Light Classes: Fix ClassCastException for KotlinNoOriginLightField

compiler/light-classes/src/org/jetbrains/kotlin/asJava/LightClassUtil.java

@@ -154,6 +154,7 @@ public class LightClassUtil {
         PsiClass outerPsiClass = getWrappingClass(companionObject);
         if (outerPsiClass != null) {
             for (PsiField fieldOfParent : outerPsiClass.getFields()) {
+                if (!(fieldOfParent instanceof KotlinLightElement)) continue;
                 if (((KotlinLightElement<?, ?>) fieldOfParent).getOrigin() == companionObject &&
                     fieldOfParent.getName().equals(companionObject.getName())) { // TODO this check is relevant while light class has deprecated OBJECT$ field
                     return fieldOfParent;

idea/testData/findUsages/libraryUsages/_library/library/library.kt

@@ -10,6 +10,10 @@ open class A(n: Int) {
     }
 
     fun foo(a: Int): Int = a
+
+    companion object {
+
+    }
 }
 
 class B: A {

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryClassUsages.results.txt

@@ -8,17 +8,17 @@
 [LibraryClassUsages.1.java] New instance creation (11: 19) A a = new A();
 [LibraryClassUsages.1.java] New instance creation (12: 20) A aa = new A(1);
 [LibraryClassUsages.1.java] Usage in extends/implements clause (5: 17) class J extends A {
-[library.kt] Nested class/object (59: 13) val t = A.T(1)
+[library.kt] Nested class/object (63: 13) val t = A.T(1)
-[library.kt] Nested class/object (60: 14) val tt = A.T()
+[library.kt] Nested class/object (64: 14) val tt = A.T()
-[library.kt] New instance creation (53: 13) val a = A(1)
+[library.kt] New instance creation (57: 13) val a = A(1)
-[library.kt] New instance creation (54: 14) val aa = A()
+[library.kt] New instance creation (58: 14) val aa = A()
-[library.kt] Supertype (15: 10) class B: A {
+[library.kt] Supertype (19: 10) class B: A {
-[library.kt] Supertype (18: 14) class U: A.T {
+[library.kt] Supertype (22: 14) class U: A.T {
-[library.kt] Supertype (23: 12) class C(): A(1) {
+[library.kt] Supertype (27: 12) class C(): A(1) {
-[library.kt] Supertype (24: 16) class V(): A.T(1)
+[library.kt] Supertype (28: 16) class V(): A.T(1)
-[library.kt] Supertype (27: 11) class BB: A {
+[library.kt] Supertype (31: 11) class BB: A {
-[library.kt] Supertype (30: 15) class UU: A.T {
+[library.kt] Supertype (34: 15) class UU: A.T {
-[library.kt] Supertype (35: 13) class CC(): A() {
+[library.kt] Supertype (39: 13) class CC(): A() {
-[library.kt] Supertype (36: 17) class VV(): A.T()
+[library.kt] Supertype (40: 17) class VV(): A.T()
-[library.kt] Unclassified usage (57: 14) val ff = A::foo
+[library.kt] Unclassified usage (61: 14) val ff = A::foo
-[library.kt] Unclassified usage (62: 15) val fff = A.T::bar
+[library.kt] Unclassified usage (66: 15) val fff = A.T::bar

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryCompanionObjectUsages.0.kt

@@ -0,0 +1,11 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.JetObjectDeclaration
+// OPTIONS: usages, constructorUsages
+// FIND_BY_REF
+// WITH_FILE_NAME
+package usages
+
+import library.*
+
+fun test() {
+    val a = A.<caret>Companion
+}

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryCompanionObjectUsages.1.java

@@ -0,0 +1,9 @@
+package usages
+
+import library.*
+
+class J {
+    static void test() {
+        A.Companion o = A.Companion;
+    }
+}

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryCompanionObjectUsages.results.txt

@@ -0,0 +1,2 @@
+[LibraryCompanionObjectUsages.0.kt] Companion object (10: 15) val a = A.Companion
+[LibraryCompanionObjectUsages.1.java] Local variable declaration (7: 11) A.Companion o = A.Companion;

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryFunctionUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryFunctionUsages.0.kt] Callable reference (10: 15) val f = ::foo
 [LibraryFunctionUsages.0.kt] Function call (11: 5) foo()
-[library.kt] Callable reference (49: 15) val f = ::foo
+[library.kt] Callable reference (53: 15) val f = ::foo
-[library.kt] Function call (48: 5) foo()
+[library.kt] Function call (52: 5) foo()

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryMemberFunctionUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryMemberFunctionUsages.0.kt] Callable reference (10: 16) val f = A::foo
 [LibraryMemberFunctionUsages.0.kt] Function call (11: 9) A().foo(1)
-[library.kt] Callable reference (57: 17) val ff = A::foo
+[library.kt] Callable reference (61: 17) val ff = A::foo
-[library.kt] Function call (56: 7) a.foo(2)
+[library.kt] Function call (60: 7) a.foo(2)

