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132 lines
4.9 KiB
C++
132 lines
4.9 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <thirdparty/protobuf/compiler/python/helpers.h>
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#include <algorithm>
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#include <thirdparty/protobuf/stubs/strutil.h>
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#include <thirdparty/protobuf/compiler/code_generator.h>
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#include <thirdparty/protobuf/descriptor.h>
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#include <thirdparty/protobuf/descriptor.pb.h>
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namespace google {
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namespace protobuf {
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namespace compiler {
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namespace python {
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// Returns the Python module name expected for a given .proto filename.
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std::string ModuleName(const std::string& filename) {
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std::string basename = StripProto(filename);
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ReplaceCharacters(&basename, "-", '_');
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ReplaceCharacters(&basename, "/", '.');
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return basename + "_pb2";
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}
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std::string StrippedModuleName(const std::string& filename) {
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std::string module_name = ModuleName(filename);
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return module_name;
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}
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// Keywords reserved by the Python language.
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const char* const kKeywords[] = {
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"False", "None", "True", "and", "as", "assert",
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"async", "await", "break", "class", "continue", "def",
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"del", "elif", "else", "except", "finally", "for",
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"from", "global", "if", "import", "in", "is",
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"lambda", "nonlocal", "not", "or", "pass", "raise",
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"return", "try", "while", "with", "yield",
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};
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const char* const* kKeywordsEnd =
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kKeywords + (sizeof(kKeywords) / sizeof(kKeywords[0]));
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bool ContainsPythonKeyword(const std::string& module_name) {
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std::vector<std::string> tokens = Split(module_name, ".");
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for (int i = 0; i < static_cast<int>(tokens.size()); ++i) {
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if (std::find(kKeywords, kKeywordsEnd, tokens[i]) != kKeywordsEnd) {
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return true;
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}
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}
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return false;
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}
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bool IsPythonKeyword(const std::string& name) {
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return (std::find(kKeywords, kKeywordsEnd, name) != kKeywordsEnd);
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}
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std::string ResolveKeyword(const std::string& name) {
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if (IsPythonKeyword(name)) {
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return "globals()['" + name + "']";
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}
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return name;
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}
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std::string GetFileName(const FileDescriptor* file_des,
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const std::string& suffix) {
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std::string module_name = ModuleName(file_des->name());
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std::string filename = module_name;
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ReplaceCharacters(&filename, ".", '/');
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filename += suffix;
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return filename;
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}
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bool HasGenericServices(const FileDescriptor* file) {
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return file->service_count() > 0 && file->options().py_generic_services();
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}
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template <typename DescriptorT>
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std::string NamePrefixedWithNestedTypes(const DescriptorT& descriptor,
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const std::string& separator) {
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std::string name = descriptor.name();
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const Descriptor* parent = descriptor.containing_type();
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if (parent != nullptr) {
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std::string prefix = NamePrefixedWithNestedTypes(*parent, separator);
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if (separator == "." && IsPythonKeyword(name)) {
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return "getattr(" + prefix + ", '" + name + "')";
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} else {
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return prefix + separator + name;
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}
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}
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if (separator == ".") {
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name = ResolveKeyword(name);
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}
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return name;
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}
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template std::string NamePrefixedWithNestedTypes<Descriptor>(
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const Descriptor& descriptor, const std::string& separator);
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template std::string NamePrefixedWithNestedTypes<EnumDescriptor>(
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const EnumDescriptor& descriptor, const std::string& separator);
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} // namespace python
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} // namespace compiler
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} // namespace protobuf
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} // namespace google
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