forked from mirrors/gecko-dev
2616cac8b3
nsIMutable is used only by DOM Blob/File. But Blobs are immutable by spec. FileBlobImpl has a couple of lazy member values, but those are called when the object is cloned in order to be sent to a different thread/process. Differential Revision: https://phabricator.services.mozilla.com/D58946 --HG-- extra : moz-landing-system : lando
36 lines
1.1 KiB
C++
36 lines
1.1 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 "EmptyBlobImpl.h"
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#include "nsStringStream.h"
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namespace mozilla {
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namespace dom {
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already_AddRefed<BlobImpl> EmptyBlobImpl::CreateSlice(
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uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
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ErrorResult& aRv) {
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MOZ_ASSERT(!aStart && !aLength);
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RefPtr<BlobImpl> impl = new EmptyBlobImpl(aContentType);
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return impl.forget();
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}
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void EmptyBlobImpl::CreateInputStream(nsIInputStream** aStream,
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ErrorResult& aRv) {
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if (NS_WARN_IF(!aStream)) {
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aRv.Throw(NS_ERROR_FAILURE);
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return;
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}
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nsresult rv = NS_NewCStringInputStream(aStream, EmptyCString());
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if (NS_WARN_IF(NS_FAILED(rv))) {
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aRv.Throw(rv);
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return;
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}
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}
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} // namespace dom
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} // namespace mozilla
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