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How to use ReadableByteStreamControllerEnqueueChunkToQueue method in wpt

Best JavaScript code snippet using wpt

ReadableByteStreamInternals.js

Source:ReadableByteStreamInternals.js

1/*2 * Copyright (C) 2016 Canon Inc. All rights reserved.3 *4 * Redistribution and use in source and binary forms, with or without5 * modification, are permitted provided that the following conditions6 * are met:7 * 1. Redistributions of source code must retain the above copyright8 *    notice, this list of conditions and the following disclaimer.9 * 2. Redistributions in binary form must reproduce the above copyright10 *    notice, this list of conditions and the following disclaimer in the11 *    documentation and/or other materials provided with the distribution.12 *13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.24 */25// @conditional=ENABLE(READABLE_STREAM_API) && ENABLE(READABLE_BYTE_STREAM_API)26// @internal27function privateInitializeReadableByteStreamController(stream, underlyingByteSource, highWaterMark)28{29    "use strict";30    if (!@isReadableStream(stream))31        @throwTypeError("ReadableByteStreamController needs a ReadableStream");32    // readableStreamController is initialized with null value.33    if (stream.@readableStreamController !== null)34        @throwTypeError("ReadableStream already has a controller");35    this.@controlledReadableStream = stream;36    this.@underlyingByteSource = underlyingByteSource;37    this.@pullAgain = false;38    this.@pulling = false;39    @readableByteStreamControllerClearPendingPullIntos(this);40    this.@queue = [];41    this.@totalQueuedBytes = 0;42    this.@started = false;43    this.@closeRequested = false;44    let hwm = @Number(highWaterMark);45    if (@isNaN(hwm) || hwm < 0)46        @throwRangeError("highWaterMark value is negative or not a number");47    this.@strategyHWM = hwm;48    let autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;49    if (autoAllocateChunkSize !== @undefined) {50        autoAllocateChunkSize = @Number(autoAllocateChunkSize);51        if (autoAllocateChunkSize <= 0 || autoAllocateChunkSize === @Number.POSITIVE_INFINITY || autoAllocateChunkSize === @Number.NEGATIVE_INFINITY)52            @throwRangeError("autoAllocateChunkSize value is negative or equal to positive or negative infinity");53    }54    this.@autoAllocateChunkSize = autoAllocateChunkSize;55    this.@pendingPullIntos = [];56    const controller = this;57    const startResult = @promiseInvokeOrNoopNoCatch(underlyingByteSource, "start", [this]).@then(() => {58        controller.@started = true;59        @assert(!controller.@pulling);60        @assert(!controller.@pullAgain);61        @readableByteStreamControllerCallPullIfNeeded(controller);62    }, (error) => {63        if (stream.@state === @streamReadable)64            @readableByteStreamControllerError(controller, error);65    });66    this.@cancel = @readableByteStreamControllerCancel;67    this.@pull = @readableByteStreamControllerPull;68    return this;69}70function privateInitializeReadableStreamBYOBRequest(controller, view)71{72    "use strict";73    this.@associatedReadableByteStreamController = controller;74    this.@view = view;75}76function isReadableByteStreamController(controller)77{78    "use strict";79    // Same test mechanism as in isReadableStreamDefaultController (ReadableStreamInternals.js).80    // See corresponding function for explanations.81    return @isObject(controller) && !!controller.@underlyingByteSource;82}83function isReadableStreamBYOBRequest(byobRequest)84{85    "use strict";86    // Same test mechanism as in isReadableStreamDefaultController (ReadableStreamInternals.js).87    // See corresponding function for explanations.88    return @isObject(byobRequest) && !!byobRequest.@associatedReadableByteStreamController;89}90function isReadableStreamBYOBReader(reader)91{92    "use strict";93    // FIXME: Since BYOBReader is not yet implemented, always return false.94    // To be implemented at the same time as BYOBReader (see isReadableStreamDefaultReader95    // to apply same model).96    return false;97}98function readableByteStreamControllerCancel(controller, reason)99{100    "use strict";101    if (controller.@pendingPullIntos.length > 0)102        controller.@pendingPullIntos[0].bytesFilled = 0;103    controller.@queue = [];104    controller.@totalQueuedBytes = 0;105    return @promiseInvokeOrNoop(controller.@underlyingByteSource, "cancel", [reason]);106}107function readableByteStreamControllerError(controller, e)108{109    "use strict";110    @assert(controller.@controlledReadableStream.@state === @streamReadable);111    @readableByteStreamControllerClearPendingPullIntos(controller);112    controller.@queue = [];113    @readableStreamError(controller.@controlledReadableStream, e);114}115function readableByteStreamControllerClose(controller)116{117    "use strict";118    @assert(!controller.@closeRequested);119    @assert(controller.@controlledReadableStream.@state === @streamReadable);120    if (controller.@totalQueuedBytes > 0) {121        controller.@closeRequested = true;122        return;123    }124    if (controller.@pendingPullIntos.length > 0) {125        if (controller.@pendingPullIntos[0].bytesFilled > 0) {126            const e = new @TypeError("Close requested while there remain pending bytes");127            @readableByteStreamControllerError(controller, e);128            throw e;129        }130    }131    @readableStreamClose(controller.@controlledReadableStream);132}133function readableByteStreamControllerClearPendingPullIntos(controller)134{135    "use strict";136    // FIXME: To be implemented in conjunction with ReadableStreamBYOBRequest.137}138function readableByteStreamControllerGetDesiredSize(controller)139{140   "use strict";141   return controller.@strategyHWM - controller.