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
|
// 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.
#include "google/protobuf/compiler/retention.h"
#include <memory>
#include <string>
#include <vector>
#include "google/protobuf/descriptor.h"
#include "google/protobuf/dynamic_message.h"
namespace google {
namespace protobuf {
namespace compiler {
namespace {
// Recursively strips any options with source retention from the message.
void StripMessage(Message& m) {
const Reflection* reflection = m.GetReflection();
std::vector<const FieldDescriptor*> fields;
reflection->ListFields(m, &fields);
for (const FieldDescriptor* field : fields) {
if (field->options().retention() == FieldOptions::RETENTION_SOURCE) {
reflection->ClearField(&m, field);
} else if (field->type() == FieldDescriptor::TYPE_MESSAGE) {
if (field->is_repeated()) {
int field_size = reflection->FieldSize(m, field);
for (int i = 0; i < field_size; ++i) {
StripMessage(*reflection->MutableRepeatedMessage(&m, field, i));
}
} else {
StripMessage(*reflection->MutableMessage(&m, field));
}
}
}
}
} // namespace
FileDescriptorProto StripSourceRetentionOptions(const FileDescriptor& file) {
FileDescriptorProto file_proto;
file.CopyTo(&file_proto);
// We need to look up the descriptor in file.pool() so that we can get a
// descriptor which knows about any custom options that were used in the
// .proto file.
const Descriptor* descriptor =
file.pool()->FindMessageTypeByName(FileDescriptorProto().GetTypeName());
if (descriptor == nullptr) {
// If the pool does not contain the descriptor for FileDescriptorProto,
// then this proto file does not transitively depend on descriptor.proto,
// in which case we know there are no custom options to worry about.
StripMessage(file_proto);
} else {
// The options message may have custom options set on it, and these would
// ordinarily appear as unknown fields since they are not linked into
// protoc. Using a dynamic message allows us to see these custom options.
// To convert back and forth between the generated type and the dynamic
// message, we have to serialize one and parse that into the other.
DynamicMessageFactory factory;
std::unique_ptr<Message> dynamic_message(
factory.GetPrototype(descriptor)->New());
TProtoStringType serialized;
Y_ABSL_CHECK(file_proto.SerializeToString(&serialized));
Y_ABSL_CHECK(dynamic_message->ParseFromString(serialized));
StripMessage(*dynamic_message);
Y_ABSL_CHECK(dynamic_message->SerializeToString(&serialized));
Y_ABSL_CHECK(file_proto.ParseFromString(serialized));
}
return file_proto;
}
} // namespace compiler
} // namespace protobuf
} // namespace google
|
