445 lines
11 KiB
C
445 lines
11 KiB
C
/***************************************************************************
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class.h
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Class loader
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(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#ifndef __GBX_CLASS_H
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#define __GBX_CLASS_H
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#include "gb_error.h"
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#include "gb_alloc.h"
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#include "gbx_type.h"
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#include "gb_table.h"
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#include "gbx_class_desc.h"
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#include "gbx_component.h"
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typedef
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int CLASS_ID;
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/*
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typedef
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struct {
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unsigned char flag;
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unsigned char id;
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short value;
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}
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PACKED
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CLASS_TYPE;
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*/
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typedef
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struct {
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CTYPE type;
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int pos;
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}
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PACKED
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CLASS_VAR;
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typedef
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unsigned short CLASS_REF;
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typedef
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union {
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TYPE type;
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struct { TYPE type; double value; } PACKED _float;
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struct { TYPE type; int value; } PACKED _integer;
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struct { TYPE type; long long value; } PACKED _long;
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struct { TYPE type; char *addr; int len; } PACKED _string;
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struct { TYPE type; int val[2]; } PACKED _swap;
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}
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PACKED
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CLASS_CONST;
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typedef
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struct {
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CTYPE type;
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}
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PACKED
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CLASS_LOCAL;
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typedef
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struct {
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TYPE type;
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}
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PACKED
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CLASS_PARAM;
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typedef
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struct {
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SYMBOL sym;
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int value;
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}
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LOCAL_SYMBOL;
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typedef
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struct {
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unsigned short line;
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unsigned short nline;
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unsigned short *pos;
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char *name;
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LOCAL_SYMBOL *local;
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short n_local;
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unsigned short _reserved;
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}
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PACKED
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FUNC_DEBUG;
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typedef
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struct {
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TYPE type;
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char n_param;
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char npmin;
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char vararg;
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char _reserved;
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short n_local;
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short n_ctrl;
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short stack_usage;
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short error;
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unsigned short *code;
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CLASS_PARAM *param;
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CLASS_LOCAL *local;
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FUNC_DEBUG *debug;
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}
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PACKED
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FUNCTION;
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typedef
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struct {
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TYPE type;
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short n_param;
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short _reserved;
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CLASS_PARAM *param;
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char *name;
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}
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PACKED
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CLASS_EVENT;
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typedef
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struct {
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TYPE type;
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short n_param;
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unsigned loaded : 1;
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unsigned _reserved : 15;
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CLASS_PARAM *param;
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char *alias;
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char *library;
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}
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PACKED
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CLASS_EXTERN;
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typedef
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struct {
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uint magic;
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uint version;
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uint endian;
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uint flag;
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}
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PACKED
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CLASS_HEADER;
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typedef
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struct {
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short parent;
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short flag;
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int s_static;
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int s_dynamic;
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}
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PACKED
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CLASS_INFO;
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typedef
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struct {
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TYPE type;
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int dim[0];
