GetTypeName.swift

struct RelativePointer<Pointee> {
    var offset: Int32

    mutating func advanced() -> UnsafeMutablePointer<Pointee> {
        return withUnsafePointer(to: &self) { [offset] pointer in
            let rawPointer = UnsafeRawPointer(pointer)
            let advanced = rawPointer.advanced(by: Int(offset))
            let pointer = advanced.assumingMemoryBound(to: Pointee.self)
            return UnsafeMutablePointer(mutating: pointer)
        }
    }
}
struct StructTypeMetadata {
    let kind: Int8
    var typeDescriptor: UnsafeMutablePointer<StructTypeDescriptor>
}


struct StructTypeDescriptor {
    let flags: Int32
    let parentContextDescriptor: Int32
    var name: RelativePointer<CChar>
}


struct Animal {}

let type: Any.Type = Animal.self
let metadata = unsafeBitCast(type, to: UnsafePointer<StructTypeMetadata>.self).pointee
let namePointer = metadata.typeDescriptor.pointee.name.advanced()
print(String(cString: namePointer))