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// 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>
#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/stubs/logging.h>
#include <google/protobuf/stubs/common.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/io/printer.h>
#include <google/protobuf/wire_format.h>
#include <google/protobuf/stubs/strutil.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
using internal::WireFormat;
void SetCommonFieldVariables(const FieldDescriptor* descriptor,
std::map<string, string>* variables,
const Options& options) {
SetCommonVars(options, variables);
(*variables)["ns"] = Namespace(descriptor);
(*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());
(*variables)["field_member"] = FieldName(descriptor) + "_";
(*variables)["tag_size"] = SimpleItoa(
WireFormat::TagSize(descriptor->number(), descriptor->type()));
(*variables)["deprecated_attr"] =
DeprecatedAttribute(options, descriptor->options().deprecated());
(*variables)["set_hasbit"] = "";
(*variables)["clear_hasbit"] = "";
if (HasFieldPresence(descriptor->file())) {
(*variables)["set_hasbit_io"] =
"HasBitSetters::set_has_" + FieldName(descriptor) + "(this);";
} else {
(*variables)["set_hasbit_io"] = "";
}
// These variables are placeholders to pick out the beginning and ends of
// identifiers for annotations (when doing so with existing variables would
// be ambiguous or impossible). They should never be set to anything but the
// empty string.
(*variables)["{"] = "";
(*variables)["}"] = "";
}
void FieldGenerator::SetHasBitIndex(int32 has_bit_index) {
if (!HasFieldPresence(descriptor_->file()) || has_bit_index == -1) {
return;
}
variables_["set_hasbit"] = StrCat(
"_has_bits_[", has_bit_index / 32, "] |= 0x",
strings::Hex(1u << (has_bit_index % 32), strings::ZERO_PAD_8), "u;");
variables_["clear_hasbit"] = StrCat(
"_has_bits_[", has_bit_index / 32, "] &= ~0x",
strings::Hex(1u << (has_bit_index % 32), strings::ZERO_PAD_8), "u;");
}
void SetCommonOneofFieldVariables(const FieldDescriptor* descriptor,
std::map<string, string>* variables) {
const string prefix = descriptor->containing_oneof()->name() + "_.";
(*variables)["oneof_name"] = descriptor->containing_oneof()->name();
(*variables)["field_member"] =
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,
MessageSCCAnalyzer* scc_analyzer)
: descriptor_(descriptor),
options_(options),
field_generators_(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, scc_analyzer));
}
}
FieldGenerator* FieldGeneratorMap::MakeGoogleInternalGenerator(
const FieldDescriptor* field, const Options& options,
MessageSCCAnalyzer* scc_analyzer) {
return nullptr;
}
FieldGenerator* FieldGeneratorMap::MakeGenerator(
const FieldDescriptor* field, const Options& options,
MessageSCCAnalyzer* scc_analyzer) {
FieldGenerator* generator =
MakeGoogleInternalGenerator(field, options, scc_analyzer);
if (generator) {
return generator;
}
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,
scc_analyzer);
}
case FieldDescriptor::CPPTYPE_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, scc_analyzer);
case FieldDescriptor::CPPTYPE_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, scc_analyzer);
case FieldDescriptor::CPPTYPE_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
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