359 lines
14 KiB
C++
359 lines
14 KiB
C++
// 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.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
|
|
|
|
const int WireFormatLite::kMessageSetItemTagsSize =
|
|
io::CodedOutputStream::VarintSize32(kMessageSetItemStartTag) +
|
|
io::CodedOutputStream::VarintSize32(kMessageSetItemEndTag) +
|
|
io::CodedOutputStream::VarintSize32(kMessageSetTypeIdTag) +
|
|
io::CodedOutputStream::VarintSize32(kMessageSetMessageTag);
|
|
|
|
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) {
|
|
switch (WireFormatLite::GetTagWireType(tag)) {
|
|
case WireFormatLite::WIRETYPE_VARINT: {
|
|
uint64 value;
|
|
if (!input->ReadVarint64(&value)) return false;
|
|
return true;
|
|
}
|
|
case WireFormatLite::WIRETYPE_FIXED64: {
|
|
uint64 value;
|
|
if (!input->ReadLittleEndian64(&value)) return false;
|
|
return true;
|
|
}
|
|
case WireFormatLite::WIRETYPE_LENGTH_DELIMITED: {
|
|
uint32 length;
|
|
if (!input->ReadVarint32(&length)) return false;
|
|
if (!input->Skip(length)) return false;
|
|
return true;
|
|
}
|
|
case WireFormatLite::WIRETYPE_START_GROUP: {
|
|
if (!input->IncrementRecursionDepth()) return false;
|
|
if (!SkipMessage(input)) 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;
|
|
return true;
|
|
}
|
|
default: {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool WireFormatLite::SkipMessage(io::CodedInputStream* input) {
|
|
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)) return false;
|
|
}
|
|
}
|
|
|
|
bool FieldSkipper::SkipField(
|
|
io::CodedInputStream* input, uint32 tag) {
|
|
return WireFormatLite::SkipField(input, tag);
|
|
}
|
|
|
|
bool FieldSkipper::SkipMessage(io::CodedInputStream* input) {
|
|
return WireFormatLite::SkipMessage(input);
|
|
}
|
|
|
|
void FieldSkipper::SkipUnknownEnum(
|
|
int field_number, int value) {
|
|
// Nothing.
|
|
}
|
|
|
|
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);
|
|
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);
|
|
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
|