using interface{} values in C/C++ bindings

[Carl-Philip Hänsch]

Hi,

I am currently developing a JITable interpreter for a scripting language where users can define user-defined functions with the signature

func (...interface{}) interface{}

that can interoperate with the scripts. interface{} can be bool, int, string, []interface{} or another func(...interface{}) interface{} or one of many more.

Now I want to create a C/C++ library that offers additional functions with exactly this signature. My questions:

• interface{} is represented as a value (ptruint) and a type information pointer. Is there a way to somehow pass this information to C/C++?
• Does C/C++ (more specific: LLVM) have a calling convention that is ABI compatible to golang? (so I can use interface{} as a pair of parameters?)
• Is there any library code in golang that helps me to read out interface{}'s type information?
  

[Mihai Barbu]

>>yes, Is there any library code in golang that helps me to read out interface{}'s type information?

Yes, there is https://golang.org/pkg/reflect

For example: 

getType(0)

getType("hello string")

func getType(v interface{}){

t := reflect.TypeOf(v) 

fmt.Printf("type is %s", t)