"Convert lambda to reference": fix case with extension 'this'

#KT-21999 Fixed

idea/src/org/jetbrains/kotlin/idea/intentions/ConvertLambdaToReferenceIntention.kt

@@ -37,6 +37,7 @@ import org.jetbrains.kotlin.resolve.BindingContext.REFERENCE_TARGET
 import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCall
 import org.jetbrains.kotlin.resolve.calls.components.hasDefaultValue
 import org.jetbrains.kotlin.resolve.descriptorUtil.isCompanionObject
+import org.jetbrains.kotlin.resolve.scopes.receivers.ExtensionReceiver
 import org.jetbrains.kotlin.resolve.scopes.utils.getImplicitReceiversHierarchy
 import org.jetbrains.kotlin.synthetic.SyntheticJavaPropertyDescriptor
 import org.jetbrains.kotlin.types.isDynamic
@@ -234,7 +235,7 @@ open class ConvertLambdaToReferenceIntention(text: String) :
                     val descriptor by lazy { receiver?.type?.constructor?.declarationDescriptor }
                     val receiverText = when {
                         receiver == null || descriptor?.isCompanionObject() == true -> ""
-                        lambdaExpression.getResolutionScope().getImplicitReceiversHierarchy().size == 1 -> "this"
+                        receiver is ExtensionReceiver || lambdaExpression.getResolutionScope().getImplicitReceiversHierarchy().size == 1 -> "this"
                         else -> descriptor?.name?.let { "this@$it" } ?: return null
                     }
                     "$receiverText::${singleStatement.getCallReferencedName()}"

idea/testData/intentions/convertLambdaToReference/memberInScopeFunction.kt

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+fun foo(f: () -> Unit) {}
+
+class Bar {
+    fun bar() {}
+}
+
+class Test {
+    fun test() {
+        with(Bar()) {
+            foo { <caret>bar() }
+        }
+    }
+}

idea/testData/intentions/convertLambdaToReference/memberInScopeFunction.kt.after

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+fun foo(f: () -> Unit) {}
+
+class Bar {
+    fun bar() {}
+}
+
+class Test {
+    fun test() {
+        with(Bar()) {
+            foo(this::bar)
+        }
+    }
+}

idea/testData/intentions/convertLambdaToReference/memberInScopeFunction2.kt

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+fun foo(f: () -> Unit) {}
+
+class Bar {
+    fun bar() {}
+}
+
+class Test {
+    fun test() {
+        Bar().run {
+            foo { <caret>bar() }
+        }
+    }
+}

idea/testData/intentions/convertLambdaToReference/memberInScopeFunction2.kt.after

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+fun foo(f: () -> Unit) {}
+
+class Bar {
+    fun bar() {}
+}
+
+class Test {
+    fun test() {
+        Bar().run {
+            foo(this::bar)
+        }
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -5210,16 +5210,16 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             runTest("idea/testData/intentions/convertLambdaToReference/extension.kt");
         }
 
+        @TestMetadata("extensionOuterScope.kt")
+        public void testExtensionOuterScope() throws Exception {
+            runTest("idea/testData/intentions/convertLambdaToReference/extensionOuterScope.kt");
+        }
+
         @TestMetadata("extensionProperty.kt")
         public void testExtensionProperty() throws Exception {
             runTest("idea/testData/intentions/convertLambdaToReference/extensionProperty.kt");
         }
 
-        @TestMetadata("extentionOuterScope.kt")
-        public void testExtentionOuterScope() throws Exception {
-            runTest("idea/testData/intentions/convertLambdaToReference/extentionOuterScope.kt");
-        }
-
         @TestMetadata("fqNameForReceiver.kt")
         public void testFqNameForReceiver() throws Exception {
             runTest("idea/testData/intentions/convertLambdaToReference/fqNameForReceiver.kt");
@@ -5285,6 +5285,16 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             runTest("idea/testData/intentions/convertLambdaToReference/memberInLambdaArgument.kt");
         }
 
+        @TestMetadata("memberInScopeFunction.kt")
+        public void testMemberInScopeFunction() throws Exception {
+            runTest("idea/testData/intentions/convertLambdaToReference/memberInScopeFunction.kt");
+        }
+
+        @TestMetadata("memberInScopeFunction2.kt")
+        public void testMemberInScopeFunction2() throws Exception {
+            runTest("idea/testData/intentions/convertLambdaToReference/memberInScopeFunction2.kt");
+        }
+
         @TestMetadata("memberOuterScope.kt")
         public void testMemberOuterScope() throws Exception {
             runTest("idea/testData/intentions/convertLambdaToReference/memberOuterScope.kt");