277 lines
12 KiB
C++
277 lines
12 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef GOOGLE_PROTOBUF_EXTENSION_SET_INL_H__
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#define GOOGLE_PROTOBUF_EXTENSION_SET_INL_H__
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#include <google/protobuf/parse_context.h>
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#include <google/protobuf/extension_set.h>
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#include <google/protobuf/metadata_lite.h>
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namespace google {
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namespace protobuf {
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namespace internal {
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template <typename T>
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const char* ExtensionSet::ParseFieldWithExtensionInfo(
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int number, bool was_packed_on_wire, const ExtensionInfo& extension,
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InternalMetadata* metadata, const char* ptr, internal::ParseContext* ctx) {
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if (was_packed_on_wire) {
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switch (extension.type) {
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#define HANDLE_TYPE(UPPERCASE, CPP_CAMELCASE) \
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case WireFormatLite::TYPE_##UPPERCASE: \
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return internal::Packed##CPP_CAMELCASE##Parser( \
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MutableRawRepeatedField(number, extension.type, extension.is_packed, \
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extension.descriptor), \
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ptr, ctx);
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HANDLE_TYPE(INT32, Int32);
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HANDLE_TYPE(INT64, Int64);
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HANDLE_TYPE(UINT32, UInt32);
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HANDLE_TYPE(UINT64, UInt64);
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HANDLE_TYPE(SINT32, SInt32);
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HANDLE_TYPE(SINT64, SInt64);
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HANDLE_TYPE(FIXED32, Fixed32);
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HANDLE_TYPE(FIXED64, Fixed64);
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HANDLE_TYPE(SFIXED32, SFixed32);
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HANDLE_TYPE(SFIXED64, SFixed64);
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HANDLE_TYPE(FLOAT, Float);
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HANDLE_TYPE(DOUBLE, Double);
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HANDLE_TYPE(BOOL, Bool);
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#undef HANDLE_TYPE
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case WireFormatLite::TYPE_ENUM:
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return internal::PackedEnumParserArg<T>(
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MutableRawRepeatedField(number, extension.type, extension.is_packed,
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extension.descriptor),
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ptr, ctx, extension.enum_validity_check.func,
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extension.enum_validity_check.arg, metadata, number);
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case WireFormatLite::TYPE_STRING:
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case WireFormatLite::TYPE_BYTES:
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case WireFormatLite::TYPE_GROUP:
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case WireFormatLite::TYPE_MESSAGE:
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GOOGLE_LOG(FATAL) << "Non-primitive types can't be packed.";
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break;
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}
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} else {
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switch (extension.type) {
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#define HANDLE_VARINT_TYPE(UPPERCASE, CPP_CAMELCASE) \
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case WireFormatLite::TYPE_##UPPERCASE: { \
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uint64_t value; \
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ptr = VarintParse(ptr, &value); \
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr); \
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if (extension.is_repeated) { \
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Add##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, \
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extension.is_packed, value, extension.descriptor); \
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} else { \
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Set##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, value, \
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extension.descriptor); \
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} \
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} break
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HANDLE_VARINT_TYPE(INT32, Int32);
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HANDLE_VARINT_TYPE(INT64, Int64);
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HANDLE_VARINT_TYPE(UINT32, UInt32);
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HANDLE_VARINT_TYPE(UINT64, UInt64);
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HANDLE_VARINT_TYPE(BOOL, Bool);
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#undef HANDLE_VARINT_TYPE
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#define HANDLE_SVARINT_TYPE(UPPERCASE, CPP_CAMELCASE, SIZE) \
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case WireFormatLite::TYPE_##UPPERCASE: { \
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uint64_t val; \
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ptr = VarintParse(ptr, &val); \
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr); \
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auto value = WireFormatLite::ZigZagDecode##SIZE(val); \
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if (extension.is_repeated) { \
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Add##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, \
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extension.is_packed, value, extension.descriptor); \
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} else { \
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Set##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, value, \
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extension.descriptor); \
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} \
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} break
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HANDLE_SVARINT_TYPE(SINT32, Int32, 32);
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HANDLE_SVARINT_TYPE(SINT64, Int64, 64);
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#undef HANDLE_SVARINT_TYPE
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#define HANDLE_FIXED_TYPE(UPPERCASE, CPP_CAMELCASE, CPPTYPE) \
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case WireFormatLite::TYPE_##UPPERCASE: { \
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auto value = UnalignedLoad<CPPTYPE>(ptr); \
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ptr += sizeof(CPPTYPE); \
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if (extension.is_repeated) { \
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Add##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, \
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extension.is_packed, value, extension.descriptor); \
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} else { \
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Set##CPP_CAMELCASE(number, WireFormatLite::TYPE_##UPPERCASE, value, \
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extension.descriptor); \
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} \
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} break
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HANDLE_FIXED_TYPE(FIXED32, UInt32, uint32_t);
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HANDLE_FIXED_TYPE(FIXED64, UInt64, uint64_t);
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HANDLE_FIXED_TYPE(SFIXED32, Int32, int32_t);
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HANDLE_FIXED_TYPE(SFIXED64, Int64, int64_t);
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HANDLE_FIXED_TYPE(FLOAT, Float, float);
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HANDLE_FIXED_TYPE(DOUBLE, Double, double);
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#undef HANDLE_FIXED_TYPE
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case WireFormatLite::TYPE_ENUM: {
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uint64_t val;
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ptr = VarintParse(ptr, &val);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
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int value = val;
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if (!extension.enum_validity_check.func(
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extension.enum_validity_check.arg, value)) {
