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37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
// Copyright (C) 2015 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: >
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When a `yield` token appears within the DestructuringAssignmentTarget of
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an AssignmentRestElement and within the body of a generator function, it
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should behave as a YieldExpression.
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es6id: 12.14.5
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features: [generators]
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---*/
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var value = [33, 44, 55];
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var x = {};
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var assignmentResult, iterationResult, iter;
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iter = (function*() {
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assignmentResult = [...x[yield]] = value;
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}());
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iterationResult = iter.next();
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assert.sameValue(assignmentResult, undefined);
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assert.sameValue(iterationResult.value, undefined);
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assert.sameValue(iterationResult.done, false);
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assert.sameValue(x.prop, undefined);
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iterationResult = iter.next('prop');
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assert.sameValue(assignmentResult, value);
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assert.sameValue(iterationResult.value, undefined);
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assert.sameValue(iterationResult.done, true);
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assert.sameValue(x.prop.length, 3);
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assert.sameValue(x.prop[0], 33);
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assert.sameValue(x.prop[1], 44);
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assert.sameValue(x.prop[2], 55);
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