| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/obj-ptrn-prop-obj-init.case |
| // - src/dstr-binding/default/meth-dflt.template |
| /*--- |
| description: Object binding pattern with "nested" object binding pattern using initializer (method (default parameter)) |
| esid: sec-runtime-semantics-definemethod |
| features: [destructuring-binding, default-parameters] |
| flags: [generated] |
| info: | |
| MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } |
| |
| [...] |
| 6. Let closure be FunctionCreate(kind, StrictFormalParameters, |
| FunctionBody, scope, strict). If functionPrototype was passed as a |
| parameter then pass its value as the functionPrototype optional argument |
| of FunctionCreate. |
| [...] |
| |
| 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| |
| [...] |
| 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). |
| [...] |
| |
| 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) |
| |
| 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). |
| [...] |
| |
| 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) |
| |
| [...] |
| 23. Let iteratorRecord be Record {[[iterator]]: |
| CreateListIterator(argumentsList), [[done]]: false}. |
| 24. If hasDuplicates is true, then |
| [...] |
| 25. Else, |
| b. Let formalStatus be IteratorBindingInitialization for formals with |
| iteratorRecord and env as arguments. |
| [...] |
| |
| 13.3.3.7 Runtime Semantics: KeyedBindingInitialization |
| |
| [...] |
| 3. If Initializer is present and v is undefined, then |
| a. Let defaultValue be the result of evaluating Initializer. |
| b. Let v be GetValue(defaultValue). |
| c. ReturnIfAbrupt(v). |
| 4. Return the result of performing BindingInitialization for BindingPattern |
| passing v and environment as arguments. |
| ---*/ |
| |
| var callCount = 0; |
| var obj = { |
| method({ w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: undefined }) { |
| assert.sameValue(x, 4); |
| assert.sameValue(y, 5); |
| assert.sameValue(z, 6); |
| |
| assert.throws(ReferenceError, function() { |
| w; |
| }); |
| callCount = callCount + 1; |
| } |
| }; |
| |
| obj.method(); |
| assert.sameValue(callCount, 1, 'method invoked exactly once'); |