ary-ptrn-elem-ary-rest-iter.js (1478B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case 3 // - src/dstr-binding/default/var-stmt.template 4 /*--- 5 description: BindingElement with array binding pattern and initializer is not used (`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 BindingElement : BindingPatternInitializer opt 21 22 1. If iteratorRecord.[[done]] is false, then 23 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 24 [...] 25 e. Else, 26 i. Let v be IteratorValue(next). 27 [...] 28 4. Return the result of performing BindingInitialization of BindingPattern 29 with v and environment as the arguments. 30 ---*/ 31 var values = [2, 1, 3]; 32 var initCount = 0; 33 34 var [[...x] = function() { initCount += 1; }()] = [values]; 35 36 assert(Array.isArray(x)); 37 assert.sameValue(x[0], 2); 38 assert.sameValue(x[1], 1); 39 assert.sameValue(x[2], 3); 40 assert.sameValue(x.length, 3); 41 assert.notSameValue(x, values); 42 assert.sameValue(initCount, 0); 43 44 reportCompare(0, 0);