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Diffstat (limited to 'src/google/protobuf/compiler/cpp/cpp_field.cc')
-rw-r--r-- | src/google/protobuf/compiler/cpp/cpp_field.cc | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/cpp/cpp_field.cc b/src/google/protobuf/compiler/cpp/cpp_field.cc new file mode 100644 index 00000000..43df1d88 --- /dev/null +++ b/src/google/protobuf/compiler/cpp/cpp_field.cc @@ -0,0 +1,197 @@ +// 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) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. + +#include <google/protobuf/compiler/cpp/cpp_field.h> +#include <memory> +#ifndef _SHARED_PTR_H +#include <google/protobuf/stubs/shared_ptr.h> +#endif + +#include <google/protobuf/compiler/cpp/cpp_helpers.h> +#include <google/protobuf/compiler/cpp/cpp_primitive_field.h> +#include <google/protobuf/compiler/cpp/cpp_string_field.h> +#include <google/protobuf/compiler/cpp/cpp_enum_field.h> +#include <google/protobuf/compiler/cpp/cpp_map_field.h> +#include <google/protobuf/compiler/cpp/cpp_message_field.h> +#include <google/protobuf/descriptor.pb.h> +#include <google/protobuf/wire_format.h> +#include <google/protobuf/io/printer.h> +#include <google/protobuf/stubs/common.h> +#include <google/protobuf/stubs/strutil.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace cpp { + +using internal::WireFormat; + +void SetCommonFieldVariables(const FieldDescriptor* descriptor, + map<string, string>* variables, + const Options& options) { + (*variables)["name"] = FieldName(descriptor); + (*variables)["index"] = SimpleItoa(descriptor->index()); + (*variables)["number"] = SimpleItoa(descriptor->number()); + (*variables)["classname"] = ClassName(FieldScope(descriptor), false); + (*variables)["declared_type"] = DeclaredTypeMethodName(descriptor->type()); + + // non_null_ptr_to_name is usable only if has_$name$ is true. It yields a + // pointer that will not be NULL. Subclasses of FieldGenerator may set + // (*variables)["non_null_ptr_to_name"] differently. + (*variables)["non_null_ptr_to_name"] = + StrCat("&this->", FieldName(descriptor), "()"); + + (*variables)["tag_size"] = SimpleItoa( + WireFormat::TagSize(descriptor->number(), descriptor->type())); + (*variables)["deprecation"] = descriptor->options().deprecated() + ? " PROTOBUF_DEPRECATED" : ""; + + (*variables)["cppget"] = "Get"; + + if (HasFieldPresence(descriptor->file())) { + (*variables)["set_hasbit"] = + "set_has_" + FieldName(descriptor) + "();"; + (*variables)["clear_hasbit"] = + "clear_has_" + FieldName(descriptor) + "();"; + } else { + (*variables)["set_hasbit"] = ""; + (*variables)["clear_hasbit"] = ""; + } + + // By default, empty string, so that generic code used for both oneofs and + // singular fields can be written. + (*variables)["oneof_prefix"] = ""; +} + +void SetCommonOneofFieldVariables(const FieldDescriptor* descriptor, + map<string, string>* variables) { + const string prefix = descriptor->containing_oneof()->name() + "_."; + (*variables)["oneof_prefix"] = prefix; + (*variables)["oneof_name"] = descriptor->containing_oneof()->name(); + (*variables)["non_null_ptr_to_name"] = + StrCat(prefix, (*variables)["name"], "_"); +} + +FieldGenerator::~FieldGenerator() {} + +void FieldGenerator:: +GenerateMergeFromCodedStreamWithPacking(io::Printer* printer) const { + // Reaching here indicates a bug. Cases are: + // - This FieldGenerator should support packing, but this method should be + // overridden. + // - This FieldGenerator doesn't support packing, and this method should + // never have been called. + GOOGLE_LOG(FATAL) << "GenerateMergeFromCodedStreamWithPacking() " + << "called on field generator that does not support packing."; + +} + +FieldGeneratorMap::FieldGeneratorMap(const Descriptor* descriptor, + const Options& options) + : descriptor_(descriptor), + field_generators_( + new google::protobuf::scoped_ptr<FieldGenerator>[descriptor->field_count()]) { + // Construct all the FieldGenerators. + for (int i = 0; i < descriptor->field_count(); i++) { + field_generators_[i].reset(MakeGenerator(descriptor->field(i), options)); + } +} + +FieldGenerator* FieldGeneratorMap::MakeGenerator(const FieldDescriptor* field, + const Options& options) { + if (field->is_repeated()) { + switch (field->cpp_type()) { + case FieldDescriptor::CPPTYPE_MESSAGE: + if (field->is_map()) { + return new MapFieldGenerator(field, options); + } else { + return new RepeatedMessageFieldGenerator(field, options); + } + case FieldDescriptor::CPPTYPE_STRING: + switch (field->options().ctype()) { + default: // RepeatedStringFieldGenerator handles unknown ctypes. + case FieldOptions::STRING: + return new RepeatedStringFieldGenerator(field, options); + } + case FieldDescriptor::CPPTYPE_ENUM: + return new RepeatedEnumFieldGenerator(field, options); + default: + return new RepeatedPrimitiveFieldGenerator(field, options); + } + } else if (field->containing_oneof()) { + switch (field->cpp_type()) { + case FieldDescriptor::CPPTYPE_MESSAGE: + return new MessageOneofFieldGenerator(field, options); + case FieldDescriptor::CPPTYPE_STRING: + switch (field->options().ctype()) { + default: // StringOneofFieldGenerator handles unknown ctypes. + case FieldOptions::STRING: + return new StringOneofFieldGenerator(field, options); + } + case FieldDescriptor::CPPTYPE_ENUM: + return new EnumOneofFieldGenerator(field, options); + default: + return new PrimitiveOneofFieldGenerator(field, options); + } + } else { + switch (field->cpp_type()) { + case FieldDescriptor::CPPTYPE_MESSAGE: + return new MessageFieldGenerator(field, options); + case FieldDescriptor::CPPTYPE_STRING: + switch (field->options().ctype()) { + default: // StringFieldGenerator handles unknown ctypes. + case FieldOptions::STRING: + return new StringFieldGenerator(field, options); + } + case FieldDescriptor::CPPTYPE_ENUM: + return new EnumFieldGenerator(field, options); + default: + return new PrimitiveFieldGenerator(field, options); + } + } +} + +FieldGeneratorMap::~FieldGeneratorMap() {} + +const FieldGenerator& FieldGeneratorMap::get( + const FieldDescriptor* field) const { + GOOGLE_CHECK_EQ(field->containing_type(), descriptor_); + return *field_generators_[field->index()]; +} + + +} // namespace cpp +} // namespace compiler +} // namespace protobuf +} // namespace google |