root/third_party/protobuf/src/google/protobuf/wire_format_lite.cc

DEFINITIONS

1. SkipField
2. SkipMessage
3. SkipUnknownEnum
4. SkipField
5. SkipMessage
6. SerializeUnknownFields
7. SerializeUnknownFieldsToArray
8. SerializeUnknownMessageSetItems
9. SerializeUnknownMessageSetItemsToArray
10. ComputeUnknownFieldsSize
11. ComputeUnknownMessageSetItemsSize
12. ReadPackedEnumNoInline
13. WriteInt32
14. WriteInt64
15. WriteUInt32
16. WriteUInt64
17. WriteSInt32
18. WriteSInt64
19. WriteFixed32
20. WriteFixed64
21. WriteSFixed32
22. WriteSFixed64
23. WriteFloat
24. WriteDouble
25. WriteBool
26. WriteEnum
27. WriteString
28. WriteBytes
29. WriteGroup
30. WriteMessage
31. WriteGroupMaybeToArray
32. WriteMessageMaybeToArray
33. ReadString
34. ReadBytes

// 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/wire_format_lite_inl.h>

#include <stack>
#include <string>
#include <vector>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/io/coded_stream_inl.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/io/zero_copy_stream_impl_lite.h>
#include <google/protobuf/unknown_field_set.h>

namespace google {
namespace protobuf {
namespace internal {

#ifndef _MSC_VER    // MSVC doesn't like definitions of inline constants, GCC
                    // requires them.
const int WireFormatLite::kMessageSetItemStartTag;
const int WireFormatLite::kMessageSetItemEndTag;
const int WireFormatLite::kMessageSetTypeIdTag;
const int WireFormatLite::kMessageSetMessageTag;

#endif

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

bool FieldSkipper::SkipField(
    io::CodedInputStream* input, uint32 tag) {
  return WireFormatLite::SkipField(input, tag, unknown_fields_);
}

bool FieldSkipper::SkipMessage(io::CodedInputStream* input) {
  return WireFormatLite::SkipMessage(input, unknown_fields_);
}

void FieldSkipper::SkipUnknownEnum(
    int field_number, int value) {
  unknown_fields_->AddVarint(field_number, value);
}

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

const int WireFormatLite::kMessageSetItemTagsSize =
  io::CodedOutputStream::StaticVarintSize32<kMessageSetItemStartTag>::value +
  io::CodedOutputStream::StaticVarintSize32<kMessageSetItemEndTag>::value +
  io::CodedOutputStream::StaticVarintSize32<kMessageSetTypeIdTag>::value +
  io::CodedOutputStream::StaticVarintSize32<kMessageSetMessageTag>::value;

const WireFormatLite::CppType
WireFormatLite::kFieldTypeToCppTypeMap[MAX_FIELD_TYPE + 1] = {
  static_cast<CppType>(0),  // 0 is reserved for errors

  CPPTYPE_DOUBLE,   // TYPE_DOUBLE
  CPPTYPE_FLOAT,    // TYPE_FLOAT
  CPPTYPE_INT64,    // TYPE_INT64
  CPPTYPE_UINT64,   // TYPE_UINT64
  CPPTYPE_INT32,    // TYPE_INT32
  CPPTYPE_UINT64,   // TYPE_FIXED64
  CPPTYPE_UINT32,   // TYPE_FIXED32
  CPPTYPE_BOOL,     // TYPE_BOOL
  CPPTYPE_STRING,   // TYPE_STRING
  CPPTYPE_MESSAGE,  // TYPE_GROUP
  CPPTYPE_MESSAGE,  // TYPE_MESSAGE
  CPPTYPE_STRING,   // TYPE_BYTES
  CPPTYPE_UINT32,   // TYPE_UINT32
  CPPTYPE_ENUM,     // TYPE_ENUM
  CPPTYPE_INT32,    // TYPE_SFIXED32
  CPPTYPE_INT64,    // TYPE_SFIXED64
  CPPTYPE_INT32,    // TYPE_SINT32
  CPPTYPE_INT64,    // TYPE_SINT64
};

