(* Title: Pure/ML/ml_compiler.ML
Author: Makarius
Runtime compilation and evaluation -- generic version.
*)
signature ML_COMPILER =
sig
type flags = {SML: bool, exchange: bool, redirect: bool, verbose: bool}
val flags: flags
val verbose: bool -> flags -> flags
val eval: flags -> Position.T -> ML_Lex.token list -> unit
end
structure ML_Compiler: ML_COMPILER =
struct
type flags = {SML: bool, exchange: bool, redirect: bool, verbose: bool};
val flags = {SML = false, exchange = false, redirect = false, verbose = false};
fun verbose b (flags: flags) =
{SML = #SML flags, exchange = #exchange flags, redirect = #redirect flags, verbose = b};
fun eval (flags: flags) pos toks =
let
val _ = if #SML flags then error ("Standard ML is unsupported on " ^ ML_System.name) else ();
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 flags) text end;
end;