106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
/**********
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Copyright 1990 Regents of the University of California. All rights reserved.
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Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group
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**********/
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/*
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*
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* Stuff for parsing -- used by the parser and in ft_evaluate().
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*/
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#ifndef FTEPARSE
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#define FTEPARSE
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#include "cpstd.h"
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#include "dvec.h"
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#include "plot.h"
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/* FIXME: Split this file and adjust all callers. */
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#if 0
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#warning "Please use a more specific header than fteparse.h"
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#endif
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#include "pnode.h"
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/* Operations. These should really be considered functions. */
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struct op {
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int op_num; /* From parser #defines. */
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char *op_name; /* Printing name. */
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char op_arity; /* One or two. */
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struct dvec *(*op_func)(); /* The function to do the work. */
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} ;
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/* The functions that are available. */
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struct func {
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/* The print name of the function. */
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char *fu_name;
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/* The function. */
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void *(*fu_func)(void *data, short int type, int length,
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int *newlength, short int *newtype);
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} ;
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/* User-definable functions. The idea of ud_name is that the args are
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* kept in strings after the name, all seperated by '\0's. There
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* will be ud_arity of them.
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*/
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struct udfunc {
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char *ud_name; /* The name. */
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int ud_arity; /* The arity of the function. */
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struct pnode *ud_text; /* The definition. */
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struct udfunc *ud_next; /* Link pointer. */
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} ;
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#define MAXARITY 32
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/* Parser elements. */
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struct element {
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int e_token; /* One of the below. */
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int e_type; /* If the token is VALUE. */
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union {
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char *un_string;
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double un_double;
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struct pnode *un_pnode;
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} e_un;
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#define e_string e_un.un_string
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#define e_double e_un.un_double
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#define e_indices e_un.un_indices
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#define e_pnode e_un.un_pnode
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};
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/* See the table in parse.c */
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#define END 0
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#define PLUS 1
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#define MINUS 2
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#define TIMES 3
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#define MOD 4
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#define DIVIDE 5
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#define POWER 6
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#define UMINUS 7
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#define LPAREN 8
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#define RPAREN 9
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#define COMMA 10
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#define VALUE 11
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#define EQ 12
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#define GT 13
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#define LT 14
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#define GE 15
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#define LE 16
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#define NE 17
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#define AND 18
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#define OR 19
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#define NOT 20
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#define INDX 21
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#define RANGE 22
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#define NUM 1
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#define STRING 2
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#define PNODE 3
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#endif /* FTEPARSE */
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