const WireFormatLite::WireType
WireFormatLite::kWireTypeForFieldType[MAX_FIELD_TYPE + 1] = {
  static_cast<WireFormatLite::WireType>(-1),  // invalid
  WireFormatLite::WIRETYPE_FIXED64,           // TYPE_DOUBLE
  WireFormatLite::WIRETYPE_FIXED32,           // TYPE_FLOAT
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_INT64
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_UINT64
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_INT32
  WireFormatLite::WIRETYPE_FIXED64,           // TYPE_FIXED64
  WireFormatLite::WIRETYPE_FIXED32,           // TYPE_FIXED32
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_BOOL
  WireFormatLite::WIRETYPE_LENGTH_DELIMITED,  // TYPE_STRING
  WireFormatLite::WIRETYPE_START_GROUP,       // TYPE_GROUP
  WireFormatLite::WIRETYPE_LENGTH_DELIMITED,  // TYPE_MESSAGE
  WireFormatLite::WIRETYPE_LENGTH_DELIMITED,  // TYPE_BYTES
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_UINT32
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_ENUM
  WireFormatLite::WIRETYPE_FIXED32,           // TYPE_SFIXED32
  WireFormatLite::WIRETYPE_FIXED64,           // TYPE_SFIXED64
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_SINT32
  WireFormatLite::WIRETYPE_VARINT,            // TYPE_SINT64
};

bool WireFormatLite::SkipField(io::CodedInputStream* input, uint32 tag,
                               UnknownFieldSet* unknown_fields) {
  int number = WireFormatLite::GetTagFieldNumber(tag);

  switch (WireFormatLite::GetTagWireType(tag)) {
    case WireFormatLite::WIRETYPE_VARINT: {
      uint64 value;
      if (!input->ReadVarint64(&value)) return false;
      if (unknown_fields != NULL) unknown_fields->AddVarint(number, value);
      return true;
    }
    case WireFormatLite::WIRETYPE_FIXED64: {
      uint64 value;
      if (!input->ReadLittleEndian64(&value)) return false;
      if (unknown_fields != NULL) unknown_fields->AddFixed64(number, value);
      return true;
    }
    case WireFormatLite::WIRETYPE_LENGTH_DELIMITED: {
      uint32 length;
      if (!input->ReadVarint32(&length)) return false;
      if (unknown_fields == NULL) {
        if (!input->Skip(length)) return false;
      } else {
        if (!input->ReadString(unknown_fields->AddLengthDelimited(number),
                               length)) {
          return false;
        }
      }
      return true;
    }
    case WireFormatLite::WIRETYPE_START_GROUP: {
      if (!input->IncrementRecursionDepth()) return false;
      if (!SkipMessage(input, (unknown_fields == NULL) ?
                              NULL : unknown_fields->AddGroup(number))) {
        return false;
      }
      input->DecrementRecursionDepth();
      // Check that the ending tag matched the starting tag.
      if (!input->LastTagWas(WireFormatLite::MakeTag(
          WireFormatLite::GetTagFieldNumber(tag),
          WireFormatLite::WIRETYPE_END_GROUP))) {
        return false;
      }
      return true;
    }
    case WireFormatLite::WIRETYPE_END_GROUP: {
      return false;
    }
    case WireFormatLite::WIRETYPE_FIXED32: {
      uint32 value;
      if (!input->ReadLittleEndian32(&value)) return false;
      if (unknown_fields != NULL) unknown_fields->AddFixed32(number, value);
      return true;
    }
    default: {
      return false;
    }
  }
}

bool WireFormatLite::SkipMessage(io::CodedInputStream* input,
                                 UnknownFieldSet* unknown_fields) {
  while(true) {
    uint32 tag = input->ReadTag();
    if (tag == 0) {
      // End of input.  This is a valid place to end, so return true.
      return true;
    }

