mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-26 11:47:31 +00:00
6262b84eee
New features: * proper lazy evaluation of || and && * ?: ternary operator * executable is considerably smaller (8K on i386) because lex and yacc are no longer used Differences from dash: * arith_t instead of intmax_t * imaxdiv() not used * unset or null variables default to 0 * let/exp builtin (undocumented, will probably be removed later) Obtained from: dash
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*-
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* Copyright (c) 2007
|
|
* Herbert Xu <herbert@gondor.apana.org.au>. 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#define ARITH_ASS 1
|
|
|
|
#define ARITH_OR 2
|
|
#define ARITH_AND 3
|
|
#define ARITH_BAD 4
|
|
#define ARITH_NUM 5
|
|
#define ARITH_VAR 6
|
|
#define ARITH_NOT 7
|
|
|
|
#define ARITH_BINOP_MIN 8
|
|
#define ARITH_LE 8
|
|
#define ARITH_GE 9
|
|
#define ARITH_LT 10
|
|
#define ARITH_GT 11
|
|
#define ARITH_EQ 12
|
|
#define ARITH_REM 13
|
|
#define ARITH_BAND 14
|
|
#define ARITH_LSHIFT 15
|
|
#define ARITH_RSHIFT 16
|
|
#define ARITH_MUL 17
|
|
#define ARITH_ADD 18
|
|
#define ARITH_BOR 19
|
|
#define ARITH_SUB 20
|
|
#define ARITH_BXOR 21
|
|
#define ARITH_DIV 22
|
|
#define ARITH_NE 23
|
|
#define ARITH_BINOP_MAX 24
|
|
|
|
#define ARITH_ASS_MIN 24
|
|
#define ARITH_REMASS 24
|
|
#define ARITH_BANDASS 25
|
|
#define ARITH_LSHIFTASS 26
|
|
#define ARITH_RSHIFTASS 27
|
|
#define ARITH_MULASS 28
|
|
#define ARITH_ADDASS 29
|
|
#define ARITH_BORASS 30
|
|
#define ARITH_SUBASS 31
|
|
#define ARITH_BXORASS 32
|
|
#define ARITH_DIVASS 33
|
|
#define ARITH_ASS_MAX 34
|
|
|
|
#define ARITH_LPAREN 34
|
|
#define ARITH_RPAREN 35
|
|
#define ARITH_BNOT 36
|
|
#define ARITH_QMARK 37
|
|
#define ARITH_COLON 38
|
|
|
|
union yystype {
|
|
arith_t val;
|
|
char *name;
|
|
};
|
|
|
|
extern union yystype yylval;
|
|
|
|
int yylex(void);
|