ary-ptrn-elem-ary-elision-init.js (1395B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-ary-elision-init.case 3 // - src/dstr-binding/default/try.template 4 /*--- 5 description: BindingElement with array binding pattern and initializer is used (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 BindingElement : BindingPatternInitializer opt 20 21 [...] 22 2. If iteratorRecord.[[done]] is true, let v be undefined. 23 3. If Initializer is present and v is undefined, then 24 a. Let defaultValue be the result of evaluating Initializer. 25 b. Let v be ? GetValue(defaultValue). 26 4. Return the result of performing BindingInitialization of BindingPattern 27 with v and environment as the arguments. 28 29 ---*/ 30 var first = 0; 31 var second = 0; 32 function* g() { 33 first += 1; 34 yield; 35 second += 1; 36 }; 37 38 var ranCatch = false; 39 40 try { 41 throw []; 42 } catch ([[,] = g()]) { 43 assert.sameValue(first, 1); 44 assert.sameValue(second, 0); 45 ranCatch = true; 46 } 47 48 assert(ranCatch, 'executed `catch` block'); 49 50 reportCompare(0, 0);