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24ec421a421cd04a5b795cba2dffee781c1d0bf6
harbour-core/harbour/source/vm/classes.c
Viktor Szakats 24ec421a42 2008-05-21 17:45 UTC+0100 Viktor Szakats (harbour.01 syenar hu) 
* harbour.spec
     + Added HU translation (cpwin).

   * source/rtl/gtfunc.c
     % Minor opt.

   * source/rtl/console.c
   * source/rtl/fserror.c
   * source/rtl/strmatch.c
   * source/rtl/padr.c
   * source/rtl/hbhex.c
   * source/rtl/at.c
   * source/rtl/abs.c
   * source/rtl/dates.c
   * source/rtl/padc.c
   * source/rtl/mod.c
   * source/rtl/hbrandom.c
   * source/rtl/filesys.c
   * source/rtl/padl.c
   * source/rtl/val.c
   * source/rtl/hbregex.c
   * source/vm/runner.c
   * source/vm/hashes.c
   * source/vm/itemapi.c
   * source/vm/hvm.c
   * source/vm/maindllp.c
   * source/vm/fm.c
   * source/vm/arrayshb.c
   * source/vm/classes.c
   * source/common/hbtrace.c
     * Formatting (whitespace only)
2008-05-21 15:50:34 +00:00

4575 lines
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/*
* $Id$
*/
/*
* Harbour Project source code:
* Base-routines for OOPS system
*
* Copyright 1999 Antonio Linares <alinares@fivetech.com>
* www - http://www.harbour-project.org
*
* 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, 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
/*
* The following parts are Copyright of the individual authors.
* www - http://www.harbour-project.org
*
* Copyright 1999 Eddie Runia <eddie@runia.com>
* :CLASSSEL()
* __clsDelMsg()
* __clsModMsg()
* __clsInstSuper()
* __cls_CntClsData()
* __cls_CntData()
* __cls_DecData()
* __cls_IncData()
* __objClone()
* __objHasMsg()
* __objSendMsg()
*
* Copyright 1999-2001 Viktor Szakats <viktor.szakats@syenar.hu>
* __CLASSNEW()
* __CLASSINSTANCE()
* __CLASSADD()
* __CLASSNAME()
* __CLASSSEL() (based on hb___msgClsSel())
*
* Copyright 1999 Janica Lubos <janica@fornax.elf.stuba.sk>
* hb_clsDictRealloc()
*
* Copyright 2000 ( ->07/2000 ) JF. Lefebvre <jfl@mafact.com> & RA. Cuylen <cakiral@altern.org
* Multiple inheritence fully implemented
* Forwarding, delegating
* Data initialisation & Autoinit for Bool and Numeric
* Scoping : Protected / exported
*
* Copyright 2000 ( 08/2000-> ) JF. Lefebvre <jfl@mafact.com>
* hb_clsDictRealloc() New version
* Now support of shared and not shared class data
* Multiple datas declaration fully supported
*
* 2000 RGlab
* Garbage collector fixe
*
* Copyright 2001 JF. Lefebvre <jfl@mafact.com>
* Super msg corrected
* Scoping : working for protected, hidden and readonly
* To Many enhancement and correction to give a full list :-)
* Improved class(y) compatibility
* Improved TopClass compatibility
* __CLS_PAR00() (Allow the creation of class wich not autoinherit of the default HBObject)
* Adding HB_CLS_ENFORCERO FLAG to disable Write access to RO VAR
* outside of Constructors /!\ Could be related to some incompatibility
* Added hb_objGetRealClsName to keep a full class tree ( for 99% cases )
* Fixed hb_clsIsParent
*
*
* hb_objGetMthd() & __CLSADDMSG modified to translate the followings operators
*
"+" = __OpPlus
"-" = __OpMinus
"*" = __OpMult
"/" = __OpDivide
"%" = __OpMod
"^" = __OpPower
"**" = __OpPower
"++" = __OpInc
"--" = __OpDec
"==" = __OpEqual
"=" = __OpEqual (same as "==")
"!=" = __OpNotEqual
"<>" = __OpNotEqual (same as "!=")
"#" = __OpNotEqual (same as "!=")
"<" = __OpLess
"<=" = __OpLessEqual
">" = __OpGreater
">=" = __OpGreaterEqual
"$" = __OpInstring
"$$" = __OpInclude
"!" = __OpNot
".NOT." = __OpNot (same as "!")
".AND." = __OpAnd
".OR." = __OpOr
":=" = __OpAssign ... not tested ...
"[]" = __OpArrayIndex
*
*
* See doc/license.txt for licensing terms.
*
*/
#include "hbvmopt.h"
#include "hbapi.h"
#include "hbapicls.h"
#include "hbstack.h"
#include "hbapierr.h"
#include "hbapiitm.h"
#include "hbvm.h"
#include "hboo.ch"
#include <ctype.h> /* For toupper() */
/* DEBUG only*/
/* #include <windows.h> */
typedef struct
{
PHB_ITEM pInitValue; /* Init Value for data */
USHORT uiType; /* HB_OO_MSG_DATA, HB_OO_MSG_CLASSDATA or HB_OO_MSG_INITIALIZED */
USHORT uiData; /* Item position in instance area or class data */
USHORT uiOffset; /* Supper cast instance area offset for HB_OO_MSG_DATA or real class item position */
USHORT uiSprClass; /* The real class where method were defined */
} INITDATA, * PINITDATA;
typedef struct
{
PHB_DYNS pMessage; /* Method symbolic name */
PHB_SYMB pFuncSym; /* Function symbol */
PHB_DYNS pAccMsg; /* Corresponding access method symbolic name */
HB_TYPE itemType; /* Type of item in restricted assignment */
USHORT uiSprClass; /* Originalclass'handel (super or current class'handel if not herited). */ /*Added by RAC&JF*/
USHORT uiScope; /* Scoping value */
USHORT uiData; /* Item position for instance data, class data and shared data (Harbour like, begin from 1) or delegated message index object */
USHORT uiOffset; /* position in pInitData for class datas (from 1) or offset to instance area in inherited instance data and supercast messages (from 0) */
USHORT uiPrevCls;
USHORT uiPrevMth;
#ifndef HB_NO_PROFILER
ULONG ulCalls; /* profiler support */
ULONG ulTime; /* profiler support */
ULONG ulRecurse; /* profiler support */
#endif
} METHOD, * PMETHOD;
#define HB_MSG_POOL
typedef struct
{
char * szName; /* Class name */
PHB_DYNS pClassSym; /* Class symbolic name */
PMETHOD pMethods; /* Class methods */
PHB_SYMB pClassFuncSym; /* Class function symbol */
PHB_SYMB pFriendModule; /* Class friend symbols */
PINITDATA pInitData; /* Class/instance Initialization data */
PHB_ITEM pClassDatas; /* Harbour Array for Class Datas */
PHB_ITEM pSharedDatas; /* Harbour Array for Class Shared Datas */
PHB_ITEM pInlines; /* Array for inline codeblocks */
PHB_SYMB * pFriendSyms; /* Friend functions' symbols */
ULONG ulOpFlags; /* Flags for overloaded operators */
USHORT fHasDestructor; /* has the class destructor message? */
USHORT fHasOnError; /* has the class OnError message? */
USHORT fLocked; /* Class is locked against modifications */
USHORT uiMethods; /* Total Method initialised Counter */
USHORT uiInitDatas; /* Total Method initialised Counter */
USHORT uiDatas; /* Total Data Counter */
USHORT uiDataFirst; /* First instance item from this class */
USHORT uiFriendSyms; /* Number of friend function's symbols */
USHORT uiFriendModule; /* Number of friend symbols in pFriendModule */
USHORT uiHashKey;
#ifdef HB_MSG_POOL
USHORT * puiMsgIdx;
USHORT uiMethodCount;
#endif
} CLASS, * PCLASS;
#define BUCKETBITS 2
#define BUCKETSIZE ( 1 << BUCKETBITS )
#define BUCKETMASK ( BUCKETSIZE - 1 )
#define HASHBITS 3
#define HASH_KEY ( ( 1 << HASHBITS ) - 1 )
#define HASH_KEYMAX ( 1 << ( 16 - BUCKETBITS ) )
#define hb_clsInited(p) ( (p)->pMethods != NULL )
#define hb_clsBucketPos( p, m ) ( ( (p)->uiSymNum & (m) ) << BUCKETBITS )
#ifdef HB_MSG_POOL
# define hb_clsMthNum(p) ( ( ULONG ) (p)->uiMethodCount )
#else
# define hb_clsMthNum(p) ( ( ( ULONG ) (p)->uiHashKey + 1 ) << BUCKETBITS )
#endif
#if defined( HB_REAL_BLOCK_SCOPE )
# undef HB_CLASSY_BLOCK_SCOPE
#elif !defined( HB_CLASSY_BLOCK_SCOPE )
# define HB_REAL_BLOCK_SCOPE
#endif
#if !defined( HB_CLASSY_BLOCK_SCOPE )
# define hb_clsSenderOffset() hb_stackBaseProcOffset( 1 )
#endif
static HARBOUR hb___msgGetData( void );
static HARBOUR hb___msgSetData( void );
static HARBOUR hb___msgGetClsData( void );
static HARBOUR hb___msgSetClsData( void );
static HARBOUR hb___msgGetShrData( void );
static HARBOUR hb___msgSetShrData( void );
static HARBOUR hb___msgEvalInline( void );
static HARBOUR hb___msgVirtual( void );
static HARBOUR hb___msgSuper( void );
static HARBOUR hb___msgRealClass( void );
static HARBOUR hb___msgPerform( void );
static HARBOUR hb___msgDelegate( void );
static HARBOUR hb___msgNoMethod( void );
static HARBOUR hb___msgScopeErr( void );
static HARBOUR hb___msgTypeErr( void );
static HARBOUR hb___msgNull( void );
static HARBOUR hb___msgClassH( void );
static HARBOUR hb___msgClassName( void );
static HARBOUR hb___msgClassSel( void );
/* static HARBOUR hb___msgClass( void ); */
/* static HARBOUR hb___msgClassParent( void ); */
/*
* The positions of items in symbol table below have to correspond
