text: // Protocol Buffers - Google's data interchange format
  // Copyright 2008 Google Inc.  All rights reserved.
  // http://code.google.com/p/protobuf/
  //
  // 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.
  
  // Author: kenton@google.com (Kenton Varda)
  //  Based on original Protocol Buffers design by
  //  Sanjay Ghemawat, Jeff Dean, and others.
  
  // Copyright (c) 2008-2013, Dave Benson.  All rights reserved.
  //
  // 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.
  //
  // 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.
  
  // Modified to implement C code by Dave Benson.
  
  #ifndef GOOGLE_PROTOBUF_COMPILER_C_FIELD_H__
  #define GOOGLE_PROTOBUF_COMPILER_C_FIELD_H__
  
  #include <google/protobuf/stubs/common.h>
  #include <google/protobuf/descriptor.h>
  
  namespace google {
  namespace protobuf {
    namespace io {
      class Printer;             // printer.h
    }
  }
  
  namespace protobuf {
  namespace compiler {
  namespace c {
  
  class FieldGenerator {
   public:
    explicit FieldGenerator(const FieldDescriptor *descriptor) : descriptor_(descriptor) {}
    virtual ~FieldGenerator();
  
    // Generate definitions to be included in the structure.
    virtual void GenerateStructMembers(io::Printer* printer) const = 0;
  
    // Generate a static initializer for this field.
    virtual void GenerateDescriptorInitializer(io::Printer* printer) const = 0;
  
    virtual void GenerateDefaultValueDeclarations(io::Printer* printer) const { }
    virtual void GenerateDefaultValueImplementations(io::Printer* printer) const { }
    virtual string GetDefaultValue() const = 0;
  
    // Generate members to initialize this field from a static initializer
    virtual void GenerateStaticInit(io::Printer* printer) const = 0;
  
  
   protected:
    void GenerateDescriptorInitializerGeneric(io::Printer* printer,
                                              bool optional_uses_has,
                                              const string &type_macro,
                                              const string &descriptor_addr) const;
    const FieldDescriptor *descriptor_;
  
   private:
    GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldGenerator);
  };
  
  // Convenience class which constructs FieldGenerators for a Descriptor.
  class FieldGeneratorMap {
   public:
    explicit FieldGeneratorMap(const Descriptor* descriptor);
    ~FieldGeneratorMap();
  
    const FieldGenerator& get(const FieldDescriptor* field) const;
  
   private:
    const Descriptor* descriptor_;
    scoped_array<scoped_ptr<FieldGenerator> > field_generators_;
  
    static FieldGenerator* MakeGenerator(const FieldDescriptor* field);
  
    GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldGeneratorMap);
  };
  
  }  // namespace c
  }  // namespace compiler
  }  // namespace protobuf
  
  }  // namespace google
  #endif  // GOOGLE_PROTOBUF_COMPILER_C_FIELD_H__
  