Denis Zharkov
20 lines
801 B
Kotlin
20 lines
801 B
Kotlin
import kotlin.test.assertEquals
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import java.lang.reflect.ParameterizedType
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import java.lang.reflect.Type
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open class TypeLiteral<T> {
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val type: Type
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get() = (javaClass.getGenericSuperclass() as ParameterizedType).getActualTypeArguments()[0]
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}
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inline fun <reified T> typeLiteral(): TypeLiteral<T> = object : TypeLiteral<T>() {}
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fun box(): String {
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assertEquals("class java.lang.String", typeLiteral<String>().type.toString())
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assertEquals("java.util.List<?>", typeLiteral<List<*>>().type.toString())
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assertEquals("java.lang.String[]", typeLiteral<Array<String>>().type.toString())
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assertEquals("java.lang.Integer[]", typeLiteral<Array<Int>>().type.toString())
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assertEquals("java.lang.String[][]", typeLiteral<Array<Array<String>>>().type.toString())
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return "OK"
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}
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