    WireFormatLite::WireType wire_type = WireFormatLite::GetTagWireType(tag);

    if (wire_type == WireFormatLite::WIRETYPE_END_GROUP) {
      // Must be the end of the message.
      return true;
    }

    if (!SkipField(input, tag, unknown_fields)) return false;
  }
}

void WireFormatLite::SerializeUnknownFields(const UnknownFieldSet& unknown_fields,
                                            io::CodedOutputStream* output) {
  for (int i = 0; i < unknown_fields.field_count(); i++) {
    const UnknownField& field = unknown_fields.field(i);
    switch (field.type()) {
      case UnknownField::TYPE_VARINT:
        output->WriteVarint32(WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_VARINT));
        output->WriteVarint64(field.varint());
        break;
      case UnknownField::TYPE_FIXED32:
        output->WriteVarint32(WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_FIXED32));
        output->WriteLittleEndian32(field.fixed32());
        break;
      case UnknownField::TYPE_FIXED64:
        output->WriteVarint32(WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_FIXED64));
        output->WriteLittleEndian64(field.fixed64());
        break;
      case UnknownField::TYPE_LENGTH_DELIMITED:
        output->WriteVarint32(WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_LENGTH_DELIMITED));
        output->WriteVarint32(field.length_delimited().size());
        output->WriteString(field.length_delimited());
        break;
      case UnknownField::TYPE_GROUP:
        output->WriteVarint32(WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_START_GROUP));
        SerializeUnknownFields(field.group(), output);
        output->WriteVarint32(WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_END_GROUP));
        break;
    }
  }
}

uint8* WireFormatLite::SerializeUnknownFieldsToArray(
    const UnknownFieldSet& unknown_fields,
    uint8* target) {
  for (int i = 0; i < unknown_fields.field_count(); i++) {
    const UnknownField& field = unknown_fields.field(i);

    switch (field.type()) {
      case UnknownField::TYPE_VARINT:
        target = WireFormatLite::WriteInt64ToArray(
            field.number(), field.varint(), target);
        break;
      case UnknownField::TYPE_FIXED32:
        target = WireFormatLite::WriteFixed32ToArray(
            field.number(), field.fixed32(), target);
        break;
      case UnknownField::TYPE_FIXED64:
        target = WireFormatLite::WriteFixed64ToArray(
            field.number(), field.fixed64(), target);
        break;
      case UnknownField::TYPE_LENGTH_DELIMITED:
        target = WireFormatLite::WriteBytesToArray(
            field.number(), field.length_delimited(), target);
        break;
      case UnknownField::TYPE_GROUP:
        target = WireFormatLite::WriteTagToArray(
            field.number(), WireFormatLite::WIRETYPE_START_GROUP, target);
        target = SerializeUnknownFieldsToArray(field.group(), target);
        target = WireFormatLite::WriteTagToArray(
            field.number(), WireFormatLite::WIRETYPE_END_GROUP, target);
        break;
    }
  }
  return target;
}

void WireFormatLite::SerializeUnknownMessageSetItems(
    const UnknownFieldSet& unknown_fields,
    io::CodedOutputStream* output) {
  for (int i = 0; i < unknown_fields.field_count(); i++) {
    const UnknownField& field = unknown_fields.field(i);
    // The only unknown fields that are allowed to exist in a MessageSet are
    // messages, which are length-delimited.
    if (field.type() == UnknownField::TYPE_LENGTH_DELIMITED) {
      const string& data = field.length_delimited();

      // Start group.
      output->WriteVarint32(WireFormatLite::kMessageSetItemStartTag);

      // Write type ID.
      output->WriteVarint32(WireFormatLite::kMessageSetTypeIdTag);
      output->WriteVarint32(field.number());

      // Write message.
      output->WriteVarint32(WireFormatLite::kMessageSetMessageTag);
      output->WriteVarint32(data.size());
      output->WriteString(data);

      // End group.
      output->WriteVarint32(WireFormatLite::kMessageSetItemEndTag);
    }
  }
}

uint8* WireFormatLite::SerializeUnknownMessageSetItemsToArray(
    const UnknownFieldSet& unknown_fields,
    uint8* target) {
  for (int i = 0; i < unknown_fields.field_count(); i++) {
    const UnknownField& field = unknown_fields.field(i);

    // The only unknown fields that are allowed to exist in a MessageSet are
    // messages, which are length-delimited.
    if (field.type() == UnknownField::TYPE_LENGTH_DELIMITED) {
      const string& data = field.length_delimited();

      // Start group.
      target = io::CodedOutputStream::WriteTagToArray(
          WireFormatLite::kMessageSetItemStartTag, target);