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}
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CLASS_ARRAY;
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struct _CLASS;
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typedef
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struct {
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SYMBOL sym;
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CTYPE ctype;
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int value;
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}
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GLOBAL_SYMBOL;
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typedef
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struct {
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short n_cst;
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short n_stat;
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short n_dyn;
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short n_func;
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CLASS_CONST *cst;
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CLASS_VAR *stat;
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CLASS_VAR *dyn;
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FUNCTION *func;
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CLASS_EVENT *event;
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CLASS_EXTERN *ext;
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CLASS_ARRAY **array;
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struct _CLASS **class_ref;
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char **unknown;
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GLOBAL_SYMBOL *global; /* symboles globaux */
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short n_global;
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short n_ext;
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}
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PACKED
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CLASS_LOAD;
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enum
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{
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CS_NULL = 0,
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CS_LOADED = 1,
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CS_READY = 2
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};
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typedef
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struct _CLASS {
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struct _CLASS *class; /* 4 Points at the 'Class' class ! */
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int ref; /* 8 Reference count */
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int count; /* 12 Number of instanciated objects */
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struct _CLASS *parent; /* 16 Inherited class */
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COMPONENT *component; /* 20 The component the class belongs to */
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char *name; /* 24 Class name */
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char *path; /* 28 Source file path */
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unsigned state : 2; /* Initialization state */
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unsigned debug : 1; /* Debugging information ? */
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unsigned free_name : 1; /* Must free the class name */
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unsigned free_event : 1; /* Must free class->event */
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unsigned in_load : 1; /* Class being loaded */
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unsigned exit : 1; /* Marker used by CLASS_exit */
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unsigned auto_create : 1; /* Automatically instanciated */
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unsigned no_create : 1; /* Cannot instanciate this class */
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unsigned is_virtual : 1; /* Virtual class (name beginning with a dot) */
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unsigned mmapped : 1; /* mmap() was used to load the class */
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unsigned swap : 1; /* class endianness was swapped */
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unsigned enum_static : 1; /* if class enumeration is static */
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unsigned _flag : 3; /* 30 */
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short n_desc; /* 32 number of descriptions */
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CLASS_DESC_SYMBOL *table; /* 36 class description */
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short n_event; /* 38 number of events */
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short _reserved; /* 40 */
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CLASS_EVENT *event; /* 44 event description */
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int _reserved1; /* 48 class instanctiation method (NOT USED ANYMORE) */
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int _reserved2; /* 52 class freeing method (NOT USED ANYMORE) */
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int (*check)(); /* 56 method for checking that an object is valid */
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short special[16]; /* 88 special functions index (_new, _free, ...) */
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uint size_stat; /* 92 static class size */
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uint size; /* 96 dynamic class size */
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uint off_event; /* 100 offset of OBJECT_EVENT structure in the object */
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char *data; /* 104 class file data for loaded class / generated description for native class */
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CLASS_LOAD *load; /* 108 information about loaded class */
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char *stat; /* 112 static class data */
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TYPE *signature; /* 116 signatures address */
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char *string; /* 120 strings address */
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void *instance; /* 124 automatically created instance */
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struct _CLASS *next; /* 128 next class */
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}
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CLASS;
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typedef
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struct {
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SYMBOL sym;
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CLASS *class;
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}
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PACKED
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CLASS_SYMBOL;
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typedef
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enum {
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SPEC_NEW,
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SPEC_FREE,
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SPEC_GET,
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SPEC_PUT,
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SPEC_FIRST,
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SPEC_NEXT,
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SPEC_CALL,
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SPEC_UNKNOWN,
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SPEC_COMPARE,
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SPEC_PRINT
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}
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CLASS_SPECIAL;
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typedef
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enum
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{
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CF_DEBUG = 1
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}
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CLASS_FLAG;
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typedef
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enum
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{
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CI_EXPORTED = 1,
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CI_AUTOCREATE = 2,
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CI_OPTIONAL = 4,
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CI_NOCREATE = 8
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}
