Type Hierarchy: Support Kotlin class constructors

 #KT-22925 Fixed
 #KT-22926 Fixed

Author: asedunov

idea/src/org/jetbrains/kotlin/idea/hierarchy/KotlinTypeHierarchyProvider.kt

@@ -37,6 +37,7 @@ import org.jetbrains.kotlin.idea.util.ProjectRootsUtil
 import org.jetbrains.kotlin.idea.util.module
 import org.jetbrains.kotlin.platform.JavaToKotlinClassMap
 import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtConstructor
 import org.jetbrains.kotlin.psi.KtNamedFunction
 import org.jetbrains.kotlin.psi.psiUtil.getNonStrictParentOfType
 import org.jetbrains.kotlin.renderer.DescriptorRenderer
@@ -66,6 +67,7 @@ class KotlinTypeHierarchyProvider : JavaTypeHierarchyProvider() {
 
         return when (target) {
             is PsiClass -> target
+            is KtConstructor<*> -> getOriginalPsiClassOrCreateLightClass(target.getContainingClassOrObject(), module)
             is KtClassOrObject -> getOriginalPsiClassOrCreateLightClass(target, module)
             is KtNamedFunction -> { // Factory methods
                 val functionName = target.name

idea/testData/hierarchy/class/sub/ConstructorCallCaretAfter/ConstructorCallCaretAfter_verification.xml

@@ -0,0 +1,4 @@
+<node text="A ()" base="true">
+  <node text="B ()" />
+  <node text="C ()" />
+</node>

idea/testData/hierarchy/class/sub/ConstructorCallCaretAfter/main.kt

@@ -0,0 +1,4 @@
+open class A constructor(a: Int)
+
+class B: A<caret>(1)
+class C: A(1)

idea/testData/hierarchy/class/sub/ConstructorCallCaretBefore/ConstructorCallCaretBefore_verification.xml

@@ -0,0 +1,4 @@
+<node text="A ()" base="true">
+  <node text="B ()" />
+  <node text="C ()" />
+</node>

idea/testData/hierarchy/class/sub/ConstructorCallCaretBefore/main.kt

@@ -0,0 +1,4 @@
+open class A constructor(a: Int)
+
+class B: <caret>A(1)
+class C: A(1)

idea/testData/hierarchy/class/sub/SecondaryConstructorCallCaretAfter/SecondaryConstructorCallCaretAfter_verification.xml

@@ -0,0 +1,4 @@
+<node text="A ()" base="true">
+  <node text="B ()" />
+  <node text="C ()" />
+</node>

idea/testData/hierarchy/class/sub/SecondaryConstructorCallCaretAfter/main.kt

@@ -0,0 +1,6 @@
+open class A {
+    constructor(a: Int)
+}
+
+class B: A<caret>(1)
+class C: A(1)

idea/testData/hierarchy/class/sub/SecondaryConstructorCallCaretBefore/SecondaryConstructorCallCaretBefore_verification.xml

@@ -0,0 +1,4 @@
+<node text="A ()" base="true">
+  <node text="B ()" />
+  <node text="C ()" />
+</node>

idea/testData/hierarchy/class/sub/SecondaryConstructorCallCaretBefore/main.kt

@@ -0,0 +1,6 @@
+open class A {
+    constructor(a: Int)
+}
+
+class B: <caret>A(1)
+class C: A(1)