* to HB_OO_OP_* constants in hbapicls.h, [druzus]
*/
static HB_SYMB s_opSymbols[ HB_OO_MAX_OPERATOR + 1 ] = {
{ "__OPPLUS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 00 */
{ "__OPMINUS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 01 */
{ "__OPMULT", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 02 */
{ "__OPDIVIDE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 03 */
{ "__OPMOD", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 04 */
{ "__OPPOWER", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 05 */
{ "__OPINC", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 06 */
{ "__OPDEC", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 07 */
{ "__OPEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 08 */
{ "__OPEXACTEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 09 */
{ "__OPNOTEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 10 */
{ "__OPLESS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 11 */
{ "__OPLESSEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 12 */
{ "__OPGREATER", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 13 */
{ "__OPGREATEREQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 14 */
{ "__OPASSIGN", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 15 */
{ "__OPINSTRING", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 16 */
{ "__OPINCLUDE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 17 */
{ "__OPNOT", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 18 */
{ "__OPAND", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 19 */
{ "__OPOR", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 20 */
{ "__OPARRAYINDEX", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 21 */
{ "__ENUMINDEX", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 22 */
{ "__ENUMBASE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 23 */
{ "__ENUMVALUE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 24 */
{ "__ENUMSTART", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 25 */
{ "__ENUMSKIP", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 26 */
{ "__ENUMSTOP", {HB_FS_MESSAGE}, {NULL}, NULL } /* 27 */
};
static HB_SYMB s___msgDestructor = { "__msgDestructor", {HB_FS_MESSAGE}, {NULL}, NULL };
static HB_SYMB s___msgOnError = { "__msgOnError", {HB_FS_MESSAGE}, {NULL}, NULL };
static HB_SYMB s___msgSetData = { "__msgSetData", {HB_FS_MESSAGE}, {hb___msgSetData}, NULL };
static HB_SYMB s___msgGetData = { "__msgGetData", {HB_FS_MESSAGE}, {hb___msgGetData}, NULL };
static HB_SYMB s___msgSetClsData = { "__msgSetClsData", {HB_FS_MESSAGE}, {hb___msgSetClsData}, NULL };
static HB_SYMB s___msgGetClsData = { "__msgGetClsData", {HB_FS_MESSAGE}, {hb___msgGetClsData}, NULL };
static HB_SYMB s___msgSetShrData = { "__msgSetShrData", {HB_FS_MESSAGE}, {hb___msgSetShrData}, NULL };
static HB_SYMB s___msgGetShrData = { "__msgGetShrData", {HB_FS_MESSAGE}, {hb___msgGetShrData}, NULL };
static HB_SYMB s___msgEvalInline = { "__msgEvalInline", {HB_FS_MESSAGE}, {hb___msgEvalInline}, NULL };
static HB_SYMB s___msgVirtual = { "__msgVirtual", {HB_FS_MESSAGE}, {hb___msgVirtual}, NULL };
static HB_SYMB s___msgSuper = { "__msgSuper", {HB_FS_MESSAGE}, {hb___msgSuper}, NULL };
static HB_SYMB s___msgRealClass = { "__msgRealClass", {HB_FS_MESSAGE}, {hb___msgRealClass}, NULL };
static HB_SYMB s___msgPerform = { "__msgPerform", {HB_FS_MESSAGE}, {hb___msgPerform}, NULL };
static HB_SYMB s___msgDelegate = { "__msgDelegate", {HB_FS_MESSAGE}, {hb___msgDelegate}, NULL };
static HB_SYMB s___msgNoMethod = { "__msgNoMethod", {HB_FS_MESSAGE}, {hb___msgNoMethod}, NULL };
static HB_SYMB s___msgScopeErr = { "__msgScopeErr", {HB_FS_MESSAGE}, {hb___msgScopeErr}, NULL };
static HB_SYMB s___msgTypeErr = { "__msgTypeErr", {HB_FS_MESSAGE}, {hb___msgTypeErr}, NULL };
static HB_SYMB s___msgNew = { "NEW", {HB_FS_MESSAGE}, {NULL}, NULL };
static HB_SYMB s___msgSymbol = { "SYMBOL", {HB_FS_MESSAGE}, {NULL}, NULL };
static HB_SYMB s___msgClassName = { "CLASSNAME", {HB_FS_MESSAGE}, {hb___msgClassName}, NULL };
static HB_SYMB s___msgClassH = { "CLASSH", {HB_FS_MESSAGE}, {hb___msgClassH}, NULL };
static HB_SYMB s___msgClassSel = { "CLASSSEL", {HB_FS_MESSAGE}, {hb___msgClassSel}, NULL };
static HB_SYMB s___msgExec = { "EXEC", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static HB_SYMB s___msgName = { "NAME", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
/*
static HB_SYMB s___msgClsParent = { "ISDERIVEDFROM", {HB_FS_MESSAGE}, {hb___msgClassParent},NULL };
static HB_SYMB s___msgClass = { "CLASS", {HB_FS_MESSAGE}, {hb___msgClass}, NULL };
*/
static HB_SYMB s___msgKeys = { "KEYS", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static HB_SYMB s___msgValues = { "VALUES", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
/* Default enumerator methods (FOR EACH) */
static HB_SYMB s___msgEnumIndex = { "__ENUMINDEX", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static HB_SYMB s___msgEnumBase = { "__ENUMBASE", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static HB_SYMB s___msgEnumKey = { "__ENUMKEY", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static HB_SYMB s___msgEnumValue = { "__ENUMVALUE", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
/* WITH OBJECT base value access/asign methods (:__withobject) */
static HB_SYMB s___msgWithObjectPush = { "__WITHOBJECT", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static HB_SYMB s___msgWithObjectPop = { "___WITHOBJECT", {HB_FS_MESSAGE}, {hb___msgNull}, NULL };
static PCLASS s_pClasses = NULL;
static USHORT s_uiClasses = 0;
/*
* Scalar classes' handles
*/
static USHORT s_uiArrayClass = 0;
static USHORT s_uiBlockClass = 0;
static USHORT s_uiCharacterClass = 0;
static USHORT s_uiDateClass = 0;
static USHORT s_uiHashClass = 0;
static USHORT s_uiLogicalClass = 0;
static USHORT s_uiNilClass = 0;
static USHORT s_uiNumericClass = 0;
static USHORT s_uiSymbolClass = 0;
static USHORT s_uiPointerClass = 0;
/* ================================================ */
#if 0
static USHORT hb_clsBucketPos( PHB_DYNS pMsg, USHORT uiMask )
{
/*
* we can use PHB_DYNS address as base for hash key.
* This value is perfectly unique and we do not need anything more
* but it's not continuous so we will have to add dynamic BUCKETSIZE
* modification to be 100% sure that we can resolve all symbol name
* conflicts (though even without it it's rather theoretical problem).
* [druzus]
*/
/* Safely divide it by 16 - it's minimum memory allocated for single
* HB_DYNS structure
*/
/*
return ( ( USHORT ) ( ( HB_PTRDIFF ) pMsg >> 4 ) & uiMask ) << BUCKETBITS;
*/
/* Using continuous symbol numbers we are 100% sure that we will cover
* the whole 16bit area and we will never have any problems until number
* of symbols is limited to 2^16. [druzus]
*/
return ( pMsg->uiSymNum & uiMask ) << BUCKETBITS;
}
#endif
/*
* hb_clsDictRealloc( PCLASS )
*
* Realloc (widen) class
*/
static BOOL hb_clsDictRealloc( PCLASS pClass )
{
ULONG ulNewHashKey, ulLimit, ul;
#ifdef HB_MSG_POOL
USHORT * puiMsgIdx;
#else
PMETHOD pNewMethods;
#endif
HB_TRACE(HB_TR_DEBUG, ("hb_clsDictRealloc(%p)", pClass));
ulNewHashKey = ( ULONG ) pClass->uiHashKey + 1;
ulLimit = ulNewHashKey << BUCKETBITS;
do
{
ulNewHashKey <<= 1;
if( ulNewHashKey > HASH_KEYMAX )
{
hb_errInternal( 6002, "Unable to realloc class message in __clsDictRealloc", NULL, NULL );
return FALSE;
}
#ifdef HB_MSG_POOL
puiMsgIdx = ( USHORT * ) hb_xgrab( ( ulNewHashKey << BUCKETBITS ) * sizeof( USHORT ) );
memset( puiMsgIdx, 0, ( ulNewHashKey << BUCKETBITS ) * sizeof( USHORT ) );
for( ul = 0; ul < ulLimit; ul++ )
{
USHORT uiMsg = pClass->puiMsgIdx[ ul ];
if( pClass->puiMsgIdx[ ul ] )
{
USHORT uiBucket = BUCKETSIZE;
USHORT * puiIdx = puiMsgIdx + hb_clsBucketPos(
pClass->pMethods[ uiMsg ].pMessage, ulNewHashKey - 1 );
do
{
if( * puiIdx == 0 ) /* this message position is empty */
{
* puiIdx = uiMsg;
break;
}
++puiIdx;
} while( --uiBucket );
/* Not enough go back to the beginning */
if( ! uiBucket )
{
hb_xfree( puiMsgIdx );
break;
}
}
}
}
while( ul < ulLimit );
pClass->uiHashKey = ( USHORT ) ( ulNewHashKey - 1 );
