.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/compiler/plugin.pb.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/stubs/strutil.h>
 
namespace google {
namespace protobuf {
namespace compiler {
 
CodeGenerator::~CodeGenerator() {}
 
bool CodeGenerator::GenerateAll(const std::vector<const FileDescriptor*>& files,
                                const std::string& parameter,
                                GeneratorContext* generator_context,
                                std::string* error) const {
  // Default implemenation is just to call the per file method, and prefix any
  // error string with the file to provide context.
  bool succeeded = true;
  for (int i = 0; i < files.size(); i++) {
    const FileDescriptor* file = files[i];
    succeeded = Generate(file, parameter, generator_context, error);
    if (!succeeded && error && error->empty()) {
      *error =
          "Code generator returned false but provided no error "
          "description.";
    }
    if (error && !error->empty()) {
      *error = file->name() + ": " + *error;
      break;
    }
    if (!succeeded) {
      break;
    }
  }
  return succeeded;
}
 
GeneratorContext::~GeneratorContext() {}
 
io::ZeroCopyOutputStream* GeneratorContext::OpenForAppend(
    const std::string& filename) {
  return NULL;
}
 
io::ZeroCopyOutputStream* GeneratorContext::OpenForInsert(
    const std::string& filename, const std::string& insertion_point) {
  GOOGLE_LOG(FATAL) << "This GeneratorContext does not support insertion.";
  return NULL;  // make compiler happy
}
 
void GeneratorContext::ListParsedFiles(
    std::vector<const FileDescriptor*>* output) {
  GOOGLE_LOG(FATAL) << "This GeneratorContext does not support ListParsedFiles";
}
 
void GeneratorContext::GetCompilerVersion(Version* version) const {
  version->set_major(GOOGLE_PROTOBUF_VERSION / 1000000);
  version->set_minor(GOOGLE_PROTOBUF_VERSION / 1000 % 1000);
  version->set_patch(GOOGLE_PROTOBUF_VERSION % 1000);
  version->set_suffix(GOOGLE_PROTOBUF_VERSION_SUFFIX);
}
 
// Parses a set of comma-delimited name/value pairs.
void ParseGeneratorParameter(
    const std::string& text,
    std::vector<std::pair<std::string, std::string> >* output) {
  std::vector<std::string> parts = Split(text, ",", true);
 
  for (int i = 0; i < parts.size(); i++) {
    std::string::size_type equals_pos = parts[i].find_first_of('=');
    std::pair<std::string, std::string> value;
    if (equals_pos == std::string::npos) {
      value.first = parts[i];
      value.second = "";
    } else {
      value.first = parts[i].substr(0, equals_pos);
      value.second = parts[i].substr(equals_pos + 1);
    }
    output->push_back(value);
  }
}
 
}  // namespace compiler
}  // namespace protobuf
}  // namespace google