[FIR] Code cleanup: get rid of FirClass.buildUseSiteMemberScope()

compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/java/JavaClassRendering.kt

@@ -15,50 +15,46 @@ import org.jetbrains.kotlin.fir.java.declarations.FirJavaConstructor
 import org.jetbrains.kotlin.fir.java.declarations.FirJavaField
 import org.jetbrains.kotlin.fir.java.declarations.FirJavaMethod
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
-import org.jetbrains.kotlin.fir.resolve.buildUseSiteMemberScope
+import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 
 fun renderJavaClass(renderer: FirRenderer, javaClass: FirJavaClass, session: FirSession) {
-    val memberScope = javaClass.buildUseSiteMemberScope(session, ScopeSession())
+    val memberScope = javaClass.unsubstitutedScope(session, ScopeSession())
 
     val staticScope = javaClass.scopeProvider.getStaticScope(javaClass, session, ScopeSession())
 
-    if (memberScope == null && staticScope == null) {
-        javaClass.accept(renderer, null)
-    } else {
-        renderer.visitMemberDeclaration(javaClass)
-        renderer.renderSupertypes(javaClass)
-        renderer.renderInBraces {
-            val renderedDeclarations = mutableListOf<FirDeclaration>()
+    renderer.visitMemberDeclaration(javaClass)
+    renderer.renderSupertypes(javaClass)
+    renderer.renderInBraces {
+        val renderedDeclarations = mutableListOf<FirDeclaration>()
 
-            fun renderAndCache(symbol: FirCallableSymbol<*>) {
-                val enhanced = symbol.fir
-                if (enhanced !in renderedDeclarations) {
-                    enhanced.accept(renderer, null)
-                    renderer.newLine()
-                    renderedDeclarations += enhanced
-                }
+        fun renderAndCache(symbol: FirCallableSymbol<*>) {
+            val enhanced = symbol.fir
+            if (enhanced !in renderedDeclarations) {
+                enhanced.accept(renderer, null)
+                renderer.newLine()
+                renderedDeclarations += enhanced
             }
+        }
 
-            for (declaration in javaClass.declarations) {
-                if (declaration in renderedDeclarations) continue
+        for (declaration in javaClass.declarations) {
+            if (declaration in renderedDeclarations) continue
 
-                val scopeToUse =
-                    if (declaration is FirCallableMemberDeclaration<*> && declaration.status.isStatic)
-                        staticScope
-                    else
-                        memberScope
+            val scopeToUse =
+                if (declaration is FirCallableMemberDeclaration<*> && declaration.status.isStatic)
+                    staticScope
+                else
+                    memberScope
 
-                when (declaration) {
-                    is FirJavaConstructor -> scopeToUse!!.processDeclaredConstructors(::renderAndCache)
-                    is FirJavaMethod -> scopeToUse!!.processFunctionsByName(declaration.name, ::renderAndCache)
-                    is FirJavaField -> scopeToUse!!.processPropertiesByName(declaration.name, ::renderAndCache)
-                    is FirEnumEntry -> scopeToUse!!.processPropertiesByName(declaration.name, ::renderAndCache)
-                    else -> {
-                        declaration.accept(renderer, null)
-                        renderer.newLine()
-                        renderedDeclarations += declaration
-                    }
+            when (declaration) {
+                is FirJavaConstructor -> scopeToUse!!.processDeclaredConstructors(::renderAndCache)
+                is FirJavaMethod -> scopeToUse!!.processFunctionsByName(declaration.name, ::renderAndCache)
+                is FirJavaField -> scopeToUse!!.processPropertiesByName(declaration.name, ::renderAndCache)
+                is FirEnumEntry -> scopeToUse!!.processPropertiesByName(declaration.name, ::renderAndCache)
+                else -> {
+                    declaration.accept(renderer, null)
+                    renderer.newLine()
+                    renderedDeclarations += declaration
                 }
             }
         }

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt

@@ -18,11 +18,11 @@ import org.jetbrains.kotlin.fir.references.FirReference
 import org.jetbrains.kotlin.fir.references.FirResolvedNamedReference
 import org.jetbrains.kotlin.fir.references.FirSuperReference
 import org.jetbrains.kotlin.fir.render
-import org.jetbrains.kotlin.fir.resolve.buildUseSiteMemberScope
 import org.jetbrains.kotlin.fir.resolve.calls.isFunctional
 import org.jetbrains.kotlin.fir.resolve.inference.isBuiltinFunctionalType
 import org.jetbrains.kotlin.fir.resolve.inference.isSuspendFunctionType
 import org.jetbrains.kotlin.fir.resolve.toSymbol
+import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
 import org.jetbrains.kotlin.fir.symbols.impl.ConeClassLikeLookupTagImpl
 import org.jetbrains.kotlin.fir.symbols.impl.FirClassSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirConstructorSymbol
@@ -433,7 +433,7 @@ class CallAndReferenceGenerator(
                         // Fallback for FirReferencePlaceholderForResolvedAnnotations from jar
                         val fir = coneType.lookupTag.toSymbol(session)?.fir as? FirClass<*>
                         var constructorSymbol: FirConstructorSymbol? = null
-                        fir?.buildUseSiteMemberScope(session, scopeSession)?.processDeclaredConstructors {
+                        fir?.unsubstitutedScope(session, scopeSession)?.processDeclaredConstructors {
                             if (it.fir.isPrimary && constructorSymbol == null) {
                                 constructorSymbol = it
                             }

