| 1 | %option never-interactive
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| 2 | %option noyywrap
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| 3 | %option noinput
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| 4 | %option nounput
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| 5 | %option noyyget_out
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| 6 | %option noyy_push_state
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| 7 | %option noyy_pop_state
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| 8 | %option noyy_top_state
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| 9 | %option noyy_scan_buffer
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| 10 | %option noyy_scan_bytes
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| 11 | %option noyy_scan_string
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| 12 | %option noyyget_extra
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| 13 | %option noyyset_extra
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| 14 | %option noyyget_leng
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| 15 | %option noyyget_text
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| 16 | %option noyyget_lineno
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| 17 | %option noyyset_lineno
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| 18 | %option noyyget_in
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| 19 | %option noyyset_in
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| 20 | %option noyyget_out
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| 21 | %option noyyset_out
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| 22 | %option noyyget_lval
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| 23 | %option noyyset_lval
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| 24 | %option noyyget_lloc
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| 25 | %option noyyset_lloc
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| 26 | %option noyyget_debug
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| 27 | %option noyyset_debug
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| 28 | %option noyyalloc
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| 29 | %option noyyrealloc
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| 30 | %option noyyfree
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| 31 | /** @todo %option reentrant */
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| 32 | %{
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| 33 | /* $NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $ */
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| 34 |
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| 35 | /*-
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| 36 | * Copyright (c) 1993
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| 37 | * The Regents of the University of California. All rights reserved.
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| 38 | *
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| 39 | * This code is derived from software contributed to Berkeley by
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| 40 | * Kenneth Almquist.
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| 41 | *
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| 42 | * Redistribution and use in source and binary forms, with or without
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| 43 | * modification, are permitted provided that the following conditions
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| 44 | * are met:
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| 45 | * 1. Redistributions of source code must retain the above copyright
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| 46 | * notice, this list of conditions and the following disclaimer.
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| 47 | * 2. Redistributions in binary form must reproduce the above copyright
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| 48 | * notice, this list of conditions and the following disclaimer in the
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| 49 | * documentation and/or other materials provided with the distribution.
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| 50 | * 3. Neither the name of the University nor the names of its contributors
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| 51 | * may be used to endorse or promote products derived from this software
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| 52 | * without specific prior written permission.
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| 53 | *
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| 54 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 55 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 56 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 57 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 58 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 59 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 60 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 61 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 62 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 63 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 64 | * SUCH DAMAGE.
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| 65 | */
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| 66 |
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| 67 | #if 0
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| 68 | #ifndef lint
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| 69 | static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
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| 70 | #else
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| 71 | __RCSID("$NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $");
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| 72 | #endif /* not lint */
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| 73 | #endif
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| 74 |
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| 75 | #include <stdio.h>
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| 76 | #include "arith.h"
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| 77 | #include "error.h"
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| 78 | #include "expand.h"
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| 79 | #include "var.h"
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| 80 | #include "shinstance.h"
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| 81 |
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| 82 | extern int yylval;
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| 83 | extern shinstance *arith_psh;
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| 84 | extern char *arith_buf, *arith_startbuf;
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| 85 | #undef YY_INPUT
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| 86 | #define YY_INPUT(buf,result,max) \
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| 87 | result = (*buf = *arith_buf++) ? 1 : YY_NULL;
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| 88 | #define YY_NO_UNPUT
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| 89 |
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| 90 | /* Avoid unnecessary libc bits. */
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| 91 | #undef ECHO
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| 92 | #define ECHO \
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| 93 | do {} while (0)
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| 94 | #undef stdin
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| 95 | #define stdin \
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| 96 | NULL
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| 97 | #undef stdout
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| 98 | #define stdout \
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| 99 | NULL
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| 100 | #undef fprintf
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| 101 | #define fprintf(a, b, c) \
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| 102 | ((void)0)
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| 103 | #undef exit
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| 104 | #define exit(rc) \
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| 105 | do {} while (0)
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| 106 | #define YY_FATAL_ERROR(msg) \
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| 107 | error(arith_psh, "arith: fatal error: %s", msg)
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| 108 | %}
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| 109 |
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| 110 | %%
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| 111 | [ \t\n] { ; }
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| 112 | 0x[0-9a-fA-F]+ { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
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| 113 | 0[0-7]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
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| 114 | [1-9][0-9]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
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| 115 | [A-Za-z_][A-Za-z_0-9]* { char *v = lookupvar(arith_psh, yytext);
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| 116 | if (v) {
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| 117 | yylval = strtol(v, &v, 0);
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| 118 | if (*v == 0)
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| 119 | return ARITH_NUM;
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| 120 | }
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| 121 | error(arith_psh, "arith: syntax error: \"%s\"", arith_startbuf);
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| 122 | }
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| 123 | "(" { return(ARITH_LPAREN); }
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| 124 | ")" { return(ARITH_RPAREN); }
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| 125 | "||" { return(ARITH_OR); }
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| 126 | "&&" { return(ARITH_AND); }
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| 127 | "|" { return(ARITH_BOR); }
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| 128 | "^" { return(ARITH_BXOR); }
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| 129 | "&" { return(ARITH_BAND); }
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| 130 | "==" { return(ARITH_EQ); }
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| 131 | "!=" { return(ARITH_NE); }
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| 132 | ">" { return(ARITH_GT); }
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| 133 | ">=" { return(ARITH_GE); }
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| 134 | "<" { return(ARITH_LT); }
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| 135 | "<=" { return(ARITH_LE); }
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| 136 | "<<" { return(ARITH_LSHIFT); }
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| 137 | ">>" { return(ARITH_RSHIFT); }
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| 138 | "*" { return(ARITH_MUL); }
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| 139 | "/" { return(ARITH_DIV); }
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| 140 | "%" { return(ARITH_REM); }
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| 141 | "+" { return(ARITH_ADD); }
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| 142 | "-" { return(ARITH_SUB); }
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| 143 | "~" { return(ARITH_BNOT); }
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| 144 | "!" { return(ARITH_NOT); }
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| 145 | . { error(arith_psh, "arith: syntax error: \"%s\"", arith_startbuf); }
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| 146 | %%
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| 147 |
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| 148 | void
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| 149 | arith_lex_reset() {
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| 150 | #ifdef YY_NEW_FILE
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| 151 | YY_NEW_FILE;
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| 152 | #endif
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| 153 | }
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| 154 |
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| 155 | void *
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| 156 | yyalloc(yy_size_t cb)
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| 157 | {
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| 158 | return sh_malloc(NULL, cb);
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| 159 | }
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| 160 |
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| 161 | void *
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| 162 | yyrealloc(void *pv, yy_size_t cb)
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| 163 | {
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| 164 | return sh_realloc(NULL, pv, cb);
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| 165 | }
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| 166 |
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| 167 | void
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| 168 | yyfree(void *pv)
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| 169 | {
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| 170 | sh_free(NULL, pv);
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| 171 | }
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| 172 |
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