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op.h revision 1.12 
      1 /*	$NetBSD: op.h,v 1.12 2021/01/12 20:42:01 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1995 Jochen Pohl
      5  * All Rights Reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Jochen Pohl for
     18  *	The NetBSD Project.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <stdbool.h>
     35 
     36 /*
     37  * Various information about operators
     38  */
     39 typedef	struct {
     40 	bool	m_binary : 1;	/* binary operator */
     41 	bool	m_returns_bool : 1; /* logical operator, result is 0 or 1 */
     42 	bool	m_takes_bool : 1; /* only in strict bool mode */
     43 	bool	m_takes_only_bool : 1; /* only in strict bool mode */
     44 	bool	m_requires_integer : 1;
     45 	bool	m_requires_integer_or_complex : 1;
     46 	bool	m_requires_arith : 1;
     47 	bool	m_requires_scalar : 1;
     48 	bool	m_fold : 1;	/* operands should be folded */
     49 	bool	m_vctx : 1;	/* value context for left operand */
     50 	bool	m_tctx : 1;	/* test context for left operand */
     51 	bool	m_balance : 1;	/* operator requires balancing */
     52 	bool	m_sideeff : 1;	/* operator has side effect */
     53 	bool	m_tlansiu : 1;	/* warn if left op. is unsign. in ANSI C */
     54 	bool	m_transiu : 1;	/* warn if right op. is unsign. in ANSI C */
     55 	bool	m_possible_precedence_confusion : 1;
     56 	bool	m_comp : 1;	/* operator performs comparison */
     57 	bool	m_valid_on_enum : 1;	/* valid operation on enums */
     58 	bool	m_bad_on_enum : 1;	/* dubious operation on enums */
     59 	bool	m_eqwarn : 1;	/* warning if on operand stems from == */
     60 	const char *m_name;	/* name of op. */
     61 } mod_t;
     62 
     63 extern mod_t   modtab[];
     64 
     65 #define begin_ops() typedef enum {
     66 #define op(name, repr, \
     67 		bi, lo, tb, to, in, sc, ar, fo, va, ts, ba, se, \
     68 		lu, ru, pc, cm, ve, de, ew, ic, active) \
     69 	name,
     70 #define end_ops() } op_t;
     71 #include "ops.def"
     72 
     73 const char *getopname(op_t);
     74 void initmtab(void);
     75