169 lines
6.0 KiB
JavaScript
169 lines
6.0 KiB
JavaScript
/*
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* Copyright (C) 2017 Oleksandr Skachkov <gskachkov@gmail.com>.
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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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 next(value)
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{
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"use strict";
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var promise = @newPromise();
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if (!@isObject(this) || !@isObject(@getByIdDirectPrivate(this, "syncIterator"))) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, @makeTypeError('Iterator is not an object.'));
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return promise;
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}
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var syncIterator = @getByIdDirectPrivate(this, "syncIterator");
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var nextMethod = @getByIdDirectPrivate(this, "nextMethod");
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try {
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var nextResult = @argumentCount() === 0 ? nextMethod.@call(syncIterator) : nextMethod.@call(syncIterator, value);
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var nextDone = !!nextResult.done;
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var nextValue = nextResult.value;
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@resolveWithoutPromise(nextValue,
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function (result) { @resolvePromiseWithFirstResolvingFunctionCallCheck(promise, { value: result, done: nextDone }); },
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function (error) { @rejectPromiseWithFirstResolvingFunctionCallCheck(promise, error); });
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} catch (e) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, e);
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}
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return promise;
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}
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function return(value)
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{
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"use strict";
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var promise = @newPromise();
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if (!@isObject(this) || !@isObject(@getByIdDirectPrivate(this, "syncIterator"))) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, @makeTypeError('Iterator is not an object.'));
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return promise;
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}
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var syncIterator = @getByIdDirectPrivate(this, "syncIterator");
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var returnMethod;
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try {
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returnMethod = syncIterator.return;
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} catch (e) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, e);
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return promise;
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}
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if (@isUndefinedOrNull(returnMethod)) {
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@resolvePromiseWithFirstResolvingFunctionCallCheck(promise, { value, done: true });
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return promise;
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}
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try {
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var returnResult = @argumentCount() === 0 ? returnMethod.@call(syncIterator) : returnMethod.@call(syncIterator, value);
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if (!@isObject(returnResult)) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, @makeTypeError('Iterator result interface is not an object.'));
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return promise;
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}
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var resultDone = !!returnResult.done;
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var resultValue = returnResult.value;
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@resolveWithoutPromise(resultValue,
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function (result) { @resolvePromiseWithFirstResolvingFunctionCallCheck(promise, { value: result, done: resultDone }); },
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function (error) { @rejectPromiseWithFirstResolvingFunctionCallCheck(promise, error); });
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} catch (e) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, e);
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}
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return promise;
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}
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function throw(exception)
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{
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"use strict";
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var promise = @newPromise();
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if (!@isObject(this) || !@isObject(@getByIdDirectPrivate(this, "syncIterator"))) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, @makeTypeError('Iterator is not an object.'));
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return promise;
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}
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var syncIterator = @getByIdDirectPrivate(this, "syncIterator");
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var throwMethod;
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try {
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throwMethod = syncIterator.throw;
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} catch (e) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, e);
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return promise;
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}
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if (@isUndefinedOrNull(throwMethod)) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, exception);
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return promise;
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}
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try {
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var throwResult = @argumentCount() === 0 ? throwMethod.@call(syncIterator) : throwMethod.@call(syncIterator, exception);
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if (!@isObject(throwResult)) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, @makeTypeError('Iterator result interface is not an object.'));
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return promise;
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}
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var throwDone = !!throwResult.done;
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var throwValue = throwResult.value;
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@resolveWithoutPromise(throwValue,
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function (result) { @resolvePromiseWithFirstResolvingFunctionCallCheck(promise, { value: result, done: throwDone }); },
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function (error) { @rejectPromiseWithFirstResolvingFunctionCallCheck(promise, error); });
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} catch (e) {
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@rejectPromiseWithFirstResolvingFunctionCallCheck(promise, e);
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}
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return promise;
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}
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@globalPrivate
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function createAsyncFromSyncIterator(syncIterator, nextMethod)
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{
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"use strict";
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if (!@isObject(syncIterator))
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@throwTypeError('Only objects can be wrapped by async-from-sync wrapper');
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return new @AsyncFromSyncIterator(syncIterator, nextMethod);
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}
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@globalPrivate
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@constructor
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function AsyncFromSyncIterator(syncIterator, nextMethod)
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{
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"use strict";
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@putByIdDirectPrivate(this, "syncIterator", syncIterator);
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@putByIdDirectPrivate(this, "nextMethod", nextMethod);
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}
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