hb_xfree( pClass->puiMsgIdx );
pClass->puiMsgIdx = puiMsgIdx;
#else
pNewMethods = ( PMETHOD ) hb_xgrab( ( ulNewHashKey << BUCKETBITS ) * sizeof( METHOD ) );
memset( pNewMethods, 0, ( ulNewHashKey << BUCKETBITS ) * sizeof( METHOD ) );
for( ul = 0; ul < ulLimit; ul++ )
{
PHB_DYNS pMessage = ( PHB_DYNS ) pClass->pMethods[ ul ].pMessage;
if( pMessage )
{
PMETHOD pMethod = pNewMethods + hb_clsBucketPos( pMessage, ulNewHashKey - 1 );
USHORT uiBucket = BUCKETSIZE;
do
{
if( ! pMethod->pMessage ) /* this message position is empty */
{
memcpy( pMethod, pClass->pMethods + ul, sizeof( METHOD ) );
break;
}
++pMethod;
} while( --uiBucket );
/* Not enough go back to the beginning */
if( ! uiBucket )
{
hb_xfree( pNewMethods );
break;
}
}
}
}
while( ul < ulLimit );
pClass->uiHashKey = ( USHORT ) ( ulNewHashKey - 1 );
hb_xfree( pClass->pMethods );
pClass->pMethods = pNewMethods;
#endif
return TRUE;
}
static void hb_clsDictInit( PCLASS pClass, USHORT uiHashKey )
{
ULONG ulSize;
HB_TRACE(HB_TR_DEBUG, ("hb_clsDictInit(%p,%hu)", pClass, uiHashKey));
pClass->uiHashKey = uiHashKey;
#ifdef HB_MSG_POOL
ulSize = ( ( ( ULONG ) uiHashKey + 1 ) << BUCKETBITS ) * sizeof( USHORT );
pClass->puiMsgIdx = ( USHORT * ) hb_xgrab( ulSize );
memset( pClass->puiMsgIdx, 0, ulSize );
pClass->uiMethodCount = 1;
pClass->pMethods = ( PMETHOD ) hb_xgrab( sizeof( METHOD ) );
memset( pClass->pMethods, 0, sizeof( METHOD ) );
#else
ulSize = ( ( ( ULONG ) uiHashKey + 1 ) << BUCKETBITS ) * sizeof( METHOD );
pClass->pMethods = ( PMETHOD ) hb_xgrab( ulSize );
memset( pClass->pMethods, 0, ulSize );
#endif
}
static PMETHOD hb_clsFindMsg( PCLASS pClass, PHB_DYNS pMsg )
{
#ifdef HB_MSG_POOL
USHORT uiBucket, * puiMsgIdx;
HB_TRACE(HB_TR_DEBUG, ("hb_clsFindMsg(%p,%p)", pClass, pMsg));
puiMsgIdx = pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey );
uiBucket = BUCKETSIZE;
do
{
if( pClass->pMethods[ * puiMsgIdx ].pMessage == pMsg )
{
return &pClass->pMethods[ * puiMsgIdx ];
}
++puiMsgIdx;
}
while( --uiBucket );
#else
PMETHOD pMethod;
USHORT uiBucket;
HB_TRACE(HB_TR_DEBUG, ("hb_clsFindMsg(%p,%p)", pClass, pMsg));
pMethod = pClass->pMethods + hb_clsBucketPos( pMsg, pClass->uiHashKey );
uiBucket = BUCKETSIZE;
do
{
if( pMethod->pMessage == pMsg )
return pMethod;
++pMethod;
}
while( --uiBucket );
#endif
return NULL;
}
static PMETHOD hb_clsAllocMsg( PCLASS pClass, PHB_DYNS pMsg )
{
HB_TRACE(HB_TR_DEBUG, ("hb_clsAllocMsg(%p,%p)", pClass, pMsg));
do
{
#ifdef HB_MSG_POOL
USHORT uiBucket = BUCKETSIZE, * puiMsgIdx = pClass->puiMsgIdx +
hb_clsBucketPos( pMsg, pClass->uiHashKey );
do
{
if( * puiMsgIdx == 0 )
{
pClass->pMethods = ( PMETHOD ) hb_xrealloc( pClass->pMethods,
sizeof( METHOD ) * ( pClass->uiMethodCount + 1 ) );
memset( &pClass->pMethods[ pClass->uiMethodCount ], 0, sizeof( METHOD ) );
* puiMsgIdx = pClass->uiMethodCount++;
return &pClass->pMethods[ * puiMsgIdx ];
}
else if( pClass->pMethods[ * puiMsgIdx ].pMessage == pMsg )
return &pClass->pMethods[ * puiMsgIdx ];
++puiMsgIdx;
}
while( --uiBucket );
#else
PMETHOD pMethod = pClass->pMethods + hb_clsBucketPos( pMsg, pClass->uiHashKey );
USHORT uiBucket = BUCKETSIZE;
do
{
if( ! pMethod->pMessage || pMethod->pMessage == pMsg )
return pMethod;
++pMethod;
}
while( --uiBucket );
#endif
}
while( hb_clsDictRealloc( pClass ) );
return NULL;
}
static BOOL hb_clsCanClearMethod( PMETHOD pMethod, BOOL fError )
{
HB_SYMBOL_UNUSED( pMethod );
HB_SYMBOL_UNUSED( fError );
#if 0
if( pMethod->pFuncSym == &s___msgSuper )
{
if( fError )
hb_errRT_BASE( EG_ARG, 3000, "Cannot delete supercast messages", &hb_errFuncName, 0 );
return FALSE;
}
#endif
return TRUE;
}
static void hb_clsFreeMsg( PCLASS pClass, PHB_DYNS pMsg )
{
#ifdef HB_MSG_POOL
USHORT uiBucket, * puiMsgIdx;
HB_TRACE(HB_TR_DEBUG, ("hb_clsFreeMsg(%p,%p)", pClass, pMsg));
puiMsgIdx = pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey );
uiBucket = BUCKETSIZE;
do
{
if( * puiMsgIdx && pClass->pMethods[ * puiMsgIdx ].pMessage == pMsg )
{
if( hb_clsCanClearMethod( &pClass->pMethods[ * puiMsgIdx ], TRUE ) )
{
memset( &pClass->pMethods[ * puiMsgIdx ], 0, sizeof( METHOD ) );
* puiMsgIdx = 0;
pClass->uiMethods--; /* Decrease number of messages */
}
return;
}
++puiMsgIdx;
}
while( --uiBucket );
#else
PMETHOD pMethod;
USHORT uiBucket;
HB_TRACE(HB_TR_DEBUG, ("hb_clsFreeMsg(%p,%p)", pClass, pMsg));
pMethod = pClass->pMethods + hb_clsBucketPos( pMsg, pClass->uiHashKey );
uiBucket = BUCKETSIZE;
do
{
if( pMethod->pMessage == pMsg )
{
if( hb_clsCanClearMethod( pMethod, TRUE ) )
{
/* Move messages */
while( --uiBucket )
{
memcpy( pMethod, pMethod + 1, sizeof( METHOD ) );
pMethod++;
}
memset( pMethod, 0, sizeof( METHOD ) );
pClass->uiMethods--; /* Decrease number of messages */
}
return;
}
++pMethod;
}
while( --uiBucket );
#endif
}
static BOOL hb_clsHasParent( PCLASS pClass, PHB_DYNS pParentSym )
{
PMETHOD pMethod = hb_clsFindMsg( pClass, pParentSym );
return pMethod && pMethod->pFuncSym == &s___msgSuper;
}
static USHORT hb_clsParentInstanceOffset( PCLASS pClass, PHB_DYNS pParentSym )
{
PMETHOD pMethod = hb_clsFindMsg( pClass, pParentSym );
return ( pMethod && pMethod->pFuncSym == &s___msgSuper ) ? pMethod->uiOffset : 0;
}
static USHORT hb_clsAddInitValue( PCLASS pClass, PHB_ITEM pItem,
USHORT uiType, USHORT uiData,
USHORT uiOffset, USHORT uiSprClass )
{
PINITDATA pInitData;
HB_TRACE(HB_TR_DEBUG, ("hb_clsAddInitValue(%p,%p,%hu,%hu,%hu,%hu)", pClass, pItem, uiType, uiData, uiOffset, uiSprClass));
if( ! pItem || HB_IS_NIL( pItem ) )
return 0;
if( ! pClass->uiInitDatas )
{
pClass->pInitData = ( PINITDATA ) hb_xgrab( sizeof( INITDATA ) );
pInitData = pClass->pInitData + pClass->uiInitDatas++;
}
else
{
USHORT ui = pClass->uiInitDatas;
pInitData = pClass->pInitData;
do
{
if( pInitData->uiType == uiType &&
pInitData->uiData + pInitData->uiOffset == uiData + uiOffset )
{
hb_itemRelease( pInitData->pInitValue );
break;
}
++pInitData;
}
while( --ui );
if( ui == 0 )
{
pClass->pInitData = ( PINITDATA ) hb_xrealloc( pClass->pInitData,
( ULONG ) ( pClass->uiInitDatas + 1 ) * sizeof( INITDATA ) );
pInitData = pClass->pInitData + pClass->uiInitDatas++;
}
}
pInitData->pInitValue = hb_itemClone( pItem );
pInitData->uiType = uiType;
pInitData->uiData = uiData;
pInitData->uiOffset = uiOffset;
pInitData->uiSprClass = uiSprClass;
return pClass->uiInitDatas;
}
static USHORT hb_clsFindRealClassDataOffset( PMETHOD pMethod )
{
PMETHOD pRealMth;
HB_TRACE(HB_TR_DEBUG, ("hb_clsFindRealClassDataOffset(%p)", pMethod));
pRealMth = hb_clsFindMsg( &s_pClasses[ pMethod->uiSprClass ],
pMethod->pMessage );
if( pRealMth && pRealMth->uiSprClass == pMethod->uiSprClass &&
( pRealMth->pFuncSym == &s___msgSetClsData ||
pRealMth->pFuncSym == &s___msgGetClsData ) )
{
return pRealMth->uiData;
}
return 0;
}
static USHORT hb_clsFindClassDataOffset( PCLASS pClass, PMETHOD pNewMethod )
{
USHORT uiData;
HB_TRACE(HB_TR_DEBUG, ("hb_clsFindClassDataOffset(%p,%p)", pClass, pNewMethod));
uiData = hb_clsFindRealClassDataOffset( pNewMethod );
if( uiData )
{
ULONG ulLimit = hb_clsMthNum( pClass );
PMETHOD pMethod = pClass->pMethods;
do
{
if( pMethod->pMessage && pMethod != pNewMethod &&
pMethod->uiSprClass == pNewMethod->uiSprClass &&
( pMethod->pFuncSym == &s___msgSetClsData ||
pMethod->pFuncSym == &s___msgGetClsData ) &&
uiData == hb_clsFindRealClassDataOffset( pMethod ) )
{
return pMethod->uiData;
}
++pMethod;
}
while( --ulLimit );
}
return 0;
}
static BOOL hb_clsUpdateHiddenMessages( PMETHOD pSrcMethod, PMETHOD pDstMethod,
PCLASS pDstClass )
{
PMETHOD pNewMethod = pSrcMethod;
HB_TRACE(HB_TR_DEBUG, ("hb_clsUpdateHiddenMessages(%p,%p,%p)", pSrcMethod, pDstMethod, pDstClass));
if( ! pDstMethod->pMessage ||
( hb_clsCanClearMethod( pDstMethod, FALSE ) &&
pDstMethod->uiPrevCls != pDstMethod->uiSprClass &&
( pDstMethod->uiScope & HB_OO_CLSTP_HIDDEN ) &&
( pDstMethod->uiScope & HB_OO_CLSTP_NONVIRTUAL ) ) )
{
while( pNewMethod &&
pNewMethod->uiPrevCls != pNewMethod->uiSprClass &&
( pNewMethod->uiScope & HB_OO_CLSTP_HIDDEN ) &&
( pNewMethod->uiScope & HB_OO_CLSTP_NONVIRTUAL ) )
{
pNewMethod = hb_clsFindMsg( &s_pClasses[ pNewMethod->uiPrevCls ],
pNewMethod->pMessage );
}
