Juan Chen
d163853c97
This commit handles "subclass: super-interface by delegate-expression". During Psi2Fir, for each delegate, we add to the subclass a synthetic field (which has type super-interface), and an assignment of the delegate-expression to the synthetic field in the primary constructor, so that the delegate-expression can be resolved and transformed along the way. During Fir2Ir, we look up delegatable members from the super-interface and generate corresponding functions/properties for the subclass. TODO: support for generic delegatable members and generic super-interface.
51 lines
1.7 KiB
Kotlin
Vendored
51 lines
1.7 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM
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// The old backend thinks `toArray(): Array<Int?>` is the same as `toArray(): Array<Any?>`
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// IGNORE_BACKEND: JVM
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// WITH_RUNTIME
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// FILE: MyListWithCustomToArray.java
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public abstract class MyListWithCustomToArray<E> extends java.util.AbstractList<E> {
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public Object[] toArray() {
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return new Object[]{null};
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}
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public <T> T[] toArray(T[] a) {
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return a;
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}
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}
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// FILE: a.kt
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class MyList<T>(val list: List<T>): java.util.AbstractList<T>() {
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override fun get(index: Int): T = list[index]
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override val size: Int
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get() = list.size
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}
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class MyListSubclass<T>(val list: List<T>): MyListWithCustomToArray<T>() {
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override fun get(index: Int): T = list[index]
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override val size: Int
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get() = list.size
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}
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class MyCollection<T>(val list: List<T>) : Collection<T> by list {
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fun toArray(): Array<Int?> =
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arrayOfNulls<Int>(0)
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}
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fun box(): String {
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val list1 = MyList(listOf(2, 3, 9)) as java.util.Collection<*>
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list1.toArray().contentToString().let { if (it != "[2, 3, 9]") return "fail 1: $it" }
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list1.toArray(arrayOfNulls<Int>(0)).contentToString().let { if (it != "[2, 3, 9]") return "fail 2: $it" }
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val list2 = MyListSubclass(listOf(2, 3, 9)) as java.util.Collection<*>
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list2.toArray().contentToString().let { if (it != "[null]") return "fail 3: $it" }
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list2.toArray(arrayOfNulls<Int>(1)).contentToString().let { if (it != "[null]") return "fail 4: $it" }
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val list3 = MyCollection(listOf(2, 3, 9)) as java.util.Collection<*>
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list3.toArray().contentToString().let { if (it != "[2, 3, 9]") return "fail 5: $it" }
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list3.toArray(arrayOfNulls<Int>(0)).contentToString().let { if (it != "[2, 3, 9]") return "fail 6: $it" }
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return "OK"
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}
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