BIND

[hcoop/domtool2.git] / src / main.sml

diff --git a/src/main.sml b/src/main.sml
index 7f7d2c0..59a76d5 100644 (file)
--- a/src/main.sml
+++ b/src/main.sml
@@ -14,7 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

-*)
+ *)

 
 (* Main interface *)
 
 
 (* Main interface *)
 


@@ -22,38 +22,113 @@ structure Main :> MAIN = struct
 
 open Ast Print
 
 
 open Ast Print
 

+structure SM = StringMap
+

 val dmy = ErrorMsg.dummyLoc
 
 val dmy = ErrorMsg.dummyLoc
 

-val tInit = (TAction ((CRoot, dmy),
-                     StringMap.empty,
-                     StringMap.empty),
-            dmy)
+val defaultT : record ref = ref SM.empty
+val defaultV : exp SM.map ref = ref SM.empty
+
+fun registerDefault (name, t, v) =
+    case SM.find (!defaultT, name) of
+       NONE => (defaultT := SM.insert (!defaultT, name, t);
+                defaultV := SM.insert (!defaultV, name, v))
+      | SOME _ => raise Fail "Duplicate default environment variable"
+
+fun tInit () = (TAction ((CRoot, dmy),
+                        !defaultT,
+                        StringMap.empty),
+               dmy)
+
+

            
            

-fun check fname =
+fun check' G fname =

     let
     let

+       (*val _ = print ("Check " ^ fname ^ "\n")*)

        val prog = Parse.parse fname
     in
        if !ErrorMsg.anyErrors then
        val prog = Parse.parse fname
     in
        if !ErrorMsg.anyErrors then

-           ()
+           G
+       else
+           Tycheck.checkFile G (tInit ()) prog
+    end
+
+fun basis () =
+    let
+       val dir = Posix.FileSys.opendir Config.libRoot
+
+       fun loop files =
+           case Posix.FileSys.readdir dir of
+               NONE => (Posix.FileSys.closedir dir;
+                        files)
+             | SOME fname =>
+               if String.isSuffix ".dtl" fname then
+                   loop (OS.Path.joinDirFile {dir = Config.libRoot,
+                                              file = fname}
+                         :: files)
+               else
+                   loop files
+
+       val files = loop []
+       val files = Order.order files
+    in
+       if !ErrorMsg.anyErrors then
+           Env.empty
+       else
+           foldl (fn (fname, G) => check' G fname) Env.empty files
+    end
+
+fun check fname =
+    let
+       val _ = ErrorMsg.reset ()
+
+       val b = basis ()
+    in
+       if !ErrorMsg.anyErrors then
+           (b, NONE)

        else
            let
        else
            let

-               val G' = Tycheck.checkFile Env.empty tInit prog
+               val prog = Parse.parse fname

            in
                if !ErrorMsg.anyErrors then
            in
                if !ErrorMsg.anyErrors then

-                   ()
+                   (Env.empty, NONE)

                else
                else

-                   case prog of
-                       (_, SOME body) =>
-                       let
-                           val body' = Reduce.reduceExp G' body
-                       in
-                           printd (PD.hovBox (PD.PPS.Rel 0,
-                                              [PD.string "Result:",
-                                               PD.space 1,
-                                               p_exp body']))
-                       end
-                     | _ => ()
+                   let
+                       val G' = Tycheck.checkFile b (tInit ()) prog
+                   in
+                       (G', #3 prog)
+                   end

            end
     end
 
            end
     end
 

+fun reduce fname =
+    let
+       val (G, body) = check fname
+    in
+       if !ErrorMsg.anyErrors then
+           NONE
+       else
+           case body of
+               SOME body =>
+               let
+                   val body' = Reduce.reduceExp G body
+               in
+                   (*printd (PD.hovBox (PD.PPS.Rel 0,
+                                        [PD.string "Result:",
+                                         PD.space 1,
+                                         p_exp body']))*)
+                   SOME body'
+               end
+             | _ => NONE
+    end
+
+fun eval fname =
+    case reduce fname of
+       (SOME body') =>
+       if !ErrorMsg.anyErrors then
+           ()
+       else
+           Eval.exec (!defaultV) body'
+      | NONE => ()
+

 end
 end