extension_set_inl.h
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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.
#ifndef GOOGLE_PROTOBUF_EXTENSION_SET_INL_H__
#define GOOGLE_PROTOBUF_EXTENSION_SET_INL_H__
#include <google/protobuf/extension_set.h>
#include <google/protobuf/metadata_lite.h>
#include <google/protobuf/parse_context.h>
namespace google {
namespace protobuf {
namespace internal {
template <typename T>
const char* ExtensionSet::ParseFieldWithExtensionInfo(
int number, bool was_packed_on_wire, const ExtensionInfo& extension,
InternalMetadata* metadata, const char* ptr, internal::ParseContext* ctx) {
if (was_packed_on_wire) {
switch (extension.type) {
#define HANDLE_TYPE(UPPERCASE, CPP_CAMELCASE) \
case WireFormatLite::TYPE_##UPPERCASE: \
return internal::Packed##CPP_CAMELCASE##Parser( \
MutableRawRepeatedField(number, extension.type, extension.is_packed, \
extension.descriptor), \
ptr, ctx);
HANDLE_TYPE(INT32, Int32);
HANDLE_TYPE(INT64, Int64);
HANDLE_TYPE(UINT32, UInt32);
HANDLE_TYPE(UINT64, UInt64);
HANDLE_TYPE(SINT32, SInt32);
HANDLE_TYPE(SINT64, SInt64);
HANDLE_TYPE(FIXED32, Fixed32);
HANDLE_TYPE(FIXED64, Fixed64);
HANDLE_TYPE(SFIXED32, SFixed32);
HANDLE_TYPE(SFIXED64, SFixed64);
HANDLE_TYPE(FLOAT, Float);
HANDLE_TYPE(DOUBLE, Double);
HANDLE_TYPE(BOOL, Bool);
#undef HANDLE_TYPE
case WireFormatLite::TYPE_ENUM:
return internal::PackedEnumParserArg<T>(
MutableRawRepeatedField(number, extension.type, extension.is_packed,
extension.descriptor),
ptr, ctx, extension.enum_validity_check.func,
extension.enum_validity_check.arg, metadata, number);
case WireFormatLite::TYPE_STRING:
case WireFormatLite::TYPE_BYTES:
case WireFormatLite::TYPE_GROUP:
case WireFormatLite::TYPE_MESSAGE:
GOOGLE_LOG(FATAL) << "Non-primitive types can't be packed.";
break;
}
} else {
switch (extension.type) {
#define HANDLE_VARINT_TYPE(UPPERCASE, CPP_CAMELCASE) \
case WireFormatLite::TYPE_##UPPERCASE: { \
uint64_t value; \
ptr = VarintParse(ptr, &value); \
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr); \
if (extension.is_repeated) { \
Add##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, \
extension.is_packed, value, extension.descriptor); \
} else { \
Set##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, value, \
extension.descriptor); \
} \
} break
HANDLE_VARINT_TYPE(INT32, Int32);
HANDLE_VARINT_TYPE(INT64, Int64);
HANDLE_VARINT_TYPE(UINT32, UInt32);
HANDLE_VARINT_TYPE(UINT64, UInt64);
HANDLE_VARINT_TYPE(BOOL, Bool);
#undef HANDLE_VARINT_TYPE
#define HANDLE_SVARINT_TYPE(UPPERCASE, CPP_CAMELCASE, SIZE) \
case WireFormatLite::TYPE_##UPPERCASE: { \
uint64_t val; \
ptr = VarintParse(ptr, &val); \
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr); \
auto value = WireFormatLite::ZigZagDecode##SIZE(val); \
if (extension.is_repeated) { \
Add##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, \
extension.is_packed, value, extension.descriptor); \
} else { \
Set##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, value, \
extension.descriptor); \
} \
} break
HANDLE_SVARINT_TYPE(SINT32, Int32, 32);
HANDLE_SVARINT_TYPE(SINT64, Int64, 64);
#undef HANDLE_SVARINT_TYPE
#define HANDLE_FIXED_TYPE(UPPERCASE, CPP_CAMELCASE, CPPTYPE) \
case WireFormatLite::TYPE_##UPPERCASE: { \
auto value = UnalignedLoad<CPPTYPE>(ptr); \
ptr += sizeof(CPPTYPE); \
if (extension.is_repeated) { \
Add##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, \
extension.is_packed, value, extension.descriptor); \
} else { \
Set##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, value, \
extension.descriptor); \
} \
} break
HANDLE_FIXED_TYPE(FIXED32, UInt32, uint32_t);
HANDLE_FIXED_TYPE(FIXED64, UInt64, uint64_t);
HANDLE_FIXED_TYPE(SFIXED32, Int32, int32_t);
HANDLE_FIXED_TYPE(SFIXED64, Int64, int64_t);
HANDLE_FIXED_TYPE(FLOAT, Float, float);
HANDLE_FIXED_TYPE(DOUBLE, Double, double);
#undef HANDLE_FIXED_TYPE
case WireFormatLite::TYPE_ENUM: {
uint64_t val;
ptr = VarintParse(ptr, &val);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
