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(* Open Source License                                                       *)
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(* For documentation please refer to the [Tezos_wasmer] module. *)

open Utils
open Vectors
open Api

type t = Types.Module.t Ctypes.ptr

let wat2wasm code =
  let source = Byte_vector.from_string code in
  let dest = Byte_vector.empty () in
  Functions.wat2wasm (Ctypes.addr source) (Ctypes.addr dest) ;
  dest

type format = Text | Binary

let create store format code =
  let wasm =
    match format with
    | Binary -> Byte_vector.from_string code
    | Text -> wat2wasm code
  in
  let modul = Functions.Module.new_ store (Ctypes.addr wasm) in
  Byte_vector.delete wasm ;
  check_null_ptr Error.(make_exception Instantiate_module) modul ;
  modul

let imports modul =
  let outputs = Import_type_vector.empty () in
  Functions.Module.imports modul (Ctypes.addr outputs) ;
  outputs

let exports modul =
  let outputs = Export_type_vector.empty () in
  Functions.Module.exports modul (Ctypes.addr outputs) ;
  outputs

let delete = Functions.Module.delete