ary-init-iter-close.js (1231B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-init-iter-close.case 3 // - src/dstr-binding/default/try.template 4 /*--- 5 description: Iterator is closed when not exhausted by pattern evaluation (try statement) 6 esid: sec-runtime-semantics-catchclauseevaluation 7 features: [Symbol.iterator, 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 13.3.3.5 Runtime Semantics: BindingInitialization 18 19 BindingPattern : ArrayBindingPattern 20 21 [...] 22 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator, 23 result). 24 [...] 25 26 ---*/ 27 var doneCallCount = 0; 28 var iter = {}; 29 iter[Symbol.iterator] = function() { 30 return { 31 next: function() { 32 return { value: null, done: false }; 33 }, 34 return: function() { 35 doneCallCount += 1; 36 return {}; 37 } 38 }; 39 }; 40 41 var ranCatch = false; 42 43 try { 44 throw iter; 45 } catch ([x]) { 46 assert.sameValue(doneCallCount, 1); 47 ranCatch = true; 48 } 49 50 assert(ranCatch, 'executed `catch` block'); 51 52 reportCompare(0, 0);