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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.
/*---
es6id: 13.12.11
description: >
Completion value when execution continues through multiple cases and ends
with an empty abrupt completion
info: |
SwitchStatement : switch ( Expression ) CaseBlock
[...]
8. Let R be the result of performing CaseBlockEvaluation of CaseBlock with
argument switchValue.
9. Set the running execution context’s LexicalEnvironment to oldEnv.
10. Return R.
13.12.9 Runtime Semantics: CaseBlockEvaluation
CaseBlock : { CaseClausesopt DefaultClause CaseClausesopt }
1. Let V = undefined.
2. Let A be the list of CaseClause items in the first CaseClauses, in
source text order. If the first CaseClauses is not present A is « ».
3. Let found be false.
4. Repeat for each CaseClause C in A
a. If found is false, then
[...]
b. If found is true, then
i. Let R be the result of evaluating C.
ii. If R.[[value]] is not empty, let V = R.[[value]].
iii. If R is an abrupt completion, return Completion(UpdateEmpty(R,
V)).
---*/
assert.sameValue(
eval('1; switch ("a") { case "a": 2; case "b": 3; break; default: }'),
3,
'Non-empty value replaces previous non-empty value'
);
assert.sameValue(
eval('4; switch ("a") { case "a": case "b": 5; break; default: }'),
5,
'Non-empty value replaces empty value'
);
assert.sameValue(
eval('6; switch ("a") { case "a": 7; case "b": break; default: }'),
7,
'Empty value does not replace previous non-empty value'
);
assert.sameValue(
eval('8; do { switch ("a") { case "a": 9; case "b": 10; continue; default: } } while (false)'),
10,
'Non-empty value replaces previous non-empty value'
);
assert.sameValue(
eval('11; do { switch ("a") { case "a": case "b": 12; continue; default: } } while (false)'),
12,
'Non-empty value replaces empty value'
);
assert.sameValue(
eval('13; do { switch ("a") { case "a": 14; case "b": continue; default: } } while (false)'),
14,
'Empty value does not replace previous non-empty value'
);
reportCompare(0, 0);