lex/syntax.mli

   1 (***********************************************************************)
   2 (*                                                                     *)
   3 (*                           Objective Caml                            *)
   4 (*                                                                     *)
   5 (*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         *)
   6 (*                                                                     *)
   7 (*  Copyright 1996 Institut National de Recherche en Informatique et   *)
   8 (*  en Automatique.  All rights reserved.  This file is distributed    *)
   9 (*  under the terms of the Q Public License version 1.0.               *)
  10 (*                                                                     *)
  11 (***********************************************************************)
  12
  13 (* $Id$ *)
  14
  15 (* The shallow abstract syntax *)
  16
  17 type location =
  18     { start_pos: int;
  19       end_pos: int;
  20       start_line: int;
  21       start_col: int }
  22
  23 type regular_expression =
  24     Epsilon
  25   | Characters of Cset.t
  26   | Eof
  27   | Sequence of regular_expression * regular_expression
  28   | Alternative of regular_expression * regular_expression
  29   | Repetition of regular_expression
  30   | Bind of regular_expression * (string * location)
  31
  32 type ('arg,'action) entry =
  33   {name:string ;
  34    shortest : bool ;
  35    args : 'arg ;
  36    clauses : (regular_expression * 'action) list}
  37
  38 type  lexer_definition =
  39     { header: location;
  40       entrypoints: ((string list, location) entry) list;
  41       trailer: location }