const-ary-ptrn-rest-id.js (1863B)
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-of-const.template 4 /*--- 5 description: Lone rest element (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 ( ForDeclaration of AssignmentExpression ) Statement 12 13 [...] 14 3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 15 lexicalBinding, 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 [...] 31 iii. Else, 32 1. Assert: lhsKind is lexicalBinding. 33 2. Assert: lhs is a ForDeclaration. 34 3. Let status be the result of performing BindingInitialization 35 for lhs passing nextValue and iterationEnv as arguments. 36 [...] 37 38 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 39 BindingRestElement : ... BindingIdentifier 40 [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat 41 [...] 42 f. Let status be CreateDataProperty(A, ToString (n), nextValue). 43 [...] 44 ---*/ 45 var values = [1, 2, 3]; 46 47 var iterCount = 0; 48 49 for (const [...x] of [values]) { 50 assert(Array.isArray(x)); 51 assert.sameValue(x.length, 3); 52 assert.sameValue(x[0], 1); 53 assert.sameValue(x[1], 2); 54 assert.sameValue(x[2], 3); 55 assert.notSameValue(x, values); 56 57 iterCount += 1; 58 } 59 60 assert.sameValue(iterCount, 1, 'iteration occurred as expected'); 61 62 reportCompare(0, 0);