| /* |
| * 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, state, generatorThis, sentValue, value, resumeMode) |
| { |
| "use strict"; |
| |
| var done = state === @GeneratorStateCompleted; |
| if (!done) { |
| try { |
| @putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateExecuting); |
| value = @getGeneratorInternalField(generator, @generatorFieldNext).@call(generatorThis, generator, state, sentValue, resumeMode, @getGeneratorInternalField(generator, @generatorFieldFrame)); |
| if (@getGeneratorInternalField(generator, @generatorFieldState) === @GeneratorStateExecuting) { |
| @putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateCompleted); |
| done = true; |
| } |
| } catch (error) { |
| @putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateCompleted); |
| throw error; |
| } |
| } |
| return { value, done }; |
| } |
| |
| function next(value) |
| { |
| "use strict"; |
| |
| if (!@isGenerator(this)) |
| @throwTypeError("|this| should be a generator"); |
| |
| var state = @getGeneratorInternalField(this, @generatorFieldState); |
| if (state === @GeneratorStateExecuting) |
| @throwTypeError("Generator is executing"); |
| |
| return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), value, @undefined, @GeneratorResumeModeNormal); |
| } |
| |
| function return(value) |
| { |
| "use strict"; |
| |
| if (!@isGenerator(this)) |
| @throwTypeError("|this| should be a generator"); |
| |
| var state = @getGeneratorInternalField(this, @generatorFieldState); |
| if (state === @GeneratorStateExecuting) |
| @throwTypeError("Generator is executing"); |
| |
| return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), value, value, @GeneratorResumeModeReturn); |
| } |
| |
| function throw(exception) |
| { |
| "use strict"; |
| |
| if (!@isGenerator(this)) |
| @throwTypeError("|this| should be a generator"); |
| |
| var state = @getGeneratorInternalField(this, @generatorFieldState); |
| if (state === @GeneratorStateExecuting) |
| @throwTypeError("Generator is executing"); |
| |
| if (state === @GeneratorStateCompleted) |
| throw exception; |
| |
| return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), exception, @undefined, @GeneratorResumeModeThrow); |
| } |