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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
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2007
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* Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#define ARITH_ASS 1
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#define ARITH_OR 2
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#define ARITH_AND 3
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#define ARITH_BAD 4
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#define ARITH_NUM 5
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#define ARITH_VAR 6
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#define ARITH_NOT 7
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#define ARITH_BINOP_MIN 8
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#define ARITH_LE 8
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#define ARITH_GE 9
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#define ARITH_LT 10
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#define ARITH_GT 11
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#define ARITH_EQ 12
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#define ARITH_REM 13
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#define ARITH_BAND 14
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#define ARITH_LSHIFT 15
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#define ARITH_RSHIFT 16
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#define ARITH_MUL 17
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#define ARITH_ADD 18
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#define ARITH_BOR 19
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#define ARITH_SUB 20
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#define ARITH_BXOR 21
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#define ARITH_DIV 22
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#define ARITH_NE 23
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#define ARITH_BINOP_MAX 24
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#define ARITH_ASS_MIN 24
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#define ARITH_REMASS 24
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#define ARITH_BANDASS 25
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#define ARITH_LSHIFTASS 26
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#define ARITH_RSHIFTASS 27
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#define ARITH_MULASS 28
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#define ARITH_ADDASS 29
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#define ARITH_BORASS 30
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#define ARITH_SUBASS 31
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#define ARITH_BXORASS 32
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#define ARITH_DIVASS 33
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#define ARITH_ASS_MAX 34
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#define ARITH_LPAREN 34
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#define ARITH_RPAREN 35
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#define ARITH_BNOT 36
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#define ARITH_QMARK 37
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#define ARITH_COLON 38
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union yystype {
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arith_t val;
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char *name;
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};
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extern union yystype yylval;
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int yylex(void);
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