Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/third_party/libwebrtc/rtc_base/strong_alias.h b/third_party/libwebrtc/rtc_base/strong_alias.h
new file mode 100644
index 0000000000..3f45113f63
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/strong_alias.h
@@ -0,0 +1,76 @@
+/*
+ *  Copyright 2019 The Chromium Authors. All rights reserved.
+ *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#ifndef RTC_BASE_STRONG_ALIAS_H_
+#define RTC_BASE_STRONG_ALIAS_H_
+
+#include <type_traits>
+#include <utility>
+
+namespace webrtc {
+
+// This is a copy of
+// https://source.chromium.org/chromium/chromium/src/+/main:base/types/strong_alias.h
+// as the API (and internals) are using type-safe integral identifiers, but this
+// library can't depend on that file. The ostream operator has been removed
+// per WebRTC library conventions, and the underlying type is exposed.
+
+template <typename TagType, typename TheUnderlyingType>
+class StrongAlias {
+ public:
+  using UnderlyingType = TheUnderlyingType;
+  constexpr StrongAlias() = default;
+  constexpr explicit StrongAlias(const UnderlyingType& v) : value_(v) {}
+  constexpr explicit StrongAlias(UnderlyingType&& v) noexcept
+      : value_(std::move(v)) {}
+
+  constexpr UnderlyingType* operator->() { return &value_; }
+  constexpr const UnderlyingType* operator->() const { return &value_; }
+
+  constexpr UnderlyingType& operator*() & { return value_; }
+  constexpr const UnderlyingType& operator*() const& { return value_; }
+  constexpr UnderlyingType&& operator*() && { return std::move(value_); }
+  constexpr const UnderlyingType&& operator*() const&& {
+    return std::move(value_);
+  }
+
+  constexpr UnderlyingType& value() & { return value_; }
+  constexpr const UnderlyingType& value() const& { return value_; }
+  constexpr UnderlyingType&& value() && { return std::move(value_); }
+  constexpr const UnderlyingType&& value() const&& { return std::move(value_); }
+
+  constexpr explicit operator const UnderlyingType&() const& { return value_; }
+
+  constexpr bool operator==(const StrongAlias& other) const {
+    return value_ == other.value_;
+  }
+  constexpr bool operator!=(const StrongAlias& other) const {
+    return value_ != other.value_;
+  }
+  constexpr bool operator<(const StrongAlias& other) const {
+    return value_ < other.value_;
+  }
+  constexpr bool operator<=(const StrongAlias& other) const {
+    return value_ <= other.value_;
+  }
+  constexpr bool operator>(const StrongAlias& other) const {
+    return value_ > other.value_;
+  }
+  constexpr bool operator>=(const StrongAlias& other) const {
+    return value_ >= other.value_;
+  }
+
+ protected:
+  UnderlyingType value_;
+};
+
+}  // namespace webrtc
+
+#endif  // RTC_BASE_STRONG_ALIAS_H_