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			92 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			92 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // This file was procedurally generated from the following sources:
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| // - src/dstr-binding/obj-ptrn-prop-obj.case
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| // - src/dstr-binding/default/cls-expr-private-gen-meth-dflt.template
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| /*---
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| description: Object binding pattern with "nested" object binding pattern not using initializer (private class expression method (default parameter))
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| esid: sec-class-definitions-runtime-semantics-evaluation
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| features: [class, class-methods-private, generators, destructuring-binding, default-parameters]
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| flags: [generated]
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| info: |
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|     ClassExpression : class BindingIdentifieropt ClassTail
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| 
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|     1. If BindingIdentifieropt is not present, let className be undefined.
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|     2. Else, let className be StringValue of BindingIdentifier.
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|     3. Let value be the result of ClassDefinitionEvaluation of ClassTail
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|        with argument className.
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|     [...]
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| 
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|     14.5.14 Runtime Semantics: ClassDefinitionEvaluation
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| 
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|     21. For each ClassElement m in order from methods
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|         a. If IsStatic of m is false, then
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|            i. Let status be the result of performing
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|               PropertyDefinitionEvaluation for m with arguments proto and
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|               false.
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|         [...]
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| 
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|     14.4.13 Runtime Semantics: PropertyDefinitionEvaluation
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| 
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|     GeneratorMethod :
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|         * PropertyName ( StrictFormalParameters ) { GeneratorBody }
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| 
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|     1. Let propKey be the result of evaluating PropertyName.
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|     2. ReturnIfAbrupt(propKey).
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|     3. If the function code for this GeneratorMethod is strict mode code,
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|        let strict be true. Otherwise let strict be false.
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|     4. Let scope be the running execution context's LexicalEnvironment.
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|     5. Let closure be GeneratorFunctionCreate(Method,
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|        StrictFormalParameters, GeneratorBody, scope, strict).
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| 
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|     9.2.1 [[Call]] ( thisArgument, argumentsList)
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| 
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|     [...]
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|     7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
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|     [...]
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| 
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|     9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
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| 
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|     1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
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|     [...]
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| 
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|     9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
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| 
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|     [...]
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|     23. Let iteratorRecord be Record {[[iterator]]:
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|         CreateListIterator(argumentsList), [[done]]: false}.
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|     24. If hasDuplicates is true, then
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|         [...]
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|     25. Else,
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|         b. Let formalStatus be IteratorBindingInitialization for formals with
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|            iteratorRecord and env as arguments.
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|     [...]
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| 
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|     13.3.3.7 Runtime Semantics: KeyedBindingInitialization
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| 
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|     [...]
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|     3. If Initializer is present and v is undefined, then
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|        [...]
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|     4. Return the result of performing BindingInitialization for BindingPattern
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|        passing v and environment as arguments.
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| ---*/
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| 
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| var callCount = 0;
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| var C = class {
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|   * #method({ w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: { x: undefined, z: 7 } }) {
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|     assert.sameValue(x, undefined);
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|     assert.sameValue(y, undefined);
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|     assert.sameValue(z, 7);
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| 
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|     assert.throws(ReferenceError, function() {
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|       w;
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|     });
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|     callCount = callCount + 1;
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|   }
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| 
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|   get method() {
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|     return this.#method;
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|   }
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| };
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| 
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| new C().method().next();
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| assert.sameValue(callCount, 1, 'method invoked exactly once');
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