FIR: Introduce FirClassLikeDeclaration::supertypesComputationStatus

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/declarations/FirJavaClass.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.Visibility
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.declarations.FirClassLikeDeclaration
 import org.jetbrains.kotlin.fir.declarations.FirDeclaration
 import org.jetbrains.kotlin.fir.declarations.FirRegularClass
 import org.jetbrains.kotlin.fir.declarations.FirResolvePhase
@@ -60,4 +61,6 @@ class FirJavaClass internal constructor(
 
     override fun setCallbackOnSupertypesComputed(callback: () -> Unit) =
         error("Supertypes computation should happen just before the instance is published")
+
+    override var supertypesComputationStatus = FirClassLikeDeclaration.SupertypesComputationStatus.NOT_COMPUTED
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/FirClassLikeDeclaration.kt

@@ -25,6 +25,12 @@ interface FirClassLikeDeclaration<F : FirClassLikeDeclaration<F>> :
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         super<FirMemberDeclaration>.acceptChildren(visitor, data)
     }
+
+    enum class SupertypesComputationStatus {
+        NOT_COMPUTED, COMPUTING, COMPUTED
+    }
+
+    var supertypesComputationStatus: SupertypesComputationStatus
 }
 
 fun ConeClassifierSymbol.toFirClassLike(): FirClassLikeDeclaration<*>? =

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/FirEnumEntry.kt

@@ -27,4 +27,6 @@ abstract class FirEnumEntry(
         typeRef.accept(visitor, data)
         super<FirRegularClass>.acceptChildren(visitor, data)
     }
+
+    override var supertypesComputationStatus = FirClassLikeDeclaration.SupertypesComputationStatus.NOT_COMPUTED
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirClassImpl.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.Visibility
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.declarations.FirClassLikeDeclaration
 import org.jetbrains.kotlin.fir.declarations.FirDeclaration
 import org.jetbrains.kotlin.fir.declarations.FirRegularClass
 import org.jetbrains.kotlin.fir.symbols.impl.FirClassSymbol
@@ -84,4 +85,6 @@ open class FirClassImpl(
     override fun setCallbackOnSupertypesComputed(callback: () -> Unit) {
         callbackOnSupertypesComputed = callback
     }
+
+    override var supertypesComputationStatus = FirClassLikeDeclaration.SupertypesComputationStatus.NOT_COMPUTED
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirTypeAliasImpl.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.Visibility
 import org.jetbrains.kotlin.fir.FirElement
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.declarations.FirClassLikeDeclaration
 import org.jetbrains.kotlin.fir.declarations.FirTypeAlias
 import org.jetbrains.kotlin.fir.symbols.impl.FirTypeAliasSymbol
 import org.jetbrains.kotlin.fir.transformSingle
@@ -42,4 +43,6 @@ class FirTypeAliasImpl(
 
         return super<FirAbstractMemberDeclaration>.transformChildren(transformer, data)
     }
+
+    override var supertypesComputationStatus = FirClassLikeDeclaration.SupertypesComputationStatus.NOT_COMPUTED
 }