72 lines
2 KiB
Text
72 lines
2 KiB
Text
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/* $NetBSD: scanner.l,v 1.1.1.1 2009/10/26 00:29:55 christos Exp $ */
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/*
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* This file is part of flex.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE.
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*/
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/* A reentrant scanner.
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This file will not compile under flex version <= 2.5.4.
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Sample Input:
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# this is a comment
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foo = true
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bar = "string value"
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integer = 43
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*/
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%{
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#include "config.h"
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%}
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%option prefix="test" outfile="scanner.c"
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%option nounput noyywrap noyylineno warn nodefault
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%option reentrant
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%option noansi-definitions noansi-prototypes
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IDENT [[:alnum:]_-]
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WS [[:blank:]]
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%%
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^{IDENT}+{WS}*={WS}*(true|false){WS}*\r?\n { return 100;}
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^{IDENT}+{WS}*={WS}*\"[^\"\n\r]*\"{WS}*\r?\n { return 101;}
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^{IDENT}+{WS}*={WS}*[[:digit:]]+{WS}*\r?\n { return 102;}
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^{WS}*#.*\r?\n { }
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^{WS}*\r?\n { }
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.|\n { fprintf(stderr,"Invalid line.\n"); exit(-1);}
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%%
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int main(void);
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int main ()
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{
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yyscan_t lexer;
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yylex_init( &lexer );
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yyset_out ( stdout,lexer);
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yyset_in ( stdin, lexer);
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while( yylex(lexer) )
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{
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}
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yylex_destroy( lexer );
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printf("TEST RETURNING OK.\n");
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return 0;
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}
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