[NI] Add support ExpectedTypeFromCast to new inference. #KT-30405 Fixed

compiler/testData/diagnostics/tests/inference/expectedTypeWithGenerics.kt

@@ -14,5 +14,5 @@ fun <S, D: S> g() {
 
     val <!UNUSED_VARIABLE!>y<!> = <!OI;TYPE_INFERENCE_UPPER_BOUND_VIOLATED!>foo<!>() as Int
 
-    val <!UNUSED_VARIABLE!>y2<!> = foo() <!NI;UNCHECKED_CAST!>as D<!>
+    val <!UNUSED_VARIABLE!>y2<!> = foo() as D
 }

compiler/testData/diagnostics/tests/inference/findViewById.kt

@@ -31,7 +31,7 @@ val xCastExplicitType = Test().findViewById<X>(0) as X
 val xSafeCastExplicitType = Test().findViewById<X>(0) <!USELESS_CAST!>as? X<!>
 
 val yExplicit: Y<String> = Test().findViewById(0)
-val yCast = Test().findViewById(0) <!NI;UNCHECKED_CAST!>as Y<String><!>
+val yCast = Test().findViewById(0) as Y<String>
 
 
 class TestChild : Test() {
@@ -39,7 +39,7 @@ class TestChild : Test() {
     val xCast = findViewById(0) as X
 
     val yExplicit: Y<String> = findViewById(0)
-    val yCast = findViewById(0) <!NI;UNCHECKED_CAST!>as Y<String><!>
+    val yCast = findViewById(0) as Y<String>
 }
 
 fun test(t: Test) {
@@ -47,7 +47,7 @@ fun test(t: Test) {
     val xCast = t.findViewById(0) as X
 
     val yExplicit: Y<String> = t.findViewById(0)
-    val yCast = t.findViewById(0) <!NI;UNCHECKED_CAST!>as Y<String><!>
+    val yCast = t.findViewById(0) as Y<String>
 }
 
 fun test2(t: Test?) {

compiler/testData/diagnostics/tests/inference/kt30405.kt

@@ -0,0 +1,16 @@
+// !WITH_NEW_INFERENCE
+// !LANGUAGE: +ExpectedTypeFromCast
+// !CHECK_TYPE
+// Issue: KT-30405
+
+inline fun <reified T> foo(): T {
+    TODO()
+}
+
+fun test() {
+    val fooCall = foo() as String // T in foo should be inferred to String
+    fooCall checkType { _<String>() }
+
+    val safeFooCall = foo() as? String
+    safeFooCall checkType { _<String?>() }
+}

compiler/testData/diagnostics/tests/inference/kt30405.txt

@@ -0,0 +1,4 @@
+package
+
+public inline fun </*0*/ reified T> foo(): T
+public fun test(): kotlin.Unit