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523eff622e
With this CL the migration to absl::optional<T> is complete. Bug: webrtc:15164 Change-Id: I978d86833fbd39154ed9026206a02ea7496f8c4f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/335640 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Henrik Boström <hbos@webrtc.org> Reviewed-by: Evan Shrubsole <eshr@google.com> Cr-Commit-Position: refs/heads/main@{#41616}
94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
/*
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* Copyright 2024 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_STATS_ATTRIBUTE_H_
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#define API_STATS_ATTRIBUTE_H_
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/types/optional.h"
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#include "absl/types/variant.h"
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#include "rtc_base/checks.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// A light-weight wrapper of an RTCStats attribute, i.e. an individual metric of
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// type absl::optional<T>.
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class RTC_EXPORT Attribute {
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public:
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// All supported attribute types.
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typedef absl::variant<const absl::optional<bool>*,
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const absl::optional<int32_t>*,
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const absl::optional<uint32_t>*,
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const absl::optional<int64_t>*,
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const absl::optional<uint64_t>*,
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const absl::optional<double>*,
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const absl::optional<std::string>*,
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const absl::optional<std::vector<bool>>*,
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const absl::optional<std::vector<int32_t>>*,
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const absl::optional<std::vector<uint32_t>>*,
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const absl::optional<std::vector<int64_t>>*,
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const absl::optional<std::vector<uint64_t>>*,
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const absl::optional<std::vector<double>>*,
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const absl::optional<std::vector<std::string>>*,
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const absl::optional<std::map<std::string, uint64_t>>*,
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const absl::optional<std::map<std::string, double>>*>
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StatVariant;
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template <typename T>
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Attribute(const char* name, const absl::optional<T>* attribute)
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: name_(name), attribute_(attribute) {}
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const char* name() const;
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const StatVariant& as_variant() const;
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bool has_value() const;
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template <typename T>
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bool holds_alternative() const {
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return absl::holds_alternative<const absl::optional<T>*>(attribute_);
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}
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template <typename T>
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const absl::optional<T>& as_optional() const {
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RTC_CHECK(holds_alternative<T>());
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return *absl::get<const absl::optional<T>*>(attribute_);
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}
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template <typename T>
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const T& get() const {
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RTC_CHECK(holds_alternative<T>());
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RTC_CHECK(has_value());
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return absl::get<const absl::optional<T>*>(attribute_)->value();
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}
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bool is_sequence() const;
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bool is_string() const;
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std::string ToString() const;
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bool operator==(const Attribute& other) const;
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bool operator!=(const Attribute& other) const;
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private:
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const char* name_;
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StatVariant attribute_;
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};
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struct RTC_EXPORT AttributeInit {
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AttributeInit(const char* name, const Attribute::StatVariant& variant);
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const char* name;
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Attribute::StatVariant variant;
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};
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} // namespace webrtc
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#endif // API_STATS_ATTRIBUTE_H_
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