// 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 the matching case is exited via 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 [...] 5. Let foundInB be false. 6. Let B be the List containing the CaseClause items in the second CaseClauses, in source text order. If the second CaseClauses is not present B is « ». 7. If found is false, then a. Repeat for each CaseClause C in B i. If foundInB is false, then 1. Let clauseSelector be the result of CaseSelectorEvaluation of C. 2. If clauseSelector is an abrupt completion, then a. If clauseSelector.[[value]] is empty, return Completion{[[type]]: clauseSelector.[[type]], [[value]]: undefined, [[target]]: clauseSelector.[[target]]}. b. Else, return Completion(clauseSelector). 3. Let foundInB be the result of performing Strict Equality Comparison input === clauseSelector.[[value]]. ii. If foundInB is true, then 1. Let R be the result of evaluating CaseClause C. 2. If R.[[value]] is not empty, let V = R.[[value]]. 3. If R is an abrupt completion, return Completion(UpdateEmpty(R, V)). ---*/ assert.sameValue( eval('1; switch ("a") { default: case "a": break; }'), undefined ); assert.sameValue( eval('2; switch ("a") { default: case "a": { 3; break; } }'), 3 ); assert.sameValue( eval('4; do { switch ("a") { default: case "a": continue; } } while (false)'), undefined ); assert.sameValue( eval('5; do { switch ("a") { default: case "a": { 6; continue; } } } while (false)'), 6 ); reportCompare(0, 0);