(* Title: Pure/ML-Systems/smlnj-1.09.ML
ID: $Id$
Author: Carsten Clasohm, TU Muenchen
Copyright 1996 TU Muenchen
Compatibility file for Standard ML of New Jersey, version 1.09.
*)
(*** Poly/ML emulation ***)
fun quit () = exit 0;
(*To limit the printing depth [divided by 2 for comparibility with Poly/ML]*)
fun print_depth n = (Compiler.Control.Print.printDepth := n div 2;
Compiler.Control.Print.printLength := n);
(*Interface for toplevel pretty printers, see also Pure/install_pp.ML*)
fun make_pp path pprint =
let
open Compiler.PrettyPrint;
fun pp pps obj =
pprint obj
(add_string pps, begin_block pps INCONSISTENT,
fn wd => add_break pps (wd, 0), fn () => add_newline pps,
fn () => end_block pps);
in
(path, pp)
end;
fun install_pp (path, pp) = Compiler.PPTable.install_pp path pp;
(*** New Jersey ML parameters ***)
(* Suppresses Garbage Collection messages; doesn't work yet *)
(*System.Runtime.gc 0;*)
val _ = (Compiler.Control.Print.printLength := 1000;
Compiler.Control.Print.printDepth := 350;
Compiler.Control.Print.stringDepth := 250;
Compiler.Control.Print.signatures := 2);
(*** Character/string functions which are compatible with 0.93 and Poly/ML ***)
fun ord s = Char.ord (String.sub(s,0));
val chr = str o Char.chr;
val explode = (map str) o String.explode;
val implode = String.concat;
(*** Timing functions ***)
(*A conditional timing function: applies f to () and, if the flag is true,
prints its runtime. *)
fun cond_timeit flag f =
if flag then
let open Time (*...for Time.toString, Time.+ and Time.- *)
val CPUtimer = Timer.startCPUTimer();
val {gc=gct1,sys=syst1,usr=usrt1} = Timer.checkCPUTimer(CPUtimer);
val result = f();
val {gc=gct2,sys=syst2,usr=usrt2} = Timer.checkCPUTimer(CPUtimer)
in print("User " ^ toString (usrt2-usrt1) ^
" GC " ^ toString (gct2-gct1) ^
" All "^ toString (syst2-syst1 + usrt2-usrt1 + gct2-gct1) ^
" secs\n")
handle Time => ();
result
end
else f();
(*** File handling ***)
(*Get time of last modification; if file doesn't exist return an empty string*)
fun file_info "" = ""
| file_info name = Time.toString (OS.FileSys.modTime name) handle _ =>"";
(*** ML command execution ***)
(*For version 109.21 and later:
val use_string = Compiler.Interact.useStream o TextIO.openString o implode;
*)
(*For versions prior to 109.21:*)
fun use_string commands =
Compiler.Interact.use_stream (open_string (implode commands));
(*** System command execution ***)
(*Execute an Unix command which doesn't take any input from stdin and
sends its output to stdout.
This could be done more easily by Unix.execute, but that function
doesn't use the PATH.*)
fun execute command =
let val tmp_name = "isa_converted.tmp"
val is = (OS.Process.system (command ^ " > " ^ tmp_name);
TextIO.openIn tmp_name);
val result = TextIO.inputAll is;
in TextIO.closeIn is;
OS.FileSys.remove tmp_name;
result
end;
(* symbol input *)
val needs_filtered_use = false;