FIR: add & use hasExplicitParameterList to anonymous functions

#KT-49134 Fixed

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/declarations/FirAnonymousFunction.kt

@@ -45,6 +45,7 @@ abstract class FirAnonymousFunction : FirFunction(), FirTypeParametersOwner {
     abstract val invocationKind: EventOccurrencesRange?
     abstract val inlineStatus: InlineStatus
     abstract val isLambda: Boolean
+    abstract val hasExplicitParameterList: Boolean
     abstract override val typeParameters: List<FirTypeParameter>
     abstract val typeRef: FirTypeRef
 

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/declarations/builder/FirAnonymousFunctionBuilder.kt

@@ -59,6 +59,7 @@ class FirAnonymousFunctionBuilder : FirFunctionBuilder, FirAnnotationContainerBu
     var invocationKind: EventOccurrencesRange? = null
     var inlineStatus: InlineStatus = InlineStatus.Unknown
     var isLambda: Boolean by kotlin.properties.Delegates.notNull<Boolean>()
+    var hasExplicitParameterList: Boolean by kotlin.properties.Delegates.notNull<Boolean>()
     val typeParameters: MutableList<FirTypeParameter> = mutableListOf()
     var typeRef: FirTypeRef = FirImplicitTypeRefImpl(null)
 
@@ -82,6 +83,7 @@ class FirAnonymousFunctionBuilder : FirFunctionBuilder, FirAnnotationContainerBu
             invocationKind,
             inlineStatus,
             isLambda,
+            hasExplicitParameterList,
             typeParameters,
             typeRef,
         )

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/declarations/impl/FirAnonymousFunctionImpl.kt

@@ -52,6 +52,7 @@ internal class FirAnonymousFunctionImpl(
     override var invocationKind: EventOccurrencesRange?,
     override var inlineStatus: InlineStatus,
     override val isLambda: Boolean,
+    override val hasExplicitParameterList: Boolean,
     override val typeParameters: MutableList<FirTypeParameter>,
     override var typeRef: FirTypeRef,
 ) : FirAnonymousFunction() {

compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirRenderer.kt

@@ -626,6 +626,12 @@ open class FirRenderer(builder: StringBuilder, protected val mode: RenderMode =
             print(".")
         }
         print("<anonymous>")
+        if (anonymousFunction.valueParameters.isEmpty() &&
+            anonymousFunction.hasExplicitParameterList &&
+            anonymousFunction.returnTypeRef is FirImplicitTypeRef
+        ) {
+            print("(<no-parameters>)")
+        }
         anonymousFunction.valueParameters.renderParameters()
         print(": ")
         anonymousFunction.returnTypeRef.accept(this)

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/NodeConfigurator.kt

@@ -282,6 +282,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
                 isMutable = true
             }
             +booleanField("isLambda")
+            +booleanField("hasExplicitParameterList")
             +typeParameters
             +field(typeRef, withReplace = true)
         }