gen-meth-dflt-ary-ptrn-elem-obj-id.js (2516B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elem-obj-id.case 3 // - src/dstr-binding/default/gen-method-dflt.template 4 /*--- 5 description: BindingElement with object binding pattern and initializer is not used (generator method (default parameter)) 6 esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation 7 features: [generators, destructuring-binding, default-parameters] 8 flags: [generated] 9 info: | 10 GeneratorMethod : 11 * PropertyName ( StrictFormalParameters ) { GeneratorBody } 12 13 1. Let propKey be the result of evaluating PropertyName. 14 2. ReturnIfAbrupt(propKey). 15 3. If the function code for this GeneratorMethod is strict mode code, 16 let strict be true. Otherwise let strict be false. 17 4. Let scope be the running execution context's LexicalEnvironment. 18 5. Let closure be GeneratorFunctionCreate(Method, 19 StrictFormalParameters, GeneratorBody, scope, strict). 20 [...] 21 22 9.2.1 [[Call]] ( thisArgument, argumentsList) 23 24 [...] 25 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 26 [...] 27 28 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 29 30 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 31 [...] 32 33 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 34 35 [...] 36 23. Let iteratorRecord be Record {[[iterator]]: 37 CreateListIterator(argumentsList), [[done]]: false}. 38 24. If hasDuplicates is true, then 39 [...] 40 25. Else, 41 b. Let formalStatus be IteratorBindingInitialization for formals with 42 iteratorRecord and env as arguments. 43 [...] 44 45 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 46 47 BindingElement : BindingPatternInitializer opt 48 49 [...] 50 2. If iteratorRecord.[[done]] is true, let v be undefined. 51 3. If Initializer is present and v is undefined, then 52 a. Let defaultValue be the result of evaluating Initializer. 53 b. Let v be ? GetValue(defaultValue). 54 4. Return the result of performing BindingInitialization of BindingPattern 55 with v and environment as the arguments. 56 ---*/ 57 58 var callCount = 0; 59 var obj = { 60 *method([{ x, y, z } = { x: 44, y: 55, z: 66 }] = [{ x: 11, y: 22, z: 33 }]) { 61 assert.sameValue(x, 11); 62 assert.sameValue(y, 22); 63 assert.sameValue(z, 33); 64 callCount = callCount + 1; 65 } 66 }; 67 68 obj.method().next(); 69 assert.sameValue(callCount, 1, 'generator method invoked exactly once'); 70 71 reportCompare(0, 0);