Preliminary implementation of parts & facade in FIR-based compiler

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

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.fir.declarations
 
 import org.jetbrains.kotlin.fir.VisitedSupertype
 import org.jetbrains.kotlin.fir.visitors.FirVisitor
+import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedContainerSource
 
 interface FirCallableMemberDeclaration : @VisitedSupertype FirDeclaration, FirMemberDeclaration, FirCallableDeclaration {
 
@@ -14,6 +15,8 @@ interface FirCallableMemberDeclaration : @VisitedSupertype FirDeclaration, FirMe
 
     val isStatic: Boolean get() = status.isStatic
 
+    val containerSource: DeserializedContainerSource? get() = null
+
     override fun <R, D> accept(visitor: FirVisitor<R, D>, data: D): R = visitor.visitCallableMemberDeclaration(this, data)
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {

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

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.fir.transformSingle
 import org.jetbrains.kotlin.fir.types.FirTypeRef
 import org.jetbrains.kotlin.fir.visitors.FirTransformer
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedContainerSource
 
 abstract class FirAbstractCallableMember : FirAbstractMemberDeclaration, FirCallableMemberDeclaration {
 
@@ -22,6 +23,8 @@ abstract class FirAbstractCallableMember : FirAbstractMemberDeclaration, FirCall
     final override var receiverTypeRef: FirTypeRef?
     final override var returnTypeRef: FirTypeRef
 
+    override var containerSource: DeserializedContainerSource? = null
+
     override fun <D> transformReturnTypeRef(transformer: FirTransformer<D>, data: D) {
         returnTypeRef = returnTypeRef.transformSingle(transformer, data)
     }