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64 lines
1.9 KiB
JavaScript
64 lines
1.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/function-forms/dflt-params-ref-later.case
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// - src/function-forms/error/gen-func-expr.template
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/*---
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description: Referencing a parameter that occurs later in the ParameterList (generator function expression)
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esid: sec-generator-function-definitions-runtime-semantics-evaluation
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features: [default-parameters]
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flags: [generated]
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info: |
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GeneratorExpression : function * ( FormalParameters ) { GeneratorBody }
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[...]
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3. Let closure be GeneratorFunctionCreate(Normal, FormalParameters,
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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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7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
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[...]
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9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
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1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
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[...]
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9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
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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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14.1.19 Runtime Semantics: IteratorBindingInitialization
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FormalsList : FormalsList , FormalParameter
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1. Let status be the result of performing IteratorBindingInitialization for
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FormalsList using iteratorRecord and environment as the arguments.
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2. ReturnIfAbrupt(status).
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3. Return the result of performing IteratorBindingInitialization for
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FormalParameter using iteratorRecord and environment as the arguments.
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---*/
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var x = 0;
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var callCount = 0;
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var f;
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f = function*(x = y, y) {
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callCount = callCount + 1;
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};
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assert.throws(ReferenceError, function() {
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f();
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});
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assert.sameValue(callCount, 0, 'generator function body not evaluated');
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