/* * Copyright (C) 2015-2016 Yusuke Suzuki <utatane.tea@gmail.com>. * Copyright (C) 2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ // 25.3.3.3 GeneratorResume ( generator, value ) // 25.3.3.4 GeneratorResumeAbrupt(generator, abruptCompletion) @globalPrivate function generatorResume(generator, sentValue, resumeMode) { "use strict"; let state = generator.@generatorState; let done = false; let value = @undefined; if (typeof state !== 'number') throw new @TypeError("|this| should be a generator"); if (state === @GeneratorStateExecuting) throw new @TypeError("Generator is executing"); if (state === @GeneratorStateCompleted) { if (resumeMode === @GeneratorResumeModeThrow) throw sentValue; done = true; if (resumeMode === @GeneratorResumeModeReturn) value = sentValue; } else { try { generator.@generatorState = @GeneratorStateExecuting; value = generator.@generatorNext.@call(generator.@generatorThis, generator, state, sentValue, resumeMode); if (generator.@generatorState === @GeneratorStateExecuting) { generator.@generatorState = @GeneratorStateCompleted; done = true; } } catch (error) { generator.@generatorState = @GeneratorStateCompleted; throw error; } } return { done, value }; } function next(value) { "use strict"; return @generatorResume(this, value, @GeneratorResumeModeNormal); } function return(value) { "use strict"; return @generatorResume(this, value, @GeneratorResumeModeReturn); } function throw(exception) { "use strict"; return @generatorResume(this, exception, @GeneratorResumeModeThrow); }