| 1 | %option noyywrap
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| 2 | %{
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| 3 | /* $NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $ */
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| 4 |
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| 5 | /*-
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| 6 | * Copyright (c) 1993
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| 7 | * The Regents of the University of California. All rights reserved.
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| 8 | *
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| 9 | * This code is derived from software contributed to Berkeley by
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| 10 | * Kenneth Almquist.
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| 11 | *
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| 12 | * Redistribution and use in source and binary forms, with or without
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| 13 | * modification, are permitted provided that the following conditions
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| 14 | * are met:
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| 15 | * 1. Redistributions of source code must retain the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer.
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| 17 | * 2. Redistributions in binary form must reproduce the above copyright
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| 18 | * notice, this list of conditions and the following disclaimer in the
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| 19 | * documentation and/or other materials provided with the distribution.
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| 20 | * 3. Neither the name of the University nor the names of its contributors
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| 21 | * may be used to endorse or promote products derived from this software
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| 22 | * without specific prior written permission.
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| 23 | *
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| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 34 | * SUCH DAMAGE.
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| 35 | */
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| 36 |
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| 37 | #include <sys/cdefs.h>
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| 38 | #ifndef lint
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| 39 | #if 0
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| 40 | static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
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| 41 | #else
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| 42 | __RCSID("$NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $");
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| 43 | #endif
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| 44 | #endif /* not lint */
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| 45 |
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| 46 | #include <unistd.h>
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| 47 | #include "arith.h"
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| 48 | #include "error.h"
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| 49 | #include "expand.h"
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| 50 | #include "var.h"
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| 51 |
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| 52 | extern int yylval;
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| 53 | extern char *arith_buf, *arith_startbuf;
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| 54 | #undef YY_INPUT
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| 55 | #define YY_INPUT(buf,result,max) \
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| 56 | result = (*buf = *arith_buf++) ? 1 : YY_NULL;
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| 57 | #define YY_NO_UNPUT
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| 58 | %}
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| 59 |
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| 60 | %%
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| 61 | [ \t\n] { ; }
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| 62 | 0x[0-9a-fA-F]+ { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
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| 63 | 0[0-7]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
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| 64 | [1-9][0-9]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
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| 65 | [A-Za-z_][A-Za-z_0-9]* { char *v = lookupvar(yytext);
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| 66 | if (v) {
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| 67 | yylval = strtol(v, &v, 0);
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| 68 | if (*v == 0)
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| 69 | return ARITH_NUM;
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| 70 | }
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| 71 | error("arith: syntax error: \"%s\"", arith_startbuf);
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| 72 | }
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| 73 | "(" { return(ARITH_LPAREN); }
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| 74 | ")" { return(ARITH_RPAREN); }
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| 75 | "||" { return(ARITH_OR); }
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| 76 | "&&" { return(ARITH_AND); }
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| 77 | "|" { return(ARITH_BOR); }
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| 78 | "^" { return(ARITH_BXOR); }
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| 79 | "&" { return(ARITH_BAND); }
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| 80 | "==" { return(ARITH_EQ); }
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| 81 | "!=" { return(ARITH_NE); }
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| 82 | ">" { return(ARITH_GT); }
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| 83 | ">=" { return(ARITH_GE); }
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| 84 | "<" { return(ARITH_LT); }
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| 85 | "<=" { return(ARITH_LE); }
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| 86 | "<<" { return(ARITH_LSHIFT); }
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| 87 | ">>" { return(ARITH_RSHIFT); }
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| 88 | "*" { return(ARITH_MUL); }
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| 89 | "/" { return(ARITH_DIV); }
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| 90 | "%" { return(ARITH_REM); }
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| 91 | "+" { return(ARITH_ADD); }
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| 92 | "-" { return(ARITH_SUB); }
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| 93 | "~" { return(ARITH_BNOT); }
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| 94 | "!" { return(ARITH_NOT); }
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| 95 | . { error("arith: syntax error: \"%s\"", arith_startbuf); }
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| 96 | %%
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| 97 |
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| 98 | void
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| 99 | arith_lex_reset() {
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| 100 | #ifdef YY_NEW_FILE
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| 101 | YY_NEW_FILE;
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| 102 | #endif
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| 103 | }
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