Quick fix for deprecated async syntax

idea/testData/inspections/cleanup/cleanup.kt

@@ -76,3 +76,23 @@ val x = C() willBeInfix 1
 fun infixTest() {
     arrayListOf(1, 2, 3) map { it }
 }
+
+fun async(f: () -> Unit) {}
+infix fun Any.async(f: () -> Unit) {}
+
+fun test(foo: Any) {
+    async {  }
+    async /**/ {  }
+    foo async {  }
+
+    async() { }
+
+    async({ })
+    foo async ({ })
+
+    foo async fun () {}
+    foo async (fun () {})
+
+    async (fun () {})
+}
+

idea/testData/inspections/cleanup/cleanup.kt.after

@@ -75,3 +75,23 @@ val x = C() willBeInfix 1
 fun infixTest() {
     arrayListOf(1, 2, 3).map { it }
 }
+
+fun async(f: () -> Unit) {}
+infix fun Any.async(f: () -> Unit) {}
+
+fun test(foo: Any) {
+    async() {  }
+    async() /**/ {  }
+    foo async ({  })
+
+    async() { }
+
+    async({ })
+    foo async ({ })
+
+    foo async (fun () {})
+    foo async (fun () {})
+
+    async (fun () {})
+}
+

idea/testData/quickfix/asyncUnsupported/asyncInfixCall.kt

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+infix fun Any.async(f: () -> Unit) = f()
+
+fun test(foo: Any) {
+    foo <caret>async { }
+}

idea/testData/quickfix/asyncUnsupported/asyncInfixCall.kt.after

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+infix fun Any.async(f: () -> Unit) = f()
+
+fun test(foo: Any) {
+    foo <caret>async ({ })
+}

idea/testData/quickfix/asyncUnsupported/asyncInfixCallWithFun.kt

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+infix fun Any.async(f: () -> Unit) = f()
+
+fun test(foo: Any) {
+    foo async<caret> fun () {}
+}

idea/testData/quickfix/asyncUnsupported/asyncInfixCallWithFun.kt.after

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+infix fun Any.async(f: () -> Unit) = f()
+
+fun test(foo: Any) {
+    foo async<caret> (fun () {})
+}

idea/testData/quickfix/asyncUnsupported/asyncWithLambda.kt

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+fun async(f: () -> Unit) {}
+
+fun test() {
+    asy<caret>nc {  }
+}

idea/testData/quickfix/asyncUnsupported/asyncWithLambda.kt.after

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+fun async(f: () -> Unit) {}
+
+fun test() {
+    asy<caret>nc() {  }
+}

idea/testData/quickfix/asyncUnsupported/asyncWithLambdaAndComment.kt

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+fun async(f: () -> Unit) {}
+
+fun test() {
+    async<caret> /**/ {  }
+}

idea/testData/quickfix/asyncUnsupported/asyncWithLambdaAndComment.kt.after

@@ -0,0 +1,6 @@
+// "Migrate unsupported async syntax" "true"
+fun async(f: () -> Unit) {}
+
+fun test() {
+    async<caret>() /**/ {  }
+}