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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/statements/generators/dflt-params-ref-prior.js | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/generators/dflt-params-ref-prior.js b/js/src/tests/test262/language/statements/generators/dflt-params-ref-prior.js new file mode 100644 index 0000000000..5b4d4bbf20 --- /dev/null +++ b/js/src/tests/test262/language/statements/generators/dflt-params-ref-prior.js @@ -0,0 +1,67 @@ +// This file was procedurally generated from the following sources: +// - src/function-forms/dflt-params-ref-prior.case +// - src/function-forms/default/gen-func-decl.template +/*--- +description: Referencing a parameter that occurs earlier in the ParameterList (generator function declaration) +esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject +features: [default-parameters, generators] +flags: [generated] +info: | + GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody } + + [...] + 2. Let F be GeneratorFunctionCreate(Normal, FormalParameters, + GeneratorBody, scope, strict). + [...] + + 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. + [...] + + + 14.1.19 Runtime Semantics: IteratorBindingInitialization + + FormalsList : FormalsList , FormalParameter + + 1. Let status be the result of performing IteratorBindingInitialization for + FormalsList using iteratorRecord and environment as the arguments. + 2. ReturnIfAbrupt(status). + 3. Return the result of performing IteratorBindingInitialization for + FormalParameter using iteratorRecord and environment as the arguments. + +---*/ +var x = 0; + +var callCount = 0; +// Stores a reference `ref` for case evaluation +function* ref(x, y = x, z = y) { + assert.sameValue(x, 3, 'first argument value'); + assert.sameValue(y, 3, 'second argument value'); + assert.sameValue(z, 3, 'third argument value'); + callCount = callCount + 1; +} + +ref(3).next(); + +assert.sameValue(callCount, 1, 'generator function invoked exactly once'); + +reportCompare(0, 0); |