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/*
* func - built-in function interface definitions
*
* Copyright (C) 1999 David I. Bell
*
* Calc is open software; you can redistribute it and/or modify it under
* the terms of the version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* Calc is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
* Public License for more details.
*
* A copy of version 2.1 of the GNU Lesser General Public License is
* distributed with calc under the filename COPYING-LGPL. You should have
* received a copy with calc; if not, write to Free Software Foundation, Inc.
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* @(#) $Revision: 29.4 $
* @(#) $Id: func.h,v 29.4 2001/06/08 21:00:58 chongo Exp $
* @(#) $Source: /usr/local/src/cmd/calc/RCS/func.h,v $
*
* Under source code control: 1990/02/15 01:48:33
* File existed as early as: before 1990
*
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
#if !defined(__FUNC_H__)
#define __FUNC_H__
#if defined(CALC_SRC) /* if we are building from the calc source tree */
# include "calc.h"
# include "label.h"
#else
# include <calc/calc.h>
# include <calc/label.h>
#endif
/*
* Structure of a function.
* The f_opcodes array is actually of variable size.
*/
typedef struct func FUNC;
struct func {
FUNC *f_next; /* next function in list */
unsigned long f_opcodecount; /* size of opcode array */
unsigned int f_localcount; /* number of local variables */
unsigned int f_paramcount; /* max number of parameters */
char *f_name; /* function name */
VALUE f_savedvalue; /* saved value of last expression */
unsigned long f_opcodes[1]; /* array of opcodes (variable length) */
};
/*
* Amount of space needed to allocate a function of n opcodes.
*/
#define funcsize(n) (sizeof(FUNC) + (n) * sizeof(long))
/*
* Size of a character pointer rounded up to a number of opcodes.
*/
#define PTR_SIZE ((sizeof(char *) + sizeof(long) - 1) / sizeof(long))
/*
* The current function being compiled.
*/
extern FUNC *curfunc;
/*
* Functions to handle functions.
*/
extern FUNC *findfunc(long index);
extern char *namefunc(long index);
extern BOOL evaluate(BOOL nestflag);
extern long adduserfunc(char *name);
extern void rmuserfunc(char *name);
extern void rmalluserfunc(void);
extern long getuserfunc(char *name);
extern void beginfunc(char *name, BOOL newflag);
extern int builtinopcode(long index);
extern char *builtinname(long index);
extern int dumpop(unsigned long *pc);
extern void addop(long op);
extern void endfunc(void);
extern void addopone(long op, long arg);
extern void addoptwo(long op, long arg1, long arg2);
extern void addoplabel(long op, LABEL *label);
extern void addopptr(long op, char *ptr);
extern void writeindexop(void);
extern void showbuiltins(void);
extern int getbuiltinfunc(char *name);
extern void builtincheck(long index, int count);
extern void addopfunction(long op, long index, int count);
extern void showfunctions(void);
extern void initfunctions(void);
extern void clearopt(void);
extern void updateoldvalue(FUNC *fp);
extern void calculate(FUNC *fp, int argcount);
extern VALUE builtinfunc(long index, int argcount, VALUE *stck);
extern void freenumbers(FUNC *);
extern void freefunc(FUNC *);
#endif /* !__FUNC_H__ */
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