third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum

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This source file includes following definitions.
SetEnumVariables
EnumFieldGenerator
GeneratePrivateMembers
GenerateAccessorDeclarations
GenerateInlineAccessorDefinitions
GenerateClearingCode
GenerateMergingCode
GenerateSwappingCode
GenerateConstructorCode
GenerateMergeFromCodedStream
GenerateSerializeWithCachedSizes
GenerateSerializeWithCachedSizesToArray
GenerateByteSize
RepeatedEnumFieldGenerator
GeneratePrivateMembers
GenerateAccessorDeclarations
GenerateInlineAccessorDefinitions
GenerateClearingCode
GenerateMergingCode
GenerateSwappingCode
GenerateConstructorCode
GenerateMergeFromCodedStream
GenerateMergeFromCodedStreamWithPacking
GenerateSerializeWithCachedSizes
GenerateSerializeWithCachedSizesToArray
GenerateByteSize
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://code.google.com/p/protobuf/
//
// 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_enum_field.h>
#include <google/protobuf/compiler/cpp/cpp_helpers.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/stubs/strutil.h>

namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {

namespace {

void SetEnumVariables(const FieldDescriptor* descriptor,
                      map<string, string>* variables,
                      const Options& options) {
  SetCommonFieldVariables(descriptor, variables, options);
  const EnumValueDescriptor* default_value = descriptor->default_value_enum();
  (*variables)["type"] = ClassName(descriptor->enum_type(), true);
  (*variables)["default"] = SimpleItoa(default_value->number());
}

}  // namespace

// ===================================================================

EnumFieldGenerator::
EnumFieldGenerator(const FieldDescriptor* descriptor,
                   const Options& options)
  : descriptor_(descriptor) {
  SetEnumVariables(descriptor, &variables_, options);
}

EnumFieldGenerator::~EnumFieldGenerator() {}

void EnumFieldGenerator::
GeneratePrivateMembers(io::Printer* printer) const {
  printer->Print(variables_, "int $name$_;\n");
}

void EnumFieldGenerator::
GenerateAccessorDeclarations(io::Printer* printer) const {
  printer->Print(variables_,
    "inline $type$ $name$() const$deprecation$;\n"
    "inline void set_$name$($type$ value)$deprecation$;\n");
}

void EnumFieldGenerator::
GenerateInlineAccessorDefinitions(io::Printer* printer) const {
  printer->Print(variables_,
    "inline $type$ $classname$::$name$() const {\n"
    "  return static_cast< $type$ >($name$_);\n"
    "}\n"
    "inline void $classname$::set_$name$($type$ value) {\n"
    "  assert($type$_IsValid(value));\n"
    "  set_has_$name$();\n"
    "  $name$_ = value;\n"
    "}\n");
}

void EnumFieldGenerator::
GenerateClearingCode(io::Printer* printer) const {
  printer->Print(variables_, "$name$_ = $default$;\n");
}

void EnumFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
  printer->Print(variables_, "set_$name$(from.$name$());\n");
}

void EnumFieldGenerator::
GenerateSwappingCode(io::Printer* printer) const {
  printer->Print(variables_, "std::swap($name$_, other->$name$_);\n");
}

void EnumFieldGenerator::
GenerateConstructorCode(io::Printer* printer) const {
  printer->Print(variables_, "$name$_ = $default$;\n");
}

void EnumFieldGenerator::
GenerateMergeFromCodedStream(io::Printer* printer) const {
  printer->Print(variables_,
    "int value;\n"
    "DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<\n"
    "         int, ::google::protobuf::internal::WireFormatLite::TYPE_ENUM>(\n"
    "       input, &value)));\n"
    "if ($type$_IsValid(value)) {\n"
    "  set_$name$(static_cast< $type$ >(value));\n");
  if (HasUnknownFields(descriptor_->file())) {
    printer->Print(variables_,
      "} else {\n"
      "  mutable_unknown_fields()->AddVarint($number$, value);\n");
  }
  printer->Print(variables_,
    "}\n");
}

void EnumFieldGenerator::
GenerateSerializeWithCachedSizes(io::Printer* printer) const {
  printer->Print(variables_,
    "::google::protobuf::internal::WireFormatLite::WriteEnum(\n"
    "  $number$, this->$name$(), output);\n");
}

void EnumFieldGenerator::
GenerateSerializeWithCachedSizesToArray(io::Printer* printer) const {
  printer->Print(variables_,
    "target = ::google::protobuf::internal::WireFormatLite::WriteEnumToArray(\n"
    "  $number$, this->$name$(), target);\n");
}

void EnumFieldGenerator::
GenerateByteSize(io::Printer* printer) const {
  printer->Print(variables_,
    "total_size += $tag_size$ +\n"
    "  ::google::protobuf::internal::WireFormatLite::EnumSize(this->$name$());\n");
}

