/*
Copyright (C) 1996-1997 Id Software, Inc.

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.

*/

// this file is shared by quake and qcc

typedef int func_t;
typedef int string_t;

typedef enum {ev_void, ev_string, ev_float, ev_vector, ev_entity, ev_field, ev_function, ev_pointer} etype_t;


#define OFS_NULL    0
#define OFS_RETURN    1
#define OFS_PARM0   4   // leave 3 ofs for each parm to hold vectors
#define OFS_PARM1   7
#define OFS_PARM2   10
#define OFS_PARM3   13
#define OFS_PARM4   16
#define OFS_PARM5   19
#define OFS_PARM6   22
#define OFS_PARM7   25
#define RESERVED_OFS  28


enum {
  OP_DONE,
  OP_MUL_F,
  OP_MUL_V,
  OP_MUL_FV,
  OP_MUL_VF,
  OP_DIV_F,
  OP_ADD_F,
  OP_ADD_V,
  OP_SUB_F,
  OP_SUB_V,
  
  OP_EQ_F,
  OP_EQ_V,
  OP_EQ_S,
  OP_EQ_E,
  OP_EQ_FNC,
  
  OP_NE_F,
  OP_NE_V,
  OP_NE_S,
  OP_NE_E,
  OP_NE_FNC,
  
  OP_LE,
  OP_GE,
  OP_LT,
  OP_GT,

  OP_LOAD_F,
  OP_LOAD_V,
  OP_LOAD_S,
  OP_LOAD_ENT,
  OP_LOAD_FLD,
  OP_LOAD_FNC,

  OP_ADDRESS,

  OP_STORE_F,
  OP_STORE_V,
  OP_STORE_S,
  OP_STORE_ENT,
  OP_STORE_FLD,
  OP_STORE_FNC,

  OP_STOREP_F,
  OP_STOREP_V,
  OP_STOREP_S,
  OP_STOREP_ENT,
  OP_STOREP_FLD,
  OP_STOREP_FNC,

  OP_RETURN,
  OP_NOT_F,
  OP_NOT_V,
  OP_NOT_S,
  OP_NOT_ENT,
  OP_NOT_FNC,
  OP_IF,
  OP_IFNOT,
  OP_CALL0,
  OP_CALL1,
  OP_CALL2,
  OP_CALL3,
  OP_CALL4,
  OP_CALL5,
  OP_CALL6,
  OP_CALL7,
  OP_CALL8,
  OP_STATE,
  OP_GOTO,
  OP_AND,
  OP_OR,
  
  OP_BITAND,
  OP_BITOR
};


typedef struct statement_s
{
  unsigned short  op;
  short a,b,c;
} dstatement_t;

typedef struct
{
  unsigned short  type;   // if DEF_SAVEGLOBGAL bit is set
                // the variable needs to be saved in savegames
  unsigned short  ofs;
  int     s_name;
} ddef_t;
#define DEF_SAVEGLOBAL  (1<<15)

#define MAX_PARMS 8

typedef struct
{
  int   first_statement;  // negative numbers are builtins
  int   parm_start;
  int   locals;       // total ints of parms + locals
  
  int   profile;    // runtime
  
  int   s_name;
  int   s_file;     // source file defined in
  
  int   numparms;
  byte  parm_size[MAX_PARMS];
} dfunction_t;


#define PROG_VERSION  6
typedef struct
{
  int   version;
  int   crc;      // check of header file
  
  int   ofs_statements;
  int   numstatements;  // statement 0 is an error

  int   ofs_globaldefs;
  int   numglobaldefs;
  
  int   ofs_fielddefs;
  int   numfielddefs;
  
  int   ofs_functions;
  int   numfunctions; // function 0 is an empty
  
  int   ofs_strings;
  int   numstrings;   // first string is a null string

  int   ofs_globals;
  int   numglobals;
  
  int   entityfields;
} dprograms_t;