author | wenzelm |
Sat, 21 Mar 2009 19:58:45 +0100 | |
changeset 30626 | 248de8dd839e |
parent 30619 | 0226c07352db |
child 30672 | beaadd5af500 |
permissions | -rw-r--r-- |
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(* Title: Pure/ML-Systems/smlnj.ML |
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Compatibility file for Standard ML of New Jersey 110 or later. |
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*) |
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exception Interrupt; |
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use "ML-Systems/proper_int.ML"; |
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use "ML-Systems/overloading_smlnj.ML"; |
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ML-Systems/exn.ML, ML-Systems/multithreading_dummy.ML;
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use "ML-Systems/exn.ML"; |
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use "ML-Systems/universal.ML"; |
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use "ML-Systems/thread_dummy.ML"; |
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use "ML-Systems/multithreading.ML"; |
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use "ML-Systems/system_shell.ML"; |
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use "ML-Systems/ml_name_space.ML"; |
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use "ML-Systems/ml_pretty.ML"; |
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(*low-level pointer equality*) |
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CM.autoload "$smlnj/init/init.cmi"; |
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val pointer_eq = InlineT.ptreql; |
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(* restore old-style character / string functions *) |
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val ord = mk_int o SML90.ord; |
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val chr = SML90.chr o dest_int; |
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val explode = SML90.explode; |
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val implode = SML90.implode; |
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(* New Jersey ML parameters *) |
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val _ = |
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(Control.Print.printLength := 1000; |
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Control.Print.printDepth := 350; |
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Control.Print.stringDepth := 250; |
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Control.Print.signatures := 2; |
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Control.MC.matchRedundantError := false); |
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(* Poly/ML emulation *) |
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val exit = exit o dest_int; |
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fun quit () = exit 0; |
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(*limit the printing depth -- divided by 2 for comparibility with Poly/ML*) |
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local |
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val depth = ref (10: int); |
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in |
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fun get_print_depth () = ! depth; |
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fun print_depth n = |
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(depth := n; |
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Control.Print.printDepth := dest_int n div 2; |
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Control.Print.printLength := dest_int n); |
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end; |
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(* compiler-independent timing functions *) |
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fun start_timing () = |
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let |
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val timer = Timer.startCPUTimer (); |
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val time = Timer.checkCPUTimer timer; |
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in (timer, time) end; |
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fun end_timing (timer, {sys, usr}) = |
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let |
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open Time; (*...for Time.toString, Time.+ and Time.- *) |
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val {sys = sys2, usr = usr2} = Timer.checkCPUTimer timer; |
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val user = usr2 - usr; |
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val all = user + sys2 - sys; |
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val message = "User " ^ toString user ^ " All "^ toString all ^ " secs" handle Time => ""; |
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in {message = message, user = user, all = all} end; |
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fun check_timer timer = |
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let |
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val {sys, usr} = Timer.checkCPUTimer timer; |
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val gc = Timer.checkGCTime timer; (* FIXME already included in usr? *) |
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in (sys, usr, gc) end; |
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(*prompts*) |
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fun ml_prompts p1 p2 = |
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(Control.primaryPrompt := p1; Control.secondaryPrompt := p2); |
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(*dummy implementation*) |
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fun profile (n: int) f x = f x; |
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(*dummy implementation*) |
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fun exception_trace f = f (); |
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(*dummy implementation*) |
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fun print x = x; |
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(*dummy implementation*) |
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fun makestring x = "dummy string for SML New Jersey"; |
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(* ML command execution *) |
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fun use_text (tune: string -> string) _ _ (line: int, name) (print, err) verbose txt = |
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let |
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val ref out_orig = Control.Print.out; |
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val out_buffer = ref ([]: string list); |
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val out = {say = (fn s => out_buffer := s :: ! out_buffer), flush = (fn () => ())}; |
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fun output () = |
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let val str = implode (rev (! out_buffer)) |
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in String.substring (str, 0, Int.max (0, size str - 1)) end; |
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in |
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Control.Print.out := out; |