// ===================================================================

RepeatedEnumFieldGenerator::
RepeatedEnumFieldGenerator(const FieldDescriptor* descriptor,
                           const Options& options)
  : descriptor_(descriptor) {
  SetEnumVariables(descriptor, &variables_, options);
}

RepeatedEnumFieldGenerator::~RepeatedEnumFieldGenerator() {}

void RepeatedEnumFieldGenerator::
GeneratePrivateMembers(io::Printer* printer) const {
  printer->Print(variables_,
    "::google::protobuf::RepeatedField<int> $name$_;\n");
  if (descriptor_->options().packed() && HasGeneratedMethods(descriptor_->file())) {
    printer->Print(variables_,
      "mutable int _$name$_cached_byte_size_;\n");
  }
}

void RepeatedEnumFieldGenerator::
GenerateAccessorDeclarations(io::Printer* printer) const {
  printer->Print(variables_,
    "inline $type$ $name$(int index) const$deprecation$;\n"
    "inline void set_$name$(int index, $type$ value)$deprecation$;\n"
    "inline void add_$name$($type$ value)$deprecation$;\n");
  printer->Print(variables_,
    "inline const ::google::protobuf::RepeatedField<int>& $name$() const$deprecation$;\n"
    "inline ::google::protobuf::RepeatedField<int>* mutable_$name$()$deprecation$;\n");
}

void RepeatedEnumFieldGenerator::
GenerateInlineAccessorDefinitions(io::Printer* printer) const {
  printer->Print(variables_,
    "inline $type$ $classname$::$name$(int index) const {\n"
    "  return static_cast< $type$ >($name$_.Get(index));\n"
    "}\n"
    "inline void $classname$::set_$name$(int index, $type$ value) {\n"
    "  assert($type$_IsValid(value));\n"
    "  $name$_.Set(index, value);\n"
    "}\n"
    "inline void $classname$::add_$name$($type$ value) {\n"
    "  assert($type$_IsValid(value));\n"
    "  $name$_.Add(value);\n"
    "}\n");
  printer->Print(variables_,
    "inline const ::google::protobuf::RepeatedField<int>&\n"
    "$classname$::$name$() const {\n"
    "  return $name$_;\n"
    "}\n"
    "inline ::google::protobuf::RepeatedField<int>*\n"
    "$classname$::mutable_$name$() {\n"
    "  return &$name$_;\n"
    "}\n");
}

void RepeatedEnumFieldGenerator::
GenerateClearingCode(io::Printer* printer) const {
  printer->Print(variables_, "$name$_.Clear();\n");
}

void RepeatedEnumFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
  printer->Print(variables_, "$name$_.MergeFrom(from.$name$_);\n");
}

void RepeatedEnumFieldGenerator::
GenerateSwappingCode(io::Printer* printer) const {
  printer->Print(variables_, "$name$_.Swap(&other->$name$_);\n");
}

void RepeatedEnumFieldGenerator::
GenerateConstructorCode(io::Printer* printer) const {
  // Not needed for repeated fields.
}

void RepeatedEnumFieldGenerator::
GenerateMergeFromCodedStream(io::Printer* printer) const {
  // Don't use ReadRepeatedPrimitive here so that the enum can be validated.
  printer->Print(variables_,
    "int value;\n"
    "DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<\n"
    "         int, ::google::protobuf::internal::WireFormatLite::TYPE_ENUM>(\n"
    "       input, &value)));\n"
    "if ($type$_IsValid(value)) {\n"
    "  add_$name$(static_cast< $type$ >(value));\n");
  if (HasUnknownFields(descriptor_->file())) {
    printer->Print(variables_,
      "} else {\n"
      "  mutable_unknown_fields()->AddVarint($number$, value);\n");
  }
  printer->Print("}\n");
}

