Provide a default implementation for 'SyntheticScope'

compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/JavaSyntheticPropertiesScope.kt

@@ -92,7 +92,7 @@ interface SyntheticJavaPropertyDescriptor : PropertyDescriptor, SyntheticPropert
     }
 }
 
-class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val lookupTracker: LookupTracker) : SyntheticScope {
+class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val lookupTracker: LookupTracker) : SyntheticScope.Default() {
     private val syntheticPropertyInClass =
         storageManager.createMemoizedFunction<Pair<ClassDescriptor, Name>, SyntheticPropertyHolder> { pair ->
             syntheticPropertyInClassNotCached(pair.first, pair.second)
@@ -205,18 +205,6 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
         }
     }
 
-    override fun getSyntheticStaticFunctions(scope: ResolutionScope, name: Name, location: LookupLocation): Collection<FunctionDescriptor> =
-        emptyList()
-
-    override fun getSyntheticConstructors(scope: ResolutionScope, name: Name, location: LookupLocation): Collection<FunctionDescriptor> =
-        emptyList()
-
-    override fun getSyntheticStaticFunctions(scope: ResolutionScope): Collection<FunctionDescriptor> = emptyList()
-
-    override fun getSyntheticConstructors(scope: ResolutionScope): Collection<FunctionDescriptor> = emptyList()
-
-    override fun getSyntheticConstructor(constructor: ConstructorDescriptor): ConstructorDescriptor? = null
-
     private fun collectSyntheticPropertiesByName(
         result: SmartList<PropertyDescriptor>?,
         type: TypeConstructor,

compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/SamAdapterFunctionsScope.kt

@@ -59,7 +59,7 @@ class SamAdapterFunctionsScope(
     private val samResolver: SamConversionResolver,
     private val deprecationResolver: DeprecationResolver,
     private val lookupTracker: LookupTracker
-) : SyntheticScope {
+) : SyntheticScope.Default() {
     private val samViaSyntheticScopeDisabled = languageVersionSettings.supportsFeature(LanguageFeature.NewInference)
 
     private val extensionForFunction =
@@ -150,10 +150,6 @@ class SamAdapterFunctionsScope(
         }
     }
 
-    override fun getSyntheticExtensionProperties(receiverTypes: Collection<KotlinType>, name: Name, location: LookupLocation): Collection<PropertyDescriptor> = emptyList()
-
-    override fun getSyntheticExtensionProperties(receiverTypes: Collection<KotlinType>): Collection<PropertyDescriptor> = emptyList()
-
     override fun getSyntheticStaticFunctions(scope: ResolutionScope, name: Name, location: LookupLocation): Collection<FunctionDescriptor> {
         if (samViaSyntheticScopeDisabled) return emptyList()
 

core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/SyntheticScopes.kt

@@ -36,6 +36,60 @@ interface SyntheticScope {
     fun getSyntheticConstructors(scope: ResolutionScope): Collection<FunctionDescriptor>
 
     fun getSyntheticConstructor(constructor: ConstructorDescriptor): ConstructorDescriptor?
+
+    open class Default : SyntheticScope {
+        override fun getSyntheticExtensionProperties(
+            receiverTypes: Collection<KotlinType>,
+            name: Name,
+            location: LookupLocation
+        ): Collection<PropertyDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticMemberFunctions(
+            receiverTypes: Collection<KotlinType>,
+            name: Name,
+            location: LookupLocation
+        ): Collection<FunctionDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticStaticFunctions(
+            scope: ResolutionScope,
+            name: Name,
+            location: LookupLocation
+        ): Collection<FunctionDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticConstructors(
+            scope: ResolutionScope,
+            name: Name,
+            location: LookupLocation
+        ): Collection<FunctionDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticExtensionProperties(receiverTypes: Collection<KotlinType>): Collection<PropertyDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticMemberFunctions(receiverTypes: Collection<KotlinType>): Collection<FunctionDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticStaticFunctions(scope: ResolutionScope): Collection<FunctionDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticConstructors(scope: ResolutionScope): Collection<FunctionDescriptor> {
+            return emptyList()
+        }
+
+        override fun getSyntheticConstructor(constructor: ConstructorDescriptor): ConstructorDescriptor? {
+            return null
+        }
+    }
 }
 
 interface SyntheticScopes {