let-ary-ptrn-rest-id-direct.js (1799B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-rest-id-direct.case 3 // - src/dstr-binding/default/for-of-let.template 4 /*--- 5 description: Lone rest element (direct binding) (for-of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 includes: [compareArray.js] 10 info: | 11 IterationStatement : 12 for ( ForDeclaration of AssignmentExpression ) Statement 13 14 [...] 15 3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 16 lexicalBinding, labelSet). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 3. Let destructuring be IsDestructuring of lhs. 22 [...] 23 5. Repeat 24 [...] 25 h. If destructuring is false, then 26 [...] 27 i. Else 28 i. If lhsKind is assignment, then 29 [...] 30 ii. Else if lhsKind is varBinding, then 31 [...] 32 iii. Else, 33 1. Assert: lhsKind is lexicalBinding. 34 2. Assert: lhs is a ForDeclaration. 35 3. Let status be the result of performing BindingInitialization 36 for lhs passing nextValue and iterationEnv as arguments. 37 [...] 38 39 Runtime Semantics: IteratorBindingInitialization 40 41 BindingRestElement : ... BindingIdentifier 42 43 [...] 44 2. Let A be ! ArrayCreate(0). 45 3. Let n be 0. 46 4. Repeat, 47 [...] 48 f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue). 49 g. Set n to n + 1. 50 51 ---*/ 52 53 var iterCount = 0; 54 55 for (let [...x] of [[1]]) { 56 assert(Array.isArray(x)); 57 assert.compareArray(x, [1]); 58 59 iterCount += 1; 60 } 61 62 assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); 63 64 reportCompare(0, 0);