1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 13.7.5.11
description: >
Completion value when head has no declaration and iteration is cancelled
info: |
IterationStatement : for ( LeftHandSideExpression in Expression ) Statement
1. Let keyResult be ForIn/OfHeadEvaluation( « », Expression, enumerate).
2. ReturnIfAbrupt(keyResult).
3. Return ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement,
keyResult, assignment, labelSet).
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
[...]
2. Let V = undefined.
[...]
5. Repeat
a. Let nextResult be IteratorStep(iterator).
b. ReturnIfAbrupt(nextResult).
c. If nextResult is false, return NormalCompletion(V).
[...]
k. Let result be the result of evaluating stmt.
[...]
m. If LoopContinues(result, labelSet) is false, return
IteratorClose(iterator, UpdateEmpty(result, V)).
---*/
assert.sameValue(eval('var a; 1; for (a in { x: 0 }) { break; }'), undefined);
assert.sameValue(eval('var b; 2; for (b in { x: 0 }) { 3; break; }'), 3);
assert.sameValue(
eval('var a; 4; outer: do { for (a in { x: 0 }) { continue outer; } } while (false)'),
undefined
);
assert.sameValue(
eval('var b; 5; outer: do { for (b in { x: 0 }) { 6; continue outer; } } while (false)'),
6
);
reportCompare(0, 0);
|