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Backend.Interact.useStream (TextIO.openString (tune txt)) handle exn => |
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(Control.Print.out := out_orig; |
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err ((if name = "" then "" else "Error in " ^ name ^ "\n") ^ output ()); raise exn); |
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Control.Print.out := out_orig; |
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if verbose then print (output ()) else () |
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end; |
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fun use_file tune str_of_pos name_space output verbose name = |
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let |
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val instream = TextIO.openIn name; |
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val txt = Exn.release (Exn.capture TextIO.inputAll instream before TextIO.closeIn instream); |
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in use_text tune str_of_pos name_space (1, name) output verbose txt end; |
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fun forget_structure name = |
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use_text (fn x => x) (fn _ => "") () (1, "ML") (TextIO.print, fn s => raise Fail s) false |
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("structure " ^ name ^ " = struct end"); |
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(* toplevel pretty printing *) |
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fun ml_pprint pps = |
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let |
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fun str "" = () |
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| str s = PrettyPrint.string pps s; |
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fun pprint (ML_Pretty.Block ((bg, en), prts, ind)) = |
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(str bg; PrettyPrint.openHOVBox pps (PrettyPrint.Rel (dest_int ind)); |
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List.app pprint prts; PrettyPrint.closeBox pps; str en) |
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| pprint (ML_Pretty.String (s, _)) = str s |
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| pprint (ML_Pretty.Break (false, wd)) = PrettyPrint.break pps {nsp = dest_int wd, offset = 0} |
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| pprint (ML_Pretty.Break (true, _)) = PrettyPrint.newline pps; |
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in pprint end; |
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fun toplevel_pp tune str_of_pos output path pp = |
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use_text tune str_of_pos ML_NameSpace.global (1, "pp") output false |
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("CompilerPPTable.install_pp [" ^ String.concatWith "," (map (fn s => "\"" ^ s ^ "\"") path) ^ |
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"] (fn pps => ml_pprint pps o Pretty.to_ML o (" ^ pp ^ "))"); |
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(** interrupts **) |
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local |
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|
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157 |
fun change_signal new_handler f x = |
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let |
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val old_handler = Signals.setHandler (Signals.sigINT, new_handler); |
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val result = Exn.capture (f old_handler) x; |
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val _ = Signals.setHandler (Signals.sigINT, old_handler); |
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in Exn.release result end; |
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|
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in |
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|
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fun interruptible (f: 'a -> 'b) x = |
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let |
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168 |
val result = ref (Exn.Exn Interrupt: 'b Exn.result); |
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val old_handler = Signals.inqHandler Signals.sigINT; |
5816 | 170 |
in |
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SMLofNJ.Cont.callcc (fn cont => |
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(Signals.setHandler (Signals.sigINT, Signals.HANDLER (fn _ => cont)); |
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result := Exn.capture f x)); |
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Signals.setHandler (Signals.sigINT, old_handler); |
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Exn.release (! result) |
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end; |
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|
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fun uninterruptible f = |
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179 |
change_signal Signals.IGNORE |
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(fn old_handler => f (fn g => change_signal old_handler (fn _ => g))); |
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|
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182 |
end; |
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183 |
|
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|
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185 |
(* basis library fixes *) |
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186 |
|
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187 |
structure TextIO = |
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188 |
struct |
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189 |
open TextIO; |
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190 |
fun inputLine is = TextIO.inputLine is |
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191 |
handle IO.Io _ => raise Interrupt; |
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192 |
end; |
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|
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194 |
|
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|
4403 | 196 |
(** OS related **) |
197 |
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198 |
(* current directory *) |
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199 |
|
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200 |
val cd = OS.FileSys.chDir; |
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201 |
val pwd = OS.FileSys.getDir; |
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|
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203 |
|
4403 | 204 |
(* system command execution *) |
205 |
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26220 | 206 |
val system_out = (fn (output, rc) => (output, mk_int rc)) o system_out; |
7855 | 207 |
|
4403 | 208 |
|
17824 | 209 |
(*Convert a process ID to a decimal string (chiefly for tracing)*) |
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210 |
fun process_id pid = |
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|
211 |
Word.fmt StringCvt.DEC (Word.fromLargeWord (Posix.Process.pidToWord (Posix.ProcEnv.getpid ()))); |
17824 | 212 |
|
213 |
||
4403 | 214 |
(* getenv *) |
215 |
||
216 |
fun getenv var = |
|
217 |
(case OS.Process.getEnv var of |
|
218 |
NONE => "" |
|
219 |
| SOME txt => txt); |