yield-star-from-try.js (1841B)
1 // Copyright (C) 2015 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 es6id: 13.6.4.13 5 description: > 6 Control flow during body evaluation should honor `yield *` statements 7 within `try` blocks. 8 features: [generators] 9 ---*/ 10 11 function* values() { 12 yield 1; 13 yield 1; 14 } 15 var dataIterator = values(); 16 var controlIterator = (function*() { 17 for (var x of dataIterator) { 18 try { 19 i++; 20 yield * values(); 21 j++; 22 } catch (err) {} 23 k++; 24 } 25 26 l++; 27 })(); 28 var i = 0; 29 var j = 0; 30 var k = 0; 31 var l = 0; 32 33 controlIterator.next(); 34 assert.sameValue(i, 1, 'First iteration: pre-yield'); 35 assert.sameValue(j, 0, 'First iteration: post-yield'); 36 assert.sameValue(k, 0, 'First iteration: post-try'); 37 assert.sameValue(l, 0, 'First iteration: post-for-of'); 38 39 controlIterator.next(); 40 assert.sameValue(i, 1, 'Second iteration: pre-yield'); 41 assert.sameValue(j, 0, 'Second iteration: post-yield'); 42 assert.sameValue(k, 0, 'Second iteration: post-try'); 43 assert.sameValue(l, 0, 'Second iteration: post-for-of'); 44 45 controlIterator.next(); 46 assert.sameValue(i, 2, 'Third iteration: pre-yield'); 47 assert.sameValue(j, 1, 'Third iteration: post-yield'); 48 assert.sameValue(k, 1, 'Third iteration: post-try'); 49 assert.sameValue(l, 0, 'Third iteration: post-for-of'); 50 51 controlIterator.next(); 52 assert.sameValue(i, 2, 'Fourth iteration: pre-yield'); 53 assert.sameValue(j, 1, 'Fourth iteration: post-yield'); 54 assert.sameValue(k, 1, 'Fourth iteration: post-try'); 55 assert.sameValue(l, 0, 'Fourth iteration: post-for-of'); 56 57 controlIterator.next(); 58 assert.sameValue(i, 2, 'Fifth iteration: pre-yield'); 59 assert.sameValue(j, 2, 'Fifth iteration: post-yield'); 60 assert.sameValue(k, 2, 'Fifth iteration: post-try'); 61 assert.sameValue(l, 1, 'Fifth iteration: post-for-of'); 62 63 reportCompare(0, 0);