var-ary-ptrn-elem-id-init-fn-name-fn.js (1974B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-fn.case 3 // - src/dstr-binding/default/for-of-var.template 4 /*--- 5 description: SingleNameBinding assigns name to "anonymous" functions (for-of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( var ForBinding of AssignmentExpression ) Statement 12 13 [...] 14 3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 15 varBinding, labelSet). 16 17 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 18 19 [...] 20 3. Let destructuring be IsDestructuring of lhs. 21 [...] 22 5. Repeat 23 [...] 24 h. If destructuring is false, then 25 [...] 26 i. Else 27 i. If lhsKind is assignment, then 28 [...] 29 ii. Else if lhsKind is varBinding, then 30 1. Assert: lhs is a ForBinding. 31 2. Let status be the result of performing BindingInitialization 32 for lhs passing nextValue and undefined as the arguments. 33 [...] 34 35 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 36 37 SingleNameBinding : BindingIdentifier Initializeropt 38 39 [...] 40 6. If Initializer is present and v is undefined, then 41 a. Let defaultValue be the result of evaluating Initializer. 42 b. Let v be GetValue(defaultValue). 43 c. ReturnIfAbrupt(v). 44 d. If IsAnonymousFunctionDefinition(Initializer) is true, then 45 [...] 46 7. If environment is undefined, return PutValue(lhs, v). 47 8. Return InitializeReferencedBinding(lhs, v). 48 ---*/ 49 50 var iterCount = 0; 51 52 for (var [fn = function () {}, xFn = function x() {}] of [[]]) { 53 assert.sameValue(fn.name, 'fn'); 54 assert.notSameValue(xFn.name, 'xFn'); 55 56 iterCount += 1; 57 } 58 59 assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); 60 61 reportCompare(0, 0);