How to use ReadableByteStreamControllerEnqueueChunkToQueue method in wpt

Best JavaScript code snippet using wpt

ReadableByteStreamInternals.js

Source:ReadableByteStreamInternals.js Github

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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;...

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Using AI Code Generation

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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 });

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Using AI Code Generation

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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 = [];

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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();

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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();

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Using AI Code Generation

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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});

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Using AI Code Generation

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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));

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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)) {

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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)

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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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