      // Write type ID.
      target = io::CodedOutputStream::WriteTagToArray(
          WireFormatLite::kMessageSetTypeIdTag, target);
      target = io::CodedOutputStream::WriteVarint32ToArray(
          field.number(), target);

      // Write message.
      target = io::CodedOutputStream::WriteTagToArray(
          WireFormatLite::kMessageSetMessageTag, target);
      target = io::CodedOutputStream::WriteVarint32ToArray(data.size(), target);
      target = io::CodedOutputStream::WriteStringToArray(data, target);

      // End group.
      target = io::CodedOutputStream::WriteTagToArray(
          WireFormatLite::kMessageSetItemEndTag, target);
    }
  }

  return target;
}

int WireFormatLite::ComputeUnknownFieldsSize(
    const UnknownFieldSet& unknown_fields) {
  int size = 0;
  for (int i = 0; i < unknown_fields.field_count(); i++) {
    const UnknownField& field = unknown_fields.field(i);

    switch (field.type()) {
      case UnknownField::TYPE_VARINT:
        size += io::CodedOutputStream::VarintSize32(
            WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_VARINT));
        size += io::CodedOutputStream::VarintSize64(field.varint());
        break;
      case UnknownField::TYPE_FIXED32:
        size += io::CodedOutputStream::VarintSize32(
            WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_FIXED32));
        size += sizeof(int32);
        break;
      case UnknownField::TYPE_FIXED64:
        size += io::CodedOutputStream::VarintSize32(
            WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_FIXED64));
        size += sizeof(int64);
        break;
      case UnknownField::TYPE_LENGTH_DELIMITED:
        size += io::CodedOutputStream::VarintSize32(
            WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_LENGTH_DELIMITED));
        size += io::CodedOutputStream::VarintSize32(
            field.length_delimited().size());
        size += field.length_delimited().size();
        break;
      case UnknownField::TYPE_GROUP:
        size += io::CodedOutputStream::VarintSize32(
            WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_START_GROUP));
        size += ComputeUnknownFieldsSize(field.group());
        size += io::CodedOutputStream::VarintSize32(
            WireFormatLite::MakeTag(field.number(),
            WireFormatLite::WIRETYPE_END_GROUP));
        break;
    }
  }

  return size;
}

int WireFormatLite::ComputeUnknownMessageSetItemsSize(
    const UnknownFieldSet& unknown_fields) {
  int size = 0;
  for (int i = 0; i < unknown_fields.field_count(); i++) {
    const UnknownField& field = unknown_fields.field(i);

    // The only unknown fields that are allowed to exist in a MessageSet are
    // messages, which are length-delimited.
    if (field.type() == UnknownField::TYPE_LENGTH_DELIMITED) {
      size += WireFormatLite::kMessageSetItemTagsSize;
      size += io::CodedOutputStream::VarintSize32(field.number());
      size += io::CodedOutputStream::VarintSize32(
        field.length_delimited().size());
      size += field.length_delimited().size();
    }
  }

  return size;
}

bool WireFormatLite::ReadPackedEnumNoInline(io::CodedInputStream* input,
                                            bool (*is_valid)(int),
                                            RepeatedField<int>* values) {
  uint32 length;
  if (!input->ReadVarint32(&length)) return false;
  io::CodedInputStream::Limit limit = input->PushLimit(length);
  while (input->BytesUntilLimit() > 0) {
    int value;
    if (!google::protobuf::internal::WireFormatLite::ReadPrimitive<
        int, WireFormatLite::TYPE_ENUM>(input, &value)) {
      return false;
    }
    if (is_valid(value)) {
      values->Add(value);
    }
  }
  input->PopLimit(limit);
  return true;
}

