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/build.gradle.kts

@@ -9,6 +9,8 @@ description = "Swift Intermediate Representation"
 dependencies {
     compileOnly(kotlinStdlib())
 
+    api(project(":core:compiler.common"))
+
     if (kotlinBuildProperties.isInIdeaSync) {
         compileOnly(project("tree-generator")) // Provided, so that IDEA can recognize references to this module in KDoc.
     }

native/swift/sir/gen/org/jetbrains/kotlin/sir/SirFunction.kt

@@ -18,6 +18,7 @@ abstract class SirFunction : SirElementBase(), SirCallable {
     abstract override val origin: SirOrigin
     abstract override val visibility: SirVisibility
     abstract override var parent: SirDeclarationParent
+    abstract val isStatic: Boolean
     abstract val name: String
     abstract val parameters: List<SirParameter>
     abstract val returnType: SirType

native/swift/sir/gen/org/jetbrains/kotlin/sir/builder/SirFunctionBuilder.kt

@@ -18,6 +18,7 @@ import org.jetbrains.kotlin.sir.impl.SirFunctionImpl
 class SirFunctionBuilder {
     var origin: SirOrigin = SirOrigin.Unknown
     var visibility: SirVisibility = SirVisibility.PUBLIC
+    var isStatic: Boolean by kotlin.properties.Delegates.notNull<Boolean>()
     lateinit var name: String
     val parameters: MutableList<SirParameter> = mutableListOf()
     lateinit var returnType: SirType
@@ -27,6 +28,7 @@ class SirFunctionBuilder {
         return SirFunctionImpl(
             origin,
             visibility,
+            isStatic,
             name,
             parameters,
             returnType,
@@ -52,6 +54,7 @@ inline fun buildFunctionCopy(original: SirFunction, init: SirFunctionBuilder.()
     val copyBuilder = SirFunctionBuilder()
     copyBuilder.origin = original.origin
     copyBuilder.visibility = original.visibility
+    copyBuilder.isStatic = original.isStatic
     copyBuilder.name = original.name
     copyBuilder.parameters.addAll(original.parameters)
     copyBuilder.returnType = original.returnType

native/swift/sir/gen/org/jetbrains/kotlin/sir/impl/SirFunctionImpl.kt

@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.sir.visitors.SirVisitor
 internal class SirFunctionImpl(
     override val origin: SirOrigin,
     override val visibility: SirVisibility,
+    override val isStatic: Boolean,
     override val name: String,
     override val parameters: MutableList<SirParameter>,
     override val returnType: SirType,

native/swift/sir/src/org/jetbrains/kotlin/sir/SirKotlinOrigin.kt

@@ -5,11 +5,13 @@
 
 package org.jetbrains.kotlin.sir
 
+import org.jetbrains.kotlin.name.FqName
+
 sealed interface SirKotlinOrigin : SirOrigin.Foreign {
-    val fqName: List<String>
+    val fqName: FqName
 
     override val path: List<String>
-        get() = fqName
+        get() = fqName.pathSegments().map { it.asString() }
 
     interface Function : SirKotlinOrigin {
         val parameters: List<Parameter>
@@ -24,4 +26,4 @@ sealed interface SirKotlinOrigin : SirOrigin.Foreign {
     interface Type {
         val name: String
     }
-}
+}

native/swift/sir/tests/org/jetbrains/kotlin/sir/mock/KotlinEntity.kt

@@ -5,10 +5,11 @@
 
 package org.jetbrains.kotlin.sir.mock
 
+import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.sir.SirKotlinOrigin
 
 data class MockFunction(
-    override val fqName: List<String>,
+    override val fqName: FqName,
     override val parameters: List<SirKotlinOrigin.Parameter>,
     override val returnType: SirKotlinOrigin.Type,
 ) : SirKotlinOrigin.Function

native/swift/sir/tree-generator/src/org/jetbrains/kotlin/sir/tree/generator/SwiftIrTree.kt

@@ -7,6 +7,7 @@
 
 package org.jetbrains.kotlin.sir.tree.generator
 
+import org.jetbrains.kotlin.generators.tree.StandardTypes.boolean
 import org.jetbrains.kotlin.generators.tree.StandardTypes.string
 import org.jetbrains.kotlin.sir.tree.generator.config.AbstractSwiftIrTreeBuilder
 import org.jetbrains.kotlin.sir.tree.generator.model.Element
@@ -81,6 +82,7 @@ object SwiftIrTree : AbstractSwiftIrTreeBuilder() {
         customParentInVisitor = callable
         parent(callable)
 
+        +field("isStatic", boolean) // todo: KT-65046 Method|function distinction in SIR
         +field("name", string)
         +listField("parameters", parameterType)
         +field("returnType", typeType)