chromium/third_party/perfetto/src/protozero/proto_decoder.cc

/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "perfetto/protozero/proto_decoder.h"

#include <string.h>

#include <cinttypes>
#include <limits>
#include <memory>

#include "perfetto/base/compiler.h"
#include "perfetto/base/logging.h"
#include "perfetto/ext/base/utils.h"
#include "perfetto/protozero/proto_utils.h"

namespace protozero {

usingnamespaceproto_utils;

#if !PERFETTO_IS_LITTLE_ENDIAN()
#error Unimplemented for big endian archs.
#endif

namespace {

struct ParseFieldResult { … };

// Parses one field and returns the field itself and a pointer to the next
// field to parse. If parsing fails, the returned |next| == |buffer|.
ParseFieldResult ParseOneField(const uint8_t* const buffer,
                               const uint8_t* const end) { … }

}  // namespace

Field ProtoDecoder::FindField(uint32_t field_id) { … }

Field ProtoDecoder::ReadField() { … }

void TypedProtoDecoderBase::ParseAllFields() { … }

void TypedProtoDecoderBase::ExpandHeapStorage() { … }

}  // namespace protozero