if( pNewMethod && pNewMethod != pSrcMethod &&
!( pNewMethod->uiScope & HB_OO_CLSTP_HIDDEN ) &&
hb_clsCanClearMethod( pDstMethod, FALSE ) )
{
USHORT uiPrevCls = pDstMethod->uiPrevCls,
uiPrevMth = pDstMethod->uiPrevMth;
memcpy( pDstMethod, pNewMethod, sizeof( METHOD ) );
pDstMethod->uiPrevCls = uiPrevCls;
pDstMethod->uiPrevMth = uiPrevMth;
pDstMethod->uiScope |= HB_OO_CLSTP_OVERLOADED | HB_OO_CLSTP_SUPER;
if( pDstMethod->pFuncSym == &s___msgSetData ||
pDstMethod->pFuncSym == &s___msgGetData )
{
pDstMethod->uiOffset = hb_clsParentInstanceOffset( pDstClass,
s_pClasses[ pDstMethod->uiSprClass ].pClassSym );
}
else if( pDstMethod->pFuncSym == &s___msgSetClsData ||
pDstMethod->pFuncSym == &s___msgGetClsData )
{
PCLASS pSrcClass = &s_pClasses[ pDstMethod->uiSprClass ];
USHORT uiData;
uiData = hb_clsFindClassDataOffset( pDstClass, pDstMethod );
if( uiData == 0 )
{
uiData = ( USHORT ) hb_arrayLen( pDstClass->pClassDatas ) + 1;
hb_arraySize( pDstClass->pClassDatas, uiData );
}
if( pDstMethod->uiOffset )
{
pDstMethod->uiOffset = hb_clsAddInitValue( pDstClass,
pSrcClass->pInitData[ pDstMethod->uiOffset - 1 ].pInitValue,
HB_OO_MSG_CLASSDATA, uiData, 0, pDstMethod->uiSprClass );
}
pDstMethod->uiData = uiData;
}
return TRUE;
}
}
return FALSE;
}
static void hb_clsCopyClass( PCLASS pClsDst, PCLASS pClsSrc )
{
PMETHOD pMethod;
ULONG ulLimit;
HB_TRACE(HB_TR_DEBUG, ("hb_clsCopyClass(%p,%p)", pClsDst, pClsSrc));
hb_clsDictInit( pClsDst, pClsSrc->uiHashKey );
pClsDst->fHasOnError = pClsSrc->fHasOnError;
pClsDst->fHasDestructor = pClsSrc->fHasDestructor;
/* CLASS DATA Not Shared ( new array, new value ) */
pClsDst->pClassDatas = hb_arrayClone( pClsSrc->pClassDatas );
/* do not copy shared data array - just simply create new one */
pClsDst->pSharedDatas = hb_itemArrayNew( 0 );
pClsDst->pInlines = hb_arrayClone( pClsSrc->pInlines );
pClsDst->uiDatas = pClsSrc->uiDatas;
pClsDst->ulOpFlags = pClsSrc->ulOpFlags;
if( pClsSrc->uiInitDatas )
{
ULONG ulSize = ( ULONG ) pClsSrc->uiInitDatas * sizeof( INITDATA );
USHORT uiData;
pClsDst->uiInitDatas = pClsSrc->uiInitDatas;
pClsDst->pInitData = ( PINITDATA ) hb_xgrab( ulSize );
memcpy( pClsDst->pInitData, pClsSrc->pInitData, ulSize );
for( uiData = 0; uiData < pClsDst->uiInitDatas; ++uiData )
{
if( pClsDst->pInitData[ uiData ].uiType == HB_OO_MSG_INITIALIZED )
pClsDst->pInitData[ uiData ].uiType = HB_OO_MSG_CLASSDATA;
pClsDst->pInitData[ uiData ].pInitValue =
hb_itemNew( pClsDst->pInitData[ uiData ].pInitValue );
}
}
ulLimit = hb_clsMthNum( pClsSrc );
#ifdef HB_MSG_POOL
memcpy( pClsDst->puiMsgIdx, pClsSrc->puiMsgIdx,
( ( ( ULONG ) pClsSrc->uiHashKey + 1 ) << BUCKETBITS ) * sizeof( USHORT ) );
pClsDst->uiMethodCount = pClsSrc->uiMethodCount;
pClsDst->pMethods = ( PMETHOD ) hb_xrealloc( pClsDst->pMethods,
ulLimit * sizeof( METHOD ) );
#endif
memcpy( pClsDst->pMethods, pClsSrc->pMethods, ulLimit * sizeof( METHOD ) );
pClsDst->uiMethods = pClsSrc->uiMethods;
pMethod = pClsDst->pMethods;
do
{
if( pMethod->pMessage )
{
hb_clsUpdateHiddenMessages( pMethod, pMethod, pClsDst );
pMethod->uiScope |= HB_OO_CLSTP_SUPER;
}
++pMethod;
}
while( --ulLimit );
}
static BOOL hb_clsIsFriendSymbol( PCLASS pClass, PHB_SYMB pSym )
{
USHORT uiCount;
HB_TRACE(HB_TR_DEBUG, ("hb_clsIsFriendSymbol(%p,%p)", pClass, pSym));
if( pSym >= pClass->pFriendModule &&
pSym < pClass->pFriendModule + pClass->uiFriendModule )
return TRUE;
for( uiCount = 0; uiCount < pClass->uiFriendSyms; ++uiCount )
{
if( pClass->pFriendSyms[ uiCount ] == pSym )
return TRUE;
}
return FALSE;
}
static void hb_clsAddFriendSymbol( PCLASS pClass, PHB_SYMB pSym )
{
HB_TRACE(HB_TR_DEBUG, ("hb_clsAddFriendSymbol(%p,%p)", pClass, pSym));
if( ! hb_clsIsFriendSymbol( pClass, pSym ) )
{
if( pClass->uiFriendSyms == 0 )
{
pClass->pFriendSyms = ( PHB_SYMB * ) hb_xgrab( sizeof( PHB_SYMB ) );
pClass->pFriendSyms[ 0 ] = pSym;
pClass->uiFriendSyms++;
}
else
{
pClass->pFriendSyms = ( PHB_SYMB * ) hb_xrealloc( pClass->pFriendSyms,
( pClass->uiFriendSyms + 1 ) * sizeof( PHB_SYMB ) );
pClass->pFriendSyms[ pClass->uiFriendSyms++ ] = pSym;
}
}
}
/*
* initialize Classy/OO system at HVM startup
*/
void hb_clsInit( void )
{
PHB_SYMB pOpSym;
USHORT uiOperator;
HB_TRACE(HB_TR_DEBUG, ("hb_clsInit()"));
for( uiOperator = 0, pOpSym = s_opSymbols; uiOperator <= HB_OO_MAX_OPERATOR;
++uiOperator, ++pOpSym )
{
pOpSym->pDynSym = hb_dynsymGetCase( pOpSym->szName );
}
s___msgDestructor.pDynSym = hb_dynsymGetCase( s___msgDestructor.szName );
s___msgOnError.pDynSym = hb_dynsymGetCase( s___msgOnError.szName );
s___msgClassName.pDynSym = hb_dynsymGetCase( s___msgClassName.szName ); /* Standard messages */
s___msgClassH.pDynSym = hb_dynsymGetCase( s___msgClassH.szName ); /* Not present in classdef. */
s___msgClassSel.pDynSym = hb_dynsymGetCase( s___msgClassSel.szName );
s___msgExec.pDynSym = hb_dynsymGetCase( s___msgExec.szName );
s___msgName.pDynSym = hb_dynsymGetCase( s___msgName.szName );
s___msgNew.pDynSym = hb_dynsymGetCase( s___msgNew.szName );
s___msgSymbol.pDynSym = hb_dynsymGetCase( s___msgSymbol.szName );
s___msgKeys.pDynSym = hb_dynsymGetCase( s___msgKeys.szName );
s___msgValues.pDynSym = hb_dynsymGetCase( s___msgValues.szName );
/*
s___msgClsParent.pDynSym = hb_dynsymGetCase( s___msgClsParent.szName );
s___msgClass.pDynSym = hb_dynsymGetCase( s___msgClass.szName );
*/
s___msgEnumIndex.pDynSym = hb_dynsymGetCase( s___msgEnumIndex.szName );
s___msgEnumBase.pDynSym = hb_dynsymGetCase( s___msgEnumBase.szName );
s___msgEnumKey.pDynSym = hb_dynsymGetCase( s___msgEnumKey.szName );
s___msgEnumValue.pDynSym = hb_dynsymGetCase( s___msgEnumValue.szName );
s___msgWithObjectPush.pDynSym = hb_dynsymGetCase( s___msgWithObjectPush.szName );
s___msgWithObjectPop.pDynSym = hb_dynsymGetCase( s___msgWithObjectPop.szName );
}
/*
* initialize Classy/OO system .prg functions
*/
void hb_clsDoInit( void )
{
static const char * s_pszFuncNames[] =
{ "HBARRAY", "HBBLOCK", "HBCHARACTER", "HBDATE",
"HBHASH", "HBLOGICAL", "HBNIL", "HBNUMERIC",
"HBSYMBOL", "HBPOINTER" };
static USHORT * s_puiHandles[] =
{ &s_uiArrayClass, &s_uiBlockClass, &s_uiCharacterClass, &s_uiDateClass,
&s_uiHashClass, &s_uiLogicalClass, &s_uiNilClass, &s_uiNumericClass,
&s_uiSymbolClass, &s_uiPointerClass };
int i;
HB_TRACE(HB_TR_DEBUG, ("hb_clsDoInit()"));
for( i = 0; i < ( int ) ( sizeof( s_puiHandles ) / sizeof( USHORT * ) ); ++i )
{
PHB_DYNS pFuncSym = hb_dynsymFindName( s_pszFuncNames[i] );
if( pFuncSym && hb_dynsymIsFunction( pFuncSym ) )
{
PHB_ITEM pObject;
hb_vmPushDynSym( pFuncSym );
hb_vmPushNil();
hb_vmDo( 0 );
pObject = hb_stackReturnItem();
if( HB_IS_OBJECT( pObject ) )
*( s_puiHandles[i] ) = pObject->item.asArray.value->uiClass;
}
}
}
/*
* hb_clsRelease( <pClass> )
*
* Release a class from memory
*/
static void hb_clsRelease( PCLASS pClass )
{
HB_TRACE(HB_TR_DEBUG, ("hb_clsRelease(%p)", pClass));
if( pClass->uiInitDatas )
{
USHORT ui = pClass->uiInitDatas;
PINITDATA pInitData = pClass->pInitData;
do
{
hb_itemRelease( pInitData->pInitValue );
++pInitData;
}
while( --ui );
hb_xfree( pClass->pInitData );
}
if( pClass->szName )
hb_xfree( pClass->szName );
if( pClass->pMethods )
hb_xfree( pClass->pMethods );
if( pClass->uiFriendSyms )
hb_xfree( pClass->pFriendSyms );
#ifdef HB_MSG_POOL
if( pClass->puiMsgIdx )
hb_xfree( pClass->puiMsgIdx );
#endif
if( pClass->pClassDatas )
hb_itemRelease( pClass->pClassDatas );
if( pClass->pSharedDatas )
hb_itemRelease( pClass->pSharedDatas );
if( pClass->pInlines )
hb_itemRelease( pClass->pInlines );
}
/*
* hb_clsReleaseAll()
*
* Release all classes
*/
void hb_clsReleaseAll( void )
{
HB_TRACE(HB_TR_DEBUG, ("hb_clsReleaseAll()"));
if( s_uiClasses )
{
USHORT uiClass = s_uiClasses;
/* It blocks destructor execution - don't move. [druzus] */
s_uiClasses = 0;
do
{
hb_clsRelease( &s_pClasses[ uiClass ] );
}
while( --uiClass );
hb_xfree( s_pClasses );
s_pClasses = NULL;
}
}
/* Mark all internal data as used so it will not be released by the
* garbage collector
*/
void hb_clsIsClassRef( void )
{
/*
* All internal items are allocated with hb_itemNew()
* GC knows them and scan itself so it's not necessary
* to repeat scanning here [druzus].
