java_extension.h revision fbaaef999ba563838ebd00874ed8a1c01fbf286d 
1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc.  All rights reserved.
3// http://code.google.com/p/protobuf/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
9//     * Redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer.
11//     * Redistributions in binary form must reproduce the above
12// copyright notice, this list of conditions and the following disclaimer
13// in the documentation and/or other materials provided with the
14// distribution.
15//     * Neither the name of Google Inc. nor the names of its
16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// Author: kenton@google.com (Kenton Varda)
32//  Based on original Protocol Buffers design by
33//  Sanjay Ghemawat, Jeff Dean, and others.
34
35#ifndef GOOGLE_PROTOBUF_COMPILER_JAVA_EXTENSION_H__
36#define GOOGLE_PROTOBUF_COMPILER_JAVA_EXTENSION_H__
37
38#include <string>
39
40#include <google/protobuf/stubs/common.h>
41
42namespace google {
43namespace protobuf {
44  class FieldDescriptor;       // descriptor.h
45  namespace io {
46    class Printer;             // printer.h
47  }
48}
49
50namespace protobuf {
51namespace compiler {
52namespace java {
53
54// Generates code for an extension, which may be within the scope of some
55// message or may be at file scope.  This is much simpler than FieldGenerator
56// since extensions are just simple identifiers with interesting types.
57class ExtensionGenerator {
58 public:
59  explicit ExtensionGenerator(const FieldDescriptor* descriptor);
60  ~ExtensionGenerator();
61
62  void Generate(io::Printer* printer);
63  void GenerateInitializationCode(io::Printer* printer);
64  void GenerateRegistrationCode(io::Printer* printer);
65
66 private:
67  const FieldDescriptor* descriptor_;
68  string scope_;
69  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator);
70};
71
72}  // namespace java
73}  // namespace compiler
74}  // namespace protobuf
75
76}  // namespace google
77#endif  // GOOGLE_PROTOBUF_COMPILER_JAVA_MESSAGE_H__
78