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How to use defaultWriterLockException method in wpt

Best JavaScript code snippet using wpt

writable.js

Source:writable.js

...372      if (IsWritableStreamDefaultWriter(this) === false) {373        throw defaultWriterBrandCheckException('desiredSize');374      }375      if (this[kOwnerWritableStream] === undefined) {376        throw defaultWriterLockException('desiredSize');377      }378      return WritableStreamDefaultWriterGetDesiredSize(this);379    }380    get ready() {381      if (IsWritableStreamDefaultWriter(this) === false) {382        return Promise.reject(defaultWriterBrandCheckException('ready'));383      }384      return this[kReadyPromise];385    }386    abort(reason) {387      if (IsWritableStreamDefaultWriter(this) === false) {388        return Promise.reject(defaultWriterBrandCheckException('abort'));389      }390      if (this[kOwnerWritableStream] === undefined) {391        return Promise.reject(defaultWriterLockException('abort'));392      }393      return WritableStreamDefaultWriterAbort(this, reason);394    }395    close() {396      if (IsWritableStreamDefaultWriter(this) === false) {397        return Promise.reject(defaultWriterBrandCheckException('close'));398      }399      const stream = this[kOwnerWritableStream];400      if (stream === undefined) {401        return Promise.reject(defaultWriterLockException('close'));402      }403      if (WritableStreamCloseQueuedOrInFlight(stream) === true) {404        return Promise.reject(new TypeError('cannot close an already-closing stream'));405      }406      return WritableStreamDefaultWriterClose(this);407    }408    releaseLock() {409      if (IsWritableStreamDefaultWriter(this) === false) {410        throw defaultWriterBrandCheckException('releaseLock');411      }412      const stream = this[kOwnerWritableStream];413      if (stream === undefined) {414        return;415      }416      assert(stream[kWriter] !== undefined);417      WritableStreamDefaultWriterRelease(this);418    }419    write(chunk) {420      if (IsWritableStreamDefaultWriter(this) === false) {421        return Promise.reject(defaultWriterBrandCheckException('write'));422      }423      if (this[kOwnerWritableStream] === undefined) {424        return Promise.reject(defaultWriterLockException('write to'));425      }426      return WritableStreamDefaultWriterWrite(this, chunk);427    }428  }429  // Abstract operations for the WritableStreamDefaultWriter.430  function IsWritableStreamDefaultWriter(x) {431    if (!typeIsObject(x)) {432      return false;433    }434    if (!Object.prototype.hasOwnProperty.call(x, kOwnerWritableStream)) {435      return false;436    }437    return true;438  }439  // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.440  function WritableStreamDefaultWriterAbort(writer, reason) {441    const stream = writer[kOwnerWritableStream];442    assert(stream !== undefined);443    return WritableStreamAbort(stream, reason);444  }445  function WritableStreamDefaultWriterClose(writer) {446    const stream = writer[kOwnerWritableStream];447    assert(stream !== undefined);448    const state = stream[kState];449    if (state === 'closed' || state === 'errored') {450      return Promise.reject(new TypeError(451        `The stream (in ${state} state) is not in the writable state and cannot be closed`,452      ));453    }454    assert(state === 'writable' || state === 'erroring');455    assert(WritableStreamCloseQueuedOrInFlight(stream) === false);456    const promise = new Promise((resolve, reject) => {457      const closeRequest = {458        _resolve: resolve,459        _reject: reject,460      };461      stream[kCloseRequest] = closeRequest;462    });463    if (stream[kBackpressure] === true && state === 'writable') {464      defaultWriterReadyPromiseResolve(writer);465    }466    WritableStreamDefaultControllerClose(stream[kWritableStreamController]);467    return promise;468  }469  function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) {470    const stream = writer[kOwnerWritableStream];471    assert(stream !== undefined);472    const state = stream[kState];473    if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {474      return Promise.resolve();475    }476    if (state === 'errored') {477      return Promise.reject(stream[kStoredError]);478    }479    assert(state === 'writable' || state === 'erroring');480    return WritableStreamDefaultWriterClose(writer);481  }482  function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) {483    if (writer[kClosedPromiseState] === 'pending') {484      defaultWriterClosedPromiseReject(writer, error);485    } else {486      defaultWriterClosedPromiseResetToRejected(writer, error);487    }488    writer[kClosedPromise].catch(() => {});489  }490  function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) {491    if (writer[kReadyPromiseState] === 'pending') {492      defaultWriterReadyPromiseReject(writer, error);493    } else {494      defaultWriterReadyPromiseResetToRejected(writer, error);495    }496    writer[kReadyPromise].catch(() => {});497  }498  function WritableStreamDefaultWriterGetDesiredSize(writer) {499    const stream = writer[kOwnerWritableStream];500    const state = stream[kState];501    if (state === 'errored' || state === 'erroring') {502      return null;503    }504    if (state === 'closed') {505      return 0;506    }507    return WritableStreamDefaultControllerGetDesiredSize(stream[kWritableStreamController]);508  }509  function WritableStreamDefaultWriterRelease(writer) {510    const stream = writer[kOwnerWritableStream];511    assert(stream !