1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc. All rights reserved.
3// https://developers.google.com/protocol-buffers/
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_CPP_EXTENSION_H__
36#define GOOGLE_PROTOBUF_COMPILER_CPP_EXTENSION_H__
37
38#include <map>
39#include <string>
40
41#include <google/protobuf/stubs/common.h>
42#include <google/protobuf/compiler/cpp/options.h>
43
44namespace google {
45namespace protobuf {
46class FieldDescriptor; // descriptor.h
47namespace io {
48class Printer; // printer.h
49}
50} // namespace protobuf
51} // namespace google
52
53namespace google {
54namespace protobuf {
55namespace compiler {
56namespace cpp {
57
58class MessageSCCAnalyzer;
59
60// Generates code for an extension, which may be within the scope of some
61// message or may be at file scope. This is much simpler than FieldGenerator
62// since extensions are just simple identifiers with interesting types.
63class ExtensionGenerator {
64 public:
65 // See generator.cc for the meaning of dllexport_decl.
66 explicit ExtensionGenerator(const FieldDescriptor* descriptor,
67 const Options& options,
68 MessageSCCAnalyzer* scc_analyzer);
69 ~ExtensionGenerator();
70
71 // Header stuff.
72 void GenerateDeclaration(io::Printer* printer) const;
73
74 // Source file stuff.
75 void GenerateDefinition(io::Printer* printer);
76
77 bool IsScoped() const;
78
79 private:
80 const FieldDescriptor* descriptor_;
81 std::string type_traits_;
82 Options options_;
83 MessageSCCAnalyzer* scc_analyzer_;
84
85 std::map<std::string, std::string> variables_;
86
87 GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator);
88};
89
90} // namespace cpp
91} // namespace compiler
92} // namespace protobuf
93} // namespace google
94
95#endif // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
96