インスタンスパラメータのバリデーション用共通関数を追加

Author: k163377

src/main/kotlin/com/mapk/fastkfunction/InternalFunctions.kt

@@ -3,6 +3,7 @@ package com.mapk.fastkfunction
 import java.lang.reflect.Method
 import kotlin.reflect.KClass
 import kotlin.reflect.KParameter
+import kotlin.reflect.full.isSuperclassOf
 
 /**
  * Get object instance if receiver declared in object.
@@ -21,6 +22,20 @@ internal val Method.declaringObject: Any? get() = declaringClass.kotlin.objectIn
  */
 internal val KParameter.clazz: KClass<*> get() = this.type.classifier as KClass<*>
 
+/**
+ * Check instance class is valid.
+ *
+ * @param expected Required clazz.
+ * @param actual Actual clazz.
+ * @throws IllegalArgumentException If actual is not required class.
+ */
+internal fun checkInstanceClass(expected: KClass<*>, actual: KClass<*>) {
+    if (!expected.isSuperclassOf(actual))
+        throw IllegalArgumentException(
+            "INSTANCE parameter required ${expected.simpleName}, but ${actual.simpleName} is present."
+        )
+}
+
 /**
  * Throw IllegalArgumentException if instance is null.
  *