cptn-decl-abrupt-empty.js (1429B)
1 // Copyright (C) 2016 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 es6id: 13.7.5.11 5 description: > 6 Completion value when head has a declaration and iteration is cancelled 7 info: | 8 IterationStatement : for ( var ForBinding in Expression ) Statement 9 10 1. Let keyResult be ForIn/OfHeadEvaluation( « », Expression, enumerate). 11 2. ReturnIfAbrupt(keyResult). 12 3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 13 varBinding, labelSet). 14 15 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 16 17 [...] 18 2. Let V = undefined. 19 [...] 20 5. Repeat 21 a. Let nextResult be IteratorStep(iterator). 22 b. ReturnIfAbrupt(nextResult). 23 c. If nextResult is false, return NormalCompletion(V). 24 [...] 25 k. Let result be the result of evaluating stmt. 26 [...] 27 m. If LoopContinues(result, labelSet) is false, return 28 IteratorClose(iterator, UpdateEmpty(result, V)). 29 ---*/ 30 31 assert.sameValue(eval('1; for (var a in { x: 0 }) { break; }'), undefined); 32 assert.sameValue(eval('2; for (var b in { x: 0 }) { 3; break; }'), 3); 33 34 assert.sameValue( 35 eval('4; outer: do { for (var a in { x: 0 }) { continue outer; } } while (false)'), 36 undefined 37 ); 38 assert.sameValue( 39 eval('5; outer: do { for (var b in { x: 0 }) { 6; continue outer; } } while (false)'), 40 6 41 ); 42 43 reportCompare(0, 0);