(*  Title:      Pure/ML/ml_compiler.ML

    Author:     Makarius

Runtime compilation -- generic version.

*)

signature ML_COMPILER =

sig

  val exn_position: exn -> Position.T

  val exn_messages: exn -> (serial * string) list

  val exn_message: exn -> string

  val eval: bool -> Position.T -> ML_Lex.token list -> unit

end

structure ML_Compiler: ML_COMPILER =

struct

fun exn_position _ = Position.none;

val exn_messages = Runtime.exn_messages exn_position;

val exn_message = Runtime.exn_message exn_position;

fun eval verbose pos toks =

  let

    val line = the_default 1 (Position.line_of pos);

    val file = the_default "ML" (Position.file_of pos);

    val text = ML_Lex.flatten toks;

  in Secure.use_text ML_Env.local_context (line, file) verbose text end;

end;