KT-64931: add convertion of kotlin top-lvl functions into swift static functions

Merge-request: KT-MR-13878
Merged-by: Artem Olkov <artem.olkov@jetbrains.com>

native/swift/sir-analysis-api/src/org/jetbrains/kotlin/sir/analysisapi/transformers/NamedFunction.kt

@@ -7,7 +7,7 @@ package org.jetbrains.kotlin.sir.analysisapi.transformers
 
 import org.jetbrains.kotlin.analysis.api.analyze
 import org.jetbrains.kotlin.analysis.api.symbols.KtValueParameterSymbol
-import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.KtNamedFunction
 import org.jetbrains.kotlin.sir.*
 import org.jetbrains.kotlin.sir.builder.buildForeignFunction
@@ -24,8 +24,8 @@ private fun KtValueParameterSymbol.toSirParam(): SirKotlinOrigin.Parameter = AAP
 private class AAFunction(
     private val originalFunction: KtNamedFunction
 ) : SirKotlinOrigin.Function {
-    override val fqName: List<String>
-        get() = originalFunction.fqName?.pathSegments()?.toListString() ?: emptyList()
+    override val fqName: FqName
+        get() = originalFunction.fqName ?: FqName.fromSegments(emptyList())
 
     override val parameters: List<SirKotlinOrigin.Parameter>
         get() = analyze(originalFunction) {
@@ -48,5 +48,3 @@ private data class AAParameter(
 private data class AAKotlinType(
     override val name: String
 ) : SirKotlinOrigin.Type
-
-private fun List<Name>.toListString() = map { it.asString() }

native/swift/sir-analysis-api/tests/org/jetbrains/kotlin/sir/analysisapi/AbstractKotlinSirContextTest.kt

@@ -45,7 +45,7 @@ abstract class AbstractKotlinSirContextTestBase : AbstractAnalysisApiBasedTest()
                 .filterIsInstance<SirForeignFunction>()
                 .forEach {
                     val function = it.origin as SirKotlinOrigin.Function
-                    appendLine("${function.fqName}")
+                    appendLine("${function.path}")
                 }
         }