--- /dev/null
+(* Copyright (C) 2000, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://cs.unibo.it/helm/.
+ *)
+
+{
+ open TexCicTextualParser;;
+ module L = Lexing;;
+ module U = UriManager;;
+
+ let indtyuri_of_uri uri =
+ let index_sharp = String.index uri '#' in
+ let index_num = index_sharp + 3 in
+ try
+ (UriManager.uri_of_string (String.sub uri 0 index_sharp),
+ int_of_string(String.sub uri index_num (String.length uri - index_num)) - 1
+ )
+ with
+ Failure msg ->
+ raise (CicTextualParser0.LexerFailure "Not an inductive URI")
+ ;;
+
+ let indconuri_of_uri uri =
+ let index_sharp = String.index uri '#' in
+ let index_div = String.rindex uri '/' in
+ let index_con = index_div + 1 in
+ try
+ (UriManager.uri_of_string (String.sub uri 0 index_sharp),
+ int_of_string
+ (String.sub uri (index_sharp + 3) (index_div - index_sharp - 3)) - 1,
+ int_of_string
+ (String.sub uri index_con (String.length uri - index_con))
+ )
+ with
+ Failure msg ->
+ raise (CicTextualParser0.LexerFailure "Not a constructor URI")
+ ;;
+
+ (* TeX unquoting for "_" *)
+ let unquote str =
+ Str.global_replace (Str.regexp "\\\\_") "_" str
+ ;;
+}
+let dollar = '$'
+let num = ['1'-'9']['0'-'9']* | '0'
+let letter = ['A'-'Z' 'a'-'z']
+let alfa = letter | ['_' ''' '-'] | "\\_"
+let ident = letter (alfa | num)*
+let baseuri = '/'(ident '/')* ident '.'
+let conuri = baseuri "con"
+let varuri = baseuri "var"
+let indtyuri = baseuri "ind#1/" num
+let indconuri = baseuri "ind#1/" num "/" num
+let blanks = [' ' '\t' '\n' '~' '{' '}'] | "\\;" | "\\rm"
+rule token =
+ parse
+ blanks { token lexbuf } (* skip blanks *)
+ | "\\Case" { CASE }
+ | "\\Fix" { FIX }
+ | "\\CoFix" { COFIX }
+ | "\\Set" { SET }
+ | "\\Prop" { PROP }
+ | "\\Type" { TYPE }
+ | ident { ID (unquote (L.lexeme lexbuf)) }
+ | conuri { CONURI
+ (U.uri_of_string ("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+ | varuri { VARURI
+ (U.uri_of_string ("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+ | indtyuri { INDTYURI
+ (indtyuri_of_uri ("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+ | indconuri { INDCONURI
+ (indconuri_of_uri("cic:" ^ (unquote (L.lexeme lexbuf)))) }
+ | num { NUM (int_of_string (L.lexeme lexbuf)) }
+ | '?' num { let lexeme = L.lexeme lexbuf in
+ META
+ (int_of_string
+ (String.sub lexeme 1 (String.length lexeme - 1))) }
+ | ":>" { CAST }
+ | ":=" { LETIN }
+ | '?' { IMPLICIT }
+ | '(' { LPAREN }
+ | ')' { RPAREN }
+ | "\\[" { LBRACKET }
+ | "\\]" { RBRACKET }
+ | "\\{" { LCURLY }
+ | "\\}" { RCURLY }
+ | ';' { SEMICOLON }
+ | "\\lambda" { LAMBDA }
+ | "\\pi" { PROD }
+ | "\\forall" { PROD }
+ | ':' { COLON }
+ | '.' { DOT }
+ | "\\to" { ARROW }
+ | '_' { NONE }
+ | dollar { DOLLAR }
+ | eof { EOF }
+ (* Arithmetical operators *)
+ | '+' { PLUS }
+ | '-' { MINUS }
+ | '*' { TIMES }
+ | '=' { EQ }
+{}