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_ENUM_H__
36#define GOOGLE_PROTOBUF_COMPILER_JAVA_ENUM_H__
37
38#include <string>
39#include <vector>
40
41#include <google/protobuf/compiler/javanano/javanano_params.h>
42#include <google/protobuf/descriptor.h>
43
44namespace google {
45namespace protobuf {
46  namespace io {
47    class Printer;             // printer.h
48  }
49}
50
51namespace protobuf {
52namespace compiler {
53namespace javanano {
54
55class EnumGenerator {
56 public:
57  explicit EnumGenerator(const EnumDescriptor* descriptor, const Params& params);
58  ~EnumGenerator();
59
60  void Generate(io::Printer* printer);
61
62 private:
63  const Params& params_;
64  const EnumDescriptor* descriptor_;
65
66  // The proto language allows multiple enum constants to have the same numeric
67  // value.  Java, however, does not allow multiple enum constants to be
68  // considered equivalent.  We treat the first defined constant for any
69  // given numeric value as "canonical" and the rest as aliases of that
70  // canonical value.
71  vector<const EnumValueDescriptor*> canonical_values_;
72
73  struct Alias {
74    const EnumValueDescriptor* value;
75    const EnumValueDescriptor* canonical_value;
76  };
77  vector<Alias> aliases_;
78
79  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumGenerator);
80};
81
82}  // namespace javanano
83}  // namespace compiler
84}  // namespace protobuf
85
86}  // namespace google
87#endif  // GOOGLE_PROTOBUF_COMPILER_JAVA_ENUM_H__
88