== undefined);512    assert(stream[kWriter] === writer);513    const releasedError = new TypeError(514      'Writer was released and can no longer be used to monitor the stream\'s closedness',515    );516    WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);517    // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not518    // rejected until afterwards. This means that simply testing state will not work.519    WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);520    stream[kWriter] = undefined;521    writer[kOwnerWritableStream] = undefined;522  }523  function WritableStreamDefaultWriterWrite(writer, chunk) {524    const stream = writer[kOwnerWritableStream];525    assert(stream !== undefined);526    const controller = stream[kWritableStreamController];527    const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);528    if (stream !== writer[kOwnerWritableStream]) {529      return Promise.reject(defaultWriterLockException('write to'));530    }531    const state = stream[kState];532    if (state === 'errored') {533      return Promise.reject(stream[kStoredError]);534    }535    if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {536      return Promise.reject(new TypeError('The stream is closing or closed and cannot be written to'));537    }538    if (state === 'erroring') {539      return Promise.reject(stream[kStoredError]);540    }541    assert(state === 'writable');542    const promise = WritableStreamAddWriteRequest(stream);543    WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);544    return promise;545  }546  class WritableStreamDefaultController {547    constructor() {548      throw new TypeError('WritableStreamDefaultController cannot be constructed explicitly');549    }550    error(e) {551      if (IsWritableStreamDefaultController(this) === false) {552        throw new TypeError(553          'WritableStreamDefaultController.prototype.error can only be used on a WritableStreamDefaultController',554        );555      }556      const state = this[kControlledWritableStream][kState];557      if (state !== 'writable') {558      // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so559      // just treat it as a no-op.560        return;561      }562      WritableStreamDefaultControllerError(this, e);563    }564    [AbortSteps](reason) {565      return this[kAbortAlgorithm](reason);566    }567    [ErrorSteps]() {568      ResetQueue(this);569    }570  }571  // Abstract operations implementing interface required by the WritableStream.572  function IsWritableStreamDefaultController(x) {573    if (!typeIsObject(x)) {574      return false;575    }576    if (!Object.prototype.hasOwnProperty.call(x, kControlledWritableStream)) {577      return false;578    }579    return true;580  }581  function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,582    abortAlgorithm, highWaterMark, sizeAlgorithm) {583    assert(IsWritableStream(stream) === true);584    assert(stream[kWritableStreamController] === undefined);585    controller[kControlledWritableStream] = stream;586    stream[kWritableStreamController] = controller;587    // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.588    controller[kQueue] = undefined;589    controller[kQueueTotalSize] = undefined;590    ResetQueue(controller);591    controller[kStarted] = false;592    controller[kStrategySizeAlgorithm] = sizeAlgorithm;593    controller[kStrategyHWM] = highWaterMark;594    controller[kWriteAlgorithm] = writeAlgorithm;595    controller[kCloseAlgorithm] = closeAlgorithm;596    controller[kAbortAlgorithm] = abortAlgorithm;597    const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);598    WritableStreamUpdateBackpressure(stream, backpressure);599    const startResult = startAlgorithm();600    const startPromise = Promise.resolve(startResult);601    startPromise.then(602      () => {603        assert(stream[kState] === 'writable' || stream[kState] === 'erroring');604        controller[kStarted] = true;605        WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);606      },607      (r) => {608        assert(stream[kState] === 'writable' || stream[kState] === 'erroring');609        controller[kStarted] = true;610        WritableStreamDealWithRejection(stream, r);611      },612    )613      .catch(rethrowAssertionErrorRejection);614  }615  function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) {616    assert(underlyingSink !