Migrate testdata to new lambda syntax

compiler/testData/codegen/box/functions/functionLiteralExpression.kt

@@ -8,17 +8,17 @@ fun Int.foo2() : (i : Int) -> Int {
 
 fun fooT1<T>(t : T) = { t.toString() }
 
-fun fooT2<T>(t: T) = { (x:T) -> t.toString() + x.toString() }
+fun fooT2<T>(t: T) = { x:T -> t.toString() + x.toString() }
 
 fun box() : String {
   if( (10.foo1())() != "23910") return "foo1 fail"
   if( (10.foo2())(1) != 11 ) return "foo2 fail"
 
-  if(1.{Int.() -> this + 1}() != 2) return "test 3 failed";
+  if(1.(fun Int.() = this + 1)() != 2) return "test 3 failed";
   if(  {1}() != 1)  return "test 4 failed";
-  if(  {(x : Int) -> x}(1) != 1)  return "test 5 failed";
-  if(  1.{Int.(x : Int) -> x + this}(1) != 2) return "test 6 failed";
-  if(  1.({Int.() -> this})() != 1)  return "test 7 failed";
+  if(  {x : Int -> x}(1) != 1)  return "test 5 failed";
+  if(  1.(fun Int.(x: Int) = x + this)(1) != 2) return "test 6 failed";
+  if(  1.(fun Int.() = this)() != 1)  return "test 7 failed";
   if(  (fooT1<String>("mama"))() != "mama")  return "test 8 failed";
   if(  (fooT2<String>("mama"))("papa") != "mamapapa")  return "test 9 failed";
   return "OK"

compiler/testData/codegen/box/functions/functionNtoString.kt

@@ -7,22 +7,22 @@ fun check(expected: String, obj: Any?) {
 
 fun box(): String {
     check("kotlin.Function0<kotlin.Unit>")
-        { () : Unit -> }
+    { -> }
     check("kotlin.Function0<java.lang.Integer>")
-        { () : Int -> 42 }
-    check("kotlin.Function1<java.lang.String, java.lang.Long>")
-        { (s: String) : Long -> 42.toLong() }
+    {  -> 42 }
+    check("kotlin.Function1<java.lang.String, java.lang.Long>",
+          fun (s: String) = 42.toLong())
     check("kotlin.Function2<java.lang.Integer, java.lang.Integer, kotlin.Unit>")
-        { (x: Int, y: Int) : Unit -> }
+    { x: Int, y: Int -> }
 
-    check("kotlin.ExtensionFunction0<java.lang.Integer, kotlin.Unit>")
-        { Int.() : Unit -> }
-    check("kotlin.ExtensionFunction0<kotlin.Unit, java.lang.Integer>")
-        { Unit.() : Int -> 42 }
-    check("kotlin.ExtensionFunction1<java.lang.String, java.lang.String, java.lang.Long>")
-        { String.(s: String) : Long -> 42.toLong() }
-    check("kotlin.ExtensionFunction2<java.lang.Integer, java.lang.Integer, java.lang.Integer, kotlin.Unit>")
-        { Int.(x: Int, y: Int) : Unit -> }
+    check("kotlin.ExtensionFunction0<java.lang.Integer, kotlin.Unit>",
+          fun Int.() {})
+    check("kotlin.ExtensionFunction0<kotlin.Unit, java.lang.Integer>",
+          fun Unit.(): Int = 42)
+    check("kotlin.ExtensionFunction1<java.lang.String, java.lang.String, java.lang.Long>",
+          fun String.(s: String): Long = 42.toLong())
+    check("kotlin.ExtensionFunction2<java.lang.Integer, java.lang.Integer, java.lang.Integer, kotlin.Unit>",
+          fun Int.(x: Int, y: Int) {})
 
     return "OK"
-}
+}

compiler/testData/codegen/box/functions/invoke/extensionInvokeOnExpr.kt

@@ -13,8 +13,8 @@ fun B.test(): String {
     if (foo()() != "##") return "fail3"
     if (foo()(42) != "#42") return "fail4"
     if ((foo())(42) != "#42") return "fail5"
-    if ({() -> A()}()() != "##") return "fail6"
-    if ({() -> A()}()(37) != "#37") return "fail7"
+    if ({ -> A()}()() != "##") return "fail6"
+    if ({ -> A()}()(37) != "#37") return "fail7"
     return "OK"
 }
 

compiler/testData/codegen/box/functions/invoke/invokeOnExprByConvention.kt

@@ -14,7 +14,7 @@ fun box(): String {
     if (foo()() != "##") return "fail3"
     if (foo()(42) != "#42") return "fail4"
     if ((foo())(42) != "#42") return "fail5"
-    if ({() -> A()}()() != "##") return "fail6"
-    if ({() -> A()}()(37) != "#37") return "fail7"
+    if ({ -> A()}()() != "##") return "fail6"
+    if ({ -> A()}()(37) != "#37") return "fail7"
     return "OK"
 }

compiler/testData/codegen/box/functions/kt395.kt

@@ -1,6 +1,6 @@
 fun Any.with(operation :  Any.() -> Any) = operation().toString()
 
-val f = { (a : Int) :Unit -> }
+val f = { a : Int -> }
 
 fun box () : String {
     return if(20.with {

compiler/testData/codegen/box/functions/kt785.kt

@@ -1,7 +1,7 @@
 class A() {
     var x : Int = 0
 
-    var z = { () ->
+    var z = {
         x++
     }
 }

compiler/testData/codegen/box/functions/localFunctions/kt2895.kt

@@ -2,7 +2,7 @@ fun outer() {
     fun inner(i: Int) {
         if (i > 0){
             {
-                (it: Int) -> inner(0) // <- invocation of literal itself is generated instead
+                it: Int -> inner(0) // <- invocation of literal itself is generated instead
             }.invoke(1)
         }
     }