blob: 43df1d88924ef035de68b6998b95d08056fb285c [file] [log] [blame]
// 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