ary-ptrn-rest-ary-elision.js (1921B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-rest-ary-elision.case 3 // - src/dstr-binding/default/try.template 4 /*--- 5 description: Rest element containing an elision (try statement) 6 esid: sec-runtime-semantics-catchclauseevaluation 7 features: [generators, destructuring-binding] 8 flags: [generated] 9 info: | 10 Catch : catch ( CatchParameter ) Block 11 12 [...] 13 5. Let status be the result of performing BindingInitialization for 14 CatchParameter passing thrownValue and catchEnv as arguments. 15 [...] 16 17 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 18 19 BindingRestElement : ... BindingPattern 20 21 1. Let A be ArrayCreate(0). 22 [...] 23 3. Repeat 24 [...] 25 b. If iteratorRecord.[[done]] is true, then 26 i. Return the result of performing BindingInitialization of 27 BindingPattern with A and environment as the arguments. 28 [...] 29 30 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 31 32 ArrayBindingPattern : [ Elision ] 33 34 1. Return the result of performing 35 IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord 36 as the argument. 37 38 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation 39 40 Elision : , 41 42 1. If iteratorRecord.[[done]] is false, then 43 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 44 b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. 45 c. ReturnIfAbrupt(next). 46 d. If next is false, set iteratorRecord.[[done]] to true. 47 2. Return NormalCompletion(empty). 48 49 ---*/ 50 var first = 0; 51 var second = 0; 52 function* g() { 53 first += 1; 54 yield; 55 second += 1; 56 }; 57 58 var ranCatch = false; 59 60 try { 61 throw g(); 62 } catch ([...[,]]) { 63 assert.sameValue(first, 1); 64 assert.sameValue(second, 1); 65 ranCatch = true; 66 } 67 68 assert(ranCatch, 'executed `catch` block'); 69 70 reportCompare(0, 0);