diff options
Diffstat (limited to 'src/google/protobuf/compiler/objectivec/objectivec_oneof.cc')
| -rw-r--r-- | src/google/protobuf/compiler/objectivec/objectivec_oneof.cc | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/objectivec/objectivec_oneof.cc b/src/google/protobuf/compiler/objectivec/objectivec_oneof.cc new file mode 100644 index 00000000..44bafd7f --- /dev/null +++ b/src/google/protobuf/compiler/objectivec/objectivec_oneof.cc @@ -0,0 +1,138 @@ +// 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 <map> +#include <string> + +#include <google/protobuf/compiler/objectivec/objectivec_oneof.h> +#include <google/protobuf/compiler/objectivec/objectivec_helpers.h> +#include <google/protobuf/io/printer.h> +#include <google/protobuf/stubs/strutil.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace objectivec { + +OneofGenerator::OneofGenerator(const OneofDescriptor* descriptor) + : descriptor_(descriptor) { + variables_["enum_name"] = OneofEnumName(descriptor_); + variables_["name"] = OneofName(descriptor_); + variables_["capitalized_name"] = OneofNameCapitalized(descriptor_); + variables_["raw_index"] = SimpleItoa(descriptor_->index()); + const Descriptor* msg_descriptor = descriptor_->containing_type(); + variables_["owning_message_class"] = ClassName(msg_descriptor); + + string comments; + SourceLocation location; + if (descriptor_->GetSourceLocation(&location)) { + comments = BuildCommentsString(location); + } else { + comments = ""; + } + variables_["comments"] = comments; +} + +OneofGenerator::~OneofGenerator() {} + +void OneofGenerator::SetOneofIndexBase(int index_base) { + int index = descriptor_->index() + index_base; + // Flip the sign to mark it as a oneof. + variables_["index"] = SimpleItoa(-index); +} + +void OneofGenerator::GenerateCaseEnum(io::Printer* printer) { + printer->Print( + variables_, + "typedef GPB_ENUM($enum_name$) {\n"); + printer->Indent(); + printer->Print( + variables_, + "$enum_name$_GPBUnsetOneOfCase = 0,\n"); + string enum_name = variables_["enum_name"]; + for (int j = 0; j < descriptor_->field_count(); j++) { + const FieldDescriptor* field = descriptor_->field(j); + string field_name = FieldNameCapitalized(field); + printer->Print( + "$enum_name$_$field_name$ = $field_number$,\n", + "enum_name", enum_name, + "field_name", field_name, + "field_number", SimpleItoa(field->number())); + } + printer->Outdent(); + printer->Print( + "};\n" + "\n"); +} + +void OneofGenerator::GeneratePublicCasePropertyDeclaration( + io::Printer* printer) { + printer->Print( + variables_, + "$comments$" + "@property(nonatomic, readonly) $enum_name$ $name$OneOfCase;\n" + "\n"); +} + +void OneofGenerator::GenerateClearFunctionDeclaration(io::Printer* printer) { + printer->Print( + variables_, + "/// Clears whatever value was set for the oneof '$name$'.\n" + "void $owning_message_class$_Clear$capitalized_name$OneOfCase($owning_message_class$ *message);\n"); +} + +void OneofGenerator::GeneratePropertyImplementation(io::Printer* printer) { + printer->Print( + variables_, + "@dynamic $name$OneOfCase;\n"); +} + +void OneofGenerator::GenerateClearFunctionImplementation(io::Printer* printer) { + printer->Print( + variables_, + "void $owning_message_class$_Clear$capitalized_name$OneOfCase($owning_message_class$ *message) {\n" + " GPBDescriptor *descriptor = [message descriptor];\n" + " GPBOneofDescriptor *oneof = descriptor->oneofs_[$raw_index$];\n" + " GPBMaybeClearOneof(message, oneof, $index$, 0);\n" + "}\n"); +} + +string OneofGenerator::DescriptorName(void) const { + return variables_.find("name")->second; +} + +string OneofGenerator::HasIndexAsString(void) const { + return variables_.find("index")->second; +} + +} // namespace objectivec +} // namespace compiler +} // namespace protobuf +} // namespace google |