Override getText() in light classes to prevent decompiler errors on Kotlin sources

Fixes EA-58277

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/jetAsJava/KotlinLightElement.kt

@@ -19,7 +19,7 @@ package org.jetbrains.jet.lang.resolve.java.jetAsJava
 import com.intellij.psi.PsiElement
 import org.jetbrains.jet.lang.psi.JetDeclaration
 
-public trait KotlinLightElement<T: JetDeclaration, D: PsiElement> {
+public trait KotlinLightElement<T : JetDeclaration, D : PsiElement> {
     public val origin: T?
     public val delegate: D
 }

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/FakeLightClassForFileOfPackage.java

@@ -83,4 +83,9 @@ public class FakeLightClassForFileOfPackage extends AbstractLightClass implement
     public PsiElement copy() {
         return new FakeLightClassForFileOfPackage(getManager(), delegate, file);
     }
+
+    @Override
+    public String getText() {
+        return null;
+    }
 }

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightClass.kt

@@ -17,11 +17,10 @@
 package org.jetbrains.jet.asJava;
 
 import com.intellij.psi.PsiClass;
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.resolve.name.FqName;
 import org.jetbrains.jet.lang.resolve.java.jetAsJava.KotlinLightElement
 import org.jetbrains.jet.lang.psi.JetClassOrObject
 
-public trait KotlinLightClass: PsiClass, KotlinLightElement<JetClassOrObject, PsiClass> {
+public trait KotlinLightClass : PsiClass, KotlinLightElement<JetClassOrObject, PsiClass> {
     val fqName: FqName
 }

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinWrappingLightClass.java

@@ -24,13 +24,14 @@ import com.intellij.psi.PsiMethod;
 import com.intellij.psi.impl.PsiClassImplUtil;
 import com.intellij.psi.impl.light.AbstractLightClass;
 import com.intellij.psi.impl.light.LightField;
-import org.jetbrains.jet.asJava.light.KotlinLightField;
 import com.intellij.psi.impl.light.LightMethod;
 import com.intellij.psi.impl.source.ClassInnerStuffCache;
 import com.intellij.psi.impl.source.PsiExtensibleClass;
 import com.intellij.util.Function;
 import com.intellij.util.containers.ContainerUtil;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.asJava.light.KotlinLightField;
+import org.jetbrains.jet.lang.psi.JetClassOrObject;
 import org.jetbrains.jet.lang.psi.JetDeclaration;
 import org.jetbrains.jet.lang.psi.JetProperty;
 
@@ -132,4 +133,10 @@ public abstract class KotlinWrappingLightClass extends AbstractLightClass implem
             }
         });
     }
+
+    @Override
+    public String getText() {
+        JetClassOrObject origin = getOrigin();
+        return origin == null ? null : origin.getText();
+    }
 }