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/*
* Copyright (C) 2019 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.
*/
#ifndef SRC_TRACE_PROCESSOR_UTIL_DESCRIPTORS_H_
#define SRC_TRACE_PROCESSOR_UTIL_DESCRIPTORS_H_
#include <algorithm>
#include <string>
#include <vector>
#include "perfetto/ext/base/optional.h"
#include "perfetto/trace_processor/basic_types.h"
#include "perfetto/trace_processor/status.h"
namespace protozero {
struct ConstBytes;
}
namespace perfetto {
namespace trace_processor {
class FieldDescriptor {
public:
FieldDescriptor(std::string name,
uint32_t number,
uint32_t type,
std::string raw_type_name,
bool is_repeated);
const std::string& name() const { return name_; }
uint32_t number() const { return number_; }
uint32_t type() const { return type_; }
const std::string& raw_type_name() const { return raw_type_name_; }
const std::string& resolved_type_name() const { return resolved_type_name_; }
bool is_repeated() const { return is_repeated_; }
void set_resolved_type_name(const std::string& resolved_type_name) {
resolved_type_name_ = resolved_type_name;
}
private:
std::string name_;
uint32_t number_;
uint32_t type_;
std::string raw_type_name_;
std::string resolved_type_name_;
bool is_repeated_;
};
class ProtoDescriptor {
public:
enum class Type { kEnum = 0, kMessage = 1 };
ProtoDescriptor(std::string package_name,
std::string full_name,
Type type,
base::Optional<uint32_t> parent_id);
void AddField(FieldDescriptor descriptor) {
PERFETTO_DCHECK(type_ == Type::kMessage);
fields_.emplace_back(std::move(descriptor));
}
void AddEnumValue(int32_t integer_representation,
std::string string_representation) {
PERFETTO_DCHECK(type_ == Type::kEnum);
enum_values_.emplace_back(integer_representation,
std::move(string_representation));
}
base::Optional<uint32_t> FindFieldIdxByName(const std::string& name) const {
PERFETTO_DCHECK(type_ == Type::kMessage);
auto it = std::find_if(
fields_.begin(), fields_.end(),
[name](const FieldDescriptor& desc) { return desc.name() == name; });
auto idx = static_cast<uint32_t>(std::distance(fields_.begin(), it));
return idx < fields_.size() ? base::Optional<uint32_t>(idx) : base::nullopt;
}
base::Optional<uint32_t> FindFieldIdxByTag(const uint16_t tag_number) const {
PERFETTO_DCHECK(type_ == Type::kMessage);
auto it = std::find_if(fields_.begin(), fields_.end(),
[tag_number](const FieldDescriptor& desc) {
return desc.number() == tag_number;
});
auto idx = static_cast<uint32_t>(std::distance(fields_.begin(), it));
return idx < fields_.size() ? base::Optional<uint32_t>(idx) : base::nullopt;
}
base::Optional<std::string> FindEnumString(const int32_t value) const {
PERFETTO_DCHECK(type_ == Type::kEnum);
auto it =
std::find_if(enum_values_.begin(), enum_values_.end(),
[value](const std::pair<int32_t, std::string>& enum_val) {
return enum_val.first == value;
});
return it == enum_values_.end() ? base::nullopt
: base::Optional<std::string>(it->second);
}
const std::string& package_name() const { return package_name_; }
const std::string& full_name() const { return full_name_; }
const std::vector<FieldDescriptor>& fields() const { return fields_; }
std::vector<FieldDescriptor>* mutable_fields() { return &fields_; }
private:
std::string package_name_;
std::string full_name_;
const Type type_;
base::Optional<uint32_t> parent_id_;
std::vector<FieldDescriptor> fields_;
std::vector<std::pair<int32_t, std::string>> enum_values_;
};
class DescriptorPool {
public:
util::Status AddFromFileDescriptorSet(
const uint8_t* file_descriptor_set_proto,
size_t size);
base::Optional<uint32_t> FindDescriptorIdx(
const std::string& full_name) const;
const std::vector<ProtoDescriptor>& descriptors() const {
return descriptors_;
}
private:
void AddNestedProtoDescriptors(const std::string& package_name,
base::Optional<uint32_t> parent_idx,
protozero::ConstBytes descriptor_proto);
void AddEnumProtoDescriptors(const std::string& package_name,
base::Optional<uint32_t> parent_idx,
protozero::ConstBytes descriptor_proto);
util::Status AddExtensionField(const std::string& package_name,
protozero::ConstBytes field_desc_proto);
// Recursively searches for the given short type in all parent messages
// and packages.
base::Optional<uint32_t> ResolveShortType(const std::string& parent_path,
const std::string& short_type);
std::vector<ProtoDescriptor> descriptors_;
};
} // namespace trace_processor
} // namespace perfetto
#endif // SRC_TRACE_PROCESSOR_UTIL_DESCRIPTORS_H_
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