src/Pure/RAW/ROOT_smlnj.ML

+(*  Title:      Pure/RAW/ROOT_smlnj.ML
+
+Compatibility file for Standard ML of New Jersey.
+*)
+
+val io_buffer_size = 4096;
+use "RAW/proper_int.ML";
+
+exception Interrupt;
+fun reraise exn = raise exn;
+
+fun exit rc = Posix.Process.exit (Word8.fromInt rc);
+fun quit () = exit 0;
+
+use "RAW/overloading_smlnj.ML";
+use "RAW/exn.ML";
+use "RAW/single_assignment.ML";
+use "RAW/universal.ML";
+use "RAW/thread_dummy.ML";
+use "RAW/multithreading.ML";
+use "RAW/ml_stack_dummy.ML";
+use "RAW/ml_pretty.ML";
+use "RAW/ml_name_space.ML";
+structure PolyML = struct end;
+use "RAW/pp_dummy.ML";
+use "RAW/use_context.ML";
+use "RAW/ml_positions.ML";
+
+
+val seconds = Time.fromReal;
+
+(*low-level pointer equality*)
+CM.autoload "$smlnj/init/init.cmi";
+val pointer_eq = InlineT.ptreql;
+
+
+(* restore old-style character / string functions *)
+
+val ord = mk_int o SML90.ord;
+val chr = SML90.chr o dest_int;
+val raw_explode = SML90.explode;
+val implode = SML90.implode;
+
+
+(* New Jersey ML parameters *)
+
+val _ =
+ (Control.Print.printLength := 1000;
+  Control.Print.printDepth := 350;
+  Control.Print.stringDepth := 250;
+  Control.Print.signatures := 2;
+  Control.MC.matchRedundantError := false);
+
+
+(* Poly/ML emulation *)
+
+(*limit the printing depth -- divided by 2 for comparibility with Poly/ML*)
+local
+  val depth = ref (10: int);
+in
+  fun get_default_print_depth () = ! depth;
+  fun default_print_depth n =
+   (depth := n;
+    Control.Print.printDepth := dest_int n div 2;
+    Control.Print.printLength := dest_int n);
+  val _ = default_print_depth 10;
+end;
+
+fun ml_make_string (_: string) = "(fn _ => \"?\")";
+
+
+(*prompts*)
+fun ml_prompts p1 p2 =
+  (Control.primaryPrompt := p1; Control.secondaryPrompt := p2);
+
+(*dummy implementation*)
+structure ML_Profiling =
+struct
+  fun profile_time (_: (int * string) list -> unit) f x = f x;
+  fun profile_time_thread (_: (int * string) list -> unit) f x = f x;
+  fun profile_allocations (_: (int * string) list -> unit) f x = f x;
+end;
+
+(*dummy implementation*)
+fun print_exception_trace (_: exn -> string) (_: string -> unit) f = f ();
+
+
+(* ML command execution *)
+
+fun use_text ({tune_source, print, error, ...}: use_context)
+    {line, file, verbose, debug = _: bool} text =
+  let
+    val ref out_orig = Control.Print.out;
+
+    val out_buffer = ref ([]: string list);
+    val out = {say = (fn s => out_buffer := s :: ! out_buffer), flush = (fn () => ())};
+    fun output () =
+      let val str = implode (rev (! out_buffer))
+      in String.substring (str, 0, Int.max (0, size str - 1)) end;
+  in
+    Control.Print.out := out;
+    Backend.Interact.useStream (TextIO.openString (tune_source (ml_positions line file text)))
+      handle exn =>
+        (Control.Print.out := out_orig;
+          error ((if file = "" then "" else "Error in " ^ file ^ "\n") ^ output ()); raise exn);
+    Control.Print.out := out_orig;
+    if verbose then print (output ()) else ()
+  end;
+
+fun use_file context {verbose, debug} file =
+  let
+    val instream = TextIO.openIn file;
+    val text = Exn.release (Exn.capture TextIO.inputAll instream before TextIO.closeIn instream);
+  in use_text context {line = 1, file = file, verbose = verbose, debug = debug} text end;
+
+
+(* toplevel pretty printing *)
+
+fun ml_pprint pps =
+  let
+    fun str "" = ()
+      | str s = PrettyPrint.string pps s;
+    fun pprint (ML_Pretty.Block ((bg, en), consistent, ind, prts)) =
+         (str bg;
+          (if consistent then PrettyPrint.openHVBox else PrettyPrint.openHOVBox) pps
+            (PrettyPrint.Rel (dest_int ind));
+          List.app pprint prts; PrettyPrint.closeBox pps;
+          str en)
+      | pprint (ML_Pretty.String (s, _)) = str s
+      | pprint (ML_Pretty.Break (false, width, offset)) =
+          PrettyPrint.break pps {nsp = dest_int width, offset = dest_int offset}
+      | pprint (ML_Pretty.Break (true, _, _)) = PrettyPrint.newline pps;
+  in pprint end;
+
+fun toplevel_pp context path pp =
+  use_text context {line = 1, file = "pp", verbose = false, debug = false}
+    ("CompilerPPTable.install_pp [" ^ String.concatWith "," (map (fn s => "\"" ^ s ^ "\"")  path) ^
+      "] (fn pps => ml_pprint pps o Pretty.to_ML o (" ^ pp ^ "))");
+
+
+
+(** interrupts **)
+
+local
+
+fun change_signal new_handler f x =
+  let
+    val old_handler = Signals.setHandler (Signals.sigINT, new_handler);
+    val result = Exn.capture (f old_handler) x;
+    val _ = Signals.setHandler (Signals.sigINT, old_handler);
+  in Exn.release result end;
+
+in
+
+fun interruptible (f: 'a -> 'b) x =
+  let
+    val result = ref (Exn.interrupt_exn: 'b Exn.result);
+    val old_handler = Signals.inqHandler Signals.sigINT;
+  in
+    SMLofNJ.Cont.callcc (fn cont =>
+      (Signals.setHandler (Signals.sigINT, Signals.HANDLER (fn _ => cont));
+        result := Exn.capture f x));
+    Signals.setHandler (Signals.sigINT, old_handler);
+    Exn.release (! result)
+  end;
+
+fun uninterruptible f =
+  change_signal Signals.IGNORE
+    (fn old_handler => f (fn g => change_signal old_handler (fn _ => g)));
+
+end;
+
+
+use "RAW/unsynchronized.ML";
+use "RAW/ml_debugger.ML";
+
+
+(* ML system operations *)
+
+fun ml_platform_path (s: string) = s;
+fun ml_standard_path (s: string) = s;
+
+use "RAW/ml_system.ML";
+
+structure ML_System =
+struct
+
+open ML_System;
+
+fun save_state name =
+  if SMLofNJ.exportML name then ()
+  else OS.FileSys.rename {old = name ^ "." ^ platform, new = name};
+
+end;