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// Emacs style mode select -*- C++ -*-
//----------------------------------------------------------------------------
//
// $Id: t_parse.h,v 1.3 2001/08/06 23:57:10 stroggonmeth Exp $
//
// Copyright(C) 2000 Simon Howard
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// $Log: t_parse.h,v $
// Revision 1.3 2001/08/06 23:57:10 stroggonmeth
// Removed portal code, improved 3D floors in hardware mode.
//
// Revision 1.2 2001/03/13 22:14:20 stroggonmeth
// Long time no commit. 3D floors, FraggleScript, portals, ect.
//
// Revision 1.1 2000/11/02 17:57:28 stroggonmeth
// FraggleScript files...
//
//
//--------------------------------------------------------------------------
#ifndef __PARSE_H__
#define __PARSE_H__
#include "p_mobj.h" // for mobj_t
#include "m_fixed.h"
#define T_MAXTOKENS 128
#define TOKENLENGTH 128
#define intvalue(v) \
( (v).type == svt_string ? atoi((v).value.s) : \
(v).type == svt_fixed ? ((v).value.f / FRACUNIT) : \
(v).type == svt_mobj ? (v).value.mobj ? 1 : 0 : (v).value.i )
#define fixedvalue(v) \
( (v).type == svt_fixed ? (v).value.f : \
(v).type == svt_string ? (atof((v).value.s) * FRACUNIT) : \
intvalue(v) * FRACUNIT )
typedef struct script_s script_t;
typedef struct svalue_s svalue_t;
typedef struct operator_s operator_t;
struct svalue_s
{
int type;
union
{
long i;
fixed_t f;
char *s;
char *labelptr; // goto() label
mobj_t *mobj;
} value;
};
char *stringvalue(svalue_t v);
#include "t_vari.h"
#include "t_prepro.h"
#define MAXSCRIPTS 256
struct script_s
{
// script data
char *data;
int scriptnum; // this script's number
int len;
// {} sections
section_t *sections[SECTIONSLOTS];
// variables:
svariable_t *variables[VARIABLESLOTS];
// ptr to the parent script
// the parent script is the script above this level
// eg. individual linetrigger scripts are children
// of the levelscript, which is a child of the
// global_script
script_t *parent;
// child scripts.
// levelscript holds ptrs to all of the level's scripts
// here.
script_t *children[MAXSCRIPTS];
mobj_t *trigger; // object which triggered this script
//SoM: Used for if/elseif/else statements
boolean lastiftrue;
};
struct operator_s
{
char *string;
svalue_t (*handler)(int, int, int); // left, mid, right
int direction;
};
enum
{
forward,
backward
};
void run_script(script_t *script);
void continue_script(script_t *script, char *continue_point);
void parse_include(char *lumpname);
void run_statement();
void script_error(char *s, ...);
svalue_t evaluate_expression(int start, int stop);
int find_operator(int start, int stop, char *value);
int find_operator_backwards(int start, int stop, char *value);
/******* tokens **********/
typedef enum
{
name, // a name, eg 'count1' or 'frag'
number,
operator,
string,
unset,
function // function name
} tokentype_t;
enum // brace types: where current_section is a { or }
{
bracket_open,
bracket_close
};
extern svalue_t nullvar;
extern int script_debug;
extern script_t *current_script;
extern mobj_t *trigger_obj;
extern int killscript;
extern char *tokens[T_MAXTOKENS];
extern tokentype_t tokentype[T_MAXTOKENS];
extern int num_tokens;
extern char *rover; // current point reached in parsing
extern char *linestart; // start of the current expression
extern section_t *current_section;
extern section_t *prev_section;
extern int bracetype;
// the global_script is the root
// script and contains only built-in
// FraggleScript variables/functions
extern script_t global_script;
extern script_t hub_script;
#endif
//---------------------------------------------------------------------------
//
// $Log: t_parse.h,v $
// Revision 1.3 2001/08/06 23:57:10 stroggonmeth
// Removed portal code, improved 3D floors in hardware mode.
//
// Revision 1.2 2001/03/13 22:14:20 stroggonmeth
// Long time no commit. 3D floors, FraggleScript, portals, ect.
//
// Revision 1.1 2000/11/02 17:57:28 stroggonmeth
// FraggleScript files...
//
// Revision 1.1.1.1 2000/04/30 19:12:09 fraggle
// initial import
//
//
//---------------------------------------------------------------------------
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