third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_primitive

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
FixedSize
SetPrimitiveVariables
PrimitiveFieldGenerator
GeneratePrivateMembers
GenerateAccessorDeclarations
GenerateInlineAccessorDefinitions
GenerateClearingCode
GenerateMergingCode
GenerateSwappingCode
GenerateConstructorCode
GenerateMergeFromCodedStream
GenerateSerializeWithCachedSizes
GenerateSerializeWithCachedSizesToArray
GenerateByteSize
RepeatedPrimitiveFieldGenerator
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_primitive_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 {

using internal::WireFormatLite;

namespace {

// For encodings with fixed sizes, returns that size in bytes.  Otherwise
// returns -1.
int FixedSize(FieldDescriptor::Type type) {
  switch (type) {
    case FieldDescriptor::TYPE_INT32   : return -1;
    case FieldDescriptor::TYPE_INT64   : return -1;
    case FieldDescriptor::TYPE_UINT32  : return -1;
    case FieldDescriptor::TYPE_UINT64  : return -1;
    case FieldDescriptor::TYPE_SINT32  : return -1;
    case FieldDescriptor::TYPE_SINT64  : return -1;
    case FieldDescriptor::TYPE_FIXED32 : return WireFormatLite::kFixed32Size;
    case FieldDescriptor::TYPE_FIXED64 : return WireFormatLite::kFixed64Size;
    case FieldDescriptor::TYPE_SFIXED32: return WireFormatLite::kSFixed32Size;
    case FieldDescriptor::TYPE_SFIXED64: return WireFormatLite::kSFixed64Size;
    case FieldDescriptor::TYPE_FLOAT   : return WireFormatLite::kFloatSize;
    case FieldDescriptor::TYPE_DOUBLE  : return WireFormatLite::kDoubleSize;

    case FieldDescriptor::TYPE_BOOL    : return WireFormatLite::kBoolSize;
    case FieldDescriptor::TYPE_ENUM    : return -1;

    case FieldDescriptor::TYPE_STRING  : return -1;
    case FieldDescriptor::TYPE_BYTES   : return -1;
    case FieldDescriptor::TYPE_GROUP   : return -1;
    case FieldDescriptor::TYPE_MESSAGE : return -1;

    // No default because we want the compiler to complain if any new
    // types are added.
  }
  GOOGLE_LOG(FATAL) << "Can't get here.";
  return -1;
}

void SetPrimitiveVariables(const FieldDescriptor* descriptor,
                           map<string, string>* variables,
                           const Options& options) {
  SetCommonFieldVariables(descriptor, variables, options);
  (*variables)["type"] = PrimitiveTypeName(descriptor->cpp_type());
  (*variables)["default"] = DefaultValue(descriptor);
  (*variables)["tag"] = SimpleItoa(internal::WireFormat::MakeTag(descriptor));
  int fixed_size = FixedSize(descriptor->type());
  if (fixed_size != -1) {
    (*variables)["fixed_size"] = SimpleItoa(fixed_size);
  }
  (*variables)["wire_format_field_type"] =
      "::google::protobuf::internal::WireFormatLite::" + FieldDescriptorProto_Type_Name(
          static_cast<FieldDescriptorProto_Type>(descriptor->type()));
}

}  // namespace

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

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

PrimitiveFieldGenerator::~PrimitiveFieldGenerator() {}

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

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

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

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

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

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

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

void PrimitiveFieldGenerator::
GenerateMergeFromCodedStream(io::Printer* printer) const {
  printer->Print(variables_,
    "DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<\n"
    "         $type$, $wire_format_field_type$>(\n"
    "       input, &$name$_)));\n"
    "set_has_$name$();\n");
}

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

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

void PrimitiveFieldGenerator::
GenerateByteSize(io::Printer* printer) const {
  int fixed_size = FixedSize(descriptor_->type());
  if (fixed_size == -1) {
    printer->Print(variables_,
      "total_size += $tag_size$ +\n"
      "  ::google::protobuf::internal::WireFormatLite::$declared_type$Size(\n"
      "    this->$name$());\n");
  } else {
    printer->Print(variables_,
      "total_size += $tag_size$ + $fixed_size$;\n");
  }
}

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

RepeatedPrimitiveFieldGenerator::
RepeatedPrimitiveFieldGenerator(const FieldDescriptor* descriptor,
                                const Options& options)
  : descriptor_(descriptor) {
  SetPrimitiveVariables(descriptor, &variables_, options);

  if (descriptor->options().packed()) {
    variables_["packed_reader"] = "ReadPackedPrimitive";
    variables_["repeated_reader"] = "ReadRepeatedPrimitiveNoInline";
  } else {
    variables_["packed_reader"] = "ReadPackedPrimitiveNoInline";
    variables_["repeated_reader"] = "ReadRepeatedPrimitive";
  }
}

RepeatedPrimitiveFieldGenerator::~RepeatedPrimitiveFieldGenerator() {}

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

void RepeatedPrimitiveFieldGenerator::
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< $type$ >&\n"
    "    $name$() const$deprecation$;\n"
    "inline ::google::protobuf::RepeatedField< $type$ >*\n"
    "    mutable_$name$()$deprecation$;\n");
}

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

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

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

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

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

void RepeatedPrimitiveFieldGenerator::
GenerateMergeFromCodedStream(io::Printer* printer) const {
  printer->Print(variables_,
    "DO_((::google::protobuf::internal::WireFormatLite::$repeated_reader$<\n"
    "         $type$, $wire_format_field_type$>(\n"
    "       $tag_size$, $tag$, input, this->mutable_$name$())));\n");
}

void RepeatedPrimitiveFieldGenerator::
GenerateMergeFromCodedStreamWithPacking(io::Printer* printer) const {
  printer->Print(variables_,
    "DO_((::google::protobuf::internal::WireFormatLite::$packed_reader$<\n"
    "         $type$, $wire_format_field_type$>(\n"
    "       input, this->mutable_$name$())));\n");
}

void RepeatedPrimitiveFieldGenerator::
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("
          "$number$, "
          "::google::protobuf::internal::WireFormatLite::WIRETYPE_LENGTH_DELIMITED, "
          "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::Write$declared_type$NoTag(\n"
      "    this->$name$(i), output);\n");
  } else {
    printer->Print(variables_,
      "  ::google::protobuf::internal::WireFormatLite::Write$declared_type$(\n"
      "    $number$, this->$name$(i), output);\n");
  }
  printer->Print("}\n");
}

void RepeatedPrimitiveFieldGenerator::
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(\n"
      "    _$name$_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::\n"
      "    Write$declared_type$NoTagToArray(this->$name$(i), target);\n");
  } else {
    printer->Print(variables_,
      "  target = ::google::protobuf::internal::WireFormatLite::\n"
      "    Write$declared_type$ToArray($number$, this->$name$(i), target);\n");
  }
  printer->Print("}\n");
}

void RepeatedPrimitiveFieldGenerator::
GenerateByteSize(io::Printer* printer) const {
  printer->Print(variables_,
    "{\n"
    "  int data_size = 0;\n");
  printer->Indent();
  int fixed_size = FixedSize(descriptor_->type());
  if (fixed_size == -1) {
    printer->Print(variables_,
      "for (int i = 0; i < this->$name$_size(); i++) {\n"
      "  data_size += ::google::protobuf::internal::WireFormatLite::\n"
      "    $declared_type$Size(this->$name$(i));\n"
      "}\n");
  } else {
    printer->Print(variables_,
      "data_size = $fixed_size$ * this->$name$_size();\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_primitive_field.cc

DEFINITIONS
