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/*
* Copyright (c) 2003-2010 Alexandre Ratchov <alex@caoua.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef MIDISH_DATA_H
#define MIDISH_DATA_H
#define DATA_MAXNITEMS 4096
struct name;
/*
* the following represents a "value" for the interpreter. all types
* use the same strucure
*/
struct data {
#define DATA_NIL 0
#define DATA_LONG 1
#define DATA_STRING 2
#define DATA_REF 3
#define DATA_LIST 4
#define DATA_USER 5
#define DATA_RANGE 6
unsigned type; /* type of the value */
union {
char *str; /* if string */
long num; /* if a number */
struct data *list; /* if a list of values */
char *ref; /* if a reference (name) */
void *user; /* user defined */
struct { /* a range */
long min;
long max;
} range;
} val;
struct data *next;
};
struct data *data_newnil(void);
struct data *data_newlong(long);
struct data *data_newstring(char *);
struct data *data_newref(char *);
struct data *data_newlist(struct data *);
struct data *data_newuser(void *);
struct data *data_newrange(long, long);
void data_delete(struct data *);
void data_setfield(struct data *, char *);
void data_log(struct data *);
void data_listadd(struct data *, struct data *);
void data_listremove(struct data *, struct data *);
struct data *data_listlookup(struct data *, struct name *);
void data_assign(struct data *, struct data *);
unsigned data_eval(struct data *);
unsigned data_id(struct data *, struct data *);
unsigned data_not(struct data *);
unsigned data_and(struct data *, struct data *);
unsigned data_or(struct data *, struct data *);
unsigned data_eq(struct data *, struct data *);
unsigned data_neq(struct data *, struct data *);
unsigned data_lt(struct data *, struct data *);
unsigned data_le(struct data *, struct data *);
unsigned data_gt(struct data *, struct data *);
unsigned data_ge(struct data *, struct data *);
unsigned data_add(struct data *, struct data *);
unsigned data_sub(struct data *, struct data *);
unsigned data_neg(struct data *);
unsigned data_mul(struct data *, struct data *);
unsigned data_div(struct data *, struct data *);
unsigned data_mod(struct data *, struct data *);
unsigned data_lshift(struct data *, struct data *);
unsigned data_rshift(struct data *, struct data *);
unsigned data_bitand(struct data *, struct data *);
unsigned data_bitor(struct data *, struct data *);
unsigned data_bitxor(struct data *, struct data *);
unsigned data_bitnot(struct data *);
#endif /* MIDISH_DATA_H */
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