[LL FIR] LLFirResolveTarget: more accurate toString

^KT-61296

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/api/targets/LLFirClassWithSpecificMembersResolveTarget.kt

@@ -25,6 +25,5 @@ class LLFirClassWithSpecificMembersResolveTarget(
         members.forEach(action)
     }
 
-    override fun toStringForTarget(): String =
+    override fun toStringAdditionalSuffix(): String = members.joinToString(prefix = "[", postfix = "]") { it.symbol.toString() }
-        members.joinToString(prefix = "[", postfix = "]") { it.symbol.toString() }
 }

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/api/targets/LLFirResolveTarget.kt

@@ -65,11 +65,14 @@ sealed class LLFirResolveTarget(
             }
 
             add(toStringForTarget())
+            toStringAdditionalSuffix()?.let(this::add)
         }.joinTo(this, separator = " -> ")
         append(")")
     }
 
-    protected open fun toStringForTarget(): String = when (target) {
+    protected open fun toStringAdditionalSuffix(): String? = null
+
+    private fun toStringForTarget(): String = when (target) {
         is FirConstructor -> "constructor"
         is FirClassLikeDeclaration -> target.symbol.name.asString()
         is FirCallableDeclaration -> target.symbol.name.asString()

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/api/targets/LLFirWholeClassResolveTarget.kt

@@ -37,5 +37,5 @@ class LLFirWholeClassResolveTarget(
         }
     }
 
-    override fun toStringForTarget(): String = "*"
+    override fun toStringAdditionalSuffix(): String = "*"
 }

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/api/targets/LLFirWholeFileResolveTarget.kt

@@ -35,5 +35,5 @@ class LLFirWholeFileResolveTarget(firFile: FirFile) : LLFirResolveTarget(firFile
         }
     }
 
-    override fun toStringForTarget(): String = "*"
+    override fun toStringAdditionalSuffix(): String = "*"
 }