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WriteVarint(number, val, metadata->mutable_unknown_fields<T>());
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} else if (extension.is_repeated) {
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AddEnum(number, WireFormatLite::TYPE_ENUM, extension.is_packed, value,
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extension.descriptor);
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} else {
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SetEnum(number, WireFormatLite::TYPE_ENUM, value,
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extension.descriptor);
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}
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break;
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}
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case WireFormatLite::TYPE_BYTES:
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case WireFormatLite::TYPE_STRING: {
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std::string* value =
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extension.is_repeated
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? AddString(number, WireFormatLite::TYPE_STRING,
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extension.descriptor)
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: MutableString(number, WireFormatLite::TYPE_STRING,
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extension.descriptor);
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int size = ReadSize(&ptr);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
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return ctx->ReadString(ptr, size, value);
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}
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case WireFormatLite::TYPE_GROUP: {
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MessageLite* value =
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extension.is_repeated
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? AddMessage(number, WireFormatLite::TYPE_GROUP,
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*extension.message_info.prototype,
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extension.descriptor)
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: MutableMessage(number, WireFormatLite::TYPE_GROUP,
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*extension.message_info.prototype,
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extension.descriptor);
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uint32_t tag = (number << 3) + WireFormatLite::WIRETYPE_START_GROUP;
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return ctx->ParseGroup(value, ptr, tag);
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}
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case WireFormatLite::TYPE_MESSAGE: {
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MessageLite* value =
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extension.is_repeated
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? AddMessage(number, WireFormatLite::TYPE_MESSAGE,
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*extension.message_info.prototype,
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extension.descriptor)
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: MutableMessage(number, WireFormatLite::TYPE_MESSAGE,
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*extension.message_info.prototype,
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extension.descriptor);
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return ctx->ParseMessage(value, ptr);
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}
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}
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}
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return ptr;
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}
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template <typename Msg, typename T>
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const char* ExtensionSet::ParseMessageSetItemTmpl(
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const char* ptr, const Msg* extendee, internal::InternalMetadata* metadata,
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internal::ParseContext* ctx) {
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std::string payload;
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uint32_t type_id = 0;
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bool payload_read = false;
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while (!ctx->Done(&ptr)) {
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uint32_t tag = static_cast<uint8_t>(*ptr++);
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if (tag == WireFormatLite::kMessageSetTypeIdTag) {
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uint64_t tmp;
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ptr = ParseBigVarint(ptr, &tmp);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
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type_id = tmp;
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if (payload_read) {
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ExtensionInfo extension;
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bool was_packed_on_wire;
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if (!FindExtension(2, type_id, extendee, ctx, &extension,
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&was_packed_on_wire)) {
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WriteLengthDelimited(type_id, payload,
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metadata->mutable_unknown_fields<T>());
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} else {
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MessageLite* value =
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extension.is_repeated
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? AddMessage(type_id, WireFormatLite::TYPE_MESSAGE,
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*extension.message_info.prototype,
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extension.descriptor)
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: MutableMessage(type_id, WireFormatLite::TYPE_MESSAGE,
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*extension.message_info.prototype,
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extension.descriptor);
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const char* p;
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// We can't use regular parse from string as we have to track
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// proper recursion depth and descriptor pools.
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ParseContext tmp_ctx(ctx->depth(), false, &p, payload);
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tmp_ctx.data().pool = ctx->data().pool;
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tmp_ctx.data().factory = ctx->data().factory;
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GOOGLE_PROTOBUF_PARSER_ASSERT(value->_InternalParse(p, &tmp_ctx) &&
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tmp_ctx.EndedAtLimit());
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}
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type_id = 0;
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}
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} else if (tag == WireFormatLite::kMessageSetMessageTag) {
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if (type_id != 0) {
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ptr = ParseFieldMaybeLazily(static_cast<uint64_t>(type_id) * 8 + 2, ptr,
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extendee, metadata, ctx);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr != nullptr);
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type_id = 0;
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} else {
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int32_t size = ReadSize(&ptr);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
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ptr = ctx->ReadString(ptr, size, &payload);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
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payload_read = true;
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}
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} else {
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ptr = ReadTag(ptr - 1, &tag);
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if (tag == 0 || (tag & 7) == 4) {
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ctx->SetLastTag(tag);
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return ptr;
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}
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ptr = ParseField(tag, ptr, extendee, metadata, ctx);
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GOOGLE_PROTOBUF_PARSER_ASSERT(ptr);
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}
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}
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return ptr;
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}
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} // namespace internal
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} // namespace protobuf
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} // namespace google
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#endif // GOOGLE_PROTOBUF_EXTENSION_SET_INL_H__
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