parsing_cocci/lexer_script.mll

   1 (*
   2  * Copyright 2010, INRIA, University of Copenhagen
   3  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   4  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   5  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   6  * This file is part of Coccinelle.
   7  *
   8  * Coccinelle is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, according to version 2 of the License.
  11  *
  12  * Coccinelle is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  * The authors reserve the right to distribute this or future versions of
  21  * Coccinelle under other licenses.
  22  *)
  23
  24
  25 {
  26 open Parser_cocci_menhir
  27 module D = Data
  28 module Ast = Ast_cocci
  29 exception Lexical of string
  30 let tok = Lexing.lexeme
  31 let inc_line _ = Lexer_cocci.line := !Lexer_cocci.line + 1
  32 }
  33 (* ---------------------------------------------------------------------- *)
  34 (* tokens *)
  35
  36 let oct = ['0'-'7']
  37 let hex = ['0'-'9' 'a'-'f' 'A'-'F']
  38
  39 let myrule = [^'\'''"''@''/''\n''\r''\011''\012']+
  40
  41 rule token = parse
  42   | myrule { TScriptData (tok lexbuf) }
  43   | ['\n' '\r' '\011' '\012'] { inc_line(); TScriptData (tok lexbuf) }
  44   | "@@" { TArobArob }
  45   | "@"  { TArob }
  46   | "/"  { TScriptData (tok lexbuf) }
  47   | "//" [^ '\n']* { token lexbuf } (* skip SmPL comments *)
  48   | '"'  { TScriptData (Printf.sprintf "\"%s\"" (string lexbuf)) }
  49   | "'"  { TScriptData (Printf.sprintf "'%s'" (cstring lexbuf)) }
  50   | eof  { EOF }
  51   | _ { raise (Lexical ("unrecognised symbol, in token rule:"^tok lexbuf)) }
  52
  53 (* These are C strings.  Perhaps they require some adjustment. *)
  54 and string  = parse
  55   | '"'                 { "" }
  56   | (_ as x)            { (String.make 1 x) ^ string lexbuf }
  57
  58 and cstring  = parse
  59   | "'"                 { "" }
  60   | (_ as x)            { (String.make 1 x) ^ cstring lexbuf }