blob: 06cf1f265868326e5bf7b7affb7b68a5e3b16d37 (
plain)
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
|
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-switch-statement-runtime-semantics-evaluation
description: Retainment of existing variable environment (`default` clause)
info: |
1. Let exprRef be the result of evaluating Expression.
2. Let switchValue be ? GetValue(exprRef).
3. Let oldEnv be the running execution context's LexicalEnvironment.
4. Let blockEnv be NewDeclarativeEnvironment(oldEnv).
5. Perform BlockDeclarationInstantiation(CaseBlock, blockEnv).
6. Set the running execution context's LexicalEnvironment to blockEnv.
7. Let R be the result of performing CaseBlockEvaluation of CaseBlock with
argument switchValue.
[...]
flags: [noStrict]
---*/
var probeExpr, probeStmt;
var probeBefore = function() { return x; };
switch (eval('var x = 1;'), probeExpr = function() { return x; }) {
default:
probeStmt = function() { return x; };
var x = 2;
}
assert.sameValue(probeBefore(), 2, 'reference preceding statment');
assert.sameValue(probeExpr(), 2, 'reference from Expression position');
assert.sameValue(probeStmt(), 2, 'reference from Statement position');
assert.sameValue(x, 2, 'reference following statement');
reportCompare(0, 0);
|
