FIR: support varargs in resolve

compiler/fir/cones/src/org/jetbrains/kotlin/fir/symbols/StandardClassIds.kt

@@ -13,6 +13,7 @@ object StandardClassIds {
 
     private val BASE_KOTLIN_PACKAGE = FqName("kotlin")
     private fun String.baseId() = ClassId(BASE_KOTLIN_PACKAGE, Name.identifier(this))
+    private fun Name.arrayId() = ClassId(Array.packageFqName, Name.identifier(identifier + Array.shortClassName.identifier))
 
     val Nothing = "Nothing".baseId()
     val Unit = "Unit".baseId()
@@ -25,14 +26,29 @@ object StandardClassIds {
     val Char = "Char".baseId()
     val Byte = "Byte".baseId()
     val Short = "Short".baseId()
-
     val Int = "Int".baseId()
     val Long = "Long".baseId()
-
-    val String = "String".baseId()
-
     val Float = "Float".baseId()
     val Double = "Double".baseId()
 
+    val String = "String".baseId()
+
     fun byName(name: String) = name.baseId()
+
+    val primitiveArrayTypeByElementType: Map<ClassId, ClassId> = mutableMapOf<ClassId, ClassId>().apply {
+        fun addPrimitive(id: ClassId) {
+            put(id, id.shortClassName.arrayId())
+        }
+
+        addPrimitive(Boolean)
+        addPrimitive(Char)
+        addPrimitive(Byte)
+        addPrimitive(Short)
+        addPrimitive(Int)
+        addPrimitive(Long)
+        addPrimitive(Float)
+        addPrimitive(Double)
+    }
+
+    val elementTypeByPrimitiveArrayType = primitiveArrayTypeByElementType.map { (k, v) -> v to k }.toMap()
 }