Initial import of l5c

[snipe.git] / parse / parse.sml

diff --git a/parse/parse.sml b/parse/parse.sml
index 3786421ef2388a9f3e6b9c1e1c52fa7d548651e1..a2cc2fee41e34ceddffaacd961cc4af14fd7d75b 100644 (file)
--- a/parse/parse.sml
+++ b/parse/parse.sml
@@ -1,4 +1,4 @@
-(* L4 Compiler
+(* L5 Compiler
  * Parsing
  * Author: Kaustuv Chaudhuri <kaustuv+@cs.cmu.edu>
  * Modified: Frank Pfenning <fp@cs.cmu.edu>
@@ -17,10 +17,10 @@ end
 structure Parse :> PARSE =
 struct 
 
-  structure L4LrVals = L4LrValsFn (structure Token = LrParser.Token)
-  structure L4Lex = L4LexFn (structure Tokens = L4LrVals.Tokens)
-  structure L4Parse = Join (structure ParserData = L4LrVals.ParserData
-                            structure Lex = L4Lex
+  structure L5LrVals = L5LrValsFn (structure Token = LrParser.Token)
+  structure L5Lex = L5LexFn (structure Tokens = L5LrVals.Tokens)
+  structure L5Parse = Join (structure ParserData = L5LrVals.ParserData
+                            structure Lex = L5Lex
                             structure LrParser = LrParser)
 
   (* Main parsing function *)
@@ -31,18 +31,18 @@ struct
          val _ = ParseState.setfile filename (* start at position 0 in filename *)
          fun parseerror (s, p1, p2) = ErrorMsg.error (ParseState.ext (p1,p2)) s
          val lexer = LrParser.Stream.streamify
-                         (L4Lex.makeLexer (fn _ => TextIO.input instream))
+                         (L5Lex.makeLexer (fn _ => TextIO.input instream))
          (* 0 = no error correction, 15 = reasonable lookahead for correction *)
-         val (absyn, _) = L4Parse.parse(0, lexer, parseerror, ())
+         val (absyn, _) = L5Parse.parse(0, lexer, parseerror, ())
           val _ = if !ErrorMsg.anyErrors
                  then raise ErrorMsg.Error
                  else ()
        in
          absyn
        end)
-      handle Fail s => ( ErrorMsg.error NONE ("lexer error: "^s) ;
-                        raise ErrorMsg.Error )
-          | LrParser.ParseError => raise ErrorMsg.Error (* always preceded by msg *)
+      handle (*L5Lex.LexError => ( ErrorMsg.error NONE "lexer error" ;
+                              raise ErrorMsg.Error )
+          |*) LrParser.ParseError => raise ErrorMsg.Error (* always preceded by msg *)
            | e as IO.Io _ => ( ErrorMsg.error NONE (exnMessage e);
                                raise ErrorMsg.Error )