1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// 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
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Author: kenton@google.com (Kenton Varda)
#include <google/protobuf/compiler/plugin.h>
#include <iostream>
#include <set>
#ifdef _WIN32
#include <fcntl.h>
#else
#include <unistd.h>
#endif
#include <google/protobuf/stubs/logging.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/compiler/plugin.pb.h>
#include <google/protobuf/compiler/code_generator.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/io/io_win32.h>
namespace google {
namespace protobuf {
namespace compiler {
#if defined(_WIN32)
// DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import
// them like we do below.
using google::protobuf::io::win32::setmode;
#endif
class GeneratorResponseContext : public GeneratorContext {
public:
GeneratorResponseContext(
const Version& compiler_version, CodeGeneratorResponse* response,
const std::vector<const FileDescriptor*>& parsed_files)
: compiler_version_(compiler_version),
response_(response),
parsed_files_(parsed_files) {}
virtual ~GeneratorResponseContext() {}
// implements GeneratorContext --------------------------------------
io::ZeroCopyOutputStream* Open(const TProtoStringType& filename) override {
CodeGeneratorResponse::File* file = response_->add_file();
file->set_name(filename);
return new io::StringOutputStream(file->mutable_content());
}
io::ZeroCopyOutputStream* OpenForInsert(
const TProtoStringType& filename,
const TProtoStringType& insertion_point) override {
CodeGeneratorResponse::File* file = response_->add_file();
file->set_name(filename);
file->set_insertion_point(insertion_point);
return new io::StringOutputStream(file->mutable_content());
}
io::ZeroCopyOutputStream* OpenForInsertWithGeneratedCodeInfo(
const TProtoStringType& filename, const TProtoStringType& insertion_point,
const google::protobuf::GeneratedCodeInfo& info) override {
CodeGeneratorResponse::File* file = response_->add_file();
file->set_name(filename);
file->set_insertion_point(insertion_point);
*file->mutable_generated_code_info() = info;
return new io::StringOutputStream(file->mutable_content());
}
void ListParsedFiles(std::vector<const FileDescriptor*>* output) override {
*output = parsed_files_;
}
void GetCompilerVersion(Version* version) const override {
*version = compiler_version_;
}
private:
Version compiler_version_;
CodeGeneratorResponse* response_;
const std::vector<const FileDescriptor*>& parsed_files_;
};
bool GenerateCode(const CodeGeneratorRequest& request,
const CodeGenerator& generator,
CodeGeneratorResponse* response, TProtoStringType* error_msg) {
DescriptorPool pool;
for (int i = 0; i < request.proto_file_size(); i++) {
const FileDescriptor* file = pool.BuildFile(request.proto_file(i));
if (file == NULL) {
// BuildFile() already wrote an error message.
return false;
}
}
std::vector<const FileDescriptor*> parsed_files;
for (int i = 0; i < request.file_to_generate_size(); i++) {
parsed_files.push_back(pool.FindFileByName(request.file_to_generate(i)));
if (parsed_files.back() == NULL) {
*error_msg =
"protoc asked plugin to generate a file but "
"did not provide a descriptor for the file: " +
request.file_to_generate(i);
return false;
}
}
GeneratorResponseContext context(request.compiler_version(), response,
parsed_files);
TProtoStringType error;
bool succeeded = generator.GenerateAll(parsed_files, request.parameter(),
&context, &error);
response->set_supported_features(generator.GetSupportedFeatures());
if (!succeeded && error.empty()) {
error =
"Code generator returned false but provided no error "
"description.";
}
if (!error.empty()) {
response->set_error(error);
}
return true;
}
int PluginMain(int argc, char* argv[], const CodeGenerator* generator) {
if (argc > 1) {
std::cerr << argv[0] << ": Unknown option: " << argv[1] << std::endl;
return 1;
}
#ifdef _WIN32
setmode(STDIN_FILENO, _O_BINARY);
setmode(STDOUT_FILENO, _O_BINARY);
#endif
CodeGeneratorRequest request;
if (!request.ParseFromFileDescriptor(STDIN_FILENO)) {
std::cerr << argv[0] << ": protoc sent unparseable request to plugin."
<< std::endl;
return 1;
}
TProtoStringType error_msg;
CodeGeneratorResponse response;
if (GenerateCode(request, *generator, &response, &error_msg)) {
if (!response.SerializeToFileDescriptor(STDOUT_FILENO)) {
std::cerr << argv[0] << ": Error writing to stdout." << std::endl;
return 1;
}
} else {
if (!error_msg.empty()) {
std::cerr << argv[0] << ": " << error_msg << std::endl;
}
return 1;
}
return 0;
}
} // namespace compiler
} // namespace protobuf
} // namespace google
|
