Shorten References: Support 'this' simplification

idea/testData/shortenRefs/this/cantShortenThis.kt

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(n: Int): Int = <selection>this.n + 1</selection>
+}

idea/testData/shortenRefs/this/cantShortenThis.kt.after

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(n: Int): Int = this.n + 1
+}

idea/testData/shortenRefs/this/cantShortenThisLabel.kt

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun A.foo(): Int = <selection>this@A.n + n + 1</selection>
+}

idea/testData/shortenRefs/this/cantShortenThisLabel.kt.after

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun A.foo(): Int = this@A.n + n + 1
+}

idea/testData/shortenRefs/this/shortenExtensionThis.kt

@@ -0,0 +1,5 @@
+class A(val n: Int) {
+
+}
+
+fun A.foo(): Int = <selection>this.n + 1</selection>

idea/testData/shortenRefs/this/shortenExtensionThis.kt.after

@@ -0,0 +1,5 @@
+class A(val n: Int) {
+
+}
+
+fun A.foo(): Int = n + 1

idea/testData/shortenRefs/this/shortenThis.kt

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(): Int = <selection>this.n + 1</selection>
+}

idea/testData/shortenRefs/this/shortenThis.kt.after

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(): Int = n + 1
+}

idea/testData/shortenRefs/this/shortenThisBothReceivers.kt

@@ -0,0 +1,9 @@
+class A {
+    fun test(b: B) {
+        <selection>this.b()</selection>
+    }
+}
+
+class B() {
+    fun A.invoke() {}
+}

idea/testData/shortenRefs/this/shortenThisBothReceivers.kt.after

@@ -0,0 +1,9 @@
+class A {
+    fun test(b: B) {
+        b()
+    }
+}
+
+class B() {
+    fun A.invoke() {}
+}

idea/testData/shortenRefs/this/shortenThisLabel.kt

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(n: Int): Int = <selection>this@A.n + 1</selection>
+}

idea/testData/shortenRefs/this/shortenThisLabel.kt.after

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(n: Int): Int = this.n + 1
+}

idea/testData/shortenRefs/this/shortenThisWithLabel.kt

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(): Int = <selection>this@A.n + 1</selection>
+}

idea/testData/shortenRefs/this/shortenThisWithLabel.kt.after

@@ -0,0 +1,3 @@
+class A(val n: Int) {
+    fun foo(): Int = n + 1
+}

idea/testData/shortenRefs/this/visitorConflict.kt

@@ -0,0 +1,11 @@
+package test
+
+fun foo(n: Int) {
+
+}
+
+class A(val n: Int) {
+    fun test() {
+        <selection>test.foo(this@A)</selection>
+    }
+}

idea/testData/shortenRefs/this/visitorConflict.kt.after

@@ -0,0 +1,11 @@
+package test
+
+fun foo(n: Int) {
+
+}
+
+class A(val n: Int) {
+    fun test() {
+        foo(this)
+    }
+}