Added quick fix for "Unused receiver parameter".

idea/src/org/jetbrains/kotlin/idea/inspections/UnusedReceiverParameterInspection.kt

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.idea.inspections
 
 import com.intellij.codeInspection.*
-import com.intellij.extapi.psi.ASTDelegatePsiElement
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElementVisitor
 import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor
@@ -27,7 +26,7 @@ import org.jetbrains.kotlin.idea.search.usagesSearch.descriptor
 import org.jetbrains.kotlin.lexer.JetTokens
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.isOverridable
-import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.psi.typeRefHelpers.setReceiverTypeReference
 import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCall
 import org.jetbrains.kotlin.resolve.scopes.receivers.ExtensionReceiver
 
@@ -62,7 +61,12 @@ public class UnusedReceiverParameterInspection : AbstractKotlinInspection() {
                 })
 
                 if (!used) {
-                    holder.registerProblem(receiverTypeReference, JetBundle.message("unused.receiver.parameter"), ProblemHighlightType.LIKE_UNUSED_SYMBOL) // TODO add quick fix
+                    holder.registerProblem(
+                            receiverTypeReference,
+                            JetBundle.message("unused.receiver.parameter"),
+                            ProblemHighlightType.LIKE_UNUSED_SYMBOL,
+                            MyQuickFix(callableDeclaration)
+                    )
                 }
             }
 
@@ -75,4 +79,16 @@ public class UnusedReceiverParameterInspection : AbstractKotlinInspection() {
             }
         }
     }
+
+    private class MyQuickFix(val declaration: JetCallableDeclaration): LocalQuickFix {
+        override fun getName(): String {
+            return JetBundle.message("unused.receiver.parameter.remove")
+        }
+
+        override fun applyFix(project: Project, descriptor: ProblemDescriptor?) {
+            declaration.setReceiverTypeReference(null)
+        }
+
+        override fun getFamilyName(): String = "whatever"
+    }
 }

idea/testData/quickfix/removeUnusedReceiver/.inspection

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.inspections.UnusedReceiverParameterInspection

idea/testData/quickfix/removeUnusedReceiver/afterInFunction.kt

@@ -0,0 +1,4 @@
+// "Remove redundant receiver parameter" "true"
+fun foo() {
+
+}

idea/testData/quickfix/removeUnusedReceiver/afterInProperty.kt

@@ -0,0 +1,3 @@
+// "Remove redundant receiver parameter" "true"
+val v: Int
+    get() = 123

idea/testData/quickfix/removeUnusedReceiver/beforeInFunction.kt

@@ -0,0 +1,4 @@
+// "Remove redundant receiver parameter" "true"
+fun <caret>Any.foo() {
+
+}

idea/testData/quickfix/removeUnusedReceiver/beforeInProperty.kt

@@ -0,0 +1,3 @@
+// "Remove redundant receiver parameter" "true"
+val <caret>Any.v: Int
+    get() = 123

idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java

@@ -45,6 +45,7 @@ import java.util.regex.Pattern;
         QuickFixTestGenerated.Override.class,
         QuickFixTestGenerated.PlatformClasses.class,
         QuickFixTestGenerated.RemoveUnused.class,
+        QuickFixTestGenerated.RemoveUnusedReceiver.class,
         QuickFixTestGenerated.Supercalls.class,
         QuickFixTestGenerated.SupertypeInitialization.class,
         QuickFixTestGenerated.Suppress.class,
@@ -3774,6 +3775,27 @@ public class QuickFixTestGenerated extends AbstractQuickFixTest {
         }
     }
 
+    @TestMetadata("idea/testData/quickfix/removeUnusedReceiver")
+    @TestDataPath("$PROJECT_ROOT")
+    @RunWith(JUnit3RunnerWithInners.class)
+    public static class RemoveUnusedReceiver extends AbstractQuickFixTest {
+        public void testAllFilesPresentInRemoveUnusedReceiver() throws Exception {
+            JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/quickfix/removeUnusedReceiver"), Pattern.compile("^before(\\w+)\\.kt$"), true);
+        }
+
+        @TestMetadata("beforeInFunction.kt")
+        public void testInFunction() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/quickfix/removeUnusedReceiver/beforeInFunction.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("beforeInProperty.kt")
+        public void testInProperty() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/quickfix/removeUnusedReceiver/beforeInProperty.kt");
+            doTest(fileName);
+        }
+    }
+
     @TestMetadata("idea/testData/quickfix/supercalls")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)