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basic_nr.l revision 1.1 
      1 /*
      2  * This file is part of flex.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * Neither the name of the University nor the names of its contributors
     15  * may be used to endorse or promote products derived from this software
     16  * without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE.
     22  */
     23 
     24 /* TEST scanner.
     25    Basic non-reentrant scanner.
     26 
     27    Sample Input:
     28        # this is a comment
     29        foo = true
     30        bar = "string value"
     31        integer = 43
     32 */
     33 %{
     34 #include "config.h"
     35 %}
     36 
     37 %option prefix="test"
     38 %option nounput noyywrap noyylineno warn nodefault noinput
     39 
     40 IDENT [[:alnum:]_-]
     41 WS    [[:blank:]]
     42 %%
     43 
     44 ^{IDENT}+{WS}*={WS}*(true|false){WS}*\r?\n    { return 100;}
     45 ^{IDENT}+{WS}*={WS}*\"[^\"\n\r]*\"{WS}*\r?\n  { return 101;}
     46 ^{IDENT}+{WS}*={WS}*[[:digit:]]+{WS}*\r?\n    { return 102;}
     47 ^{WS}*#.*\r?\n     { }
     48 ^{WS}*\r?\n        { }
     49 .|\n  { fprintf(stderr,"Invalid line.\n"); exit(-1);}
     50 
     51 %%
     52 
     53 int main(void);
     54 
     55 int main ()
     56 {
     57     yyin = stdin;
     58     yyout = stdout;
     59     while( yylex() )
     60     {
     61     }
     62     printf("TEST RETURNING OK.\n");
     63     return 0;
     64 }
     65