diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/google/protobuf/compiler/objectivec/objectivec_file.cc | 189 | ||||
-rw-r--r-- | src/google/protobuf/compiler/parser.cc | 1 |
2 files changed, 158 insertions, 32 deletions
diff --git a/src/google/protobuf/compiler/objectivec/objectivec_file.cc b/src/google/protobuf/compiler/objectivec/objectivec_file.cc index 6d889e63..f70d4d5f 100644 --- a/src/google/protobuf/compiler/objectivec/objectivec_file.cc +++ b/src/google/protobuf/compiler/objectivec/objectivec_file.cc @@ -45,6 +45,10 @@ namespace google { namespace protobuf { +namespace compiler { +namespace objectivec { + +namespace { // This is also found in GPBBootstrap.h, and needs to be kept in sync. It // is the version check done to ensure generated code works with the current @@ -53,8 +57,106 @@ const int32 GOOGLE_PROTOBUF_OBJC_GEN_VERSION = 30001; const char* kHeaderExtension = ".pbobjc.h"; -namespace compiler { -namespace objectivec { +// Checks if a message contains any extension definitions (on the message or +// a nested message under it). +bool MessageContainsExtensions(const Descriptor* message) { + if (message->extension_count() > 0) { + return true; + } + for (int i = 0; i < message->nested_type_count(); i++) { + if (MessageContainsExtensions(message->nested_type(i))) { + return true; + } + } + return false; +} + +// Checks if the file contains any extensions definitions (at the root or +// nested under a message). +bool FileContainsExtensions(const FileDescriptor* file) { + if (file->extension_count() > 0) { + return true; + } + for (int i = 0; i < file->message_type_count(); i++) { + if (MessageContainsExtensions(file->message_type(i))) { + return true; + } + } + return false; +} + +// Helper for CollectMinimalFileDepsContainingExtensionsWorker that marks all +// deps as visited and prunes them from the needed files list. +void PruneFileAndDepsMarkingAsVisited( + const FileDescriptor* file, + vector<const FileDescriptor*>* files, + set<const FileDescriptor*>* files_visited) { + vector<const FileDescriptor*>::iterator iter = + std::find(files->begin(), files->end(), file); + if (iter != files->end()) { + files->erase(iter); + } + files_visited->insert(file); + for (int i = 0; i < file->dependency_count(); i++) { + PruneFileAndDepsMarkingAsVisited(file->dependency(i), files, files_visited); + } +} + +// Helper for CollectMinimalFileDepsContainingExtensions. +void CollectMinimalFileDepsContainingExtensionsWorker( + const FileDescriptor* file, + vector<const FileDescriptor*>* files, + set<const FileDescriptor*>* files_visited) { + if (files_visited->find(file) != files_visited->end()) { + return; + } + files_visited->insert(file); + + if (FileContainsExtensions(file)) { + files->push_back(file); + for (int i = 0; i < file->dependency_count(); i++) { + const FileDescriptor* dep = file->dependency(i); + PruneFileAndDepsMarkingAsVisited(dep, files, files_visited); + } + } else { + for (int i = 0; i < file->dependency_count(); i++) { + const FileDescriptor* dep = file->dependency(i); + CollectMinimalFileDepsContainingExtensionsWorker(dep, files, + files_visited); + } + } +} + +// Collect the deps of the given file that contain extensions. This can be used to +// create the chain of roots that need to be wired together. +// +// NOTE: If any changes are made to this and the supporting functions, you will +// need to manually validate what the generated code is for the test files: +// objectivec/Tests/unittest_extension_chain_*.proto +// There are comments about what the expected code should be line and limited +// testing objectivec/Tests/GPBUnittestProtos2.m around compilation (#imports +// specifically). +void CollectMinimalFileDepsContainingExtensions( + const FileDescriptor* file, + vector<const FileDescriptor*>* files) { + set<const FileDescriptor*> files_visited; + for (int i = 0; i < file->dependency_count(); i++) { + const FileDescriptor* dep = file->dependency(i); + CollectMinimalFileDepsContainingExtensionsWorker(dep, files, + &files_visited); + } +} + +bool IsDirectDependency(const FileDescriptor* dep, const FileDescriptor* file) { + for (int i = 0; i < file->dependency_count(); i++) { + if (dep == file->dependency(i)) { + return true; + } + } + return false; +} + +} // namespace FileGenerator::FileGenerator(const FileDescriptor *file, const Options& options) : file_(file), @@ -204,6 +306,9 @@ void FileGenerator::GenerateSource(io::Printer *printer) { // #import the runtime support. PrintFileRuntimePreamble(printer, "GPBProtocolBuffers_RuntimeSupport.h"); + vector<const FileDescriptor*> deps_with_extensions; + CollectMinimalFileDepsContainingExtensions(file_, &deps_with_extensions); + { ImportWriter import_writer( options_.generate_for_named_framework, @@ -227,6 +332,18 @@ void FileGenerator::GenerateSource(io::Printer *printer) { } } + // If any indirect dependency provided