void WireFormatLite::WriteInt32(int field_number, int32 value,
                                io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteInt32NoTag(value, output);
}
void WireFormatLite::WriteInt64(int field_number, int64 value,
                                io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteInt64NoTag(value, output);
}
void WireFormatLite::WriteUInt32(int field_number, uint32 value,
                                 io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteUInt32NoTag(value, output);
}
void WireFormatLite::WriteUInt64(int field_number, uint64 value,
                                 io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteUInt64NoTag(value, output);
}
void WireFormatLite::WriteSInt32(int field_number, int32 value,
                                 io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteSInt32NoTag(value, output);
}
void WireFormatLite::WriteSInt64(int field_number, int64 value,
                                 io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteSInt64NoTag(value, output);
}
void WireFormatLite::WriteFixed32(int field_number, uint32 value,
                                  io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_FIXED32, output);
  WriteFixed32NoTag(value, output);
}
void WireFormatLite::WriteFixed64(int field_number, uint64 value,
                                  io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_FIXED64, output);
  WriteFixed64NoTag(value, output);
}
void WireFormatLite::WriteSFixed32(int field_number, int32 value,
                                   io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_FIXED32, output);
  WriteSFixed32NoTag(value, output);
}
void WireFormatLite::WriteSFixed64(int field_number, int64 value,
                                   io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_FIXED64, output);
  WriteSFixed64NoTag(value, output);
}
void WireFormatLite::WriteFloat(int field_number, float value,
                                io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_FIXED32, output);
  WriteFloatNoTag(value, output);
}
void WireFormatLite::WriteDouble(int field_number, double value,
                                 io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_FIXED64, output);
  WriteDoubleNoTag(value, output);
}
void WireFormatLite::WriteBool(int field_number, bool value,
                               io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteBoolNoTag(value, output);
}
void WireFormatLite::WriteEnum(int field_number, int value,
                               io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_VARINT, output);
  WriteEnumNoTag(value, output);
}

void WireFormatLite::WriteString(int field_number, const string& value,
                                 io::CodedOutputStream* output) {
  // String is for UTF-8 text only
  WriteTag(field_number, WIRETYPE_LENGTH_DELIMITED, output);
  GOOGLE_CHECK(value.size() <= kint32max);
  output->WriteVarint32(value.size());
  output->WriteString(value);
}
void WireFormatLite::WriteBytes(int field_number, const string& value,
                                io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_LENGTH_DELIMITED, output);
  GOOGLE_CHECK(value.size() <= kint32max);
  output->WriteVarint32(value.size());
  output->WriteString(value);
}


void WireFormatLite::WriteGroup(int field_number,
                                const MessageLite& value,
                                io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_START_GROUP, output);
  value.SerializeWithCachedSizes(output);
  WriteTag(field_number, WIRETYPE_END_GROUP, output);
}

void WireFormatLite::WriteMessage(int field_number,
                                  const MessageLite& value,
                                  io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_LENGTH_DELIMITED, output);
  const int size = value.GetCachedSize();
  output->WriteVarint32(size);
  value.SerializeWithCachedSizes(output);
}

void WireFormatLite::WriteGroupMaybeToArray(int field_number,
                                            const MessageLite& value,
                                            io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_START_GROUP, output);
  const int size = value.GetCachedSize();
  uint8* target = output->GetDirectBufferForNBytesAndAdvance(size);
  if (target != NULL) {
    uint8* end = value.SerializeWithCachedSizesToArray(target);
    GOOGLE_DCHECK_EQ(end - target, size);
  } else {
    value.SerializeWithCachedSizes(output);
  }
  WriteTag(field_number, WIRETYPE_END_GROUP, output);
}

void WireFormatLite::WriteMessageMaybeToArray(int field_number,
                                              const MessageLite& value,
                                              io::CodedOutputStream* output) {
  WriteTag(field_number, WIRETYPE_LENGTH_DELIMITED, output);
  const int size = value.GetCachedSize();
  output->WriteVarint32(size);
  uint8* target = output->GetDirectBufferForNBytesAndAdvance(size);
  if (target != NULL) {
    uint8* end = value.SerializeWithCachedSizesToArray(target);
    GOOGLE_DCHECK_EQ(end - target, size);
  } else {
    value.SerializeWithCachedSizes(output);
  }
}

bool WireFormatLite::ReadString(io::CodedInputStream* input,
                                string* value) {
  // String is for UTF-8 text only
  uint32 length;
  if (!input->ReadVarint32(&length)) return false;
  if (!input->InternalReadStringInline(value, length)) return false;
  return true;
}
bool WireFormatLite::ReadBytes(io::CodedInputStream* input,
                               string* value) {
  uint32 length;
  if (!input->ReadVarint32(&length)) return false;
  return input->InternalReadStringInline(value, length);
}

}  // namespace internal
}  // namespace protobuf
}  // namespace google