== undefined);617    const controller = Object.create(WritableStreamDefaultController.prototype);618    function startAlgorithm() {619      return InvokeOrNoop(underlyingSink, 'start', [controller]);620    }621    const writeAlgorithm = CreateAlgorithmFromUnderlyingMethod(underlyingSink, 'write', 1, [controller]);622    const closeAlgorithm = CreateAlgorithmFromUnderlyingMethod(underlyingSink, 'close', 0, []);623    const abortAlgorithm = CreateAlgorithmFromUnderlyingMethod(underlyingSink, 'abort', 1, []);624    SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,625      abortAlgorithm, highWaterMark, sizeAlgorithm);626  }627  function WritableStreamDefaultControllerClose(controller) {628    EnqueueValueWithSize(controller, 'close', 0);629    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);630  }631  function WritableStreamDefaultControllerGetChunkSize(controller, chunk) {632    try {633      return controller[kStrategySizeAlgorithm](chunk);634    } catch (chunkSizeE) {635      WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);636      return 1;637    }638  }639  function WritableStreamDefaultControllerGetDesiredSize(controller) {640    return controller[kStrategyHWM] - controller[kQueueTotalSize];641  }642  function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) {643    const writeRecord = { chunk };644    try {645      EnqueueValueWithSize(controller, writeRecord, chunkSize);646    } catch (enqueueE) {647      WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);648      return;649    }650    const stream = controller[kControlledWritableStream];651    if (WritableStreamCloseQueuedOrInFlight(stream) === false && stream[kState] === 'writable') {652      const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);653      WritableStreamUpdateBackpressure(stream, backpressure);654    }655    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);656  }657  // Abstract operations for the WritableStreamDefaultController.658  function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) {659    const stream = controller[kControlledWritableStream];660    if (controller[kStarted] === false) {661      return;662    }663    if (stream[kInFlightWriteRequest] !== undefined) {664      return;665    }666    const state = stream[kState];667    if (state === 'closed' || state === 'errored') {668      return;669    }670    if (state === 'erroring') {671      WritableStreamFinishErroring(stream);672      return;673    }674    if (controller[kQueue].length === 0) {675      return;676    }677    const writeRecord = PeekQueueValue(controller);678    if (writeRecord === 'close') {679      WritableStreamDefaultControllerProcessClose(controller);680    } else {681      WritableStreamDefaultControllerProcessWrite(controller, writeRecord.chunk);682    }683  }684  function WritableStreamDefaultControllerErrorIfNeeded(controller, error) {685    if (controller[kControlledWritableStream][kState] === 'writable') {686      WritableStreamDefaultControllerError(controller, error);687    }688  }689  function WritableStreamDefaultControllerProcessClose(controller) {690    const stream = controller[kControlledWritableStream];691    WritableStreamMarkCloseRequestInFlight(stream);692    DequeueValue(controller);693    assert(controller[kQueue].length === 0);694    const sinkClosePromise = controller[kCloseAlgorithm]();695    sinkClosePromise.then(696      () => {697        WritableStreamFinishInFlightClose(stream);698      },699      (reason) => {700        WritableStreamFinishInFlightCloseWithError(stream, reason);701      },702    )703      .catch(rethrowAssertionErrorRejection);704  }705  function WritableStreamDefaultControllerProcessWrite(controller, chunk) {706    const stream = controller[kControlledWritableStream];707    WritableStreamMarkFirstWriteRequestInFlight(stream);708    const sinkWritePromise = controller[kWriteAlgorithm](chunk);709    sinkWritePromise.then(710      () => {711        WritableStreamFinishInFlightWrite(stream);712        const state = stream[kState];713        assert(state === 'writable' || state === 'erroring');714        DequeueValue(controller);715        if (WritableStreamCloseQueuedOrInFlight(stream) === false && state === 'writable') {716          const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);717          WritableStreamUpdateBackpressure(stream, backpressure);718        }719        WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);720      },721      (reason) => {722        WritableStreamFinishInFlightWriteWithError(stream, reason);723      },724    )725      .catch(rethrowAssertionErrorRejection);726  }727  function WritableStreamDefaultControllerGetBackpressure(controller) {728    const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);729    return desiredSize <= 0;730  }731  // A client of WritableStreamDefaultController may use these functions directly to bypass state check.732  function WritableStreamDefaultControllerError(controller, error) {733    const stream = controller[kControlledWritableStream];734    assert(stream[kState] === 'writable');735    WritableStreamStartErroring(stream, error);736  }737  // Helper functions for the WritableStream.738  function streamBrandCheckException(name) {739    return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);740  }741  // Helper functions for the WritableStreamDefaultWriter.742  function defaultWriterBrandCheckException(name) {743    return new TypeError(744      `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`,745    );746  }747  function defaultWriterLockException(name) {748    return new TypeError(`Cannot ${name} a stream using a released writer`);749  }750  function defaultWriterClosedPromiseInitialize(writer) {751    writer[kClosedPromise] = new Promise((resolve, reject) => {752      writer[kClosedPromiseResolve] = resolve;753      writer[kClosedPromiseReject] = reject;754      writer[kClosedPromiseState] = 'pending';755    });756  }757  function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) {758    writer[kClosedPromise] = Promise.reject(reason);759    writer[kClosedPromiseResolve] = undefined;760    writer[kClosedPromiseReject] = undefined;761    writer[kClosedPromiseState] = 'rejected';...

