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81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* Copyright (c) 1993 David I. Bell
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* Permission is granted to use, distribute, or modify this source,
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* provided that this copyright notice remains intact.
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*/
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#ifndef FUNC_H
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#define FUNC_H
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#include "calc.h"
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#include "label.h"
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/*
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* Structure of a function.
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* The f_opcodes array is actually of variable size.
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*/
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typedef struct func FUNC;
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struct func {
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FUNC *f_next; /* next function in list */
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unsigned long f_opcodecount; /* size of opcode array */
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unsigned int f_localcount; /* number of local variables */
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unsigned int f_paramcount; /* max number of parameters */
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char *f_name; /* function name */
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VALUE f_savedvalue; /* saved value of last expression */
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unsigned long f_opcodes[1]; /* array of opcodes (variable length) */
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};
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/*
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* Amount of space needed to allocate a function of n opcodes.
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*/
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#define funcsize(n) (sizeof(FUNC) + (n) * sizeof(long))
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/*
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* Size of a character pointer rounded up to a number of opcodes.
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*/
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#define PTR_SIZE ((sizeof(char *) + sizeof(long) - 1) / sizeof(long))
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/*
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* The current function being compiled.
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*/
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extern FUNC *curfunc;
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/*
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* Functions to handle functions.
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*/
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extern FUNC *findfunc(long index);
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extern char *namefunc(long index);
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extern BOOL evaluate(BOOL nestflag);
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extern long adduserfunc(char *name);
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extern void beginfunc(char *name, BOOL newflag);
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extern int builtinopcode(long index);
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extern char *builtinname(long index);
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extern int dumpop(unsigned long *pc);
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extern void addop(long op);
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extern void endfunc(void);
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extern void addopone(long op, long arg);
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extern void addoptwo(long op, long arg1, long arg2);
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extern void addoplabel(long op, LABEL *label);
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extern void addopptr(long op, char *ptr);
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extern void writeindexop(void);
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extern void showbuiltins(void);
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extern int getbuiltinfunc(char *name);
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extern void builtincheck(long index, int count);
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extern void addopfunction(long op, long index, int count);
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extern void showfunctions(void);
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extern void initfunctions(void);
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extern void clearopt(void);
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extern void updateoldvalue(FUNC *fp);
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extern void calculate(FUNC *fp, int argcount);
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extern VALUE builtinfunc(long index, int argcount, VALUE *stck);
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#endif
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/* END CODE */
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