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/FakeOverrideGenerator.kt

@@ -10,8 +10,8 @@ import org.jetbrains.kotlin.fir.backend.*
 import org.jetbrains.kotlin.fir.backend.collectCallableNamesFromSupertypes
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
-import org.jetbrains.kotlin.fir.resolve.buildUseSiteMemberScope
 import org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope
+import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
 import org.jetbrains.kotlin.fir.symbols.impl.FirNamedFunctionSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirPropertySymbol
 import org.jetbrains.kotlin.ir.declarations.*
@@ -63,7 +63,7 @@ class FakeOverrideGenerator(
         val result = mutableListOf<IrDeclaration>()
         if (fakeOverrideMode == FakeOverrideMode.NONE) return emptyList()
         val superTypesCallableNames = klass.collectCallableNamesFromSupertypes(session)
-        val useSiteMemberScope = klass.buildUseSiteMemberScope(session, scopeSession) ?: return emptyList()
+        val useSiteMemberScope = klass.unsubstitutedScope(session, scopeSession)
         for (name in superTypesCallableNames) {
             if (name in processedCallableNames) continue
             processedCallableNames += name

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/lazy/Fir2IrLazyClass.kt

@@ -10,7 +10,7 @@ import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
 import org.jetbrains.kotlin.fir.backend.declareThisReceiverParameter
 import org.jetbrains.kotlin.fir.backend.toIrType
 import org.jetbrains.kotlin.fir.declarations.*
-import org.jetbrains.kotlin.fir.resolve.buildUseSiteMemberScope
+import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
 import org.jetbrains.kotlin.fir.symbols.Fir2IrClassSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirNamedFunctionSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirPropertySymbol
@@ -119,7 +119,7 @@ class Fir2IrLazyClass(
         val processedNames = mutableSetOf<Name>()
         // NB: it's necessary to take all callables from scope,
         // e.g. to avoid accessing un-enhanced Java declarations with FirJavaTypeRef etc. inside
-        val scope = fir.buildUseSiteMemberScope(session, scopeSession)!!
+        val scope = fir.unsubstitutedScope(session, scopeSession)
         scope.processDeclaredConstructors {
             result += declarationStorage.getIrConstructorSymbol(it).owner
         }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirCallResolver.kt

@@ -28,6 +28,7 @@ import org.jetbrains.kotlin.fir.resolve.transformers.StoreReceiver
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.FirExpressionsResolveTransformer
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.resultType
 import org.jetbrains.kotlin.fir.resolve.transformers.phasedFir
+import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.types.builder.buildResolvedTypeRef
@@ -360,7 +361,7 @@ class FirCallResolver(
         callInfo: CallInfo
     ): ResolutionResult? {
         var constructorSymbol: FirConstructorSymbol? = null
-        annotationClassSymbol.fir.buildUseSiteMemberScope(session, scopeSession)?.processDeclaredConstructors {
+        annotationClassSymbol.fir.unsubstitutedScope(session, scopeSession).processDeclaredConstructors {
             if (it.fir.isPrimary && constructorSymbol == null) {
                 constructorSymbol = it
             }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/SupertypeUtils.kt

@@ -14,7 +14,6 @@ import org.jetbrains.kotlin.fir.typeContext
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.scopes.FirScope
 import org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope
-import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.name.ClassId
@@ -62,10 +61,6 @@ val USE_SITE = scopeSessionKey<FirClassSymbol<*>, FirTypeScope>()
 
 data class SubstitutionScopeKey(val type: ConeClassLikeType) : ScopeSessionKey<FirClassLikeSymbol<*>, FirClassSubstitutionScope>()
 
-fun FirClass<*>.buildUseSiteMemberScope(useSiteSession: FirSession, builder: ScopeSession): FirScope? {
-    return this.unsubstitutedScope(useSiteSession, builder)
-}
-
 /* TODO REMOVE */
 fun createSubstitution(
     typeParameters: List<FirTypeParameterRef>, // TODO: or really declared?