writable-stream.js

Source:writable-stream.js

...185    if (IsWritableStreamDefaultWriter(this) === false) {186      throw defaultWriterBrandCheckException('desiredSize');187    }188    if (this._ownerWritableStream === undefined) {189      throw defaultWriterLockException('desiredSize');190    }191    return WritableStreamDefaultWriterGetDesiredSize(this);192  }193  get ready() {194    if (IsWritableStreamDefaultWriter(this) === false) {195      return Promise.reject(defaultWriterBrandCheckException('ready'));196    }197    return this._readyPromise;198  }199  abort(reason) {200    if (IsWritableStreamDefaultWriter(this) === false) {201      return Promise.reject(defaultWriterBrandCheckException('abort'));202    }203    if (this._ownerWritableStream === undefined) {204      return Promise.reject(defaultWriterLockException('abort'));205    }206    return WritableStreamDefaultWriterAbort(this, reason);207  }208  close() {209    if (IsWritableStreamDefaultWriter(this) === false) {210      return Promise.reject(defaultWriterBrandCheckException('close'));211    }212    const stream = this._ownerWritableStream;213    if (stream === undefined) {214      return Promise.reject(defaultWriterLockException('close'));215    }216    if (stream._state === 'closing') {217      return Promise.reject(new TypeError('cannot close an already-closing stream'));218    }219    return WritableStreamDefaultWriterClose(this);220  }221  releaseLock() {222    if (IsWritableStreamDefaultWriter(this) === false) {223      throw defaultWriterBrandCheckException('releaseLock');224    }225    const stream = this._ownerWritableStream;226    if (stream === undefined) {227      return;228    }229    assert(stream._writer !== undefined);230    WritableStreamDefaultWriterRelease(this);231  }232  write(chunk) {233    if (IsWritableStreamDefaultWriter(this) === false) {234      return Promise.reject(defaultWriterBrandCheckException('write'));235    }236    const stream = this._ownerWritableStream;237    if (stream === undefined) {238      return Promise.reject(defaultWriterLockException('write to'));239    }240    if (stream._state === 'closing') {241      return Promise.reject(new TypeError('Cannot write to an already-closed stream'));242    }243    return WritableStreamDefaultWriterWrite(this, chunk);244  }245}246// Abstract operations for the WritableStreamDefaultWriter.247function IsWritableStreamDefaultWriter(x) {248  if (!typeIsObject(x)) {249    return false;250  }251  if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {252    return false;253  }254  return true;255}256// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.257function WritableStreamDefaultWriterAbort(writer, reason) {258  const stream = writer._ownerWritableStream;259  assert(stream !== undefined);260  return WritableStreamAbort(stream, reason);261}262function WritableStreamDefaultWriterClose(writer) {263  const stream = writer._ownerWritableStream;264  assert(stream !== undefined);265  const state = stream._state;266  if (state === 'closed' || state === 'errored') {267    return Promise.reject(new TypeError(268      `The stream (in ${state} state) is not in the writable state and cannot be closed`));269  }270  assert(state === 'writable');271  const promise = WritableStreamAddWriteRequest(stream);272  if (WritableStreamDefaultControllerGetBackpressure(stream._writableStreamController) === true) {273    defaultWriterReadyPromiseResolve(writer);274  }275  stream._state = 'closing';276  WritableStreamDefaultControllerClose(stream._writableStreamController);277  return promise;278}279function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) {280  const stream = writer._ownerWritableStream;281  assert(stream !== undefined);282  const state = stream._state;283  if (state === 'closing' || state === 'closed') {284    return Promise.resolve();285  }286  if (state === 'errored') {287    return Promise.reject(stream._storedError);288  }289  assert(state === 'writable');290  return WritableStreamDefaultWriterClose(writer);291}292function WritableStreamDefaultWriterGetDesiredSize(writer) {293  const stream = writer._ownerWritableStream;294  const state = stream._state;295  if (state === 'errored') {296    return null;297  }298  if (state === 'closed') {299    return 0;300  }301  return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);302}303function WritableStreamDefaultWriterRelease(writer) {304  const stream = writer._ownerWritableStream;305  assert(stream !