var-ary-ptrn-rest-id.js (1758B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-rest-id.case 3 // - src/dstr-binding/default/for-var.template 4 /*--- 5 description: Lone rest element (for statement) 6 esid: sec-for-statement-runtime-semantics-labelledevaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( var VariableDeclarationList ; Expressionopt ; Expressionopt ) Statement 12 13 1. Let varDcl be the result of evaluating VariableDeclarationList. 14 [...] 15 16 13.3.2.4 Runtime Semantics: Evaluation 17 18 VariableDeclarationList : VariableDeclarationList , VariableDeclaration 19 20 1. Let next be the result of evaluating VariableDeclarationList. 21 2. ReturnIfAbrupt(next). 22 3. Return the result of evaluating VariableDeclaration. 23 24 VariableDeclaration : BindingPattern Initializer 25 26 1. Let rhs be the result of evaluating Initializer. 27 2. Let rval be GetValue(rhs). 28 3. ReturnIfAbrupt(rval). 29 4. Return the result of performing BindingInitialization for BindingPattern 30 passing rval and undefined as arguments. 31 32 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 33 BindingRestElement : ... BindingIdentifier 34 [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat 35 [...] 36 f. Let status be CreateDataProperty(A, ToString (n), nextValue). 37 [...] 38 ---*/ 39 var values = [1, 2, 3]; 40 41 var iterCount = 0; 42 43 for (var [...x] = values; iterCount < 1; ) { 44 assert(Array.isArray(x)); 45 assert.sameValue(x.length, 3); 46 assert.sameValue(x[0], 1); 47 assert.sameValue(x[1], 2); 48 assert.sameValue(x[2], 3); 49 assert.notSameValue(x, values); 50 iterCount += 1; 51 } 52 53 assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); 54 55 reportCompare(0, 0);