FIR tower levels: inline processElementsByName[AndStoreResult]

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevelHandler.kt

@@ -53,17 +53,18 @@ internal class TowerLevelHandler {
 
         when (info.callKind) {
             CallKind.VariableAccess -> {
-                towerLevel.processProperties(info.name, processor)
+                processResult += towerLevel.processPropertiesByName(info.name, processor)
 
-                if (!collector.isSuccess()) {
-                    towerLevel.processObjectsAsVariables(info.name, processor)
+                if (!collector.isSuccess() && towerLevel is ScopeTowerLevel && towerLevel.extensionReceiver == null) {
+                    processResult += towerLevel.processObjectsByName(info.name, processor)
                 }
             }
             CallKind.Function -> {
-                towerLevel.processFunctions(info.name, processor)
+                processResult += towerLevel.processFunctionsByName(info.name, processor)
             }
             CallKind.CallableReference -> {
-                towerLevel.processFunctionsAndProperties(info.name, processor)
+                processResult += towerLevel.processFunctionsByName(info.name, processor)
+                processResult += towerLevel.processPropertiesByName(info.name, processor)
             }
             else -> {
                 throw AssertionError("Unsupported call kind in tower resolver: ${info.callKind}")
@@ -71,46 +72,6 @@ internal class TowerLevelHandler {
         }
         return processResult
     }
-
-    private fun TowerScopeLevel.processProperties(
-        name: Name,
-        processor: TowerScopeLevel.TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>
-    ) {
-        processElementsByNameAndStoreResult(TowerScopeLevel.Token.Properties, name, processor)
-    }
-
-    private fun TowerScopeLevel.processFunctions(
-        name: Name,
-        processor: TowerScopeLevel.TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>
-    ) {
-        processElementsByNameAndStoreResult(TowerScopeLevel.Token.Functions, name, processor)
-    }
-
-    private fun TowerScopeLevel.processFunctionsAndProperties(
-        name: Name, processor: TowerScopeLevel.TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>
-    ) {
-        processFunctions(name, processor)
-        processProperties(name, processor)
-    }
-
-    private fun TowerScopeLevel.processObjectsAsVariables(
-        name: Name, processor: TowerScopeLevel.TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>
-    ) {
-        // Skipping objects when extension receiver is bound to the level
-        if (this is ScopeTowerLevel && this.extensionReceiver != null) return
-
-        processElementsByNameAndStoreResult(TowerScopeLevel.Token.Objects, name, processor)
-    }
-
-    private fun <T : AbstractFirBasedSymbol<*>> TowerScopeLevel.processElementsByNameAndStoreResult(
-        token: TowerScopeLevel.Token<T>,
-        name: Name,
-        processor: TowerScopeLevel.TowerScopeLevelProcessor<T>
-    ): ProcessorAction {
-        return processElementsByName(token, name, processor).also {
-            processResult += it
-        }
-    }
 }
 
 private class TowerScopeLevelProcessor(

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevels.kt

@@ -31,13 +31,13 @@ interface TowerScopeLevel {
         object Objects : Token<AbstractFirBasedSymbol<*>>()
     }
 
-    fun <T : AbstractFirBasedSymbol<*>> processElementsByName(
-        token: Token<T>,
-        name: Name,
-        processor: TowerScopeLevelProcessor<T>
-    ): ProcessorAction
+    fun processFunctionsByName(name: Name, processor: TowerScopeLevelProcessor<FirFunctionSymbol<*>>): ProcessorAction
 
-    interface TowerScopeLevelProcessor<T : AbstractFirBasedSymbol<*>> {
+    fun processPropertiesByName(name: Name, processor: TowerScopeLevelProcessor<FirVariableSymbol<*>>): ProcessorAction
+
+    fun processObjectsByName(name: Name, processor: TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>): ProcessorAction
+
+    interface TowerScopeLevelProcessor<in T : AbstractFirBasedSymbol<*>> {
         fun consumeCandidate(
             symbol: T,
             dispatchReceiverValue: ReceiverValue?,
@@ -115,38 +115,47 @@ class MemberScopeTowerLevel(
         return if (empty) ProcessorAction.NONE else ProcessorAction.NEXT
     }
 
