Vitaly
29 lines
845 B
Kotlin
Vendored
29 lines
845 B
Kotlin
Vendored
// IGNORE_BACKEND: JS_IR
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// IGNORE_BACKEND: JS_IR_ES6
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//KT-3190 Compiler crash if function called 'invoke' calls a closure
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// IGNORE_BACKEND: JS
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// JS backend does not allow to implement Function{N} interfaces
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fun box(): String {
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val test = Cached<Int,Int>({ it + 2 })
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return if (test(1) == 3) "OK" else "fail"
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}
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class Cached<K, V>(private val generate: (K)->V): Function1<K, V> {
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val store = HashMap<K, V>()
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// Everything works just fine if 'invoke' method is renamed to, for example, 'get'
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override fun invoke(p1: K) = store.getOrPut(p1) { generate(p1) }
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}
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//from library
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fun <K,V> MutableMap<K,V>.getOrPut(key: K, defaultValue: ()-> V) : V {
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if (this.containsKey(key)) {
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return this.get(key) as V
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} else {
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val answer = defaultValue()
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this.put(key, answer)
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return answer
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}
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}
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