84c48ae751
As of this CL, Attribute no longer implements RTCStatsMemberInterface and a member no longer owns knowing its own name. The attribute knows the name because we pass it down at construction time. To achieve this, the WEBRTC_RTCSTATS_IMPL() macro is updated to take AttributeInits instead of raw member pointers, i.e. (name, ptr) pairs. By constructing RTCStatsMember<T> without a name parameter, it does the same thing as the absl::optional<T> constructor. So RTCStatsMember<T>'s days are numbered! Bug: webrtc:15164 Change-Id: I560c0134bae1c2d7218426a1576425ecc1b677a7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/334203 Commit-Queue: Henrik Boström <hbos@webrtc.org> Reviewed-by: Evan Shrubsole <eshr@google.com> Cr-Commit-Position: refs/heads/main@{#41540}
95 lines
2.5 KiB
C++
95 lines
2.5 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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#include "api/stats/attribute.h"
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#include "absl/types/variant.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace {
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struct VisitIsSequence {
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// Any type of vector is a sequence.
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template <typename T>
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bool operator()(const RTCStatsMember<std::vector<T>>* attribute) {
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return true;
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}
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// Any other type is not.
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template <typename T>
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bool operator()(const RTCStatsMember<T>* attribute) {
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return false;
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}
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};
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struct VisitIsEqual {
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template <typename T>
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bool operator()(const RTCStatsMember<T>* attribute) {
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if (!other.holds_alternative<T>()) {
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return false;
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}
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absl::optional<T> attribute_as_optional =
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attribute->has_value() ? absl::optional<T>(attribute->value())
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: absl::nullopt;
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return attribute_as_optional == other.as_optional<T>();
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}
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const Attribute& other;
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};
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} // namespace
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const char* Attribute::name() const {
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return name_;
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}
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const Attribute::StatVariant& Attribute::as_variant() const {
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return attribute_;
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}
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bool Attribute::has_value() const {
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return absl::visit([](const auto* attr) { return attr->has_value(); },
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attribute_);
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}
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bool Attribute::is_sequence() const {
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return absl::visit(VisitIsSequence(), attribute_);
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}
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bool Attribute::is_string() const {
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return absl::holds_alternative<const RTCStatsMember<std::string>*>(
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attribute_);
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}
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std::string Attribute::ValueToString() const {
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return absl::visit([](const auto* attr) { return attr->ValueToString(); },
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attribute_);
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}
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std::string Attribute::ValueToJson() const {
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return absl::visit([](const auto* attr) { return attr->ValueToJson(); },
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attribute_);
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}
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bool Attribute::operator==(const Attribute& other) const {
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return absl::visit(VisitIsEqual{.other = other}, attribute_);
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}
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bool Attribute::operator!=(const Attribute& other) const {
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return !(*this == other);
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}
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AttributeInit::AttributeInit(const char* name,
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const Attribute::StatVariant& variant)
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: name(name), variant(variant) {}
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} // namespace webrtc
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