From 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 03:47:29 +0200 Subject: Adding upstream version 115.8.0esr. Signed-off-by: Daniel Baumann --- dom/streams/StreamUtils.cpp | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 dom/streams/StreamUtils.cpp (limited to 'dom/streams/StreamUtils.cpp') diff --git a/dom/streams/StreamUtils.cpp b/dom/streams/StreamUtils.cpp new file mode 100644 index 0000000000..15ad80867d --- /dev/null +++ b/dom/streams/StreamUtils.cpp @@ -0,0 +1,34 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "StreamUtils.h" + +#include +#include "mozilla/dom/QueuingStrategyBinding.h" + +namespace mozilla::dom { + +// Streams Spec: 7.4 +// https://streams.spec.whatwg.org/#validate-and-normalize-high-water-mark +double ExtractHighWaterMark(const QueuingStrategy& aStrategy, + double aDefaultHWM, mozilla::ErrorResult& aRv) { + // Step 1. + if (!aStrategy.mHighWaterMark.WasPassed()) { + return aDefaultHWM; + } + + // Step 2. + double highWaterMark = aStrategy.mHighWaterMark.Value(); + + // Step 3. + if (std::isnan(highWaterMark) || highWaterMark < 0) { + aRv.ThrowRangeError("Invalid highWaterMark"); + return 0.0; + } + + // Step 4. + return highWaterMark; +} + +} // namespace mozilla::dom -- cgit v1.2.3