Abstract extension function added

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinDescriptorIconProvider.java

@@ -84,16 +84,15 @@ public final class KotlinDescriptorIconProvider {
         if (descriptor instanceof FunctionDescriptor) {
             FunctionDescriptor functionDescriptor = (FunctionDescriptor) descriptor;
             if (functionDescriptor.getExtensionReceiverParameter() != null) {
-                return KotlinIcons.EXTENSION_FUNCTION;
+                return Modality.ABSTRACT == functionDescriptor.getModality()
+                       ? KotlinIcons.ABSTRACT_EXTENSION_FUNCTION
+                       : KotlinIcons.EXTENSION_FUNCTION;
             }
 
             if (descriptor.getContainingDeclaration() instanceof ClassDescriptor) {
-                if (Modality.ABSTRACT == functionDescriptor.getModality()) {
-                    return PlatformIcons.ABSTRACT_METHOD_ICON;
-                }
-                else {
-                    return PlatformIcons.METHOD_ICON;
-                }
+                return Modality.ABSTRACT == functionDescriptor.getModality()
+                       ? PlatformIcons.ABSTRACT_METHOD_ICON
+                       : PlatformIcons.METHOD_ICON;
             }
             else {
                 return KotlinIcons.FUNCTION;

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinIconProvider.kt

@@ -32,7 +32,6 @@ import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
 import javax.swing.Icon
 
 class KotlinIconProvider : IconProvider(), DumbAware {
-
     override fun getIcon(psiElement: PsiElement, flags: Int): Icon? {
         if (psiElement is KtFile) {
             val mainClass = getMainClass(psiElement)
@@ -92,10 +91,12 @@ class KotlinIconProvider : IconProvider(), DumbAware {
             }
             is KtLightClassForSourceDeclaration -> navigationElement.getBaseIcon()
             is KtNamedFunction -> when {
-                receiverTypeReference != null -> KotlinIcons.EXTENSION_FUNCTION
+                receiverTypeReference != null ->
+                    if (KtPsiUtil.isAbstract(this)) KotlinIcons.ABSTRACT_EXTENSION_FUNCTION else KotlinIcons.EXTENSION_FUNCTION
                 getStrictParentOfType<KtNamedDeclaration>() is KtClass ->
                     if (KtPsiUtil.isAbstract(this)) PlatformIcons.ABSTRACT_METHOD_ICON else PlatformIcons.METHOD_ICON
-                else -> KotlinIcons.FUNCTION
+                else ->
+                    KotlinIcons.FUNCTION
             }
             is KtFunctionLiteral -> KotlinIcons.LAMBDA
             is KtClass -> when {

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinIcons.java

@@ -36,6 +36,7 @@ public interface KotlinIcons {
     Icon ANNOTATION = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/annotationKotlin.png");
     Icon FUNCTION = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/function.png");
     Icon EXTENSION_FUNCTION = PlatformIcons.FUNCTION_ICON;
+    Icon ABSTRACT_EXTENSION_FUNCTION = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/abstract_extension_function.png");
     Icon LAMBDA = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/lambda.png");
     Icon VAR = PlatformIcons.VARIABLE_ICON;
     Icon VAL = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/value.png");