%{ /* $NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $ */ /*- * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Kenneth Almquist. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #ifndef lint #if 0 static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95"; #else __RCSID("$NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $"); #endif #endif /* not lint */ #include #include "arith.h" #include "error.h" #include "expand.h" #include "var.h" extern int yylval; extern char *arith_buf, *arith_startbuf; #undef YY_INPUT #define YY_INPUT(buf,result,max) \ result = (*buf = *arith_buf++) ? 1 : YY_NULL; #define YY_NO_UNPUT %} %option noyywrap %% [ \t\n] { ; } 0x[0-9a-fA-F]+ { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); } 0[0-7]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); } [1-9][0-9]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); } [A-Za-z_][A-Za-z_0-9]* { char *v = lookupvar(yytext); if (v) { yylval = strtol(v, &v, 0); if (*v == 0) return ARITH_NUM; } error("arith: syntax error: \"%s\"", arith_startbuf); } "(" { return(ARITH_LPAREN); } ")" { return(ARITH_RPAREN); } "||" { return(ARITH_OR); } "&&" { return(ARITH_AND); } "|" { return(ARITH_BOR); } "^" { return(ARITH_BXOR); } "&" { return(ARITH_BAND); } "==" { return(ARITH_EQ); } "!=" { return(ARITH_NE); } ">" { return(ARITH_GT); } ">=" { return(ARITH_GE); } "<" { return(ARITH_LT); } "<=" { return(ARITH_LE); } "<<" { return(ARITH_LSHIFT); } ">>" { return(ARITH_RSHIFT); } "*" { return(ARITH_MUL); } "/" { return(ARITH_DIV); } "%" { return(ARITH_REM); } "+" { return(ARITH_ADD); } "-" { return(ARITH_SUB); } "~" { return(ARITH_BNOT); } "!" { return(ARITH_NOT); } . { error("arith: syntax error: \"%s\"", arith_startbuf); } %% void arith_lex_reset() { #ifdef YY_NEW_FILE YY_NEW_FILE; #endif }