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parse.h
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94 lines (77 loc) · 3.28 KB
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/*
* $Id: parse.h,v 1.6 2000/11/01 18:57:33 broeker Exp $
*/
/* GNUPLOT - parse.h */
/*[
* Copyright 1986 - 1993, 1998 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
#ifndef PARSE_H
# define PARSE_H
# include "syscfg.h"
# include "gp_types.h"
#include "eval.h"
#define MAX_AT_LEN 150 /* max number of entries in action table */
/* externally usable types defined by parse.h */
enum operators {
/* keep this in line with table in eval.c */
PUSH, PUSHC, PUSHD1, PUSHD2, PUSHD, CALL, CALLN, LNOT, BNOT, UMINUS,
LOR, LAND, BOR, XOR, BAND, EQ, NE, GT, LT, GE, LE, PLUS, MINUS, MULT,
DIV, MOD, POWER, FACTORIAL, BOOLE,
DOLLARS, /* for using extension - div */
/* only jump operators go between jump and sf_start, for is_jump() */
JUMP, JUMPZ, JUMPNZ, JTERN, SF_START
};
#define is_jump(operator) \
((operator) >=(int)JUMP && (operator) <(int)SF_START)
/* action table entry */
struct at_entry {
enum operators index; /* index of p-code function */
union argument arg;
};
struct at_type {
/* count of entries in .actions[] */
int a_count;
/* will usually be less than MAX_AT_LEN is malloc()'d copy */
struct at_entry actions[MAX_AT_LEN];
};
/* exported variables of parse.c */
/* The choice of dummy variables, as set by 'set dummy', 'set polar'
* and 'set parametric' */
extern char set_dummy_var[MAX_NUM_VAR][MAX_ID_LEN+1];
/* the currently used 'dummy' variables. Usually a copy of
* set_dummy_var, but may be changed by the '(s)plot' command
* containing an explicit range (--> 'plot [phi=0..pi]') */
extern char c_dummy_var[MAX_NUM_VAR][MAX_ID_LEN+1];
/* Prototypes of exported functions in parse.c */
/* void fpe __PROTO((void)); */
void evaluate_at __PROTO((struct at_type *at_ptr, struct value *val_ptr));
struct value * const_express __PROTO((struct value *valptr));
struct at_type * temp_at __PROTO((void));
struct at_type * perm_at __PROTO((void));
#endif /* PARSE_H */