[AA] Include inner classes in non-static Java declared member scopes

- `FirNoClassifiersScope` erroneously filtered out inner classes from
  non-static Java declared member scopes.

^KT-61800

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirScopeProvider.kt

@@ -115,8 +115,8 @@ internal class KtFirScopeProvider(
         val scopeSession = getScopeSession()
 
         val firScope = when (kind) {
-            // `FirNoClassifiersScope` is a workaround for non-static member scopes containing classifiers (see KT-61900).
-            DeclaredMemberScopeKind.NON_STATIC -> FirNoClassifiersScope(
+            // `FirExcludingNonInnerClassesScope` is a workaround for non-static member scopes containing static classes (see KT-61900).
+            DeclaredMemberScopeKind.NON_STATIC -> FirExcludingNonInnerClassesScope(
                 JavaScopeProvider.getUseSiteMemberScope(
                     firJavaClass,
                     useSiteSession,

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/scopes/FirExcludingNonInnerClassesScope.kt

@@ -11,9 +11,12 @@ import org.jetbrains.kotlin.fir.scopes.FirDelegatingContainingNamesAwareScope
 import org.jetbrains.kotlin.fir.symbols.impl.FirClassifierSymbol
 import org.jetbrains.kotlin.name.Name
 
-internal class FirNoClassifiersScope(delegate: FirContainingNamesAwareScope) : FirDelegatingContainingNamesAwareScope(delegate) {
-    override fun getClassifierNames(): Set<Name> = emptySet()
+internal class FirExcludingNonInnerClassesScope(
+    private val delegate: FirContainingNamesAwareScope,
+) : FirDelegatingContainingNamesAwareScope(delegate) {
+    override fun getClassifierNames(): Set<Name> = delegate.getClassifierNames()
 
     override fun processClassifiersByNameWithSubstitution(name: Name, processor: (FirClassifierSymbol<*>, ConeSubstitutor) -> Unit) {
+        delegate.processInnerClassesByName(name, processor)
     }
 }

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/scopes/FirJavaDeclaredMembersOnlyScope.kt

@@ -32,6 +32,8 @@ internal class FirJavaDeclaredMembersOnlyScope(
                 && origin !is FirDeclarationOrigin.SubstitutionOverride
                 && origin != FirDeclarationOrigin.IntersectionOverride
 
+    private fun FirRegularClass.isDeclared(): Boolean = symbol.classId.parentClassId == owner.classId
+
     override fun isTargetCallable(callable: FirCallableSymbol<*>): Boolean =
         callable.callableId.callableName != SpecialNames.INIT && callable.fir.isDeclared()
 
@@ -42,9 +44,13 @@ internal class FirJavaDeclaredMembersOnlyScope(
     override fun getClassifierNames(): Set<Name> = delegate.getClassifierNames()
 
     override fun processClassifiersByNameWithSubstitution(name: Name, processor: (FirClassifierSymbol<*>, ConeSubstitutor) -> Unit) {
-        // We do not need to filter classifiers, because for both Kotlin and Java classes, a static base scope cannot contain classifiers
-        // inherited from supertypes. See `getStaticMemberScope` in `KtScopeProvider` for more information on classifiers in static scopes.
-        delegate.processClassifiersByNameWithSubstitution(name, processor)
+        // We have to filter out classes from supertypes because the base scope might be a use-site scope that provides inner classes from
+        // supertypes.
+        delegate.processClassifiersByNameWithSubstitution(name) { classifier, substitutor ->
+            if (classifier is FirRegularClassSymbol && classifier.fir.isDeclared()) {
+                processor(classifier, substitutor)
+            }
+        }
     }
 
     override fun toString(): String = "Declared member scope for $delegate with owning class `${owner.classId}`"

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/scopes/FirNonStaticMembersScope.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.fir.declarations.utils.isInner
 import org.jetbrains.kotlin.fir.declarations.utils.isStatic
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
 import org.jetbrains.kotlin.fir.scopes.FirContainingNamesAwareScope
+import org.jetbrains.kotlin.fir.scopes.FirScope
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirClassifierSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirConstructorSymbol
@@ -46,15 +47,15 @@ internal class FirNonStaticMembersScope(
     override fun getClassifierNames(): Set<Name> = delegate.getClassifierNames()
 
     override fun processClassifiersByNameWithSubstitution(name: Name, processor: (FirClassifierSymbol<*>, ConeSubstitutor) -> Unit) {
-        processInnerClassesByName(name, processor)
+        delegate.processInnerClassesByName(name, processor)
     }
+}
 
-    private fun processInnerClassesByName(name: Name, processor: (FirClassifierSymbol<*>, ConeSubstitutor) -> Unit) {
-        delegate.processClassifiersByNameWithSubstitution(name) { classifier, substitutor ->
-            val firDeclaration = classifier.fir
-            if (firDeclaration is FirMemberDeclaration && firDeclaration.isInner) {
-                processor(classifier, substitutor)
-            }
+internal fun FirScope.processInnerClassesByName(name: Name, processor: (FirClassifierSymbol<*>, ConeSubstitutor) -> Unit) {
+    processClassifiersByNameWithSubstitution(name) { classifier, substitutor ->
+        val firDeclaration = classifier.fir
+        if (firDeclaration is FirMemberDeclaration && firDeclaration.isInner) {
+            processor(classifier, substitutor)
         }
     }
 }