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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 : #include <google/protobuf/compiler/cpp/cpp_generator.h>
36 :
37 : #include <vector>
38 : #include <memory>
39 : #ifndef _SHARED_PTR_H
40 : #include <google/protobuf/stubs/shared_ptr.h>
41 : #endif
42 : #include <utility>
43 :
44 : #include <google/protobuf/compiler/cpp/cpp_file.h>
45 : #include <google/protobuf/compiler/cpp/cpp_helpers.h>
46 : #include <google/protobuf/io/printer.h>
47 : #include <google/protobuf/io/zero_copy_stream.h>
48 : #include <google/protobuf/descriptor.pb.h>
49 :
50 : namespace google {
51 : namespace protobuf {
52 : namespace compiler {
53 : namespace cpp {
54 :
55 34 : CppGenerator::CppGenerator() {}
56 17 : CppGenerator::~CppGenerator() {}
57 :
58 98 : bool CppGenerator::Generate(const FileDescriptor* file,
59 : const string& parameter,
60 : GeneratorContext* generator_context,
61 : string* error) const {
62 : vector<pair<string, string> > options;
63 49 : ParseGeneratorParameter(parameter, &options);
64 :
65 : // -----------------------------------------------------------------
66 : // parse generator options
67 :
68 : // TODO(kenton): If we ever have more options, we may want to create a
69 : // class that encapsulates them which we can pass down to all the
70 : // generator classes. Currently we pass dllexport_decl down to all of
71 : // them via the constructors, but we don't want to have to add another
72 : // constructor parameter for every option.
73 :
74 : // If the dllexport_decl option is passed to the compiler, we need to write
75 : // it in front of every symbol that should be exported if this .proto is
76 : // compiled into a Windows DLL. E.g., if the user invokes the protocol
77 : // compiler as:
78 : // protoc --cpp_out=dllexport_decl=FOO_EXPORT:outdir foo.proto
79 : // then we'll define classes like this:
80 : // class FOO_EXPORT Foo {
81 : // ...
82 : // }
83 : // FOO_EXPORT is a macro which should expand to __declspec(dllexport) or
84 : // __declspec(dllimport) depending on what is being compiled.
85 : //
86 : Options file_options;
87 :
88 98 : for (int i = 0; i < options.size(); i++) {
89 0 : if (options[i].first == "dllexport_decl") {
90 0 : file_options.dllexport_decl = options[i].second;
91 0 : } else if (options[i].first == "safe_boundary_check") {
92 0 : file_options.safe_boundary_check = true;
93 : } else {
94 0 : *error = "Unknown generator option: " + options[i].first;
95 0 : return false;
96 : }
97 : }
98 :
99 : // -----------------------------------------------------------------
100 :
101 :
102 49 : string basename = StripProto(file->name());
103 :
104 98 : FileGenerator file_generator(file, file_options);
105 :
106 : // Generate header(s).
107 49 : if (file_options.proto_h) {
108 : google::protobuf::scoped_ptr<io::ZeroCopyOutputStream> output(
109 0 : generator_context->Open(basename + ".proto.h"));
110 0 : io::Printer printer(output.get(), '$');
111 0 : file_generator.GenerateProtoHeader(&printer);
112 : }
113 :
114 49 : basename.append(".pb");
115 : {
116 : google::protobuf::scoped_ptr<io::ZeroCopyOutputStream> output(
117 98 : generator_context->Open(basename + ".h"));
118 98 : io::Printer printer(output.get(), '$');
119 49 : file_generator.GeneratePBHeader(&printer);
120 : }
121 :
122 : // Generate cc file.
123 : {
124 : google::protobuf::scoped_ptr<io::ZeroCopyOutputStream> output(
125 98 : generator_context->Open(basename + ".cc"));
126 98 : io::Printer printer(output.get(), '$');
127 49 : file_generator.GenerateSource(&printer);
128 : }
129 :
130 49 : return true;
131 : }
132 :
133 : } // namespace cpp
134 : } // namespace compiler
135 : } // namespace protobuf
136 : } // namespace google
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