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 /* A reentrant scanner. 25 This file will not compile under flex version <= 2.5.4. 26 Sample Input: 27 # this is a comment 28 foo = true 29 bar = "string value" 30 integer = 43 31 */ 32 %{ 33 #include "config.h" 34 %} 35 36 %option prefix="test" outfile="scanner.c" 37 %option nounput noyywrap noyylineno warn nodefault 38 %option reentrant 39 %option noansi-definitions noansi-prototypes 40 41 IDENT [[:alnum:]_-] 42 WS [[:blank:]] 43 %% 44 45 ^{IDENT}+{WS}*={WS}*(true|false){WS}*\r?\n { return 100;} 46 ^{IDENT}+{WS}*={WS}*\"[^\"\n\r]*\"{WS}*\r?\n { return 101;} 47 ^{IDENT}+{WS}*={WS}*[[:digit:]]+{WS}*\r?\n { return 102;} 48 ^{WS}*#.*\r?\n { } 49 ^{WS}*\r?\n { } 50 .|\n { fprintf(stderr,"Invalid line.\n"); exit(-1);} 51 52 %% 53 54 int main(void); 55 56 int main () 57 { 58 yyscan_t lexer; 59 yylex_init( &lexer ); 60 yyset_out ( stdout,lexer); 61 yyset_in ( stdin, lexer); 62 while( yylex(lexer) ) 63 { 64 } 65 yylex_destroy( lexer ); 66 printf("TEST RETURNING OK.\n"); 67 return 0; 68 } 69 70