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CLASS_INFO_FLAG;
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#ifndef __GBX_CLASS_INIT_C
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EXTERN CLASS *CLASS_Class;
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EXTERN CLASS *CLASS_Enum;
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EXTERN CLASS *CLASS_Symbol;
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EXTERN CLASS *CLASS_Array;
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EXTERN CLASS *CLASS_Collection;
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EXTERN CLASS *CLASS_Stream;
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EXTERN CLASS *CLASS_File;
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EXTERN CLASS *CLASS_Stat;
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EXTERN CLASS *CLASS_AppArgs;
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EXTERN CLASS *CLASS_AppEnv;
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EXTERN CLASS *CLASS_Application;
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EXTERN CLASS *CLASS_Process;
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EXTERN CLASS *CLASS_Component;
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EXTERN CLASS *CLASS_BooleanArray;
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EXTERN CLASS *CLASS_ByteArray;
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EXTERN CLASS *CLASS_ShortArray;
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EXTERN CLASS *CLASS_IntegerArray;
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EXTERN CLASS *CLASS_SingleArray;
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EXTERN CLASS *CLASS_FloatArray;
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EXTERN CLASS *CLASS_DateArray;
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EXTERN CLASS *CLASS_StringArray;
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EXTERN CLASS *CLASS_ObjectArray;
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EXTERN CLASS *CLASS_VariantArray;
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EXTERN CLASS *CLASS_LongArray;
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EXTERN CLASS *CLASS_SubCollection;
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#endif
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#define DO_ERROR ((void (*)()) -1)
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#define FUNCTION_is_static(func) ((func)->type & TF_STATIC)
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#define CLASS_is_extern(class) ((class)->load == NULL)
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#define CLASS_is_native CLASS_is_extern
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#define FUNCTION_is_native(_desc) (((uint)(_desc)->exec >> 16) != 0)
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#define FUNC_INIT_STATIC 0
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#define FUNC_INIT_DYNAMIC 1
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/* class.c */
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PUBLIC void CLASS_init(void);
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PUBLIC void CLASS_exit(void);
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PUBLIC CLASS *CLASS_get(const char *name);
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PUBLIC int CLASS_count(void);
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PUBLIC CLASS_DESC_SYMBOL *CLASS_get_symbol(CLASS *class, const char *name);
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PUBLIC CLASS_DESC *CLASS_get_symbol_desc(CLASS *class, const char *name);
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PUBLIC short CLASS_get_symbol_index_kind(CLASS *class, const char *name, int kind, int kind2);
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PUBLIC CLASS_DESC *CLASS_get_symbol_desc_kind(CLASS *class, const char *name, int kind, int kind2);
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PUBLIC CLASS_DESC_METHOD *CLASS_get_special_desc(CLASS *class, int spec);
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#define CLASS_get_desc(_class, _index) (((_class)->table[_index].desc))
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PUBLIC CLASS_DESC_EVENT *CLASS_get_event_desc(CLASS *class, const char *name);
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PUBLIC int CLASS_find_symbol(CLASS *class, const char *name);
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PUBLIC int CLASS_find_symbol_with_prefix(CLASS *class, const char *name, const char *prefix);
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PUBLIC CLASS *CLASS_look(const char *name, int len);
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PUBLIC CLASS *CLASS_find(const char *name);
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PUBLIC TABLE *CLASS_get_table(void);
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PUBLIC boolean CLASS_inherits(CLASS *class, CLASS *parent);
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PUBLIC CLASS *CLASS_replace_global(const char *name);
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PUBLIC CLASS *CLASS_look_global(const char *name, int len);
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PUBLIC CLASS *CLASS_find_global(const char *name);
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PUBLIC CLASS *CLASS_check_global(char *name);
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PUBLIC void CLASS_ref(void *object);
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PUBLIC void CLASS_unref(void **pobject, boolean can_free);
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PUBLIC void CLASS_free(void **pobject);
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PUBLIC void CLASS_release(CLASS *class, char *data);
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PUBLIC int CLASS_get_inheritance(CLASS *class, CLASS **her);
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PUBLIC void CLASS_do_nothing();
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PUBLIC int CLASS_return_zero();
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PUBLIC void CLASS_sort(CLASS *class);
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PUBLIC void CLASS_inheritance(CLASS *class, CLASS *parent);
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PUBLIC void CLASS_make_description(CLASS *class, CLASS_DESC *desc, int n_desc, int *first);
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PUBLIC void CLASS_make_event(CLASS *class, int *first);
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PUBLIC void CLASS_calc_info(CLASS *class, int n_event, int size_dynamic, boolean all, int size_static);
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PUBLIC void *CLASS_auto_create(CLASS *class, int nparam);
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PUBLIC void CLASS_search_special(CLASS *class);
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PUBLIC CLASS_DESC_SYMBOL *CLASS_get_next_sorted_symbol(CLASS *class, int *index);
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int CLASS_can_be_used_like_an_array(CLASS *class);
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//PUBLIC void CLASS_create_array_class(CLASS *class);
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/* class_init.c */
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PUBLIC void CLASS_init_native(void);
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/* class_load.c */
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PUBLIC void CLASS_load_without_init(CLASS *class);
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PUBLIC void CLASS_load_real(CLASS *class);
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#define CLASS_load(_class) \
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{ \
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if ((_class)->state != CS_READY) \
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CLASS_load_real(_class); \
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}
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/* class_native.c */
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PUBLIC CLASS *CLASS_register_class(GB_DESC *desc, CLASS *class);
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PUBLIC CLASS *CLASS_register(GB_DESC *desc);
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#define SET_IF_NULL(ptr, val) if ((ptr) == NULL) (ptr) = (val)
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/*
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#define DO_NOTHING(ptr) if ((ptr) == NULL) (ptr) = CLASS_do_nothing
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#define RETURN_ZERO(ptr) if ((ptr) == NULL) (ptr) = CLASS_return_zero
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*/
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#define CLASS_is_virtual(class) (class->is_virtual)
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#endif /* _CLASS_H */
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