extensions, it needs to be directly + // imported so it can get merged into the root's extensions registry. + // See the Note by CollectMinimalFileDepsContainingExtensions before + // changing this. + for (vector<const FileDescriptor *>::iterator iter = + deps_with_extensions.begin(); + iter != deps_with_extensions.end(); ++iter) { + if (!IsDirectDependency(*iter, file_)) { + import_writer.AddFile(*iter, header_extension); + } + } + import_writer.Print(printer); } @@ -263,29 +380,11 @@ void FileGenerator::GenerateSource(io::Printer *printer) { "@implementation $root_class_name$\n\n", "root_class_name", root_class_name_); - // Generate the extension initialization structures for the top level and - // any nested messages. - ostringstream extensions_stringstream; - if (file_->extension_count() + file_->message_type_count() > 0) { - io::OstreamOutputStream extensions_outputstream(&extensions_stringstream); - io::Printer extensions_printer(&extensions_outputstream, '$'); - for (vector<ExtensionGenerator *>::iterator iter = - extension_generators_.begin(); - iter != extension_generators_.end(); ++iter) { - (*iter)->GenerateStaticVariablesInitialization(&extensions_printer); - } - for (vector<MessageGenerator *>::iterator iter = - message_generators_.begin(); - iter != message_generators_.end(); ++iter) { - (*iter)->GenerateStaticVariablesInitialization(&extensions_printer); - } - extensions_stringstream.flush(); - } + const bool file_contains_extensions = FileContainsExtensions(file_); // If there were any extensions or this file has any dependencies, output // a registry to override to create the file specific registry. - const string& extensions_str = extensions_stringstream.str(); - if (extensions_str.length() > 0 || file_->dependency_count() > 0) { + if (file_contains_extensions || !deps_with_extensions.empty()) { printer->Print( "+ (GPBExtensionRegistry*)extensionRegistry {\n" " // This is called by +initialize so there is no need to worry\n" @@ -298,11 +397,20 @@ void FileGenerator::GenerateSource(io::Printer *printer) { printer->Indent(); printer->Indent(); - if (extensions_str.length() > 0) { + if (file_contains_extensions) { printer->Print( "static GPBExtensionDescription descriptions[] = {\n"); printer->Indent(); - printer->Print(extensions_str.c_str()); + for (vector<ExtensionGenerator *>::iterator iter = + extension_generators_.begin(); + iter != extension_generators_.end(); ++iter) { + (*iter)->GenerateStaticVariablesInitialization(printer); + } + for (vector<MessageGenerator *>::iterator iter = + message_generators_.begin(); + iter != message_generators_.end(); ++iter) { + (*iter)->GenerateStaticVariablesInitialization(printer); + } printer->Outdent(); printer->Print( "};\n" @@ -315,11 +423,21 @@ void FileGenerator::GenerateSource(io::Printer *printer) { "}\n"); } - for (int i = 0; i < file_->dependency_count(); i++) { - const string root_class_name(FileClassName(file_->dependency(i))); + if (deps_with_extensions.empty()) { printer->Print( - "[registry addExtensions:[$dependency$ extensionRegistry]];\n", - "dependency", root_class_name); + "// None of the imports (direct or indirect) defined extensions, so no need to add\n" + "// them to this registry.\n"); + } else { + printer->Print( + "// Merge in the imports (direct or indirect) that defined extensions.\n"); + for (vector<const FileDescriptor *>::iterator iter = + deps_with_extensions.begin(); + iter != deps_with_extensions.end(); ++iter) { + const string root_class_name(FileClassName((*iter))); + printer->Print( + "[registry addExtensions:[$dependency$ extensionRegistry]];\n", + "dependency", root_class_name); + } } printer->Outdent(); @@ -328,11 +446,20 @@ void FileGenerator::GenerateSource(io::Printer *printer) { printer->Print( " }\n" " return registry;\n" - "}\n" - "\n"); + "}\n"); + } else { + if (file_->dependency_count() > 0) { + printer->Print( + "// No extensions in the file and none of the imports (direct or indirect)\n" + "// defined extensions, so no need to generate +extensionRegistry.\n"); + } else { + printer->Print( + "// No extensions in the file and no imports, so no need to generate\n" + "// +extensionRegistry.\n"); + } } - printer->Print("@end\n\n"); + printer->Print("\n@end\n\n"); // File descriptor only needed if there are messages to use it. if (message_generators_.size() > 0) { diff --git a/src/google/protobuf/compiler/parser.cc b/src/google/protobuf/compiler/parser.cc index 214d7c9c..519ed8fc 100644 --- a/src/google/protobuf/compiler/parser.cc +++ b/src/google/protobuf/compiler/parser.cc @@ -525,7 +525,6 @@ bool Parser::Parse(io::Tokenizer* input, FileDescriptorProto* file) { SourceCodeInfo source_code_info; source_code_info_ = &source_code_info; - vector<string> top_doc_comments; if (LookingAtType(io::Tokenizer::TYPE_START)) { // Advance to first token. input_->NextWithComments(NULL, &upcoming_detached_comments_, |