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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:32:55 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:32:55 -0800 |
commit | dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0 (patch) | |
tree | 2ba8d1a0846d69b18f623515e8d9b5d9fe38b590 /sh/arith_lex.l | |
parent | e54eebbf1a908d65ee8cf80bab62821c05666d70 (diff) | |
download | system_core-dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0.zip system_core-dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0.tar.gz system_core-dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'sh/arith_lex.l')
-rw-r--r-- | sh/arith_lex.l | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/sh/arith_lex.l b/sh/arith_lex.l new file mode 100644 index 0000000..79116fc --- /dev/null +++ b/sh/arith_lex.l @@ -0,0 +1,103 @@ +%{ +/* $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 <sys/cdefs.h> +#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 <unistd.h> +#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 +} |