@totalQueuedBytes;142}143function readableStreamHasBYOBReader(stream)144{145    "use strict";146    return stream.@reader !== @undefined && @isReadableStreamBYOBReader(stream.@reader);147}148function readableStreamHasDefaultReader(stream)149{150    "use strict";151    return stream.@reader !== @undefined && @isReadableStreamDefaultReader(stream.@reader);152}153function readableByteStreamControllerHandleQueueDrain(controller) {154    "use strict";155    @assert(controller.@controlledReadableStream.@state === @streamReadable);156    if (!controller.@totalQueuedBytes && controller.@closeRequested)157        @readableStreamClose(controller.@controlledReadableStream);158    else159        @readableByteStreamControllerCallPullIfNeeded(controller);160}161function readableByteStreamControllerPull(controller)162{163    "use strict";164    const stream = controller.@controlledReadableStream;165    @assert(@readableStreamHasDefaultReader(stream));166    if (controller.@totalQueuedBytes > 0) {167        @assert(stream.@reader.@readRequests.length === 0);168        const entry = controller.@queue.@shift();169        controller.@totalQueuedBytes -= entry.byteLength;170        @readableByteStreamControllerHandleQueueDrain(controller);171        let view;172        try {173            view = new @Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);174        } catch (error) {175            return @Promise.@reject(error);176        }177        return @Promise.@resolve({value: view, done: false});178    }179    if (controller.@autoAllocateChunkSize !== @undefined) {180        let buffer;181        try {182            buffer = new @ArrayBuffer(controller.@autoAllocateChunkSize);183        } catch (error) {184            return @Promise.@reject(error);185        }186        const pullIntoDescriptor = {187            buffer,188            byteOffset: 0,189            byteLength: controller.@autoAllocateChunkSize,190            bytesFilled: 0,191            elementSize: 1,192            ctor: @Uint8Array,193            readerType: 'default'194        };195        controller.@pendingPullIntos.@push(pullIntoDescriptor);196    }197    const promise = @readableStreamAddReadRequest(stream);198    @readableByteStreamControllerCallPullIfNeeded(controller);199    return promise;200}201function readableByteStreamControllerShouldCallPull(controller)202{203    "use strict";204    const stream = controller.@controlledReadableStream;205    if (stream.@state !== @streamReadable)206        return false;207    if (controller.@closeRequested)208        return false;209    if (!controller.@started)210        return false;211    if (@readableStreamHasDefaultReader(stream) && stream.@reader.@readRequests.length > 0)212        return true;213    if (@readableStreamHasBYOBReader(stream) && stream.@reader.@readIntoRequests.length > 0)214        return true;215    if (@readableByteStreamControllerGetDesiredSize(controller) > 0)216        return true;217    return false;218}219function readableByteStreamControllerCallPullIfNeeded(controller)220{221    "use strict";222    if (!@readableByteStreamControllerShouldCallPull(controller))223        return;224    if (controller.@pulling) {225        controller.@pullAgain = true;226        return;227    }228    @assert(!controller.@pullAgain);229    controller.@pulling = true;230    @promiseInvokeOrNoop(controller.@underlyingByteSource, "pull", [controller]).@then(() => {231        controller.@pulling = false;232        if (controller.@pullAgain) {233            controller.@pullAgain = false;234            @readableByteStreamControllerCallPullIfNeeded(controller);235        }236    }, (error) => {237        if (controller.@controlledReadableStream.@state === @streamReadable)238            @readableByteStreamControllerError(controller, error);239    });240}241function transferBufferToCurrentRealm(buffer)242{243    "use strict";244    // FIXME: Determine what should be done here exactly (what is already existing in current245    // codebase and what has to be added). According to spec, Transfer operation should be246    // performed in order to transfer buffer to current realm. For the moment, simply return247    // received buffer.248    return buffer;249}250function readableByteStreamControllerEnqueue(controller, chunk)251{252    "use strict";253    const stream = controller.@controlledReadableStream;254    @assert(!controller.@closeRequested);255    @assert(stream.@state === @streamReadable);256    const buffer = chunk.buffer;257    const byteOffset = chunk.byteOffset;258    const byteLength = chunk.byteLength;259    const transferredBuffer = @transferBufferToCurrentRealm(buffer);260    if (@readableStreamHasDefaultReader(stream)) {261        if (!stream.@reader.@readRequests.length)262            @readableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);263        else {264            @assert(!controller.@queue.length);265            let transferredView = new @Uint8Array(transferredBuffer, byteOffset, byteLength);266            @readableStreamFulfillReadRequest(stream, transferredView, false);267        }268        return;269    }270    if (@readableStreamHasBYOBReader(stream)) {271        // FIXME: To be implemented once ReadableStreamBYOBReader has been implemented (for the moment,272        // test cannot be true).273        @throwTypeError("ReadableByteStreamController enqueue operation has no support for BYOB reader");274        return;275    }276    @assert(!@isReadableStreamLocked(stream));277    @readableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);278}279function readableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength)280{281    "use strict";282    controller.@queue.@push({283        buffer: buffer,284        byteOffset: byteOffset,285        byteLength: byteLength286    });287    controller.@totalQueuedBytes += byteLength;...

