Supported inline function for expression body case

idea/testData/refactoring/inline/function/expressionBody/ComplexArgumentNotUsed.kt

@@ -0,0 +1,11 @@
+fun <caret>f(p: Int) = g()
+
+fun g() {
+}
+
+fun complexFun(): Int {
+}
+
+fun main(args: Array<String>) {
+    f(complexFun())
+}

idea/testData/refactoring/inline/function/expressionBody/ComplexArgumentNotUsed.kt.after

@@ -0,0 +1,10 @@
+fun g() {
+}
+
+fun complexFun(): Int {
+}
+
+fun main(args: Array<String>) {
+    complexFun()
+    g()
+}

idea/testData/refactoring/inline/function/expressionBody/ComplexArgumentUsedTwice.kt

@@ -0,0 +1,8 @@
+fun <caret>f(p: Int) = p + p
+
+fun complexFun(): Int {
+}
+
+fun main(args: Array<String>) {
+    f(complexFun())
+}

idea/testData/refactoring/inline/function/expressionBody/ComplexArgumentUsedTwice.kt.after

@@ -0,0 +1,7 @@
+fun complexFun(): Int {
+}
+
+fun main(args: Array<String>) {
+    val p = complexFun()
+    p + p
+}

idea/testData/refactoring/inline/function/expressionBody/Constant.kt

@@ -0,0 +1,5 @@
+fun <caret>f() = "foo"
+
+fun main(args: Array<String>) {
+    println(f() + f())
+}

idea/testData/refactoring/inline/function/expressionBody/Constant.kt.after

@@ -0,0 +1,3 @@
+fun main(args: Array<String>) {
+    println("foo" + "foo")
+}

idea/testData/refactoring/inline/function/expressionBody/FromUsage.kt

@@ -0,0 +1,7 @@
+fun f(p1: Int, p2: Int) = p1 + p2
+
+fun main(args: Array<String>) {
+    println(f(1, 2))
+    println(<caret>f(3, 4))
+    println(f(5, 6))
+}

idea/testData/refactoring/inline/function/expressionBody/FromUsage.kt.after

@@ -0,0 +1,5 @@
+fun main(args: Array<String>) {
+    println(1 + 2)
+    println(3 + 4)
+    println(5 + 6)
+}

idea/testData/refactoring/inline/function/expressionBody/FunctionalParameterPassed.kt

@@ -0,0 +1,10 @@
+fun <caret>foo(p1: String, p2: () -> Boolean) = bar(p1, null, p2)
+
+fun bar(p1: String, p2: String?, p3: () -> Boolean)
+
+fun foo(i: I) {
+    foo("foo") {
+        println("bar")
+        println("baz")
+    }
+}

idea/testData/refactoring/inline/function/expressionBody/FunctionalParameterPassed.kt.after

@@ -0,0 +1,8 @@
+fun bar(p1: String, p2: String?, p3: () -> Boolean)
+
+fun foo(i: I) {
+    bar("foo", null) {
+        println("bar")
+        println("baz")
+    }
+}

idea/testData/refactoring/inline/function/expressionBody/Simple.kt

@@ -0,0 +1,5 @@
+fun <caret>f(p1: Int, p2: Int) = p1 + p2
+
+fun main(args: Array<String>) {
+    println(f(3, 5))
+}

idea/testData/refactoring/inline/function/expressionBody/Simple.kt.after

@@ -0,0 +1,3 @@
+fun main(args: Array<String>) {
+    println(3 + 5)
+}