[FE 1.0] Properly handle intersection types in check if cast possible or not

^KT-47685 Fixed
2021-07-12 10:43:53 +03:00
parent f0c4d06fc9
commit 47b0071560
8 changed files with 123 additions and 0 deletions
@@ -43,6 +43,10 @@ object CastDiagnosticsUtil {
        rhsType: KotlinType,
        platformToKotlinClassMapper: PlatformToKotlinClassMapper
    ): Boolean {
+        val typeConstructor = lhsType.constructor
+        if (typeConstructor is IntersectionTypeConstructor) {
+            return typeConstructor.supertypes.any { isCastPossible(it, rhsType, platformToKotlinClassMapper) }
+        }
        val rhsNullable = TypeUtils.isNullableType(rhsType)
        val lhsNullable = TypeUtils.isNullableType(lhsType)
        if (KotlinBuiltIns.isNothing(lhsType)) return true