FIR: Support top-level constructors

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/impl/FirProviderImpl.kt

@@ -57,13 +57,14 @@ class FirProviderImpl(val session: FirSession) : FirProvider {
             }
 
             override fun visitCallableMemberDeclaration(callableMemberDeclaration: FirCallableMemberDeclaration) {
-                val callableId = when (containerFqName) {
-                    FqName.ROOT -> CallableId(packageName, callableMemberDeclaration.name)
-                    else -> CallableId(packageName, containerFqName, callableMemberDeclaration.name)
-                }
+                val callableId = (callableMemberDeclaration.symbol as ConeCallableSymbol).callableId
                 callableMap.merge(callableId, listOf(callableMemberDeclaration)) { a, b -> a + b }
             }
 
+            override fun visitConstructor(constructor: FirConstructor) {
+                visitCallableMemberDeclaration(constructor)
+            }
+
             override fun visitNamedFunction(namedFunction: FirNamedFunction) {
                 visitCallableMemberDeclaration(namedFunction)
             }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/scopes/impl/FirTopLevelDeclaredMemberScope.kt

@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.fir.symbols.CallableId
 import org.jetbrains.kotlin.fir.symbols.ConeFunctionSymbol
 import org.jetbrains.kotlin.fir.symbols.ConePropertySymbol
 import org.jetbrains.kotlin.fir.symbols.ConeVariableSymbol
+import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 
 class FirTopLevelDeclaredMemberScope(
@@ -24,6 +25,12 @@ class FirTopLevelDeclaredMemberScope(
     private val packageFqName = file.packageFqName
 
     override fun processFunctionsByName(name: Name, processor: (ConeFunctionSymbol) -> ProcessorAction): ProcessorAction {
+        val constructors = provider.getCallableSymbols(CallableId(packageFqName, FqName.topLevel(name), name))
+        for (symbol in constructors) {
+            if (symbol is ConeFunctionSymbol && !processor(symbol)) {
+                return STOP
+            }
+        }
         val symbols = provider.getCallableSymbols(CallableId(packageFqName, name))
         for (symbol in symbols) {
             if (symbol is ConeFunctionSymbol && !processor(symbol)) {

compiler/fir/resolve/testData/resolve/derivedClass.txt

@@ -11,5 +11,5 @@ FILE: derivedClass.kt
 
     }
     <T : R|kotlin/Any|> public final function create(x: R|T|): R|Derived<T>| {
-        return@@@create <Unresolved name: Derived>#(R|<local>/x|)
+        return@@@create R|/Derived.Derived|(R|<local>/x|)
     }

compiler/fir/resolve/testData/resolve/expresssions/invoke/explicitReceiver.txt

@@ -4,7 +4,7 @@ FILE: explicitReceiver.kt
     public final class Foo {
         public constructor(): super<R|kotlin/Any|>()
 
-        public final property x(val): R|Foo| = <Unresolved name: Foo>#()
+        public final property x(val): R|Foo| = R|/Foo.Foo|()
             public get(): R|Foo|
 
         public final operator function invoke(): R|Foo| {

compiler/fir/resolve/testData/resolve/expresssions/invoke/explicitReceiver2.txt

@@ -16,7 +16,7 @@ FILE: explicitReceiver2.kt
             return@@@invoke this#
         }
 
-        public final property x(val): R|Bar| = <Unresolved name: Bar>#()
+        public final property x(val): R|Bar| = R|/Bar.Bar|()
             public get(): R|Bar|
 
         public final function bar(): R|Foo| {

compiler/fir/resolve/testData/resolve/overrides/simpleFakeOverride.txt

@@ -15,7 +15,7 @@ FILE: simpleFakeOverride.kt
         public constructor(): super<R|A<Some>|>()
 
         public final function test(): R|kotlin/Unit| {
-            R|FakeOverride</A.foo: R|Some|>|(<Unresolved name: Some>#())
+            R|FakeOverride</A.foo: R|Some|>|(R|/Some.Some|())
         }
 
     }