ary-ptrn-elem-ary-elem-init.js (1317B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-ary-elem-init.case 3 // - src/dstr-binding/default/var-stmt.template 4 /*--- 5 description: BindingElement with array binding pattern and initializer is 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 [...] 23 2. If iteratorRecord.[[done]] is true, let v be undefined. 24 3. If Initializer is present and v is undefined, then 25 a. Let defaultValue be the result of evaluating Initializer. 26 b. Let v be ? GetValue(defaultValue). 27 4. Return the result of performing BindingInitialization of BindingPattern 28 with v and environment as the arguments. 29 ---*/ 30 31 var [[x, y, z] = [4, 5, 6]] = []; 32 33 assert.sameValue(x, 4); 34 assert.sameValue(y, 5); 35 assert.sameValue(z, 6); 36 37 reportCompare(0, 0);