dflt-ary-ptrn-rest-id-direct.js (1866B)
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/func-expr-dflt.template 4 /*--- 5 description: Lone rest element (direct binding) (function expression (default parameter)) 6 esid: sec-function-definitions-runtime-semantics-evaluation 7 features: [destructuring-binding, default-parameters] 8 flags: [generated] 9 includes: [compareArray.js] 10 info: | 11 FunctionExpression : function ( FormalParameters ) { FunctionBody } 12 13 [...] 14 3. Let closure be FunctionCreate(Normal, FormalParameters, FunctionBody, 15 scope, strict). 16 [...] 17 18 9.2.1 [[Call]] ( thisArgument, argumentsList) 19 20 [...] 21 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 22 [...] 23 24 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 25 26 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 27 [...] 28 29 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 30 31 [...] 32 23. Let iteratorRecord be Record {[[iterator]]: 33 CreateListIterator(argumentsList), [[done]]: false}. 34 24. If hasDuplicates is true, then 35 [...] 36 25. Else, 37 b. Let formalStatus be IteratorBindingInitialization for formals with 38 iteratorRecord and env as arguments. 39 [...] 40 41 Runtime Semantics: IteratorBindingInitialization 42 43 BindingRestElement : ... BindingIdentifier 44 45 [...] 46 2. Let A be ! ArrayCreate(0). 47 3. Let n be 0. 48 4. Repeat, 49 [...] 50 f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue). 51 g. Set n to n + 1. 52 53 ---*/ 54 55 var callCount = 0; 56 var f; 57 f = function([...x] = [1]) { 58 assert(Array.isArray(x)); 59 assert.compareArray(x, [1]); 60 callCount = callCount + 1; 61 }; 62 63 f(); 64 assert.sameValue(callCount, 1, 'function invoked exactly once'); 65 66 reportCompare(0, 0);