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K2: Do not use KFunctionN as representation type for adapted references

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Beside some corner cases, it's already prohibited in K1 because
adaptation have a bit strange nature
(they don't represent any existing real function exactly)

^KT-55137 Fixed
This commit is contained in:
Denis.Zharkov
2022-11-25 18:19:10 +01:00
committed by Space Team
parent dcdc48a233
commit a38040680c
17 changed files with 102 additions and 18 deletions
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compiler/testData/diagnostics/tests/callableReference/adapted/noKFunctionForAdaptation.fir.kt
Vendored
+16
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@@ -0,0 +1,16 @@
// SKIP_TXT
fun foo(x: String = "O"): String = x
fun bar(x: String = "K"): String = x
fun dump(dumpStrategy: String) {
val k0: kotlin.reflect.KFunction0<String> = <!INAPPLICABLE_CANDIDATE!>returnAdapter<!>(::<!UNRESOLVED_REFERENCE!>foo<!>) // Error: ADAPTED_CALLABLE_REFERENCE_AGAINST_REFLECTION_TYPE
val k1: kotlin.reflect.KFunction0<String> = ::<!UNRESOLVED_REFERENCE!>foo<!>
// Should be error here, too
val k2: kotlin.reflect.KFunction0<String> = if (dumpStrategy == "KotlinLike") ::<!UNRESOLVED_REFERENCE!>foo<!> else ::<!UNRESOLVED_REFERENCE!>bar<!>
val f0: Function0<String> = <!INAPPLICABLE_CANDIDATE!>returnAdapter<!>(::<!UNRESOLVED_REFERENCE!>foo<!>)
val f1: Function0<String> = ::foo
val f2: Function0<String> = if (dumpStrategy == "KotlinLike") ::<!UNRESOLVED_REFERENCE!>foo<!> else ::<!UNRESOLVED_REFERENCE!>bar<!>
}
fun returnAdapter(a: kotlin.reflect.KFunction0<String>) = a