== undefined);306  assert(stream._writer === writer);307  const releasedError = new TypeError(308    'Writer was released and can no longer be used to monitor the stream\'s closedness');309  const state = stream._state;310  if (state === 'writable' || state === 'closing') {311    defaultWriterClosedPromiseReject(writer, releasedError);312  } else {313    defaultWriterClosedPromiseResetToRejected(writer, releasedError);314  }315  writer._closedPromise.catch(() => {});316  if (state === 'writable' &&317      WritableStreamDefaultControllerGetBackpressure(stream._writableStreamController) === true) {318    defaultWriterReadyPromiseReject(writer, releasedError);319  } else {320    defaultWriterReadyPromiseResetToRejected(writer, releasedError);321  }322  writer._readyPromise.catch(() => {});323  stream._writer = undefined;324  writer._ownerWritableStream = undefined;325}326function WritableStreamDefaultWriterWrite(writer, chunk) {327  const stream = writer._ownerWritableStream;328  assert(stream !== undefined);329  const state = stream._state;330  if (state === 'closed' || state === 'errored') {331    return Promise.reject(new TypeError(332      `The stream (in ${state} state) is not in the writable state and cannot be written to`));333  }334  assert(state === 'writable');335  const promise = WritableStreamAddWriteRequest(stream);336  WritableStreamDefaultControllerWrite(stream._writableStreamController, chunk);337  return promise;338}339class WritableStreamDefaultController {340  constructor(stream, underlyingSink, size, highWaterMark) {341    if (IsWritableStream(stream) === false) {342      throw new TypeError('WritableStreamDefaultController can only be constructed with a WritableStream instance');343    }344    if (stream._writableStreamController !== undefined) {345      throw new TypeError(346        'WritableStreamDefaultController instances can only be created by the WritableStream constructor');347    }348    this._controlledWritableStream = stream;349    this._underlyingSink = underlyingSink;350    this._queue = [];351    this._started = false;352    this._writing = false;353    const normalizedStrategy = ValidateAndNormalizeQueuingStrategy(size, highWaterMark);354    this._strategySize = normalizedStrategy.size;355    this._strategyHWM = normalizedStrategy.highWaterMark;356    const backpressure = WritableStreamDefaultControllerGetBackpressure(this);357    if (backpressure === true) {358      WritableStreamUpdateBackpressure(stream, backpressure);359    }360    const controller = this;361    const startResult = InvokeOrNoop(underlyingSink, 'start', [this]);362    Promise.resolve(startResult).then(363      () => {364        controller._started = true;365        WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);366      },367      r => {368        WritableStreamDefaultControllerErrorIfNeeded(controller, r);369      }370    )371    .catch(rethrowAssertionErrorRejection);372  }373  error(e) {374    if (IsWritableStreamDefaultController(this) === false) {375      throw new TypeError(376        'WritableStreamDefaultController.prototype.error can only be used on a WritableStreamDefaultController');377    }378    const state = this._controlledWritableStream._state;379    if (state === 'closed' || state === 'errored') {380      throw new TypeError(`The stream is ${state} and so cannot be errored`);381    }382    WritableStreamDefaultControllerError(this, e);383  }384}385// Abstract operations implementing interface required by the WritableStream.386function WritableStreamDefaultControllerAbort(controller, reason) {387  controller._queue = [];388  const sinkAbortPromise = PromiseInvokeOrFallbackOrNoop(controller._underlyingSink, 'abort', [reason],389                                                         'close', [controller]);390  return sinkAbortPromise.then(() => undefined);391}392function WritableStreamDefaultControllerClose(controller) {393  EnqueueValueWithSize(controller._queue, 'close', 0);394  WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);395}396function WritableStreamDefaultControllerGetDesiredSize(controller) {397  const queueSize = GetTotalQueueSize(controller._queue);398  return controller._strategyHWM - queueSize;399}400function WritableStreamDefaultControllerWrite(controller, chunk) {401  const stream = controller._controlledWritableStream;402  assert(stream._state === 'writable');403  let chunkSize = 1;404  if (controller._strategySize !== undefined) {405    try {406      chunkSize = controller._strategySize(chunk);407    } catch (chunkSizeE) {408      // TODO: Should we notify the sink of this error?409      WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);410      return;411    }412  }413  const writeRecord = { chunk };414  const lastBackpressure = WritableStreamDefaultControllerGetBackpressure(controller);415  try {416    EnqueueValueWithSize(controller._queue, writeRecord, chunkSize);417  } catch (enqueueE) {418    WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);419    return;420  }421  if (stream._state === 'writable') {422    const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);423    if (lastBackpressure !