int value = val;
if (!extension.enum_validity_check.func(
extension.enum_validity_check.arg, value)) {
WriteVarint(number, val, metadata->mutable_unknown_fields<T>());
} else if (extension.is_repeated) {
AddEnum(number, WireFormatLite::TYPE_ENUM, extension.is_packed, value,
extension.descriptor);
} else {
SetEnum(number, WireFormatLite::TYPE_ENUM, value,
extension.descriptor);
}
break;
}
case WireFormatLite::TYPE_BYTES:
case WireFormatLite::TYPE_STRING: {
std::string* value =
extension.is_repeated
? AddString(number, WireFormatLite::TYPE_STRING,
extension.descriptor)
: MutableString(number, WireFormatLite::TYPE_STRING,
extension.descriptor);
int size = ReadSize(&ptr);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
return ctx->ReadString(ptr, size, value);
}
case WireFormatLite::TYPE_GROUP: {
MessageLite* value =
extension.is_repeated
? AddMessage(number, WireFormatLite::TYPE_GROUP,
*extension.message_info.prototype,
extension.descriptor)
: MutableMessage(number, WireFormatLite::TYPE_GROUP,
*extension.message_info.prototype,
extension.descriptor);
uint32_t tag = (number << 3) + WireFormatLite::WIRETYPE_START_GROUP;
return ctx->ParseGroup(value, ptr, tag);
}
case WireFormatLite::TYPE_MESSAGE: {
MessageLite* value =
extension.is_repeated
? AddMessage(number, WireFormatLite::TYPE_MESSAGE,
*extension.message_info.prototype,
extension.descriptor)
: MutableMessage(number, WireFormatLite::TYPE_MESSAGE,
*extension.message_info.prototype,
extension.descriptor);
return ctx->ParseMessage(value, ptr);
}
}
}
return ptr;
}
template <typename Msg, typename T>
const char* ExtensionSet::ParseMessageSetItemTmpl(
const char* ptr, const Msg* extendee, internal::InternalMetadata* metadata,
internal::ParseContext* ctx) {
std::string payload;
uint32_t type_id;
enum class State { kNoTag, kHasType, kHasPayload, kDone };
State state = State::kNoTag;
while (!ctx->Done(&ptr)) {
uint32_t tag = static_cast<uint8_t>(*ptr++);
if (tag == WireFormatLite::kMessageSetTypeIdTag) {
uint64_t tmp;
ptr = ParseBigVarint(ptr, &tmp);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
if (state == State::kNoTag) {
type_id = tmp;
state = State::kHasType;
} else if (state == State::kHasPayload) {
type_id = tmp;
ExtensionInfo extension;
bool was_packed_on_wire;
if (!FindExtension(2, type_id, extendee, ctx, &extension,
&was_packed_on_wire)) {
WriteLengthDelimited(type_id, payload,
metadata->mutable_unknown_fields<T>());
} else {
MessageLite* value =
extension.is_repeated
? AddMessage(type_id, WireFormatLite::TYPE_MESSAGE,
*extension.message_info.prototype,
extension.descriptor)
: MutableMessage(type_id, WireFormatLite::TYPE_MESSAGE,
*extension.message_info.prototype,
extension.descriptor);
const char* p;
// We can't use regular parse from string as we have to track
// proper recursion depth and descriptor pools.
ParseContext tmp_ctx(ctx->depth(), false, &p, payload);
tmp_ctx.data().pool = ctx->data().pool;
tmp_ctx.data().factory = ctx->data().factory;
GOOGLE_PROTOBUF_PARSER_ASSERT(value->_InternalParse(p, &tmp_ctx) &&
tmp_ctx.EndedAtLimit());
}
state = State::kDone;
}
} else if (tag == WireFormatLite::kMessageSetMessageTag) {
if (state == State::kHasType) {
ptr = ParseFieldMaybeLazily(static_cast<uint64_t>(type_id) * 8 + 2, ptr,
extendee, metadata, ctx);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr != nullptr);
state = State::kDone;
} else {
std::string tmp;
int32_t size = ReadSize(&ptr);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
ptr = ctx->ReadString(ptr, size, &tmp);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
if (state == State::kNoTag) {
payload = std::move(tmp);
state = State::kHasPayload;
}
}
} else {
ptr = ReadTag(ptr - 1, &tag);
if (tag == 0 || (tag & 7) == 4) {
ctx->SetLastTag(tag);
return ptr;
}
ptr = ParseField(tag, ptr, extendee, metadata, ctx);
GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
}
}
return ptr;
}
} // namespace internal
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_EXTENSION_SET_INL_H__