KT-5875 Support code completion after "return@"

#KT-5875 Fixed

idea/testData/completion/keywords/InFunctionExpressionBody.kt

@@ -9,11 +9,10 @@ fun foo() = <caret>
 // EXIST: null
 // EXIST: object
 // EXIST: package
-// EXIST: return
 // EXIST: super
 // EXIST: throw
 // EXIST: true
 // EXIST: try
 // EXIST: when
 // EXIST: while
-// NUMBER: 16
+// NUMBER: 15

idea/testData/completion/keywords/InGetterExpressionBody.kt

@@ -10,11 +10,10 @@ val prop: Int
 // EXIST: null
 // EXIST: object
 // EXIST: package
-// EXIST: return
 // EXIST: super
 // EXIST: throw
 // EXIST: true
 // EXIST: try
 // EXIST: when
 // EXIST: while
-// NUMBER: 16
+// NUMBER: 15

idea/testData/completion/keywords/InPropertyInitializer.kt

@@ -9,11 +9,10 @@ var a : Int = <caret>
 // EXIST: null
 // EXIST: object
 // EXIST: package
-// EXIST: return
 // EXIST: super
 // EXIST: throw
 // EXIST: true
 // EXIST: try
 // EXIST: when
 // EXIST: while
-// NUMBER: 16
+// NUMBER: 15

idea/testData/completion/keywords/Return1.kt

@@ -0,0 +1,14 @@
+fun foo() {
+    takeHandler1 {
+        takeHandler2({ ret<caret> })
+    }
+}
+
+inline fun takeHandler1(handler: () -> Unit){}
+inline fun takeHandler2(handler: () -> Unit){}
+
+// INVOCATION_COUNT: 1
+// EXIST: { lookupString: "return", itemText: "return", tailText: null, attributes: "bold" }
+// EXIST: { lookupString: "return@takeHandler1", itemText: "return", tailText: "@takeHandler1", attributes: "bold" }
+// EXIST: { lookupString: "return@takeHandler2", itemText: "return", tailText: "@takeHandler2", attributes: "bold" }
+// NUMBER: 3

idea/testData/completion/keywords/Return2.kt

@@ -0,0 +1,13 @@
+fun foo() {
+    takeHandler1 {
+        takeHandler2 { <caret> }
+    }
+}
+
+fun takeHandler1(handler: () -> Unit){}
+inline fun takeHandler2(handler: () -> Unit){}
+
+// INVOCATION_COUNT: 1
+// ABSENT: return
+// EXIST: { lookupString: "return@takeHandler1", itemText: "return", tailText: "@takeHandler1", attributes: "bold" }
+// EXIST: { lookupString: "return@takeHandler2", itemText: "return", tailText: "@takeHandler2", attributes: "bold" }

idea/testData/completion/keywords/Return3.kt

@@ -0,0 +1,13 @@
+fun foo() {
+    takeHandler1 {
+        takeHandler2 { <caret> }
+    }
+}
+
+fun takeHandler1(handler: () -> Unit){}
+fun takeHandler2(handler: () -> Unit){}
+
+// INVOCATION_COUNT: 1
+// ABSENT: return
+// ABSENT: return@takeHandler1
+// EXIST: { lookupString: "return@takeHandler2", itemText: "return", tailText: "@takeHandler2", attributes: "bold" }

idea/testData/completion/keywords/Return4.kt

@@ -0,0 +1,12 @@
+fun foo() {
+    takeHandler @label {
+        <caret>
+    }
+}
+
+fun takeHandler(handler: () -> Unit){}
+
+// INVOCATION_COUNT: 1
+// ABSENT: return
+// ABSENT: "return@takeHandler"
+// EXIST: { lookupString: "return@label", itemText: "return", tailText: "@label", attributes: "bold" }

idea/testData/completion/keywords/Return5.kt

@@ -0,0 +1,12 @@
+fun foo() {
+    takeHandler @label {
+        <caret>
+    }
+}
+
+inline fun takeHandler(handler: () -> Unit){}
+
+// INVOCATION_COUNT: 1
+// EXIST: { lookupString: "return", itemText: "return", tailText: null, attributes: "bold" }
+// ABSENT: "return@takeHandler"
+// EXIST: { lookupString: "return@label", itemText: "return", tailText: "@label", attributes: "bold" }

idea/testData/completion/keywords/Return6.kt

@@ -0,0 +1,13 @@
+fun foo() {
+    takeHandler1 {
+        takeHandler2({ return@<caret> })
+    }
+}
+
+inline fun takeHandler1(handler: () -> Unit){}
+inline fun takeHandler2(handler: () -> Unit){}
+
+// INVOCATION_COUNT: 1
+// EXIST: { lookupString: "return@takeHandler1", itemText: "return", tailText: "@takeHandler1", attributes: "bold" }
+// EXIST: { lookupString: "return@takeHandler2", itemText: "return", tailText: "@takeHandler2", attributes: "bold" }
+// NUMBER: 2

idea/testData/completion/keywords/Return7.kt

@@ -0,0 +1,6 @@
+val property: Int
+    get() {
+        <caret>
+    }
+
+// EXIST: return

idea/testData/completion/keywords/Return8.kt

@@ -0,0 +1,3 @@
+fun foo(p: Int?): Int = p ?: <caret>
+
+// ABSENT: return

idea/testData/completion/keywords/Return9.kt

@@ -0,0 +1,9 @@
+inline fun run (p: () -> Unit) {}
+
+fun foo() = run {
+    <caret>
+}
+
+// INVOCATION_COUNT: 1
+// EXIST: { lookupString: "return@run", itemText: "return", tailText: "@run", attributes: "bold" }
+// ABSENT: return