== backpressure) {424      WritableStreamUpdateBackpressure(stream, backpressure);425    }426  }427  WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);428}429// Abstract operations for the WritableStreamDefaultController.430function IsWritableStreamDefaultController(x) {431  if (!typeIsObject(x)) {432    return false;433  }434  if (!Object.prototype.hasOwnProperty.call(x, '_underlyingSink')) {435    return false;436  }437  return true;438}439function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) {440  if (controller._controlledWritableStream._state === 'closed' ||441      controller._controlledWritableStream._state === 'errored') {442    return;443  }444  if (controller._started === false) {445    return;446  }447  if (controller._writing === true) {448    return;449  }450  if (controller._queue.length === 0) {451    return;452  }453  const writeRecord = PeekQueueValue(controller._queue);454  if (writeRecord === 'close') {455    WritableStreamDefaultControllerProcessClose(controller);456  } else {457    WritableStreamDefaultControllerProcessWrite(controller, writeRecord.chunk);458  }459}460function WritableStreamDefaultControllerErrorIfNeeded(controller, e) {461  if (controller._controlledWritableStream._state === 'writable' ||462      controller._controlledWritableStream._state === 'closing') {463    WritableStreamDefaultControllerError(controller, e);464  }465}466function WritableStreamDefaultControllerProcessClose(controller) {467  const stream = controller._controlledWritableStream;468  assert(stream._state === 'closing', 'can\'t process final write record unless already closed');469  DequeueValue(controller._queue);470  assert(controller._queue.length === 0, 'queue must be empty once the final write record is dequeued');471  const sinkClosePromise = PromiseInvokeOrNoop(controller._underlyingSink, 'close', [controller]);472  sinkClosePromise.then(473    () => {474      if (stream._state !== 'closing') {475        return;476      }477      WritableStreamFulfillWriteRequest(stream);478      WritableStreamFinishClose(stream);479    },480    r => {481      WritableStreamDefaultControllerErrorIfNeeded(controller, r);482    }483  )484  .catch(rethrowAssertionErrorRejection);485}486function WritableStreamDefaultControllerProcessWrite(controller, chunk) {487  controller._writing = true;488  const sinkWritePromise = PromiseInvokeOrNoop(controller._underlyingSink, 'write', [chunk, controller]);489  sinkWritePromise.then(490    () => {491      const stream = controller._controlledWritableStream;492      const state = stream._state;493      if (state === 'errored' || state === 'closed') {494        return;495      }496      controller._writing = false;497      WritableStreamFulfillWriteRequest(stream);498      const lastBackpressure = WritableStreamDefaultControllerGetBackpressure(controller);499      DequeueValue(controller._queue);500      if (state !== 'closing') {501        const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);502        if (lastBackpressure !== backpressure) {503          WritableStreamUpdateBackpressure(controller._controlledWritableStream, backpressure);504        }505      }506      WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);507    },508    r => {509      WritableStreamDefaultControllerErrorIfNeeded(controller, r);510    }511  )512  .catch(rethrowAssertionErrorRejection);513}514function WritableStreamDefaultControllerGetBackpressure(controller) {515  const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);516  return desiredSize <= 0;517}518// A client of WritableStreamDefaultController may use these functions directly to bypass state check.519function WritableStreamDefaultControllerError(controller, e) {520  const stream = controller._controlledWritableStream;521  assert(stream._state === 'writable' || stream._state === 'closing');522  WritableStreamError(stream, e);523  controller._queue = [];524}525// Helper functions for the WritableStream.526function streamBrandCheckException(name) {527  return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);528}529// Helper functions for the WritableStreamDefaultWriter.530function defaultWriterBrandCheckException(name) {531  return new TypeError(532    `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);533}534function defaultWriterLockException(name) {535  return new TypeError('Cannot ' + name + ' a stream using a released writer');536}537function defaultWriterClosedPromiseInitialize(writer) {538  writer._closedPromise = new Promise((resolve, reject) => {539    writer._closedPromise_resolve = resolve;540    writer._closedPromise_reject = reject;541  });542}543function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) {544  writer._closedPromise = Promise.reject(reason);545  writer._closedPromise_resolve = undefined;546  writer._closedPromise_reject = undefined;547}548function defaultWriterClosedPromiseInitializeAsResolved(writer) {...

