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// 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 (`case` 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, probeSelector, probeStmt;
var probeBefore = function() { return x; };
switch (eval('var x = 1;'), probeExpr = function() { return x; }, null) {
case eval('var x = 2;'), probeSelector = function() { return x; }, null:
probeStmt = function() { return x; };
var x = 3;
}
assert.sameValue(probeBefore(), 3, 'reference preceding statement');
assert.sameValue(probeExpr(), 3, 'reference from first Expression');
assert.sameValue(probeSelector(), 3, 'reference from "selector" Expression');
assert.sameValue(probeStmt(), 3, 'reference from Statement position');
assert.sameValue(x, 3, 'reference following statement');
reportCompare(0, 0);
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