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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.
#include <google/protobuf/compiler/cpp/cpp_map_field.h>
#include <google/protobuf/compiler/cpp/cpp_helpers.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 {
bool IsProto3Field(const FieldDescriptor* field_descriptor) {
const FileDescriptor* file_descriptor = field_descriptor->file();
return file_descriptor->syntax() == FileDescriptor::SYNTAX_PROTO3;
}
void SetMessageVariables(const FieldDescriptor* descriptor,
map<string, string>* variables,
const Options& options) {
SetCommonFieldVariables(descriptor, variables, options);
(*variables)["type"] = FieldMessageTypeName(descriptor);
(*variables)["stream_writer"] = (*variables)["declared_type"] +
(HasFastArraySerialization(descriptor->message_type()->file()) ?
"MaybeToArray" :
"");
(*variables)["full_name"] = descriptor->full_name();
const FieldDescriptor* key =
descriptor->message_type()->FindFieldByName("key");
const FieldDescriptor* val =
descriptor->message_type()->FindFieldByName("value");
(*variables)["key_cpp"] = PrimitiveTypeName(key->cpp_type());
switch (val->cpp_type()) {
case FieldDescriptor::CPPTYPE_MESSAGE:
(*variables)["val_cpp"] = FieldMessageTypeName(val);
(*variables)["wrapper"] = "EntryWrapper";
break;
case FieldDescriptor::CPPTYPE_ENUM:
(*variables)["val_cpp"] = ClassName(val->enum_type(), false);
(*variables)["wrapper"] = "EnumEntryWrapper";
break;
default:
(*variables)["val_cpp"] = PrimitiveTypeName(val->cpp_type());
(*variables)["wrapper"] = "EntryWrapper";
}
(*variables)["key_wire_type"] =
"::google::protobuf::internal::WireFormatLite::TYPE_" +
ToUpper(DeclaredTypeMethodName(key->type()));
(*variables)["val_wire_type"] =
"::google::protobuf::internal::WireFormatLite::TYPE_" +
ToUpper(DeclaredTypeMethodName(val->type()));
(*variables)["map_classname"] = ClassName(descriptor->message_type(), false);
(*variables)["number"] = SimpleItoa(descriptor->number());
(*variables)["tag"] = SimpleItoa(internal::WireFormat::MakeTag(descriptor));
if (HasDescriptorMethods(descriptor->file())) {
(*variables)["lite"] = "";
} else {
(*variables)["lite"] = "Lite";
}
if (!IsProto3Field(descriptor) &&
val->type() == FieldDescriptor::TYPE_ENUM) {
const EnumValueDescriptor* default_value = val->default_value_enum();
(*variables)["default_enum_value"] = Int32ToString(default_value->number());
} else {
(*variables)["default_enum_value"] = "0";
}
}
MapFieldGenerator::
MapFieldGenerator(const FieldDescriptor* descriptor,
const Options& options)
: descriptor_(descriptor) {
SetMessageVariables(descriptor, &variables_, options);
}
MapFieldGenerator::~MapFieldGenerator() {}
void MapFieldGenerator::
GeneratePrivateMembers(io::Printer* printer) const {
printer->Print(variables_,
"typedef ::google::protobuf::internal::MapEntryLite<\n"
" $key_cpp$, $val_cpp$,\n"
" $key_wire_type$,\n"
" $val_wire_type$,\n"
" $default_enum_value$ >\n"
" $map_classname$;\n"
"::google::protobuf::internal::MapField$lite$<\n"
" $key_cpp$, $val_cpp$,\n"
" $key_wire_type$,\n"
" $val_wire_type$,\n"
" $default_enum_value$ > $name$_;\n");
}
void MapFieldGenerator::
GenerateAccessorDeclarations(io::Printer* printer) const {
printer->Print(variables_,
"const ::google::protobuf::Map< $key_cpp$, $val_cpp$ >&\n"
" $name$() const$deprecation$;\n"
"::google::protobuf::Map< $key_cpp$, $val_cpp$ >*\n"
" mutable_$name$()$deprecation$;\n");
}
void MapFieldGenerator::
GenerateInlineAccessorDefinitions(io::Printer* printer,
bool is_inline) const {
map<string, string> variables(variables_);
variables["inline"] = is_inline ? "inline" : "";
printer->Print(variables,
"$inline$ const ::google::protobuf::Map< $key_cpp$, $val_cpp$ >&\n"
"$classname$::$name$() const {\n"
" // @@protoc_insertion_point(field_map:$full_name$)\n"
" return $name$_.GetMap();\n"
"}\n"
"$inline$ ::google::protobuf::Map< $key_cpp$, $val_cpp$ >*\n"
"$classname$::mutable_$name$() {\n"
" // @@protoc_insertion_point(field_mutable_map:$full_name$)\n"
" return $name$_.MutableMap();\n"
"}\n");
}
void MapFieldGenerator::
GenerateClearingCode(io::Printer* printer) const {
printer->Print(variables_, "$name$_.Clear();\n");
}
void MapFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
printer->Print(variables_, "$name$_.MergeFrom(from.$name$_);\n");
}
void MapFieldGenerator::
GenerateSwappingCode(io::Printer* printer) const {
printer->Print(variables_, "$name$_.Swap(&other->$name$_);\n");
}
void MapFieldGenerator::
GenerateConstructorCode(io::Printer* printer) const {
if (HasDescriptorMethods(descriptor_->file())) {
printer->Print(variables_,
"$name$_.SetAssignDescriptorCallback(\n"
" protobuf_AssignDescriptorsOnce);\n"