Using AI Code Generation

1test(() => {2  const stream = new ReadableStream({3    start(controller) {4      controller.enqueue('a');5      controller.enqueue('b');6      controller.enqueue('c');7    }8  });9  const reader = stream.getReader();10  return Promise.all([11    reader.read().then(result => assert_equals(result.value, 'a')),12    reader.read().then(result => assert_equals(result.value, 'b')),13    reader.read().then(result => assert_equals(result.value, 'c'))14  ]);15}, 'ReadableStream with byte source: enqueueing chunks in the start method');16test(() => {17  const stream = new ReadableStream({18    start(controller) {19      controller.enqueue(new Uint8Array([1]));20      controller.enqueue(new Uint8Array([2]));21      controller.enqueue(new Uint8Array([3]));22    }23  });24  const reader = stream.getReader();25  return Promise.all([26    reader.read().then(result => assert_array_equals(result.value, [1])),27    reader.read().then(result => assert_array_equals(result.value, [2])),28    reader.read().then(result => assert_array_equals(result.value, [3]))29  ]);30}, 'ReadableStream with byte source: enqueueing Uint8Arrays in the start method');31test(() => {32  const stream = new ReadableStream({33    start(controller) {34      controller.enqueue('a');35      controller.enqueue('b');36      controller.enqueue('c');37    }38  });39  const reader = stream.getReader();40  return Promise.all([41    reader.read().then(result => assert_equals(result.value, 'a')),42    reader.read().then(result => assert_equals(result.value, 'b')),43    reader.read().then(result => assert_equals(result.value, 'c'))44  ]);45}, 'ReadableStream with byte source: enqueueing chunks in the start method');46test(() => {47  const stream = new ReadableStream({48    start(controller) {49      controller.enqueue(new Uint8Array([1]));50      controller.enqueue(new Uint8Array([2]));51      controller.enqueue(new Uint8Array([3]));52    }53  });

