forked from mirrors/gecko-dev
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/PushUtil.h"
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#include "mozilla/dom/UnionTypes.h"
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namespace mozilla {
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namespace dom {
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/* static */
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bool PushUtil::CopyArrayBufferToArray(const ArrayBuffer& aBuffer,
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nsTArray<uint8_t>& aArray) {
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MOZ_ASSERT(aArray.IsEmpty());
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aBuffer.ComputeState();
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return aArray.SetCapacity(aBuffer.Length(), fallible) &&
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aArray.InsertElementsAt(0, aBuffer.Data(), aBuffer.Length(), fallible);
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}
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/* static */
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bool PushUtil::CopyArrayBufferViewToArray(const ArrayBufferView& aView,
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nsTArray<uint8_t>& aArray) {
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MOZ_ASSERT(aArray.IsEmpty());
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aView.ComputeState();
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return aArray.SetCapacity(aView.Length(), fallible) &&
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aArray.InsertElementsAt(0, aView.Data(), aView.Length(), fallible);
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}
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/* static */
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bool PushUtil::CopyBufferSourceToArray(
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const OwningArrayBufferViewOrArrayBuffer& aSource,
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nsTArray<uint8_t>& aArray) {
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if (aSource.IsArrayBuffer()) {
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return CopyArrayBufferToArray(aSource.GetAsArrayBuffer(), aArray);
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}
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if (aSource.IsArrayBufferView()) {
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return CopyArrayBufferViewToArray(aSource.GetAsArrayBufferView(), aArray);
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}
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MOZ_CRASH("Uninitialized union: expected buffer or view");
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}
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/* static */
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void PushUtil::CopyArrayToArrayBuffer(JSContext* aCx,
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const nsTArray<uint8_t>& aArray,
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JS::MutableHandle<JSObject*> aValue,
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ErrorResult& aRv) {
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if (aArray.IsEmpty()) {
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aValue.set(nullptr);
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return;
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}
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JS::Rooted<JSObject*> buffer(
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aCx, ArrayBuffer::Create(aCx, aArray.Length(), aArray.Elements()));
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if (NS_WARN_IF(!buffer)) {
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aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
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return;
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}
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aValue.set(buffer);
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}
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} // namespace dom
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} // namespace mozilla
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