92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
/*
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* Copyright (C) 2015 Canon Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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function initializeReadableStreamDefaultReader(stream)
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{
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"use strict";
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if (!@isReadableStream(stream))
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@throwTypeError("ReadableStreamDefaultReader needs a ReadableStream");
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if (@isReadableStreamLocked(stream))
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@throwTypeError("ReadableStream is locked");
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@readableStreamReaderGenericInitialize(this, stream);
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@putByIdDirectPrivate(this, "readRequests", []);
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return this;
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}
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function cancel(reason)
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{
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"use strict";
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if (!@isReadableStreamDefaultReader(this))
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return @Promise.@reject(@makeThisTypeError("ReadableStreamDefaultReader", "cancel"));
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if (!@getByIdDirectPrivate(this, "ownerReadableStream"))
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return @Promise.@reject(@makeTypeError("cancel() called on a reader owned by no readable stream"));
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return @readableStreamReaderGenericCancel(this, reason);
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}
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function read()
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{
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"use strict";
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if (!@isReadableStreamDefaultReader(this))
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return @Promise.@reject(@makeThisTypeError("ReadableStreamDefaultReader", "read"));
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if (!@getByIdDirectPrivate(this, "ownerReadableStream"))
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return @Promise.@reject(@makeTypeError("read() called on a reader owned by no readable stream"));
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return @readableStreamDefaultReaderRead(this);
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}
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function releaseLock()
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{
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"use strict";
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if (!@isReadableStreamDefaultReader(this))
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throw @makeThisTypeError("ReadableStreamDefaultReader", "releaseLock");
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if (!@getByIdDirectPrivate(this, "ownerReadableStream"))
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return;
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if (@getByIdDirectPrivate(this, "readRequests").length)
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@throwTypeError("There are still pending read requests, cannot release the lock");
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@readableStreamReaderGenericRelease(this);
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}
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@getter
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function closed()
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{
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"use strict";
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if (!@isReadableStreamDefaultReader(this))
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return @Promise.@reject(@makeGetterTypeError("ReadableStreamDefaultReader", "closed"));
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return @getByIdDirectPrivate(this, "closedPromiseCapability").@promise;
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}
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