Using AI Code Generation

1test(function() {2  var rs = new ReadableStream();3  var controller = rs.getController();4  var chunk = new Uint8Array([1, 2, 3]);5  ReadableByteStreamControllerEnqueueChunkToQueue(controller, chunk, 0, 3);6  ReadableByteStreamControllerEnqueueChunkToQueue(controller, chunk, 0, 3);7  assert_equals(controller._queue.length, 2);8  assert_equals(controller._totalQueuedBytes, 6);9}, 'ReadableByteStreamControllerEnqueueChunkToQueue should enqueue the given chunk to the queue of the given controller.');10controller._queue = [];

Using AI Code Generation

1test(() => {2  const rs = new ReadableStream();3  const reader = rs.getReader();4  const controller = rs.[[readableStreamController]];5  const chunk = 'a';6  controller.[[queueTotalSize]] = 0;7  controller.[[queue]] = [];8  ReadableByteStreamControllerEnqueueChunkToQueue(controller, chunk, 1, 1);9  assert_array_equals(controller.[[queue]], [chunk]);10  assert_equals(controller.[[queueTotalSize]], 1);11}, 'ReadableByteStreamControllerEnqueueChunkToQueue enqueues a chunk to the queue');12test(() => {13  const rs = new ReadableStream();14  const reader = rs.getReader();15  const controller = rs.[[readableStreamController]];16  const pullIntoDescriptor = {17    buffer: new ArrayBuffer(4),18  };19  controller.[[queueTotalSize]] = 4;20  controller.[[queue]] = ['a', 'b', 'c', 'd'];21  ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor);22  assert_equals(pullIntoDescriptor.bytesFilled, 4);23  assert_array_equals(controller.[[queue]], []);24  assert_equals(controller.[[queueTotalSize]], 0);25}, 'ReadableByteStreamControllerFillPullIntoDescriptorFromQueue fills a pullIntoDescriptor from the queue');26test(() => {27  const rs = new ReadableStream();28  const reader = rs.getReader();29  const controller = rs.[[readableStreamController]];30  controller.[[queueTotalSize]] = 0;31  controller.[[queue]] = [];32  const result = ReadableByteStreamControllerHandleQueueDrain(controller);33  assert_true(result);34}, 'ReadableByteStreamControllerHandleQueueDrain returns true if the queue is empty');35test(() => {36  const rs = new ReadableStream();37  const reader = rs.getReader();

Using AI Code Generation

1byteStreamController.enqueue(chunk);2byteStreamController.error(error);3byteStreamController.close();4byteStreamController.callPullIfNeeded();5byteStreamController.clearAlgorithms();6byteStreamController.shouldCallPull();7byteStreamController.canCloseOrEnqueue();8byteStreamController.getDesiredSize();9byteStreamController.close();10byteStreamController.error(error);11byteStreamController.getTotalQueuedSize();12byteStreamController.shouldCallPull();13byteStreamController.canCloseOrEnqueue();14byteStreamController.getDesiredSize();15byteStreamController.close();16byteStreamController.error(error);17byteStreamController.getTotalQueuedSize();18byteStreamController.shouldCallPull();19byteStreamController.canCloseOrEnqueue();20byteStreamController.getDesiredSize();21byteStreamController.close();

Using AI Code Generation

1var rs = new ReadableStream({2  pull: function(c) {3    var chunk = new Uint8Array([1, 2, 3]);4    ReadableByteStreamControllerEnqueueChunkToQueue(c, chunk, 0, chunk.length);5  }6});7var reader = rs.getReader();8reader.read().then(function(result) {9  console.log(result.value);10});

Using AI Code Generation

1const { ReadableStream, ReadableByteStreamControllerEnqueueChunkToQueue } = require('stream/web');2const assert = require('assert');3const controller = new ReadableStream({4  pull(controller) {5    const chunk = new Uint8Array(10);6    ReadableByteStreamControllerEnqueueChunkToQueue(controller, chunk, 0, 10);7    assert.strictEqual(controller.byobRequest, undefined);8  }9}).getReader({ mode: 'byob' }).read(new Uint8Array(10));10assert.deepStrictEqual(chunk, new Uint8Array(10));