*/
#if 0
USHORT uiClass = s_uiClasses;
PCLASS pClass = s_pClasses + 1;
HB_TRACE(HB_TR_DEBUG, ("hb_clsIsClassRef()"));
while( uiClass-- )
{
if( pClass->pInlines )
hb_gcItemRef( pClass->pInlines );
if( pClass->pClassDatas )
hb_gcItemRef( pClass->pClassDatas );
if( pClass->pSharedDatas )
hb_gcItemRef( pClass->pSharedDatas );
if( pClass->uiInitDatas )
{
USHORT ui = pClass->uiInitDatas;
PINITDATA pInitData = pClass->pInitData;
do
{
if( HB_IS_GCITEM( pInitData->pInitValue ) )
hb_gcItemRef( pInitData->pInitValue );
++pInitData;
}
while( --ui );
}
++pClass;
}
#endif
}
HB_EXPORT BOOL hb_clsIsParent( USHORT uiClass, const char * szParentName )
{
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ uiClass ];
if( strcmp( pClass->szName, szParentName ) == 0 )
return TRUE;
else
{
PHB_DYNS pMsg = hb_dynsymFindName( szParentName );
if( pMsg )
return hb_clsHasParent( &s_pClasses[ uiClass ], pMsg );
}
}
return FALSE;
}
HB_EXPORT USHORT hb_objGetClass( PHB_ITEM pItem )
{
if( pItem && HB_IS_ARRAY( pItem ) )
return pItem->item.asArray.value->uiClass;
else
return 0;
}
/* get object class handle using class name and class function name */
HB_EXPORT USHORT hb_objSetClass( PHB_ITEM pItem, const char * szClass, const char * szFunc )
{
USHORT uiClass = 0;
if( pItem && HB_IS_ARRAY( pItem ) &&
pItem->item.asArray.value->uiClass == 0 )
{
uiClass = pItem->item.asArray.value->uiClass =
hb_clsFindClass( szClass, szFunc );
}
return uiClass;
}
/* ================================================ */
/*
* Get the class handle
*/
static USHORT hb_objGetClassH( PHB_ITEM pObject )
{
HB_TRACE(HB_TR_DEBUG, ("hb_objGetClassH(%p)", pObject));
if( HB_IS_ARRAY( pObject ) )
{
if( pObject->item.asArray.value->uiClass != 0 )
return pObject->item.asArray.value->uiClass;
else
return s_uiArrayClass;
}
/* built in types */
else if( HB_IS_NIL( pObject ) )
return s_uiNilClass;
else if( HB_IS_STRING( pObject ) )
return s_uiCharacterClass;
else if( HB_IS_NUMERIC( pObject ) )
return s_uiNumericClass;
else if( HB_IS_DATE( pObject ) )
return s_uiDateClass;
else if( HB_IS_LOGICAL( pObject ) )
return s_uiLogicalClass;
else if( HB_IS_BLOCK( pObject ) )
return s_uiBlockClass;
else if( HB_IS_HASH( pObject ) )
return s_uiHashClass;
else if( HB_IS_POINTER( pObject ) )
return s_uiPointerClass;
else if( HB_IS_SYMBOL( pObject ) )
return s_uiSymbolClass;
return 0;
}
/*
* Get the class name of an object
*/
HB_EXPORT const char * hb_objGetClsName( PHB_ITEM pObject )
{
HB_TRACE(HB_TR_DEBUG, ("hb_objGetClsName(%p)", pObject));
if( HB_IS_ARRAY( pObject ) )
{
if( pObject->item.asArray.value->uiClass != 0 )
return s_pClasses[ pObject->item.asArray.value->uiClass ].szName;
else
return "ARRAY";
}
/* built in types */
else if( HB_IS_NIL( pObject ) )
return "NIL";
else if( HB_IS_STRING( pObject ) )
return "CHARACTER";
else if( HB_IS_NUMERIC( pObject ) )
return "NUMERIC";
else if( HB_IS_DATE( pObject ) )
return "DATE";
else if( HB_IS_LOGICAL( pObject ) )
return "LOGICAL";
else if( HB_IS_BLOCK( pObject ) )
return "BLOCK";
else if( HB_IS_HASH( pObject ) )
return "HASH";
else if( HB_IS_POINTER( pObject ) )
return "POINTER";
else if( HB_IS_SYMBOL( pObject ) )
return "SYMBOL";
else
return "UNKNOWN";
}
HB_EXPORT const char * hb_clsName( USHORT uiClass )
{
if( uiClass && uiClass <= s_uiClasses )
return s_pClasses[ uiClass ].szName;
else
return NULL;
}
HB_EXPORT const char * hb_clsFuncName( USHORT uiClass )
{
if( uiClass && uiClass <= s_uiClasses )
return s_pClasses[ uiClass ].pClassFuncSym ?
s_pClasses[ uiClass ].pClassFuncSym->szName :
"";
else
return NULL;
}
HB_EXPORT USHORT hb_clsFindClass( const char * szClass, const char * szFunc )
{
USHORT uiClass;
for( uiClass = 1; uiClass <= s_uiClasses; uiClass++ )
{
if( strcmp( szClass, s_pClasses[ uiClass ].szName ) == 0 &&
( !szFunc || ( !s_pClasses[ uiClass ].pClassFuncSym ? !*szFunc :
strcmp( szFunc, s_pClasses[ uiClass ].pClassFuncSym->szName ) == 0 ) ) )
{
return uiClass;
}
}
return 0;
}
static USHORT hb_clsFindClassByFunc( PHB_SYMB pClassFuncSym )
{
USHORT uiClass;
for( uiClass = 1; uiClass <= s_uiClasses; uiClass++ )
{
if( s_pClasses[ uiClass ].pClassFuncSym == pClassFuncSym )
{
return uiClass;
}
}
return 0;
}
/*
* Get the real class name of an object message
* Will return the class name from wich the message is inherited in case
* of inheritance.
*/
HB_EXPORT const char * hb_objGetRealClsName( PHB_ITEM pObject, const char * szName )
{
USHORT uiClass;
HB_TRACE(HB_TR_DEBUG, ("hb_objGetrealClsName(%p,%s)", pObject, szName));
uiClass = hb_objGetClassH( pObject );
if( uiClass && uiClass <= uiClass )
{
PHB_DYNS pMsg = hb_dynsymFindName( szName );
if( pMsg )
{
PMETHOD pMethod = hb_clsFindMsg( &s_pClasses[ uiClass ], pMsg );
if( pMethod )
uiClass = pMethod->uiSprClass;
}
if( uiClass && uiClass <= s_uiClasses )
return s_pClasses[ uiClass ].szName;
}
return hb_objGetClsName( pObject );
}
#if defined( HB_CLASSY_BLOCK_SCOPE )
static LONG hb_clsSenderOffset( void )
{
LONG lOffset = hb_stackBaseProcOffset( 1 );
if( lOffset > 0 )
{
/* Is it inline method? */
if( lOffset > 0 && HB_IS_BLOCK( hb_stackItem( lOffset + 1 ) ) &&
( hb_stackItem( lOffset )->item.asSymbol.value == &hb_symEval ||
hb_stackItem( lOffset )->item.asSymbol.value->pDynSym ==
hb_symEval.pDynSym ) )
{
lOffset = hb_stackItem( lOffset )->item.asSymbol.stackstate->lBaseItem;
/* I do not like it but Class(y) makes sth like that. [druzus] */
while( lOffset > 0 &&
hb_stackItem( lOffset )->item.asSymbol.stackstate->uiClass == 0 )
lOffset = hb_stackItem( lOffset )->item.asSymbol.stackstate->lBaseItem;
}
return lOffset;
}
return -1;
}
#endif
#if 0
static USHORT hb_clsSenderClasss( void )
{
LONG lOffset = hb_clsSenderOffset();
if( lOffset > 0 )
return hb_stackItem( lOffset )->item.asSymbol.stackstate->uiClass;
else
return 0;
}
#endif
static USHORT hb_clsSenderMethodClasss( void )
{
LONG lOffset = hb_clsSenderOffset();
if( lOffset > 0 )
{
PHB_STACK_STATE pStack = hb_stackItem( lOffset )->item.asSymbol.stackstate;
if( pStack->uiClass )
return ( s_pClasses[ pStack->uiClass ].pMethods +
pStack->uiMethod )->uiSprClass;
}
return 0;
}
static PHB_SYMB hb_clsSenderSymbol( void )
{
PHB_SYMB pSym = NULL;
LONG lOffset = hb_clsSenderOffset();
if( lOffset > 0 )
{
pSym = hb_stackItem( lOffset )->item.asSymbol.value;
if( pSym == &hb_symEval || pSym->pDynSym == hb_symEval.pDynSym )
{
PHB_ITEM pBlock = hb_stackItem( lOffset + 1 );
if( HB_IS_BLOCK( pBlock ) )
pSym = pBlock->item.asBlock.value->pDefSymb;
}
}
return hb_vmGetRealFuncSym( pSym );
}
static USHORT hb_clsSenderObjectClasss( void )
{
LONG lOffset = hb_clsSenderOffset();
if( lOffset > 0 )
{
PHB_ITEM pSender = hb_stackItem( lOffset + 1 );
if( HB_IS_ARRAY( pSender ) )
return pSender->item.asArray.value->uiClass;
}
return 0;
}
static PHB_SYMB hb_clsValidScope( PMETHOD pMethod, PHB_STACK_STATE pStack )
{
if( pMethod->uiScope & ( HB_OO_CLSTP_HIDDEN | HB_OO_CLSTP_PROTECTED |
HB_OO_CLSTP_OVERLOADED ) )
{
USHORT uiSenderClass = hb_clsSenderMethodClasss();
if( uiSenderClass )
{
if( uiSenderClass == pMethod->uiSprClass )
return pMethod->pFuncSym;
/*
* Warning!!! Friends cannot access overloaded non virtual methods.
* This feature is available _ONLY_ for real class members, [druzus]
*/
if( pMethod->uiScope & HB_OO_CLSTP_OVERLOADED )
{
PCLASS pClass = &s_pClasses[ uiSenderClass ];
PMETHOD pHiddenMthd = hb_clsFindMsg( pClass, pMethod->pMessage );
if( pHiddenMthd && ( pHiddenMthd->uiScope & HB_OO_CLSTP_NONVIRTUAL ) &&
pHiddenMthd->uiSprClass == uiSenderClass )
{
pStack->uiClass = uiSenderClass;
pStack->uiMethod = ( USHORT ) ( pHiddenMthd - pClass->pMethods );
return pHiddenMthd->pFuncSym;
}
}
if( pMethod->uiScope & HB_OO_CLSTP_HIDDEN )
{
if( ! hb_clsIsFriendSymbol( &s_pClasses[ pMethod->uiSprClass ],
s_pClasses[ uiSenderClass ].pClassFuncSym ) )
return &s___msgScopeErr;
}
else if( pMethod->uiScope & HB_OO_CLSTP_PROTECTED &&
! hb_clsHasParent( &s_pClasses[ pStack->uiClass ],
s_pClasses[ uiSenderClass ].pClassSym ) &&
! hb_clsHasParent( &s_pClasses[ uiSenderClass ],
s_pClasses[ pStack->uiClass ].pClassSym ) &&
! hb_clsIsFriendSymbol( &s_pClasses[ pMethod->uiSprClass ],
s_pClasses[ uiSenderClass ].pClassFuncSym ) &&
( pStack->uiClass == pMethod->uiSprClass ||
! hb_clsIsFriendSymbol( &s_pClasses[ pStack->uiClass ],
s_pClasses[ uiSenderClass ].pClassFuncSym ) ) )
return &s___msgScopeErr;
}
else if( pMethod->uiScope & ( HB_OO_CLSTP_HIDDEN | HB_OO_CLSTP_PROTECTED ) )
{
PHB_SYMB pSym = hb_clsSenderSymbol();
if( ! hb_clsIsFriendSymbol( &s_pClasses[ pMethod->uiSprClass ], pSym ) )
{
if( ( pMethod->uiScope & HB_OO_CLSTP_HIDDEN ) ||
! hb_clsIsFriendSymbol( &s_pClasses[ pStack->uiClass ], pSym ) )
return &s___msgScopeErr;
}
}
}
return pMethod->pFuncSym;
}
static PHB_SYMB hb_clsScalarMethod( PCLASS pClass, PHB_DYNS pMsg,
PHB_STACK_STATE pStack )
{
PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg );
if( pStack )
{
pStack->uiClass = ( USHORT ) ( pClass - s_pClasses );
if( pMethod )
{
pStack->uiMethod = ( USHORT ) ( pMethod - pClass->pMethods );
return hb_clsValidScope( pMethod, pStack );
}
}
else if( pMethod )
return pMethod->pFuncSym;
return NULL;
}
static void hb_clsMakeSuperObject( PHB_ITEM pDest, PHB_ITEM pObject,
USHORT uiSuperClass )
{
HB_TRACE(HB_TR_DEBUG, ("hb_clsMakeSuperObject(%p, %p, %hu)", pDest, pObject, uiSuperClass));
/* create a fake object array */
hb_arrayNew( pDest, 1 );
/* Now save the Self object as the 1st elem. */
hb_arraySet( pDest, 1, pObject );
/* And transform it into a fake object */
/* backup of actual handel */
pDest->item.asArray.value->uiPrevCls = hb_objGetClassH( pObject );
/* superclass handel casting */
pDest->item.asArray.value->uiClass = uiSuperClass;
}
/*
* <pFuncSym> = hb_objGetMethod( <pObject>, <pMessage>, <pStackState> )
*
* Internal function to the function pointer of a message of an object
*/
PHB_SYMB hb_objGetMethod( PHB_ITEM pObject, PHB_SYMB pMessage,
PHB_STACK_STATE pStack )
{
PCLASS pClass = NULL;
PHB_DYNS pMsg;
HB_TRACE(HB_TR_DEBUG, ("hb_objGetMethod(%p, %p, %p)", pObject, pMessage, pStack));
pMsg = pMessage->pDynSym;
if( HB_IS_ARRAY( pObject ) )
{
if( pObject->item.asArray.value->uiClass )
{
pClass = &s_pClasses[ pObject->item.asArray.value->uiClass ];
if( pStack )
{
pStack->uiClass = pObject->item.asArray.value->uiClass;
if( pObject->item.asArray.value->uiPrevCls )
{
if( pObject->item.asArray.value->ulLen )
{
/*
* Copy real object - do not move! the same super casted
* object can be used more then once and we mustn't
* destroy it. We can safely use hb_stackReturnItem() here.
