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/* $OpenBSD: bcode.h,v 1.5 2006/01/16 08:09:25 otto Exp $ */
/*
* Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
*
* 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.
*/
#include <sys/types.h>
#include <ssl/bn.h>
struct number {
BIGNUM *number;
u_int scale;
};
enum stacktype {
BCODE_NONE,
BCODE_NUMBER,
BCODE_STRING
};
enum bcode_compare {
BCODE_EQUAL,
BCODE_NOT_EQUAL,
BCODE_LESS,
BCODE_NOT_LESS,
BCODE_GREATER,
BCODE_NOT_GREATER
};
struct array;
struct value {
union {
struct number *num;
char *string;
} u;
struct array *array;
enum stacktype type;
};
struct array {
struct value *data;
size_t size;
};
struct stack {
struct value *stack;
ssize_t sp;
size_t size;
};
struct source;
struct vtable {
int (*readchar)(struct source *);
void (*unreadchar)(struct source *);
char *(*readline)(struct source *);
void (*free)(struct source *);
};
struct source {
struct vtable *vtable;
union {
FILE *stream;
struct {
u_char *buf;
size_t pos;
} string;
} u;
int lastchar;
};
void init_bmachine(bool);
void reset_bmachine(struct source *);
void scale_number(BIGNUM *, int);
void normalize(struct number *, u_int);
void eval(void);
void pn(const char *, const struct number *);
void pbn(const char *, const BIGNUM *);
void negate(struct number *);
void split_number(const struct number *, BIGNUM *, BIGNUM *);
void bmul_number(struct number *, struct number *,
struct number *);
extern BIGNUM zero;
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