95 lines
3.8 KiB
JavaScript
95 lines
3.8 KiB
JavaScript
/*
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* Copyright (C) 2015-2016 Yusuke Suzuki <utatane.tea@gmail.com>.
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* Copyright (C) 2016 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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// 25.3.3.3 GeneratorResume ( generator, value )
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// 25.3.3.4 GeneratorResumeAbrupt(generator, abruptCompletion)
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@globalPrivate
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function generatorResume(generator, state, generatorThis, sentValue, value, resumeMode)
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{
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"use strict";
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var done = state === @GeneratorStateCompleted;
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if (!done) {
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try {
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@putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateExecuting);
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value = @getGeneratorInternalField(generator, @generatorFieldNext).@call(generatorThis, generator, state, sentValue, resumeMode, @getGeneratorInternalField(generator, @generatorFieldFrame));
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if (@getGeneratorInternalField(generator, @generatorFieldState) === @GeneratorStateExecuting) {
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@putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateCompleted);
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done = true;
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}
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} catch (error) {
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@putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateCompleted);
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throw error;
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}
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}
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return { value, done };
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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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if (!@isGenerator(this))
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@throwTypeError("|this| should be a generator");
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var state = @getGeneratorInternalField(this, @generatorFieldState);
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if (state === @GeneratorStateExecuting)
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@throwTypeError("Generator is executing");
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return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), value, @undefined, @GeneratorResumeModeNormal);
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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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if (!@isGenerator(this))
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@throwTypeError("|this| should be a generator");
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var state = @getGeneratorInternalField(this, @generatorFieldState);
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if (state === @GeneratorStateExecuting)
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@throwTypeError("Generator is executing");
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return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), value, value, @GeneratorResumeModeReturn);
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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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if (!@isGenerator(this))
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@throwTypeError("|this| should be a generator");
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var state = @getGeneratorInternalField(this, @generatorFieldState);
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if (state === @GeneratorStateExecuting)
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@throwTypeError("Generator is executing");
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if (state === @GeneratorStateCompleted)
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throw exception;
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return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), exception, @undefined, @GeneratorResumeModeThrow);
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}
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