Using AI Code Generation

1var test = async_test("ReadableByteStreamControllerEnqueueChunkToQueue should throw a TypeError if controller is not an object");2var controller = null;3test.step(function() {4  assert_throws(new TypeError(), function() {5    ReadableByteStreamControllerEnqueueChunkToQueue(controller, null);6  }, "ReadableByteStreamControllerEnqueueChunkToQueue should throw a TypeError if controller is not an object");7  test.done();8});9function ReadableByteStreamControllerEnqueueChunkToQueue(controller, chunk) {10  if (!IsReadableByteStreamController(controller)) {11    throw new TypeError();12  }13  var stream = controller._controlledReadableByteStream;14  if (IsReadableStreamLocked(stream)) {15    throw new TypeError();16  }17  var buffer = chunk;18  if (!IsReadableByteStreamController(controller)) {19    throw new TypeError();20  }21  var stream = controller._controlledReadableByteStream;22  if (IsReadableStreamLocked(stream)) {23    throw new TypeError();24  }25  var buffer = chunk;26  var transferedBuffer = TransferArrayBuffer(buffer);27  if (controller._pendingPullIntos.length > 0) {28    var pullIntoDescriptor = controller._pendingPullIntos[0];29    if (pullIntoDescriptor._byteOffset + pullIntoDescriptor._bytesFilled === transferedBuffer.byteLength &&30        pullIntoDescriptor._bytesFilled < pullIntoDescriptor._elementSize) {31      pullIntoDescriptor._buffer = transferedBuffer;32      pullIntoDescriptor._bytesFilled += transferedBuffer.byteLength;33    }34    return;35  }36  var autoAllocateChunkSize = controller._autoAllocateChunkSize;37  if (autoAllocateChunkSize !== undefined) {38    var buffer = new ArrayBuffer(autoAllocateChunkSize);39    var pullIntoDescriptor = {40    };41    controller._pendingPullIntos.push(pullIntoDescriptor);42  }43  return;44}45function IsReadableByteStreamController(x) {46  if (!typeIsObject(x)) {

Using AI Code Generation

1function ReadableByteStreamControllerRespondInReadableState(controller, firstDescriptor, bytesWritten) {2  assert(controller._controlledReadableStream._state === 'readable');3  assert(firstDescriptor.bytesFilled + bytesWritten <= firstDescriptor.elementSize);4  firstDescriptor.bytesFilled += bytesWritten;5  if (firstDescriptor.bytesFilled < firstDescriptor.elementSize) {6    return;7  }8  ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableStream._readableStreamController,9                                                      firstDescriptor);10  ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);11}12function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor, bytesWritten) {13  assert(controller._controlledReadableStream._state === 'closed');14  assert(firstDescriptor.bytesFilled + bytesWritten <= firstDescriptor.elementSize);15  firstDescriptor.bytesFilled += bytesWritten;16  if (firstDescriptor.bytesFilled < firstDescriptor.elementSize) {17    return;18  }19  ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableStream._readableStreamController,20                                                      firstDescriptor);21  ReadableByteStreamControllerClearAlgorithms(controller);22  ReadableStreamClose(controller._controlledReadableStream);23}24function ReadableByteStreamControllerRespondInErroredState(controller, firstDescriptor, bytesWritten) {25  assert(controller._controlledReadableStream._state === 'errored');26  assert(firstDescriptor.bytesFilled + bytesWritten <= firstDescriptor.elementSize);27  firstDescriptor.bytesFilled += bytesWritten;28  if (firstDescriptor.bytesFilled < firstDescriptor.elementSize)

Using AI Code Generation

1var rs = new ReadableStream({2  start(controller) {3    ReadableByteStreamControllerEnqueueChunkToQueue(4      controller, new Uint8Array([1, 2, 3]), 0, 3);5  }6});7var stream = new ReadableStream({8  start(controller) {9    ReadableByteStreamControllerEnqueueChunkToQueue(10      controller, new Uint8Array([1, 2, 3]), 0, 3);11  }12});13var rs = new ReadableStream({14  start(controller) {15    var pullIntoDescriptor = {16      buffer: new ArrayBuffer(4),17    };18    ReadableByteStreamControllerFillHeadPullIntoDescriptor(19      controller, 3, pullIntoDescriptor);20  }21});22var stream = new ReadableStream({23  start(controller) {24    var pullIntoDescriptor = {25      buffer: new ArrayBuffer(4),26    };

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