void RepeatedEnumFieldGenerator::
GenerateMergeFromCodedStreamWithPacking(io::Printer* printer) const {
  if (!descriptor_->options().packed()) {
    // We use a non-inlined implementation in this case, since this path will
    // rarely be executed.
    printer->Print(variables_,
      "DO_((::google::protobuf::internal::WireFormatLite::ReadPackedEnumNoInline(\n"
      "       input,\n"
      "       &$type$_IsValid,\n"
      "       this->mutable_$name$())));\n");
  } else {
    printer->Print(variables_,
      "::google::protobuf::uint32 length;\n"
      "DO_(input->ReadVarint32(&length));\n"
      "::google::protobuf::io::CodedInputStream::Limit limit = "
          "input->PushLimit(length);\n"
      "while (input->BytesUntilLimit() > 0) {\n"
      "  int value;\n"
      "  DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<\n"
      "         int, ::google::protobuf::internal::WireFormatLite::TYPE_ENUM>(\n"
      "       input, &value)));\n"
      "  if ($type$_IsValid(value)) {\n"
      "    add_$name$(static_cast< $type$ >(value));\n"
      "  }\n"
      "}\n"
      "input->PopLimit(limit);\n");
  }
}

void RepeatedEnumFieldGenerator::
GenerateSerializeWithCachedSizes(io::Printer* printer) const {
  if (descriptor_->options().packed()) {
    // Write the tag and the size.
    printer->Print(variables_,
      "if (this->$name$_size() > 0) {\n"
      "  ::google::protobuf::internal::WireFormatLite::WriteTag(\n"
      "    $number$,\n"
      "    ::google::protobuf::internal::WireFormatLite::WIRETYPE_LENGTH_DELIMITED,\n"
      "    output);\n"
      "  output->WriteVarint32(_$name$_cached_byte_size_);\n"
      "}\n");
  }
  printer->Print(variables_,
      "for (int i = 0; i < this->$name$_size(); i++) {\n");
  if (descriptor_->options().packed()) {
    printer->Print(variables_,
      "  ::google::protobuf::internal::WireFormatLite::WriteEnumNoTag(\n"
      "    this->$name$(i), output);\n");
  } else {
    printer->Print(variables_,
      "  ::google::protobuf::internal::WireFormatLite::WriteEnum(\n"
      "    $number$, this->$name$(i), output);\n");
  }
  printer->Print("}\n");
}

void RepeatedEnumFieldGenerator::
GenerateSerializeWithCachedSizesToArray(io::Printer* printer) const {
  if (descriptor_->options().packed()) {
    // Write the tag and the size.
    printer->Print(variables_,
      "if (this->$name$_size() > 0) {\n"
      "  target = ::google::protobuf::internal::WireFormatLite::WriteTagToArray(\n"
      "    $number$,\n"
      "    ::google::protobuf::internal::WireFormatLite::WIRETYPE_LENGTH_DELIMITED,\n"
      "    target);\n"
      "  target = ::google::protobuf::io::CodedOutputStream::WriteVarint32ToArray("
      "    _$name$_cached_byte_size_, target);\n"
      "}\n");
  }
  printer->Print(variables_,
      "for (int i = 0; i < this->$name$_size(); i++) {\n");
  if (descriptor_->options().packed()) {
    printer->Print(variables_,
      "  target = ::google::protobuf::internal::WireFormatLite::WriteEnumNoTagToArray(\n"
      "    this->$name$(i), target);\n");
  } else {
    printer->Print(variables_,
      "  target = ::google::protobuf::internal::WireFormatLite::WriteEnumToArray(\n"
      "    $number$, this->$name$(i), target);\n");
  }
  printer->Print("}\n");
}

void RepeatedEnumFieldGenerator::
GenerateByteSize(io::Printer* printer) const {
  printer->Print(variables_,
    "{\n"
    "  int data_size = 0;\n");
  printer->Indent();
  printer->Print(variables_,
      "for (int i = 0; i < this->$name$_size(); i++) {\n"
      "  data_size += ::google::protobuf::internal::WireFormatLite::EnumSize(\n"
      "    this->$name$(i));\n"
      "}\n");

  if (descriptor_->options().packed()) {
    printer->Print(variables_,
      "if (data_size > 0) {\n"
      "  total_size += $tag_size$ +\n"
      "    ::google::protobuf::internal::WireFormatLite::Int32Size(data_size);\n"
      "}\n"
      "GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();\n"
      "_$name$_cached_byte_size_ = data_size;\n"
      "GOOGLE_SAFE_CONCURRENT_WRITES_END();\n"
      "total_size += data_size;\n");
  } else {
    printer->Print(variables_,
      "total_size += $tag_size$ * this->$name$_size() + data_size;\n");
  }
  printer->Outdent();
  printer->Print("}\n");
}

}  // namespace cpp
}  // namespace compiler
}  // namespace protobuf
}  // namespace google
/* [<][>][^][v][top][bottom][index][help] */
root/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum_field.cc

DEFINITIONS
