Method Hierarchy: Refactoring

- Do not rely on light methods and Java method hierarchy
- Support val/var parameters
- Support built-in member functions

 #KT-14346 Fixed

compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt

@@ -18,7 +18,6 @@ package org.jetbrains.kotlin.asJava
 
 import com.intellij.psi.*
 import com.intellij.psi.search.GlobalSearchScope
-import com.intellij.util.IncorrectOperationException
 import org.jetbrains.kotlin.asJava.classes.KtLightClass
 import org.jetbrains.kotlin.asJava.classes.KtLightClassForFacade
 import org.jetbrains.kotlin.asJava.elements.KtLightAnnotationForSourceEntry
@@ -30,6 +29,7 @@ import org.jetbrains.kotlin.load.java.propertyNameByGetMethodName
 import org.jetbrains.kotlin.load.java.propertyNameBySetMethodName
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.platform.JavaToKotlinClassMap
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getNonStrictParentOfType
 import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
@@ -37,6 +37,15 @@ import org.jetbrains.kotlin.psi.psiUtil.isExtensionDeclaration
 
 fun KtClassOrObject.toLightClass(): KtLightClass? = LightClassGenerationSupport.getInstance(project).getLightClass(this)
 
+fun KtClassOrObject.toLightClassWithBuiltinMapping(): PsiClass? {
+    toLightClass()?.let { return it }
+
+    val fqName = fqName ?: return null
+    val javaClassFqName = JavaToKotlinClassMap.mapKotlinToJava(fqName.toUnsafe())?.asSingleFqName() ?: return null
+    val searchScope = useScope as? GlobalSearchScope ?: return null
+    return JavaPsiFacade.getInstance(project).findClass(javaClassFqName.asString(), searchScope)
+}
+
 fun KtFile.findFacadeClass(): KtLightClass? {
     return LightClassGenerationSupport.getInstance(project)
             .getFacadeClassesInPackage(packageFqName, this.useScope as? GlobalSearchScope ?: GlobalSearchScope.projectScope(project))