FIR IDE: do not require containing declaration for getting overridden symbols

idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/KtAnalysisSession.kt

@@ -56,9 +56,13 @@ abstract class KtAnalysisSession(final override val token: ValidityToken) : Vali
 
     abstract fun createContextDependentCopy(originalKtFile: KtFile, fakeKtElement: KtElement): KtAnalysisSession
 
+    //TODO get rid of it
     fun KtCallableSymbol.getOverriddenSymbols(containingDeclaration: KtClassOrObjectSymbol): List<KtCallableSymbol> =
         symbolDeclarationOverridesProvider.getOverriddenSymbols(this, containingDeclaration)
 
+    fun KtCallableSymbol.getOverriddenSymbols(): List<KtCallableSymbol> =
+        symbolDeclarationOverridesProvider.getOverriddenSymbols(this)
+
     fun KtCallableSymbol.getIntersectionOverriddenSymbols(): Collection<KtCallableSymbol> =
         symbolDeclarationOverridesProvider.getIntersectionOverriddenSymbols(this)
 
@@ -75,6 +79,8 @@ abstract class KtAnalysisSession(final override val token: ValidityToken) : Vali
 
     infix fun KtType.isSubTypeOf(superType: KtType): Boolean = subtypingComponent.isSubTypeOf(this, superType)
 
+    infix fun KtType.isNotSubTypeOf(superType: KtType): Boolean = !subtypingComponent.isSubTypeOf(this, superType)
+
     fun PsiElement.getExpectedType(): KtType? = expressionTypeProvider.getExpectedType(this)
 
     val builtinTypes: KtBuiltinTypes get() = typeProvider.builtinTypes

idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/components/KtSymbolDeclarationOverridesProvider.kt

@@ -18,6 +18,13 @@ abstract class KtSymbolDeclarationOverridesProvider : KtAnalysisSessionComponent
         containingDeclaration: KtClassOrObjectSymbol
     ): List<KtCallableSymbol>
 
+    /**
+     * Returns symbols that overridden by requested
+     */
+    abstract fun <T : KtSymbol> getOverriddenSymbols(
+        callableSymbol: T,
+    ): List<KtCallableSymbol>
+
     /**
      * If [symbol] origin is [org.jetbrains.kotlin.idea.frontend.api.symbols.KtSymbolOrigin.INTERSECTION_OVERRIDE]
      * Then returns the symbols which [symbol] overrides, otherwise empty collection

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/components/KtFirSymbolDeclarationOverridesProvider.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.idea.frontend.api.fir.KtFirAnalysisSession
 import org.jetbrains.kotlin.idea.frontend.api.fir.symbols.KtFirClassOrObjectSymbol
 import org.jetbrains.kotlin.idea.frontend.api.fir.symbols.KtFirSymbol
 import org.jetbrains.kotlin.idea.frontend.api.symbols.*
+import org.jetbrains.kotlin.idea.frontend.api.symbols.markers.KtSymbolWithKind
 
 internal class KtFirSymbolDeclarationOverridesProvider(
     override val analysisSession: KtFirAnalysisSession,
@@ -70,6 +71,11 @@ internal class KtFirSymbolDeclarationOverridesProvider(
         }
     }
 
+    override fun <T : KtSymbol> getOverriddenSymbols(callableSymbol: T): List<KtCallableSymbol> = with(analysisSession) {
+        val containingDeclaration = (callableSymbol as? KtSymbolWithKind)?.getContainingSymbol() as? KtClassOrObjectSymbol ?: return emptyList()
+        getOverriddenSymbols(callableSymbol, containingDeclaration)
+    }
+
     override fun getIntersectionOverriddenSymbols(symbol: KtCallableSymbol): Collection<KtCallableSymbol> {
         require(symbol is KtFirSymbol<*>)
         if (symbol.origin != KtSymbolOrigin.INTERSECTION_OVERRIDE) return emptyList()