*/
hb_itemCopy( hb_stackReturnItem(), pObject->item.asArray.value->pItems );
/* move real object back to the stack */
hb_itemMove( pObject, hb_stackReturnItem() );
}
else
/* Someone tried to manipulate with supercast array */
hb_itemClear( pObject );
}
#ifdef HB_MSG_POOL
{
USHORT uiBucket = BUCKETSIZE, * puiMsgIdx =
pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey );
do
{
PMETHOD pMethod = &pClass->pMethods[ * puiMsgIdx ];
if( pMethod->pMessage == pMsg )
{
pStack->uiMethod = * puiMsgIdx;
return hb_clsValidScope( pMethod, pStack );
}
++puiMsgIdx;
}
while( --uiBucket );
}
#else
{
PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg );
if( pMethod )
{
pStack->uiMethod = ( USHORT ) ( pMethod - pClass->pMethods );
return hb_clsValidScope( pMethod, pStack );
}
}
#endif
}
else
{
PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg );
if( pMethod )
return pMethod->pFuncSym;
}
}
else if( s_uiArrayClass )
{
pClass = &s_pClasses[ s_uiArrayClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_BLOCK( pObject ) )
{
if( pMsg == hb_symEval.pDynSym )
return &hb_symEval;
else if( s_uiBlockClass )
{
pClass = &s_pClasses[ s_uiBlockClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_BYREF( pObject ) )
{
if( pStack )
{
/* method of enumerator variable from FOR EACH statement
*/
PHB_ITEM pEnum = hb_itemUnRefOnce( pObject );
if( HB_IS_ENUM( pEnum ) )
{
/*
* Do actions here - we already have unreferenced pEnum so
* it will be a little bit faster but in the future it's
* possible that I'll move it to separate function when
* I'll add enumerators overloading. [druzus]
*/
if( pMsg == s___msgEnumIndex.pDynSym )
{
hb_itemPutNL( hb_stackReturnItem(), pEnum->item.asEnum.offset );
if( hb_pcount() > 0 && ISNUM( 1 ) )
pEnum->item.asEnum.offset = hb_itemGetNL( hb_param( 1, HB_IT_ANY ) );
return &s___msgEnumIndex;
}
else if( pMsg == s___msgEnumKey.pDynSym )
{
PHB_ITEM pBase = HB_IS_BYREF( pEnum->item.asEnum.basePtr ) ?
hb_itemUnRef( pEnum->item.asEnum.basePtr ) :
pEnum->item.asEnum.basePtr;
if( HB_IS_HASH( pBase ) )
{
pBase = hb_hashGetKeyAt( pBase, pEnum->item.asEnum.offset );
if( pBase )
hb_itemCopy( hb_stackReturnItem(), pBase );
}
return &s___msgEnumKey;
}
else if( pMsg == s___msgEnumBase.pDynSym )
{
if( HB_IS_BYREF( pEnum->item.asEnum.basePtr ) )
hb_itemCopy( hb_stackReturnItem(),
hb_itemUnRef( pEnum->item.asEnum.basePtr ) );
else
hb_itemCopy( hb_stackReturnItem(),
pEnum->item.asEnum.basePtr );
if( hb_pcount() > 0 )
hb_itemCopy( pEnum->item.asEnum.basePtr,
hb_itemUnRef( hb_stackItemFromBase( 1 ) ) );
return &s___msgEnumBase;
}
else if( pMsg == s___msgEnumValue.pDynSym )
{
pEnum = hb_itemUnRef( pEnum );
hb_itemCopy( hb_stackReturnItem(), pEnum );
if( hb_pcount() > 0 )
hb_itemCopy( pEnum, hb_itemUnRef( hb_stackItemFromBase( 1 ) ) );
return &s___msgEnumValue;
}
}
}
}
else if( HB_IS_SYMBOL( pObject ) )
{
if( s_uiSymbolClass )
{
pClass = &s_pClasses[ s_uiSymbolClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
if( pMsg == s___msgExec.pDynSym || pMsg == hb_symEval.pDynSym )
{
if( ! pObject->item.asSymbol.value->value.pFunPtr &&
pObject->item.asSymbol.value->pDynSym )
return pObject->item.asSymbol.value->pDynSym->pSymbol;
else
return pObject->item.asSymbol.value;
}
else if( pMsg == s___msgName.pDynSym )
{
hb_itemPutC( hb_stackReturnItem(),
pObject->item.asSymbol.value->szName );
return &s___msgName;
}
}
else if( HB_IS_HASH( pObject ) )
{
if( s_uiHashClass )
{
pClass = &s_pClasses[ s_uiHashClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
if( pMsg == s___msgKeys.pDynSym )
{
hb_itemReturnRelease( hb_hashGetKeys( pObject ) );
return &s___msgKeys;
}
else if( pMsg == s___msgValues.pDynSym )
{
hb_itemReturnRelease( hb_hashGetValues( pObject ) );
return &s___msgValues;
}
#if defined( HB_HASH_MSG_ITEMS )
else
{
if( hb_pcount() == 1 && pMessage->szName[ 0 ] == '_' )
{ /* ASSIGN */
PHB_ITEM pIndex = hb_itemPutCConst( hb_stackAllocItem(), pMessage->szName + 1 );
PHB_ITEM pDest = hb_hashGetItemPtr( pObject, pIndex, HB_HASH_AUTOADD_ASSIGN );
hb_stackPop();
if( pDest )
{
PHB_ITEM pValue = hb_param( 1, HB_IT_ANY );
hb_itemCopyFromRef( pDest, pValue );
hb_itemReturn( pValue );
return &s___msgVirtual;
}
}
else if( hb_pcount() == 0 )
{ /* ACCESS */
PHB_ITEM pIndex = hb_itemPutCConst( hb_stackAllocItem(), pMessage->szName );
PHB_ITEM pValue = hb_hashGetItemPtr( pObject, pIndex, HB_HASH_AUTOADD_ACCESS );
hb_stackPop();
if( pValue )
{
hb_itemReturn( pValue );
return &s___msgVirtual;
}
}
}
#endif
}
else if( HB_IS_STRING( pObject ) )
{
if( s_uiCharacterClass )
{
pClass = &s_pClasses[ s_uiCharacterClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_DATE( pObject ) )
{
if( s_uiDateClass )
{
pClass = &s_pClasses[ s_uiDateClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_NUMERIC( pObject ) )
{
if( s_uiNumericClass )
{
pClass = &s_pClasses[ s_uiNumericClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_LOGICAL( pObject ) )
{
if( s_uiLogicalClass )
{
pClass = &s_pClasses[ s_uiLogicalClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_POINTER( pObject ) )
{
if( s_uiPointerClass )
{
pClass = &s_pClasses[ s_uiPointerClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
else if( HB_IS_NIL( pObject ) )
{
if( s_uiNilClass )
{
pClass = &s_pClasses[ s_uiNilClass ];
{
PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack );
if( pExecSym )
return pExecSym;
}
}
}
/* Default messages here */
if( pMsg == s___msgWithObjectPush.pDynSym )
{
if( pStack )
{
PHB_ITEM pItem = hb_stackWithObjectItem();
if( pItem )
{
/* push current WITH OBJECT object */
hb_itemCopy( hb_stackReturnItem(), pItem );
return &s___msgWithObjectPush;
}
}
}
else if( pMsg == s___msgWithObjectPop.pDynSym )
{
if( pStack )
{
PHB_ITEM pItem = hb_stackWithObjectItem();
if( pItem )
{
/* replace current WITH OBJECT object */
hb_itemCopy( pItem, hb_stackItemFromBase( 1 ) );
hb_itemCopy( hb_stackReturnItem(), pItem );
return &s___msgWithObjectPop;
}
}
}
else if( pMsg == s___msgClassName.pDynSym )
return &s___msgClassName;
else if( pMsg == s___msgClassH.pDynSym )
return &s___msgClassH;
else if( pMsg == s___msgClassSel.pDynSym )
return &s___msgClassSel;
/*
else if( pMsg == s___msgClsParent.pDynSym )
return &s___msgClsParent;
else if( pMsg == s___msgClass.pDynSym )
return &s___msgClass;
*/
if( pStack )
{
if( pClass && pClass->fHasOnError )
{
PMETHOD pMethod = hb_clsFindMsg( pClass, s___msgOnError.pDynSym );
if( pMethod )
{
pStack->uiMethod = ( USHORT ) ( pMethod - pClass->pMethods );
return pMethod->pFuncSym;
}
}
/* remove this line if you want default HVM error message */
return &s___msgNoMethod;
}
return NULL;
}
BOOL hb_objGetVarRef( PHB_ITEM pObject, PHB_SYMB pMessage,
PHB_STACK_STATE pStack )
{
PHB_SYMB pExecSym;
#if defined( HB_HASH_MSG_ITEMS )
if( HB_IS_HASH( pObject ) )
{
PHB_ITEM pIndex = hb_itemPutCConst( hb_stackAllocItem(), pMessage->szName + 1 );
PHB_ITEM pValue = hb_hashGetItemRefPtr( pObject, pIndex );
hb_stackPop();
if( pValue )
hb_itemReturn( pValue );
return pValue != NULL;
}
#endif
pExecSym = hb_objGetMethod( pObject, pMessage, pStack );
if( pExecSym )
{
if( pExecSym->value.pFunPtr == hb___msgSetData )
{
USHORT uiObjClass = pObject->item.asArray.value->uiClass;
PCLASS pClass = &s_pClasses[ pStack->uiClass ];
PMETHOD pMethod = pClass->pMethods + pStack->uiMethod;
ULONG ulIndex = pMethod->uiData;
if( pStack->uiClass != uiObjClass )
ulIndex += hb_clsParentInstanceOffset( &s_pClasses[ uiObjClass ],
s_pClasses[ pMethod->uiSprClass ].pClassSym );
else
ulIndex += pMethod->uiOffset;
/* will arise only if the class has been modified after first instance */
if( ulIndex > hb_arrayLen( pObject ) ) /* Resize needed */
hb_arraySize( pObject, ulIndex ); /* Make large enough */
return hb_arrayGetItemRef( pObject, ulIndex, hb_stackReturnItem() );
}
else if( pExecSym->value.pFunPtr == hb___msgSetClsData )
{
PCLASS pClass = &s_pClasses[ pStack->uiClass ];
PMETHOD pMethod = pClass->pMethods + pStack->uiMethod;
return hb_arrayGetItemRef( pClass->pClassDatas, pMethod->uiData,
hb_stackReturnItem() );