WritableStreamDefaultWriter-impl.js

Source:WritableStreamDefaultWriter-impl.js

...10    return this._closedPromise;11  }12  get desiredSize() {13    if (this._stream === undefined) {14      throw defaultWriterLockException('desiredSize');15    }16    return aos.WritableStreamDefaultWriterGetDesiredSize(this);17  }18  get ready() {19    return this._readyPromise;20  }21  abort(reason) {22    if (this._stream === undefined) {23      return promiseRejectedWith(defaultWriterLockException('abort'));24    }25    return aos.WritableStreamDefaultWriterAbort(this, reason);26  }27  close() {28    const stream = this._stream;29    if (stream === undefined) {30      return promiseRejectedWith(defaultWriterLockException('close'));31    }32    if (aos.WritableStreamCloseQueuedOrInFlight(stream) === true) {33      return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));34    }35    return aos.WritableStreamDefaultWriterClose(this);36  }37  releaseLock() {38    const stream = this._stream;39    if (stream === undefined) {40      return;41    }42    assert(stream._writer !== undefined);43    aos.WritableStreamDefaultWriterRelease(this);44  }45  write(chunk) {46    if (this._stream === undefined) {47      return promiseRejectedWith(defaultWriterLockException('write to'));48    }49    return aos.WritableStreamDefaultWriterWrite(this, chunk);50  }51};52function defaultWriterLockException(name) {53  return new TypeError('Cannot ' + name + ' a stream using a released writer');...

Using AI Code Generation

1var wptLockException = require('wptLockException');2var wptLockExceptionObj = new wptLockException();3var defaultWriterLockExceptionObj = wptLockExceptionObj.defaultWriterLockException();4console.log(defaultWriterLockExceptionObj);5{ message: 'Writer lock exception', name: 'WriterLockException', code: 0 }6wptLockException.defaultReaderLockException()7wptLockException.defaultWriterLockException()

Using AI Code Generation

1importClass(Packages.com.ibm.workplace.wcm.api.WCMException);2importClass(Packages.com.ibm.workplace.wcm.api.WCMContent);3importClass(Packages.com.ibm.workplace.wcm.api.WCMContentManager);4importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItem);5importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersion);6importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionCollection);7importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionList);8importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionManager);9importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadata);10importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);11importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);12importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);13importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);14importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);15importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);16importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);17importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);18importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);19importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);20importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);21importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);22importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);23importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);24importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);25importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);26importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);27importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);28importClass(Packages

