text: // Protocol Buffers - Google's data interchange format
  // Copyright 2008 Google Inc.  All rights reserved.
  // https://developers.google.com/protocol-buffers/
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //     * Neither the name of Google Inc. nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #include <sstream>
  
  #include <google/protobuf/compiler/code_generator.h>
  #include <google/protobuf/compiler/plugin.h>
  #include <google/protobuf/descriptor.h>
  #include <google/protobuf/descriptor.pb.h>
  #include <google/protobuf/io/printer.h>
  #include <google/protobuf/io/zero_copy_stream.h>
  #include <google/protobuf/stubs/strutil.h>
  
  #include <google/protobuf/compiler/csharp/csharp_generator.h>
  #include <google/protobuf/compiler/csharp/csharp_helpers.h>
  #include <google/protobuf/compiler/csharp/csharp_names.h>
  #include <google/protobuf/compiler/csharp/csharp_options.h>
  #include <google/protobuf/compiler/csharp/csharp_reflection_class.h>
  
  namespace google {
  namespace protobuf {
  namespace compiler {
  namespace csharp {
  
  void GenerateFile(const google::protobuf::FileDescriptor* file,
                    io::Printer* printer,
                    const Options* options) {
    ReflectionClassGenerator reflectionClassGenerator(file, options);
    reflectionClassGenerator.Generate(printer);
  }
  
  bool Generator::Generate(
      const FileDescriptor* file,
      const string& parameter,
      GeneratorContext* generator_context,
      string* error) const {
  
    std::vector<std::pair<string, string> > options;
    ParseGeneratorParameter(parameter, &options);
  
    // We only support proto3 - but we make an exception for descriptor.proto. 
    if (file->syntax() != FileDescriptor::SYNTAX_PROTO3 && !IsDescriptorProto(file)) {
      *error = "C# code generation only supports proto3 syntax"; 
      return false;
    } 
  
    struct Options cli_options;
  
    for (int i = 0; i < options.size(); i++) {
      if (options[i].first == "file_extension") {
        cli_options.file_extension = options[i].second;
      } else if (options[i].first == "base_namespace") {
        cli_options.base_namespace = options[i].second;
        cli_options.base_namespace_specified = true;
      } else if (options[i].first == "internal_access") {
        cli_options.internal_access = true;
      } else if (options[i].first == "serializable") {
        cli_options.serializable = true;
      } else {
        *error = "Unknown generator option: " + options[i].first;
        return false;
      }
    }
  
    string filename_error = "";
    std::string filename = GetOutputFile(file,
        cli_options.file_extension,
        cli_options.base_namespace_specified,
        cli_options.base_namespace,
        &filename_error);
  
    if (filename.empty()) {
      *error = filename_error;
      return false;
    }
    std::unique_ptr<io::ZeroCopyOutputStream> output(
        generator_context->Open(filename));
    io::Printer printer(output.get(), '$');
  
    GenerateFile(file, &printer, &cli_options);
  
    return true;
  }
  
  }  // namespace csharp
  }  // namespace compiler
  }  // namespace protobuf
  }  // namespace google
  