"$name$_.SetEntryDescriptor(\n"
" &$type$_descriptor_);\n");
}
}
void MapFieldGenerator::
GenerateMergeFromCodedStream(io::Printer* printer) const {
const FieldDescriptor* value_field =
descriptor_->message_type()->FindFieldByName("value");
printer->Print(variables_,
"::google::protobuf::scoped_ptr<$map_classname$> entry($name$_.NewEntry());\n");
if (IsProto3Field(descriptor_) ||
value_field->type() != FieldDescriptor::TYPE_ENUM) {
printer->Print(variables_,
"DO_(::google::protobuf::internal::WireFormatLite::ReadMessageNoVirtual(\n"
" input, entry.get()));\n");
switch (value_field->cpp_type()) {
case FieldDescriptor::CPPTYPE_MESSAGE:
printer->Print(variables_,
"(*mutable_$name$())[entry->key()].Swap("
"entry->mutable_value());\n");
break;
case FieldDescriptor::CPPTYPE_ENUM:
printer->Print(variables_,
"(*mutable_$name$())[entry->key()] =\n"
" static_cast<$val_cpp$>(*entry->mutable_value());\n");
break;
default:
printer->Print(variables_,
"(*mutable_$name$())[entry->key()] = *entry->mutable_value();\n");
break;
}
} else {
printer->Print(variables_,
"{\n"
" ::std::string data;\n"
" DO_(::google::protobuf::internal::WireFormatLite::ReadString(input, &data));\n"
" DO_(entry->ParseFromString(data));\n"
" if ($val_cpp$_IsValid(*entry->mutable_value())) {\n"
" (*mutable_$name$())[entry->key()] =\n"
" static_cast<$val_cpp$>(*entry->mutable_value());\n"
" } else {\n");
if (HasDescriptorMethods(descriptor_->file())) {
printer->Print(variables_,
" mutable_unknown_fields()"
"->AddLengthDelimited($number$, data);\n");
} else {
printer->Print(variables_,
" unknown_fields_stream.WriteVarint32($tag$);\n"
" unknown_fields_stream.WriteVarint32(data.size());\n"
" unknown_fields_stream.WriteString(data);\n");
}
printer->Print(variables_,
" }\n"
"}\n");
}
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
"if (entry->GetArena() != NULL) entry.release();\n");
}
}
void MapFieldGenerator::
GenerateSerializeWithCachedSizes(io::Printer* printer) const {
printer->Print(variables_,
"{\n"
" ::google::protobuf::scoped_ptr<$map_classname$> entry;\n"
" for (::google::protobuf::Map< $key_cpp$, $val_cpp$ >::const_iterator\n"
" it = $name$().begin(); it != $name$().end(); ++it) {\n");
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
" if (entry.get() != NULL && entry->GetArena() != NULL) {\n"
" entry.release();\n"
" }\n");
}
printer->Print(variables_,
" entry.reset($name$_.New$wrapper$(it->first, it->second));\n"
" ::google::protobuf::internal::WireFormatLite::Write$stream_writer$(\n"
" $number$, *entry, output);\n"
" }\n");
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
" if (entry.get() != NULL && entry->GetArena() != NULL) {\n"
" entry.release();\n"
" }\n");
}
printer->Print("}\n");
}
void MapFieldGenerator::
GenerateSerializeWithCachedSizesToArray(io::Printer* printer) const {
printer->Print(variables_,
"{\n"
" ::google::protobuf::scoped_ptr<$map_classname$> entry;\n"
" for (::google::protobuf::Map< $key_cpp$, $val_cpp$ >::const_iterator\n"
" it = $name$().begin(); it != $name$().end(); ++it) {\n");
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
" if (entry.get() != NULL && entry->GetArena() != NULL) {\n"
" entry.release();\n"
" }\n");
}
printer->Print(variables_,
" entry.reset($name$_.New$wrapper$(it->first, it->second));\n"
" target = ::google::protobuf::internal::WireFormatLite::\n"
" Write$declared_type$NoVirtualToArray(\n"
" $number$, *entry, target);\n"
" }\n");
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
" if (entry.get() != NULL && entry->GetArena() != NULL) {\n"
" entry.release();\n"
" }\n");
}
printer->Print("}\n");
}
void MapFieldGenerator::
GenerateByteSize(io::Printer* printer) const {
printer->Print(variables_,
"total_size += $tag_size$ * this->$name$_size();\n"
"{\n"
" ::google::protobuf::scoped_ptr<$map_classname$> entry;\n"
" for (::google::protobuf::Map< $key_cpp$, $val_cpp$ >::const_iterator\n"
" it = $name$().begin(); it != $name$().end(); ++it) {\n");
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
" if (entry.get() != NULL && entry->GetArena() != NULL) {\n"
" entry.release();\n"
" }\n");
}
printer->Print(variables_,
" entry.reset($name$_.New$wrapper$(it->first, it->second));\n"
" total_size += ::google::protobuf::internal::WireFormatLite::\n"
" $declared_type$SizeNoVirtual(*entry);\n"
" }\n");
// If entry is allocated by arena, its desctructor should be avoided.
if (SupportsArenas(descriptor_)) {
printer->Print(variables_,
" if (entry.get() != NULL && entry->GetArena() != NULL) {\n"
" entry.release();\n"
" }\n");
}
printer->Print("}\n");
}
} // namespace cpp
} // namespace compiler
} // namespace protobuf
} // namespace google