-    override fun <T : AbstractFirBasedSymbol<*>> processElementsByName(
-        token: TowerScopeLevel.Token<T>,
+    override fun processFunctionsByName(
         name: Name,
-        processor: TowerScopeLevel.TowerScopeLevelProcessor<T>
+        processor: TowerScopeLevel.TowerScopeLevelProcessor<FirFunctionSymbol<*>>
     ): ProcessorAction {
-        val isInvoke = name == OperatorNameConventions.INVOKE && token == TowerScopeLevel.Token.Functions
+        val isInvoke = name == OperatorNameConventions.INVOKE
         if (implicitExtensionInvokeMode && !isInvoke) {
             return ProcessorAction.NEXT
         }
-        return when (token) {
-            is TowerScopeLevel.Token.Properties -> processMembers(processor) { consumer ->
-                this.processPropertiesByName(name) {
+        return processMembers(processor) { consumer ->
+            this.processFunctionsAndConstructorsByName(
+                name, session, bodyResolveComponents,
+                includeInnerConstructors = true,
+                processor = {
                     // WARNING, DO NOT CAST FUNCTIONAL TYPE ITSELF
                     @Suppress("UNCHECKED_CAST")
-                    consumer(it as T)
+                    consumer(it as FirFunctionSymbol<*>)
                 }
-            }
-            TowerScopeLevel.Token.Functions -> processMembers(processor) { consumer ->
-                this.processFunctionsAndConstructorsByName(
-                    name, session, bodyResolveComponents,
-                    includeInnerConstructors = true,
-                    processor = {
-                        // WARNING, DO NOT CAST FUNCTIONAL TYPE ITSELF
-                        @Suppress("UNCHECKED_CAST")
-                        consumer(it as T)
-                    }
-                )
-            }
-            TowerScopeLevel.Token.Objects -> ProcessorAction.NEXT
+            )
         }
     }
 
+    override fun processPropertiesByName(
+        name: Name,
+        processor: TowerScopeLevel.TowerScopeLevelProcessor<FirVariableSymbol<*>>
+    ): ProcessorAction {
+        return processMembers(processor) { consumer ->
+            this.processPropertiesByName(name) {
+                // WARNING, DO NOT CAST FUNCTIONAL TYPE ITSELF
+                @Suppress("UNCHECKED_CAST")
+                consumer(it)
+            }
+        }
+    }
+
+    override fun processObjectsByName(
+        name: Name,
+        processor: TowerScopeLevel.TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>
+    ): ProcessorAction {
+        return ProcessorAction.NEXT
+    }
+
     override fun replaceReceiverValue(receiverValue: ReceiverValue): SessionBasedTowerLevel {
         return MemberScopeTowerLevel(
             session, bodyResolveComponents, receiverValue, extensionReceiver, implicitExtensionInvokeMode, scopeSession
@@ -222,35 +231,47 @@ class ScopeTowerLevel(
         }
     }
 
-    override fun <T : AbstractFirBasedSymbol<*>> processElementsByName(
-        token: TowerScopeLevel.Token<T>,
+    override fun processFunctionsByName(
         name: Name,
-        processor: TowerScopeLevel.TowerScopeLevelProcessor<T>
+        processor: TowerScopeLevel.TowerScopeLevelProcessor<FirFunctionSymbol<*>>
     ): ProcessorAction {
         var empty = true
-        @Suppress("UNCHECKED_CAST")
-        when (token) {
-            TowerScopeLevel.Token.Properties -> scope.processPropertiesByName(name) { candidate ->
-                empty = false
-                consumeCallableCandidate(candidate, processor)
-            }
-            TowerScopeLevel.Token.Functions -> scope.processFunctionsAndConstructorsByName(
-                name,
-                session,
-                bodyResolveComponents,
-                includeInnerConstructors = includeInnerConstructors
-            ) { candidate ->
-                empty = false
-                consumeCallableCandidate(candidate, processor)
-            }
-            TowerScopeLevel.Token.Objects -> scope.processClassifiersByName(name) {
-                empty = false
-                processor.consumeCandidate(
-                    it as T, dispatchReceiverValue = null,
-                    extensionReceiverValue = null,
-                    scope = scope
-                )
-            }
+        scope.processFunctionsAndConstructorsByName(
+            name,
+            session,
+            bodyResolveComponents,
+            includeInnerConstructors = includeInnerConstructors
+        ) { candidate ->
+            empty = false
+            consumeCallableCandidate(candidate, processor)
+        }
+        return if (empty) ProcessorAction.NONE else ProcessorAction.NEXT
+    }
+
+    override fun processPropertiesByName(
+        name: Name,
+        processor: TowerScopeLevel.TowerScopeLevelProcessor<FirVariableSymbol<*>>
+    ): ProcessorAction {
+        var empty = true
+        scope.processPropertiesByName(name) { candidate ->
+            empty = false
+            consumeCallableCandidate(candidate, processor)
+        }
+        return if (empty) ProcessorAction.NONE else ProcessorAction.NEXT
+    }
+
+    override fun processObjectsByName(
+        name: Name,
+        processor: TowerScopeLevel.TowerScopeLevelProcessor<AbstractFirBasedSymbol<*>>
+    ): ProcessorAction {
+        var empty = true
+        scope.processClassifiersByName(name) {
+            empty = false
+            processor.consumeCandidate(
+                it, dispatchReceiverValue = null,
+                extensionReceiverValue = null,
+                scope = scope
+            )
         }
         return if (empty) ProcessorAction.NONE else ProcessorAction.NEXT
     }