Jinseong Jeon
20 lines
726 B
Kotlin
Vendored
20 lines
726 B
Kotlin
Vendored
interface PsiElement {
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fun <T: PsiElement> findChildByType(i: Int): T? =
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if (i == 42) JetOperationReferenceExpression() as T else throw Exception()
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}
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interface JetSimpleNameExpression : PsiElement {
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fun getReferencedNameElement(): PsiElement
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}
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class JetOperationReferenceExpression : JetSimpleNameExpression {
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override fun getReferencedNameElement() = this
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}
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class JetLabelReferenceExpression : JetSimpleNameExpression {
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public override fun getReferencedNameElement(): PsiElement =
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findChildByType(42) ?: this
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}
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fun box(): String {
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val element = JetLabelReferenceExpression().getReferencedNameElement()
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return if (element is JetOperationReferenceExpression) "OK" else "fail"
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}
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