}
else if( pExecSym->value.pFunPtr == hb___msgSetShrData )
{
PCLASS pClass = &s_pClasses[ pStack->uiClass ];
PMETHOD pMethod = pClass->pMethods + pStack->uiMethod;
return hb_arrayGetItemRef( s_pClasses[ pMethod->uiSprClass ].pSharedDatas,
pMethod->uiData, hb_stackReturnItem() );
}
else if( pExecSym->value.pFunPtr == hb___msgScopeErr )
{
pExecSym->value.pFunPtr();
}
else
{
PCLASS pClass = &s_pClasses[ pStack->uiClass ];
PMETHOD pMethod = pClass->pMethods + pStack->uiMethod;
if( !pMethod->pAccMsg )
pMethod->pAccMsg = hb_dynsymGetCase( pMessage->szName + 1 );
return hb_vmMsgReference( pObject, pMessage->pDynSym, pMethod->pAccMsg );
}
}
return FALSE;
}
/*
* Check if class has object destructors
*/
BOOL hb_clsHasDestructor( USHORT uiClass )
{
if( uiClass && uiClass <= s_uiClasses )
return s_pClasses[ uiClass ].fHasDestructor;
else
return FALSE;
}
/*
* Call all known supper destructors
*/
static void hb_objSupperDestructorCall( PHB_ITEM pObject, PCLASS pClass )
{
PMETHOD pMethod = pClass->pMethods;
ULONG ulLimit = hb_clsMthNum( pClass );
BYTE * pbClasses;
USHORT uiClass;
pbClasses = ( BYTE * ) hb_xgrab( s_uiClasses + 1 );
memset( pbClasses, 0, s_uiClasses + 1 );
do
{
if( pMethod->pMessage )
{
if( pMethod->pFuncSym == &s___msgSuper )
{
PCLASS pSupperClass = &s_pClasses[ pMethod->uiSprClass ];
if( pSupperClass->fHasDestructor && pSupperClass != pClass )
pbClasses[ pMethod->uiSprClass ] |= 1;
}
else if( pMethod->pMessage == s___msgDestructor.pDynSym )
pbClasses[ pMethod->uiSprClass ] |= 2;
}
++pMethod;
}
while( --ulLimit );
for( uiClass = s_uiClasses; uiClass; --uiClass )
{
if( pbClasses[ uiClass ] == 1 )
{
PMETHOD pDestructor = hb_clsFindMsg( &s_pClasses[ uiClass ],
s___msgDestructor.pDynSym );
if( pDestructor )
{
if( pbClasses[ pDestructor->uiSprClass ] == 1 )
{
hb_vmPushSymbol( &s___msgDestructor );
hb_clsMakeSuperObject( hb_stackAllocItem(), pObject, uiClass );
hb_vmSend( 0 );
if( hb_vmRequestQuery() != 0 )
break;
pbClasses[ pDestructor->uiSprClass ] |= 2;
}
}
}
}
hb_xfree( pbClasses );
}
/*
* Call object destructor
*/
void hb_objDestructorCall( PHB_ITEM pObject )
{
if( HB_IS_OBJECT( pObject ) &&
pObject->item.asArray.value->uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ pObject->item.asArray.value->uiClass ];
if( pClass->fHasDestructor )
{
if( hb_vmRequestReenter() )
{
hb_vmPushSymbol( &s___msgDestructor );
hb_vmPush( pObject );
hb_vmSend( 0 );
if( hb_vmRequestQuery() == 0 )
hb_objSupperDestructorCall( pObject, pClass );
hb_vmRequestRestore();
}
}
}
}
/*
* Check if object has a given operator
*/
BOOL hb_objHasOperator( PHB_ITEM pObject, USHORT uiOperator )
{
USHORT uiClass;
HB_TRACE(HB_TR_DEBUG, ("hb_objHasOperator(%p,%hu)", pObject, uiOperator));
uiClass = hb_objGetClassH( pObject );
if( uiClass && uiClass <= s_uiClasses )
{
return ( s_pClasses[ uiClass ].ulOpFlags & ( 1UL << uiOperator ) ) != 0;
}
return FALSE;
}
/*
* Call object operator. If pMsgArg is NULL then operator is unary.
* Function return TRUE when object class overloads given operator
* and FALSE otherwise. [druzus]
*/
BOOL hb_objOperatorCall( USHORT uiOperator, HB_ITEM_PTR pResult, PHB_ITEM pObject,
PHB_ITEM pMsgArg1, PHB_ITEM pMsgArg2 )
{
HB_TRACE(HB_TR_DEBUG, ("hb_objOperatorCall(%hu,%p,%p,%p,%p)", uiOperator, pResult, pObject, pMsgArg1, pMsgArg2));
if( hb_objHasOperator( pObject, uiOperator ) )
{
hb_vmPushSymbol( s_opSymbols + uiOperator );
hb_vmPush( pObject );
hb_itemSetNil( hb_stackReturnItem() );
if( pMsgArg1 )
{
hb_vmPush( pMsgArg1 );
if( pMsgArg2 )
{
hb_vmPush( pMsgArg2 );
hb_vmSend( 2 );
}
else
hb_vmSend( 1 );
}
else
hb_vmSend( 0 );
/* store the return value */
hb_itemMove( pResult, hb_stackReturnItem() );
return TRUE;
}
return FALSE;
}
/*
* return TRUE if object has a given message
*/
HB_EXPORT BOOL hb_objHasMessage( PHB_ITEM pObject, PHB_DYNS pMessage )
{
return hb_objGetMethod( pObject, pMessage->pSymbol, NULL ) != NULL;
}
/*
* <bool> = hb_objHasMsg( <pObject>, <szString> )
*
* Check whether <szString> is an existing message for object.
*
* <uPtr> should be read as a boolean
*/
HB_EXPORT BOOL hb_objHasMsg( PHB_ITEM pObject, const char *szString )
{
PHB_DYNS pDynSym;
HB_TRACE(HB_TR_DEBUG, ("hb_objHasMsg(%p, %s)", pObject, szString));
pDynSym = hb_dynsymFindName( szString );
if( pDynSym )
{
return hb_objGetMethod( pObject, pDynSym->pSymbol, NULL ) != NULL;
}
else
{
return FALSE;
}
}
HB_EXPORT PHB_ITEM hb_objSendMessage( PHB_ITEM pObject, PHB_DYNS pMsgSym, ULONG ulArg, ... )
{
if( pObject && pMsgSym )
{
hb_vmPushSymbol( pMsgSym->pSymbol );
hb_vmPush( pObject );
if( ulArg )
{
unsigned long i;
va_list ap;
va_start( ap, ulArg );
for( i = 0; i < ulArg; i++ )
{
hb_vmPush( va_arg( ap, PHB_ITEM ) );
}
va_end( ap );
}
hb_vmSend( (USHORT) ulArg );
}
else
{
hb_errRT_BASE( EG_ARG, 3000, NULL, "__ObjSendMessage()", 0 );
}
return hb_stackReturnItem();
}
HB_EXPORT PHB_ITEM hb_objSendMsg( PHB_ITEM pObject, const char *sMsg, ULONG ulArg, ... )
{
hb_vmPushSymbol( hb_dynsymGet( sMsg )->pSymbol );
hb_vmPush( pObject );
if( ulArg )
{
unsigned long i;
va_list ap;
va_start( ap, ulArg );
for( i = 0; i < ulArg; i++ )
{
hb_vmPush( va_arg( ap, PHB_ITEM ) );
}
va_end( ap );
}
hb_vmSend( (USHORT) ulArg );
return hb_stackReturnItem();
}
static PHB_DYNS hb_objGetMsgSym( PHB_ITEM pMessage )
{
PHB_DYNS pDynSym = NULL;
if( pMessage )
{
const char * szMsg = NULL;
if( HB_IS_STRING( pMessage ) )
szMsg = pMessage->item.asString.value;
else if( HB_IS_SYMBOL( pMessage ) )
{
pDynSym = pMessage->item.asSymbol.value->pDynSym;
if( !pDynSym )
szMsg = pMessage->item.asSymbol.value->szName;
}
if( szMsg && *szMsg )
pDynSym = hb_dynsymGet( szMsg );
}
return pDynSym;
}
static PHB_SYMB hb_objGetFuncSym( PHB_ITEM pItem )
{
if( pItem )
{
if( HB_IS_SYMBOL( pItem ) )
return pItem->item.asSymbol.value;
else if( HB_IS_STRING( pItem ) )
{
PHB_DYNS pDynSym = hb_dynsymFindName( hb_itemGetCPtr( pItem ) );
if( pDynSym && pDynSym->pSymbol->value.pFunPtr )
return pDynSym->pSymbol;
}
}
return NULL;
}
/* send message which allows to set execution context for debugger */
HB_EXPORT void hb_dbgObjSendMessage( int iProcLevel, PHB_ITEM pObject, PHB_ITEM pMessage, int iParamOffset )
{
PHB_DYNS pMsgSym;
pMsgSym = hb_objGetMsgSym( pMessage );
if( pObject && pMsgSym )
{
USHORT uiParams = 0;
/* set requested sender class and method id for scope verification */
if( iProcLevel > 0 )
{
int iLevel = hb_stackCallDepth();
if( iProcLevel < iLevel )
{
LONG lOffset = hb_stackBaseProcOffset( iLevel - iProcLevel );
if( lOffset > 0 )
{
PHB_ITEM pItem = hb_stackItem( lOffset );
PHB_ITEM pBase = hb_stackBaseItem();
pBase->item.asSymbol.stackstate->uiClass =
pItem->item.asSymbol.stackstate->uiClass;
pBase->item.asSymbol.stackstate->uiMethod =
pItem->item.asSymbol.stackstate->uiMethod;
}
}
}
else if( iProcLevel == 0 )
{
/* set scope like for internal object messages to any visible
method without respecting overloaded methods */
USHORT uiClass = hb_objGetClassH( pObject );
if( uiClass && uiClass <= s_uiClasses )
{
PMETHOD pMethod = hb_clsFindMsg( &s_pClasses[ uiClass ], pMsgSym );
if( pMethod )
{
PHB_ITEM pBase = hb_stackBaseItem();
pBase->item.asSymbol.stackstate->uiClass = uiClass;
pBase->item.asSymbol.stackstate->uiMethod =
( USHORT ) ( pMethod - s_pClasses[ uiClass ].pMethods );
}
}
}
hb_vmPushSymbol( pMsgSym->pSymbol );
hb_vmPush( pObject );
if( iParamOffset > 0 )
{
int iPCount = hb_pcount();
while( iParamOffset <= iPCount )
{
hb_vmPush( hb_stackItemFromBase( iParamOffset ) );
++uiParams;
++iParamOffset;
}
}
hb_vmSend( uiParams );
}
else
hb_errRT_BASE( EG_ARG, 3000, NULL, "hb_dbgObjSendMessage()", 2, pObject, pMsgSym );
}
static USHORT hb_clsUpdateScope( USHORT uiScope, BOOL fAssign )
{
if( !fAssign )
uiScope &= ~HB_OO_CLSTP_READONLY;
else
{
uiScope &= ~HB_OO_CLSTP_PERSIST;
if( ( uiScope & HB_OO_CLSTP_READONLY ) &&
!( uiScope & HB_OO_CLSTP_HIDDEN ) )
{
/* Class(y) does not allow to write to HIDDEN+READONLY
instance variables, [druzus] */
uiScope &= ~HB_OO_CLSTP_READONLY;
uiScope |= uiScope & HB_OO_CLSTP_PROTECTED ?