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryNestedClassMemberFunctionUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryNestedClassMemberFunctionUsages.0.kt] Callable reference (10: 18) val f = A.T::bar
 [LibraryNestedClassMemberFunctionUsages.0.kt] Function call (11: 11) A.T().bar(1)
-[library.kt] Callable reference (62: 20) val fff = A.T::bar
+[library.kt] Callable reference (66: 20) val fff = A.T::bar
-[library.kt] Function call (61: 7) t.bar(2)
+[library.kt] Function call (65: 7) t.bar(2)

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryNestedClassPrimaryConstructorUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryNestedClassPrimaryConstructorUsages.0.kt] New instance creation (17: 16) val aa = A.T(1)
 [LibraryNestedClassPrimaryConstructorUsages.0.kt] Supertype (13: 14) class Y(): A.T(1)
-[library.kt] New instance creation (59: 15) val t = A.T(1)
+[library.kt] New instance creation (63: 15) val t = A.T(1)
-[library.kt] Supertype (24: 18) class V(): A.T(1)
+[library.kt] Supertype (28: 18) class V(): A.T(1)

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryNestedClassSecondaryConstructorUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryNestedClassSecondaryConstructorUsages.0.kt] New instance creation (16: 20) val a: A.T = A.T()
 [LibraryNestedClassSecondaryConstructorUsages.0.kt] Supertype (13: 14) class Y(): A.T()
-[library.kt] New instance creation (60: 16) val tt = A.T()
+[library.kt] New instance creation (64: 16) val tt = A.T()
-[library.kt] Supertype (36: 19) class VV(): A.T()
+[library.kt] Supertype (40: 19) class VV(): A.T()

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryNestedClassUsages.results.txt

@@ -8,10 +8,10 @@
 [LibraryNestedClassUsages.1.java] New instance creation (11: 23) A.T t = new A.T();
 [LibraryNestedClassUsages.1.java] New instance creation (12: 24) A.T tt = new A.T(1);
 [LibraryNestedClassUsages.1.java] Usage in extends/implements clause (5: 19) class J extends A.T {
-[library.kt] New instance creation (59: 15) val t = A.T(1)
+[library.kt] New instance creation (63: 15) val t = A.T(1)
-[library.kt] New instance creation (60: 16) val tt = A.T()
+[library.kt] New instance creation (64: 16) val tt = A.T()
-[library.kt] Supertype (18: 16) class U: A.T {
+[library.kt] Supertype (22: 16) class U: A.T {
-[library.kt] Supertype (24: 18) class V(): A.T(1)
+[library.kt] Supertype (28: 18) class V(): A.T(1)
-[library.kt] Supertype (30: 17) class UU: A.T {
+[library.kt] Supertype (34: 17) class UU: A.T {
-[library.kt] Supertype (36: 19) class VV(): A.T()
+[library.kt] Supertype (40: 19) class VV(): A.T()
-[library.kt] Unclassified usage (62: 17) val fff = A.T::bar
+[library.kt] Unclassified usage (66: 17) val fff = A.T::bar

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryObjectUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryObjectUsages.0.kt] Value read (10: 13) val o = O
 [LibraryObjectUsages.1.java] Class static member access (7: 15) O o = O.INSTANCE$;
 [LibraryObjectUsages.1.java] Local variable declaration (7: 9) O o = O.INSTANCE$;
-[library.kt] Value read (51: 13) val o = O
+[library.kt] Value read (55: 13) val o = O

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryPrimaryConstructorUsages.results.txt

@@ -1,4 +1,4 @@
 [LibraryPrimaryConstructorUsages.0.kt] New instance creation (17: 14) val aa = A(1)
 [LibraryPrimaryConstructorUsages.0.kt] Supertype (13: 12) class Y(): A(1)
-[library.kt] New instance creation (53: 13) val a = A(1)
+[library.kt] New instance creation (57: 13) val a = A(1)
-[library.kt] Supertype (23: 12) class C(): A(1) {
+[library.kt] Supertype (27: 12) class C(): A(1) {

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibrarySecondaryConstructorUsages.results.txt

@@ -1,4 +1,4 @@
 [LibrarySecondaryConstructorUsages.0.kt] New instance creation (16: 16) val a: A = A()
 [LibrarySecondaryConstructorUsages.0.kt] Supertype (13: 12) class Y(): A()
-[library.kt] New instance creation (54: 14) val aa = A()
+[library.kt] New instance creation (58: 14) val aa = A()
-[library.kt] Supertype (35: 13) class CC(): A() {
+[library.kt] Supertype (39: 13) class CC(): A() {

idea/tests/org/jetbrains/kotlin/findUsages/KotlinFindUsagesWithLibraryTestGenerated.java

@@ -94,6 +94,12 @@ public class KotlinFindUsagesWithLibraryTestGenerated extends AbstractKotlinFind
             doTest(fileName);
         }
 
+        @TestMetadata("LibraryCompanionObjectUsages.0.kt")
+        public void testLibraryCompanionObjectUsages() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryCompanionObjectUsages.0.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("LibraryFunctionUsages.0.kt")
         public void testLibraryFunctionUsages() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryFunctionUsages.0.kt");