[NI] Introduce feature for passing function references with defaults

Relates to KT-8834, we continue reducing differences between old and new
 inference. Note that as for `SamConversionPerArgument`, this feature
 is enabled in the compiler and not in the IDE to avoid breaking code
 for those users that already enabled new inference in the compiler

compiler/testData/cli/jvm/functionReferenceWithDefaultValuesFeatureIsEnabledWithNewInference.args

@@ -0,0 +1,4 @@
+$TESTDATA_DIR$/functionReferenceWithDefaultValuesFeatureIsEnabledWithNewInference.kt
+-d
+$TEMP_DIR$
+-Xnew-inference

compiler/testData/cli/jvm/functionReferenceWithDefaultValuesFeatureIsEnabledWithNewInference.kt

@@ -0,0 +1,11 @@
+fun foo(a: String, b: Int = 5): String {
+    return a + b
+}
+
+fun bar1(body: (String) -> String): String {
+    return body("something")
+}
+
+fun test() {
+    bar1(::foo)
+}

compiler/testData/cli/jvm/functionReferenceWithDefaultValuesFeatureIsEnabledWithNewInference.out

@@ -0,0 +1 @@
+OK

compiler/testData/cli/jvm/functionReferenceWithDefaultValuesFeatureIsEnabledWithXXNewInference.args

@@ -0,0 +1,4 @@
+$TESTDATA_DIR$/functionReferenceWithDefaultValuesFeatureIsEnabledWithNewInference.kt
+-d
+$TEMP_DIR$
+-XXLanguage\:+NewInference

compiler/testData/cli/jvm/functionReferenceWithDefaultValuesFeatureIsEnabledWithXXNewInference.out

@@ -0,0 +1,10 @@
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:+NewInference
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!
+
+OK

compiler/testData/codegen/box/callableReference/varargAndDefaults/bothWithCoercionToUnit.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 
 fun foo(s: String = "kotlin", vararg t: String): Boolean {

compiler/testData/codegen/box/callableReference/varargAndDefaults/boundReferences.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 // WITH_RUNTIME
 

compiler/testData/codegen/box/callableReference/varargAndDefaults/defaultAfterVararg.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 
 fun foo(vararg a: String, result: String = "OK"): String =

compiler/testData/codegen/box/callableReference/varargAndDefaults/defaultWithGenericExpectedType.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 
 fun foo(x: String, y: Char = 'K'): String = x + y
 

compiler/testData/codegen/box/callableReference/varargAndDefaults/emptyVarargAndDefault.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 
 fun foo(x: String = "O", vararg y: String): String =

compiler/testData/codegen/box/callableReference/varargAndDefaults/inline.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS, JVM_IR
 
 fun foo(vararg l: Long, s: String = "OK"): String =

compiler/testData/codegen/box/callableReference/varargAndDefaults/innerConstructorWithVararg.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 
 

compiler/testData/codegen/box/callableReference/varargAndDefaults/localFunctionWithDefault.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 
 fun call0(f: (String) -> String, x: String): String = f(x)

compiler/testData/codegen/box/callableReference/varargAndDefaults/manyDefaultsAndVararg.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 // WITH_RUNTIME
 

compiler/testData/codegen/box/callableReference/varargAndDefaults/simpleDefaultArgument.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 
 fun foo(x: String, y: String = "K"): String = x + y
 

compiler/testData/codegen/box/callableReference/varargAndDefaults/varargWithDefaultValue.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +NewInference
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
 // IGNORE_BACKEND: JS
 
 fun foo(x: Int, s: Int, vararg y: CharSequence = arrayOf("Aaa")): String =

compiler/testData/diagnostics/tests/callableReference/functionReferenceWithDefaultValueAsOtherFunctionType.kt

@@ -0,0 +1,18 @@
+// !WITH_NEW_INFERENCE
+
+fun foo(a: String, b: Int = 5): String {
+    return a + b
+}
+
+fun bar1(body: (String) -> String): String {
+    return body("something")
+}
+
+fun bar2(body: (String, Int) -> String): String {
+    return body("something", 0)
+}
+
+fun test() {
+    bar1(<!NI;UNSUPPORTED_FEATURE, OI;TYPE_MISMATCH!>::foo<!>)
+    bar2(::foo)
+}

compiler/testData/diagnostics/tests/callableReference/functionReferenceWithDefaultValueAsOtherFunctionType.txt

@@ -0,0 +1,6 @@
+package
+
+public fun bar1(/*0*/ body: (kotlin.String) -> kotlin.String): kotlin.String
+public fun bar2(/*0*/ body: (kotlin.String, kotlin.Int) -> kotlin.String): kotlin.String
+public fun foo(/*0*/ a: kotlin.String, /*1*/ b: kotlin.Int = ...): kotlin.String
+public fun test(): kotlin.Unit

compiler/testData/diagnostics/tests/callableReference/functionReferenceWithDefaultValueAsOtherFunctionType_enabled.kt

@@ -0,0 +1,18 @@
+// !LANGUAGE: +NewInference +FunctionReferenceWithDefaultValueAsOtherType
+
+fun foo(a: String, b: Int = 5): String {
+    return a + b
+}
+
+fun bar1(body: (String) -> String): String {
+    return body("something")
+}
+
+fun bar2(body: (String, Int) -> String): String {
+    return body("something", 0)
+}
+
+fun test() {
+    bar1(::foo)
+    bar2(::foo)
+}

compiler/testData/diagnostics/tests/callableReference/functionReferenceWithDefaultValueAsOtherFunctionType_enabled.txt

@@ -0,0 +1,6 @@
+package
+
+public fun bar1(/*0*/ body: (kotlin.String) -> kotlin.String): kotlin.String
+public fun bar2(/*0*/ body: (kotlin.String, kotlin.Int) -> kotlin.String): kotlin.String
+public fun foo(/*0*/ a: kotlin.String, /*1*/ b: kotlin.Int = ...): kotlin.String
+public fun test(): kotlin.Unit