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Reflection: add KClass.isInstance, KClass.cast, KClass.safeCast

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#KT-11284 Fixed
This commit is contained in:
Alexander Udalov
2016-07-12 18:48:37 +03:00
parent 3702f4a7a7
commit ada81923dc
7 changed files with 136 additions and 3 deletions
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core/descriptors.runtime/src/org/jetbrains/kotlin/load/java/structure/reflect/reflectClassUtil.kt
+19 -3
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@@ -27,13 +27,29 @@ val Class<*>.safeClassLoader: ClassLoader
fun Class<*>.isEnumClassOrSpecializedEnumEntryClass(): Boolean =
Enum::class.java.isAssignableFrom(this)
private val WRAPPER_TO_PRIMITIVE = listOf(
Boolean::class, Byte::class, Char::class, Double::class, Float::class, Int::class, Long::class, Short::class
).map { it.javaObjectType to it.javaPrimitiveType }.toMap()
private val PRIMITIVE_CLASSES =
listOf(Boolean::class, Byte::class, Char::class, Double::class, Float::class, Int::class, Long::class, Short::class)
private val WRAPPER_TO_PRIMITIVE = PRIMITIVE_CLASSES.map { it.javaObjectType to it.javaPrimitiveType }.toMap()
private val PRIMITIVE_TO_WRAPPER = PRIMITIVE_CLASSES.map { it.javaPrimitiveType to it.javaObjectType }.toMap()
val Class<*>.primitiveByWrapper: Class<*>?
get() = WRAPPER_TO_PRIMITIVE[this]
val Class<*>.wrapperByPrimitive: Class<*>?
get() = PRIMITIVE_TO_WRAPPER[this]
private val FUNCTION_CLASSES =
listOf(
Function0::class.java, Function1::class.java, Function2::class.java, Function3::class.java, Function4::class.java,
Function5::class.java, Function6::class.java, Function7::class.java, Function8::class.java, Function9::class.java,
Function10::class.java, Function11::class.java, Function12::class.java, Function13::class.java, Function14::class.java,
Function15::class.java, Function16::class.java, Function17::class.java, Function18::class.java, Function19::class.java,
Function20::class.java, Function21::class.java, Function22::class.java
).mapIndexed { i, clazz -> clazz to i }.toMap()
val Class<*>.functionClassArity: Int?
get() = FUNCTION_CLASSES[this]
/**
* NOTE: does not perform a Java -> Kotlin mapping. If this is not expected, consider using KClassImpl#classId instead
*/