mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-15 10:17:20 +00:00
52467047aa
Use recent best practices for Copyright form at the top of the license: 1. Remove all the All Rights Reserved clauses on our stuff. Where we piggybacked others, use a separate line to make things clear. 2. Use "Netflix, Inc." everywhere. 3. Use a single line for the copyright for grep friendliness. 4. Use date ranges in all places for our stuff. Approved by: Netflix Legal (who gave me the form), adrian@ (pmc files)
58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
#ifndef __eval_expr_h__
|
|
#define __eval_expr_h__
|
|
/*-
|
|
* Copyright (c) 2015 Netflix, Inc.
|
|
*
|
|
* 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,
|
|
* in this position and unchanged.
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
enum exptype {
|
|
TYPE_OP_PLUS,
|
|
TYPE_OP_MINUS,
|
|
TYPE_OP_MULT,
|
|
TYPE_OP_DIVIDE,
|
|
TYPE_PARN_OPEN,
|
|
TYPE_PARN_CLOSE,
|
|
TYPE_VALUE_CON,
|
|
TYPE_VALUE_PMC
|
|
};
|
|
|
|
#define STATE_UNSET 0 /* We have no setting yet in value */
|
|
#define STATE_FILLED 1 /* We have filled in value */
|
|
|
|
struct expression {
|
|
struct expression *next; /* Next in expression. */
|
|
struct expression *prev; /* Prev in expression. */
|
|
double value; /* If there is a value to set */
|
|
enum exptype type; /* What is it */
|
|
uint8_t state; /* Current state if value type */
|
|
char name[252]; /* If a PMC whats the name, con value*/
|
|
};
|
|
|
|
struct expression *parse_expression(char *str);
|
|
double run_expr(struct expression *exp, int initial_call, struct expression **lastone);
|
|
void print_exp(struct expression *exp);
|
|
#endif
|