nsz Git - libfirm/blob - ir/libcore/lc_config_lexer.l

   1
   2 %option prefix="_lc_opt_"
   3
   4 %{
   5
   6 /*
   7   libcore: library for basic data structures and algorithms.
   8   Copyright (C) 2005  IPD Goos, Universit"at Karlsruhe, Germany
   9
  10   This library is free software; you can redistribute it and/or
  11   modify it under the terms of the GNU Lesser General Public
  12   License as published by the Free Software Foundation; either
  13   version 2.1 of the License, or (at your option) any later version.
  14
  15   This library is distributed in the hope that it will be useful,
  16   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public
  21   License along with this library; if not, write to the Free Software
  22   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23 */
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #include <stdio.h>
  29
  30 #include "lc_parser_t.h"
  31 #include "lc_config_parser.h"
  32
  33 #define YY_NO_UNISTD_H
  34
  35 static int _lc_opt_wrap(void);
  36
  37 %}
  38
  39 num             [0-9]+
  40 hexnum          0x[0-9a-fA-F]+
  41 idcharsbegin    [a-zA-Z$_]
  42 idchars         ({idcharsbegin}|[0-9])
  43 ident           {idcharsbegin}{idchars}*
  44 ws              [\t ]*
  45 nl              \n
  46
  47 %x LINE_COMMENT
  48 %x BIG_COMMENT
  49 %x DAT
  50 %x DAT_CONT
  51 %x STR
  52
  53
  54 %%
  55
  56 "/*"                { BEGIN(BIG_COMMENT); }
  57 <BIG_COMMENT>"*/"   { BEGIN(INITIAL); }
  58 <BIG_COMMENT>\n     PMANGLE(linenr)++;
  59 <BIG_COMMENT>.      ;
  60
  61 ("#"|"//")          { BEGIN(LINE_COMMENT); }
  62 <LINE_COMMENT>\n    { BEGIN(INITIAL); PMANGLE(linenr)++; }
  63 <LINE_COMMENT>.     ;
  64
  65
  66 <INITIAL>[=:]{ws}   { BEGIN(DAT); }
  67 <DAT>\"             { BEGIN(STR); }
  68 <DAT>\\             { BEGIN(DAT_CONT); }
  69 <DAT>.              { _lc_opt_add_to_data_char(PMANGLE(text)[0]); }
  70 <DAT>\n             {
  71                                                 BEGIN(INITIAL);
  72                                                 PMANGLE(linenr)++;
  73                                                 _lc_opt_add_to_data_char('\0');
  74                                                 return DATA;
  75                                         }
  76 <DAT_CONT>\n        { BEGIN(DAT); PMANGLE(linenr)++; }
  77 <DAT_CONT>.         ;
  78
  79
  80 <STR>\"             {
  81                                                 BEGIN(INITIAL);
  82                                                 _lc_opt_add_to_data_char('\0');
  83                                                 return DATA;
  84                                         }
  85
  86 <STR>\\n            _lc_opt_add_to_data_char('\n');
  87 <STR>\\r            _lc_opt_add_to_data_char('\r');
  88 <STR>\\t            _lc_opt_add_to_data_char('\t');
  89 <STR>\\b            _lc_opt_add_to_data_char('\b');
  90 <STR>\\f            _lc_opt_add_to_data_char('\f');
  91 <STR>\\.            _lc_opt_add_to_data_char(yytext[1]);
  92 <STR>[^\"]          _lc_opt_add_to_data_char(yytext[0]);
  93
  94 {ident}                         {
  95                                                 PMANGLE(lval).text.str = PMANGLE(text);
  96                                                 PMANGLE(lval).text.len = PMANGLE(leng);
  97                                                 return IDENT;
  98                                         }
  99 [/.]                { return SEP; }
 100
 101 {ws}                ;
 102 {nl}                PMANGLE(linenr)++;
 103
 104 .                   return yytext[0];
 105
 106 %%
 107
 108 static int _lc_opt_wrap(void)
 109 {
 110         /* avoid warning */
 111         (void) yyunput;
 112         (void) input;
 113         return 1;
 114 }