X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_disambiguation%2FcicTextualLexer2.ml;h=5127f21383b222e6bac568c79f73e777f6282582;hb=8aaf525856e25bcd8f355e505fd00f45c62bc18f;hp=71574dbb1ce081e24da3455739cedba56f70ba76;hpb=b5036f4cab9d3942af90e63a877414522bc738ce;p=helm.git

diff --git a/helm/ocaml/cic_disambiguation/cicTextualLexer2.ml b/helm/ocaml/cic_disambiguation/cicTextualLexer2.ml
index 71574dbb1..5127f2138 100644
--- a/helm/ocaml/cic_disambiguation/cicTextualLexer2.ml
+++ b/helm/ocaml/cic_disambiguation/cicTextualLexer2.ml
@@ -30,35 +30,58 @@ exception Not_an_extended_ident
 let regexp alpha = [ 'a' - 'z' 'A' - 'Z' ]
 let regexp digit = [ '0' - '9' ]
 let regexp blank = [ ' ' '\t' '\n' ]
+let regexp paren = [ '(' '[' '{' ')' ']' '}' ]
+let regexp implicit = '?'
+let regexp placeholder = '%'
+let regexp symbol_char =
+  [^ 'a' - 'z' 'A' - 'Z' '0' - '9'
+     ' ' '\t' '\n'
+     '\\' '(' '[' '{' ')' ']' '}' '?'
+  ]
+
+let regexp comment_char = [^'*'] | '*'[^')']
+let regexp note = "(*" ([^'*'] | "**") comment_char* "*)"
+
+let regexp commentbegin = "(**" blank
+let regexp commentend = "*)"
 
 let regexp blanks = blank+
 let regexp num = digit+
 let regexp tex_token = '\\' alpha+
-let regexp symbol = [^ 'a' - 'z' 'A' - 'Z' '0' - '9' ' ' '\t' '\n' ]
+let regexp symbol = symbol_char
 let regexp ident_cont = alpha | num | '_' | '\''
 let regexp ident_cont' = ident_cont | tex_token
 let regexp ident = (alpha ident_cont*) | ('_' ident_cont+)
 let regexp ident' = ((alpha | tex_token) ident_cont'*) | ('_' ident_cont'+)
-let regexp paren = [ '(' '[' '{' ')' ']' '}' ]
-let regexp implicit = '?'
-let regexp meta = '?' num
+let regexp meta = implicit num
 let regexp qstring = '"' [^ '"']* '"'
 let regexp uri =
-  (*      schema      *) (*     path     *) (*  ext   *) (*    xpointer     *)
-  ("cic:/" | "theory:/") ident ('/' ident)* ('.' ident)+ ('#' num ('/' num)*)?
+  ("cic:/" | "theory:/")              (* schema *)
+  ident ('/' ident)*                  (* path *)
+  ('.' ident)+                        (* ext *)
+  ("#xpointer(" num ('/' num)+ ")")?    (* xpointer *)
 (* let regexp catchall = .* *)
 
 let keywords = Hashtbl.create 17
 let _ =
   List.iter (fun keyword -> Hashtbl.add keywords keyword ("", keyword))
-    [ "Prop"; "Type"; "Set"; "let"; "rec"; "using"; "match"; "with" ]
+    [ "Prop"; "Type"; "Set"; "let"; "Let"; "rec"; "using"; "match"; "with";
+      "in"; "and" ]
 
 let error lexbuf msg =
   raise (Error (Ulexing.lexeme_start lexbuf, Ulexing.lexeme_end lexbuf, msg))
 let error_at_end lexbuf msg =
   raise (Error (Ulexing.lexeme_end lexbuf, Ulexing.lexeme_end lexbuf, msg))
 
-let return lexbuf token = (token, Ulexing.loc lexbuf)
+let return lexbuf token =
+  let flocation_begin =
+    { Lexing.pos_fname = ""; Lexing.pos_lnum = -1; Lexing.pos_bol = -1;
+      Lexing.pos_cnum = Ulexing.lexeme_start lexbuf }
+  in
+  let flocation_end =
+    { flocation_begin with Lexing.pos_cnum = Ulexing.lexeme_end lexbuf }
+  in
+  (token, (flocation_begin, flocation_end))
 
 (*
 let parse_ext_ident ident =
@@ -89,8 +112,11 @@ let rec token' = lexer
 
 and token = lexer
 *)
-let rec token = lexer
-  | blanks -> token lexbuf
+
+let remove_quotes s = String.sub s 1 (String.length s - 2)
+
+let rec token comments = lexer
+  | blanks -> token comments lexbuf
   | uri -> return lexbuf ("URI", Ulexing.utf8_lexeme lexbuf)
   | ident ->
       let lexeme = Ulexing.utf8_lexeme lexbuf in
@@ -101,35 +127,44 @@ let rec token = lexer
   | paren -> return lexbuf ("PAREN", Ulexing.utf8_lexeme lexbuf)
   | meta -> return lexbuf ("META", Ulexing.utf8_lexeme lexbuf)
   | implicit -> return lexbuf ("IMPLICIT", Ulexing.utf8_lexeme lexbuf)
+  | placeholder -> return lexbuf ("PLACEHOLDER", Ulexing.utf8_lexeme lexbuf)
   | qstring ->
-      let lexeme = Ulexing.utf8_lexeme lexbuf in
-      let s = String.sub lexeme 1 (String.length lexeme - 2) in
-      return lexbuf ("QSTRING", s)
+      return lexbuf ("QSTRING", remove_quotes (Ulexing.utf8_lexeme lexbuf))
   | symbol -> return lexbuf ("SYMBOL", Ulexing.utf8_lexeme lexbuf)
   | tex_token ->
       let macro =
         Ulexing.utf8_sub_lexeme lexbuf 1 (Ulexing.lexeme_length lexbuf - 1)
       in
       (try
-        return lexbuf ("SYMBOL", CicTextualParser2Macro.expand macro)
-      with CicTextualParser2Macro.Macro_not_found _ ->
+        return lexbuf ("SYMBOL", Utf8Macro.expand macro)
+      with Utf8Macro.Macro_not_found _ ->
         return lexbuf ("SYMBOL", Ulexing.utf8_lexeme lexbuf))
+  | note -> 
+      (*if comments then*)
+        let comment =
+          Ulexing.utf8_sub_lexeme lexbuf 2 (Ulexing.lexeme_length lexbuf - 4)
+        in
+        return lexbuf ("NOTE", comment)
+      (*else
+        token comments lexbuf*)
+  | commentbegin -> return lexbuf ("BEGINCOMMENT","")
+  | commentend -> return lexbuf ("ENDCOMMENT","")
   | eof -> return lexbuf ("EOI", "")
   | _ -> error lexbuf "Invalid character"
 
-let tok_func stream =
+let tok_func comments stream =
   let lexbuf = Ulexing.from_utf8_stream stream in
-  Token.make_stream_and_location
+  Token.make_stream_and_flocation
     (fun () ->
       try
-	token lexbuf
+	token comments lexbuf
       with
       | Ulexing.Error -> error_at_end lexbuf "Unexpected character"
       | Ulexing.InvalidCodepoint i -> error_at_end lexbuf "Invalid code point")
 
-let cic_lexer =
-  { 
-    Token.tok_func = tok_func;
+let cic_lexer ?(comments = false) () =
+  {
+    Token.tok_func = tok_func comments;
     Token.tok_using = (fun _ -> ());
     Token.tok_removing = (fun _ -> ()); 
     Token.tok_match = Token.default_match;