Using AI Code Generation

1importClass(java.lang.System);2importClass(java.io.File);3importClass(java.io.FileOutputStream);4importClass(java.io.IOException);5importClass(java.io.FileNotFoundException);6importClass(java.io.RandomAccessFile);7importClass(java.nio.channels.FileChannel);8importClass(java.nio.channels.FileLock);9var file = new File("test.txt");10var fileOutStream = new FileOutputStream(file);11var fileChannel = fileOutStream.getChannel();12var fileLock = fileChannel.lock();13System.out.println(fileLock.toString());14fileLock.release();15fileChannel.close();16fileOutStream.close();17importClass(java.lang.System);18importClass(java.io.File);19importClass(java.io.FileOutputStream);20importClass(java.io.IOException);21importClass(java.io.FileNotFoundException);22importClass(java.io.RandomAccessFile);23importClass(java.nio.channels.FileChannel);24importClass(java.nio.channels.FileLock);25var file = new File("test.txt");26var fileOutStream = new FileOutputStream(file);27var fileChannel = fileOutStream.getChannel();28var fileLock = fileChannel.lock();29System.out.println(fileLock.toString());30fileLock.release();31fileChannel.close();32fileOutStream.close();33importClass(java.lang.System);34importClass(java.io.File);35importClass(java.io.FileOutputStream);36importClass(java.io.IOException);37importClass(java.io.FileNotFoundException);38importClass(java.io.RandomAccessFile);39importClass(java.nio.channels.FileChannel);40importClass(java.nio.channels.FileLock);41var file = new File("test.txt");42var fileOutStream = new FileOutputStream(file);43var fileChannel = fileOutStream.getChannel();44var fileLock = fileChannel.lock(0, 10, false);45System.out.println(fileLock.toString());46fileLock.release();47fileChannel.close();48fileOutStream.close();49importClass(java.lang.System);50importClass(java.io.File);51importClass(java.io.FileOutputStream);52importClass(java.io.IOException);53importClass(java.io.FileNotFoundException);54importClass(java.io.RandomAccessFile);55importClass(java.nio.channels.FileChannel);56importClass(java.nio.channels.FileLock);57var file = new File("test.txt");58var fileOutStream = new FileOutputStream(file);59var fileChannel = fileOutStream.getChannel();60var fileLock = fileChannel.lock(0, 10, false);61System.out.println(fileLock.toString());

Using AI Code Generation

1function test() {2    var exception = wpt.defaultWriterLockException;3    if (exception instanceof Object) {4        testPassed('defaultWriterLockException is an Object');5    } else {6        testFailed('defaultWriterLockException is not an Object');7    }8}9test();

Using AI Code Generation

1var wpt = require('wpt');2var wptObj = new wpt();3var defaultWriterLockException = wptObj.defaultWriterLockException();4console.log(defaultWriterLockException);5Example 2: Using defaultWriterLockException() method6var wpt = require('wpt');7var wptObj = new wpt();8var defaultWriterLockException = wptObj.defaultWriterLockException();9console.log(defaultWriterLockException);

Using AI Code Generation

1var wptools = require('wptools');2var fs = require("fs");3var file = fs.createWriteStream("lock.txt");4var file2 = fs.createWriteStream("lock2.txt");5var lock = wptools.defaultWriterLockException(file);6var lock2 = wptools.defaultWriterLockException(file2);7lock.lock();8lock2.lock();9lock.unlock();10lock2.unlock();11lock.lock();12lock2.lock();

Using AI Code Generation

1var wptools = require('wptools');2var wpt = new wptools();3wpt.defaultWriterLockException(function(err, data) {4  console.log(data);5});6{7}8var wptools = require('wptools');9var wpt = new wptools();10wpt.setDefaultWriterLockException(true, function(err, data) {11  console.log(data);12});13{14}15var wptools = require('wptools');16var wpt = new wptools();17wpt.getWriterLockException(function(err, data) {18  console.log(data);19});20{21}22var wptools = require('wptools');23var wpt = new wptools();24wpt.setWriterLockException(['

Using AI Code Generation

1var wptools = require('wptools');2var writerLockExceptionObj = wptools.defaultWriterLockException();3wptools.defaultWriterLockException(writerLockExceptionObj);4var getWriterLockExceptionObj = wptools.defaultWriterLockException();5console.log('getWriterLockExceptionObj = ' + getWriterLockExceptionObj);6var wptools = require('wptools');7var writerLockExceptionObj = wptools.defaultWriterLockException();8wptools.defaultWriterLockException(writerLockExceptionObj);

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