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protobuf / src / google / protobuf / compiler / java / java_field.h

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// 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
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// 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.

#ifndef GOOGLE_PROTOBUF_COMPILER_JAVA_FIELD_H__
#define GOOGLE_PROTOBUF_COMPILER_JAVA_FIELD_H__

#include <string>
#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 java {

class FieldGenerator {
 public:
  FieldGenerator() {}
  virtual ~FieldGenerator();

  virtual int GetNumBitsForMessage() const = 0;
  virtual int GetNumBitsForBuilder() const = 0;
  virtual void GenerateInterfaceMembers(io::Printer* printer) const = 0;
  virtual void GenerateMembers(io::Printer* printer) const = 0;
  virtual void GenerateBuilderMembers(io::Printer* printer) const = 0;
  virtual void GenerateInitializationCode(io::Printer* printer) const = 0;
  virtual void GenerateBuilderClearCode(io::Printer* printer) const = 0;
  virtual void GenerateMergingCode(io::Printer* printer) const = 0;
  virtual void GenerateBuildingCode(io::Printer* printer) const = 0;
  virtual void GenerateParsingCode(io::Printer* printer) const = 0;
  virtual void GenerateParsingCodeFromPacked(io::Printer* printer) const;
  virtual void GenerateSerializationCode(io::Printer* printer) const = 0;
  virtual void GenerateSerializedSizeCode(io::Printer* printer) const = 0;
  virtual void GenerateFieldBuilderInitializationCode(io::Printer* printer)
      const = 0;

  virtual void GenerateEqualsCode(io::Printer* printer) const = 0;
  virtual void GenerateHashCode(io::Printer* printer) const = 0;

  virtual string GetBoxedType() const = 0;

 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;
  const FieldGenerator& get_extension(int index) const;

 private:
  const Descriptor* descriptor_;
  scoped_array<scoped_ptr<FieldGenerator> > field_generators_;
  scoped_array<scoped_ptr<FieldGenerator> > extension_generators_;

  static FieldGenerator* MakeGenerator(const FieldDescriptor* field,
      int messageBitIndex, int builderBitIndex);

  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldGeneratorMap);
};

}  // namespace java
}  // namespace compiler
}  // namespace protobuf

}  // namespace google
#endif  // GOOGLE_PROTOBUF_COMPILER_JAVA_FIELD_H__