ary-ptrn-elem-id-iter-val.js (1570B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-id-iter-val.case 3 // - src/dstr-binding/default/var-stmt.template 4 /*--- 5 description: SingleNameBinding when value iteration was completed previously (`var` statement) 6 esid: sec-variable-statement-runtime-semantics-evaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 VariableDeclaration : BindingPattern Initializer 11 12 1. Let rhs be the result of evaluating Initializer. 13 2. Let rval be GetValue(rhs). 14 3. ReturnIfAbrupt(rval). 15 4. Return the result of performing BindingInitialization for 16 BindingPattern passing rval and undefined as arguments. 17 18 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 19 20 SingleNameBinding : BindingIdentifier Initializeropt 21 22 [...] 23 4. If iteratorRecord.[[done]] is false, then 24 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 25 b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. 26 c. ReturnIfAbrupt(next). 27 d. If next is false, set iteratorRecord.[[done]] to true. 28 e. Else, 29 [...] 30 i. Let v be IteratorValue(next). 31 ii. If v is an abrupt completion, set 32 iteratorRecord.[[done]] to true. 33 iii. ReturnIfAbrupt(v). 34 5. If iteratorRecord.[[done]] is true, let v be undefined. 35 [...] 36 8. Return InitializeReferencedBinding(lhs, v). 37 ---*/ 38 39 var [x, y, z] = [1, 2, 3]; 40 41 assert.sameValue(x, 1); 42 assert.sameValue(y, 2); 43 assert.sameValue(z, 3); 44 45 reportCompare(0, 0);