HB_OO_CLSTP_HIDDEN : HB_OO_CLSTP_PROTECTED;
}
}
return uiScope;
}
static HB_TYPE hb_clsGetItemType( PHB_ITEM pItem, HB_TYPE nDefault )
{
if( pItem )
{
if( HB_IS_STRING( pItem ) )
{
switch( hb_itemGetCPtr( pItem )[ 0 ] )
{
case 'C':
case 'c':
case '\0':
if( hb_strnicmp( hb_itemGetCPtr( pItem ), "code", 4 ) == 0 )
return HB_IT_BLOCK;
else
return HB_IT_STRING;
case 'S':
case 's':
if( hb_strnicmp( hb_itemGetCPtr( pItem ), "str", 3 ) == 0 )
return HB_IT_STRING;
else
return HB_IT_SYMBOL;
case 'B':
case 'b':
return HB_IT_BLOCK;
case 'D':
case 'd':
return HB_IT_DATE;
case 'L':
case 'l':
return HB_IT_LOGICAL;
case 'I':
case 'i':
return HB_IT_NUMINT;
case 'N':
case 'n':
if( hb_stricmp( hb_itemGetCPtr( pItem ), "nil" ) == 0 )
return HB_IT_NIL;
else
return HB_IT_NUMERIC;
case 'A':
case 'a':
return HB_IT_ARRAY;
case 'P':
case 'p':
return HB_IT_POINTER;
case 'H':
case 'h':
return HB_IT_HASH;
}
}
else if( HB_IS_ARRAY( pItem ) )
{
if( pItem->item.asArray.value->uiClass == 0 )
return HB_IT_ARRAY;
}
else if( HB_IS_NUMINT( pItem ) )
return HB_IT_NUMINT;
else if( HB_IS_NUMERIC( pItem ) )
return HB_IT_NUMERIC;
else if( HB_IS_DATE( pItem ) )
return HB_IT_DATE;
else if( HB_IS_LOGICAL( pItem ) )
return HB_IT_LOGICAL;
else if( HB_IS_BLOCK( pItem ) )
return HB_IT_BLOCK;
else if( HB_IS_POINTER( pItem ) )
return HB_IT_POINTER;
else if( HB_IS_SYMBOL( pItem ) )
return HB_IT_SYMBOL;
else if( HB_IS_NIL( pItem ) )
return HB_IT_NIL;
}
return nDefault;
}
/* ================================================ */
/*
* <uiType> HB_OO_MSG_METHOD : standard method
* HB_OO_MSG_ONERROR : error handler method
* HB_OO_MSG_DESTRUCTOR : destructor method
* HB_OO_MSG_INLINE : inline (codeblock) method
* HB_OO_MSG_ASSIGN : assign instance data
* HB_OO_MSG_ACCESS : access instance data
* HB_OO_MSG_CLSASSIGN : assign class data
* HB_OO_MSG_CLSACCESS : access class data
* HB_OO_MSG_SUPER : supercasting
* HB_OO_MSG_REALCLASS : caller method real class casting
* HB_OO_MSG_PERFORM : perform method
* HB_OO_MSG_VIRTUAL : virtual method
* HB_OO_MSG_DELEGATE : delegate method
*
* <uiScope> * HB_OO_CLSTP_EXPORTED 1 : default for data and method
* HB_OO_CLSTP_PROTECTED 2 : method or data protected
* HB_OO_CLSTP_HIDDEN 4 : method or data hidden
* * HB_OO_CLSTP_CTOR 8 : method constructor
* HB_OO_CLSTP_READONLY 16 : data read only
* HB_OO_CLSTP_SHARED 32 : (method or) data shared
* * HB_OO_CLSTP_CLASS 64 : message is the name of a superclass
* * HB_OO_CLSTP_SUPER 128 : message is herited
* HB_OO_CLSTP_PERSIST 256 : message is persistent (PROPERTY)
* HB_OO_CLSTP_NONVIRTUAL 512 : Class method constructor
* HB_OO_CLSTP_OVERLOADED 1024 : Class method constructor
*
* HB_OO_CLSTP_CLASSCTOR 2048 : Class method constructor
* HB_OO_CLSTP_CLASSMETH 4096 : Class method
*
* <pFunction> HB_OO_MSG_METHOD : \
* HB_OO_MSG_ONERROR : > Pointer to function
* HB_OO_MSG_DESTRUCTOR : /
* HB_OO_MSG_INLINE : Code block
* HB_OO_MSG_ASSIGN : Index to instance area array
* HB_OO_MSG_ACCESS : /
* HB_OO_MSG_CLSASSIGN : Index class data array
* HB_OO_MSG_CLSACCESS : /
* HB_OO_MSG_SUPER : Handle of super class
* HB_OO_MSG_DELEGATE : delegated message symbol
*
* <pInit> HB_OO_MSG_ACCESS : Optional initializer for (Class)DATA
* HB_OO_MSG_CLSACCESS : /
* HB_OO_MSG_ASSIGN : item type restriction in assignment
* HB_OO_MSG_CLSASSIGN : /
* HB_OO_MSG_SUPER : Superclass handle
*/
static BOOL hb_clsAddMsg( USHORT uiClass, const char * szMessage,
USHORT uiType, USHORT uiScope,
PHB_ITEM pFunction, PHB_ITEM pInit )
{
if( szMessage && uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ uiClass ];
PHB_DYNS pMessage;
PMETHOD pNewMeth;
USHORT uiOperator, uiSprClass = 0, uiIndex = 0, uiPrevCls, uiPrevMth;
PHB_SYMB pOpSym, pFuncSym = NULL;
BOOL fOK;
ULONG ulOpFlags = 0;
if( pClass->fLocked )
return FALSE;
if( !( uiScope & ( HB_OO_CLSTP_EXPORTED | HB_OO_CLSTP_PROTECTED | HB_OO_CLSTP_HIDDEN ) ) )
uiScope |= HB_OO_CLSTP_EXPORTED;
/* translate names of operator overloading messages */
if( uiType == HB_OO_MSG_DESTRUCTOR )
pMessage = s___msgDestructor.pDynSym;
else if( uiType == HB_OO_MSG_ONERROR )
pMessage = s___msgOnError.pDynSym;
else if( strcmp( "+", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_PLUS )->pDynSym;
else if( strcmp( "-", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_MINUS )->pDynSym;
else if( strcmp( "*", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_MULT )->pDynSym;
else if( strcmp( "/", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_DIVIDE )->pDynSym;
else if( strcmp( "%", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_MOD )->pDynSym;
else if( strcmp( "^", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_POWER )->pDynSym;
else if( strcmp( "**", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_POWER )->pDynSym;
else if( strcmp( "++", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_INC )->pDynSym;
else if( strcmp( "--", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_DEC )->pDynSym;
else if( strcmp( "==", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_EXACTEQUAL )->pDynSym;
else if( strcmp( "=", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_EQUAL )->pDynSym;
else if( strcmp( "!=", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_NOTEQUAL )->pDynSym;
else if( strcmp( "<>", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_NOTEQUAL )->pDynSym;
else if( strcmp( "#", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_NOTEQUAL )->pDynSym;
else if( strcmp( "<", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_LESS )->pDynSym;
else if( strcmp( "<=", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_LESSEQUAL )->pDynSym;
else if( strcmp( ">", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_GREATER )->pDynSym;
else if( strcmp( ">=", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_GREATEREQUAL )->pDynSym;
else if( strcmp( ":=", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_ASSIGN )->pDynSym;
else if( strcmp( "$", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_INSTRING )->pDynSym;
else if( strcmp( "$$", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_INCLUDE )->pDynSym;
else if( strcmp( "!", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_NOT )->pDynSym;
else if( hb_stricmp( ".NOT.", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_NOT )->pDynSym;
else if( hb_stricmp( ".AND.", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_AND )->pDynSym;
else if( hb_stricmp( ".OR.", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_OR )->pDynSym;
else if( strcmp( "[]", szMessage ) == 0 )
pMessage = ( s_opSymbols + HB_OO_OP_ARRAYINDEX )->pDynSym;
else
pMessage = hb_dynsymGet( szMessage );
for( uiOperator = 0, pOpSym = s_opSymbols;
uiOperator <= HB_OO_MAX_OPERATOR; ++uiOperator, ++pOpSym )
{
if( pOpSym->pDynSym == pMessage )
{
ulOpFlags |= 1UL << uiOperator;
break;
}
}
/* basic parameter validation */
switch( uiType )
{
case HB_OO_MSG_METHOD:
case HB_OO_MSG_ONERROR:
case HB_OO_MSG_DESTRUCTOR:
pFuncSym = hb_objGetFuncSym( pFunction );
fOK = pFuncSym != NULL;
break;
case HB_OO_MSG_INLINE:
fOK = pFunction && HB_IS_BLOCK( pFunction );
break;
case HB_OO_MSG_SUPER:
uiIndex = ( USHORT ) hb_itemGetNI( pFunction );
uiSprClass = ( USHORT ) hb_itemGetNI( pInit );
fOK = uiSprClass && uiSprClass <= s_uiClasses &&
uiIndex <= pClass->uiDatas;
break;
case HB_OO_MSG_ASSIGN:
case HB_OO_MSG_ACCESS:
uiIndex = ( USHORT ) hb_itemGetNI( pFunction );
/* This validation can break buggy .prg code which wrongly
* sets data offsets but IMHO it will help to clean the code.
* [druzus]
*/
fOK = uiIndex && uiIndex <= pClass->uiDatas - pClass->uiDataFirst;
break;
case HB_OO_MSG_CLSASSIGN:
case HB_OO_MSG_CLSACCESS:
uiIndex = ( USHORT ) hb_itemGetNI( pFunction );
fOK = uiIndex != 0;
break;
case HB_OO_MSG_DELEGATE:
{
PHB_DYNS pDelegMsg = hb_objGetMsgSym( pFunction );
if( pDelegMsg )
{
pNewMeth = hb_clsFindMsg( pClass, pDelegMsg );
if( pNewMeth )
uiIndex = ( USHORT ) ( pNewMeth - pClass->pMethods );
}
fOK = uiIndex != 0;
break;
}
case HB_OO_MSG_REALCLASS:
case HB_OO_MSG_VIRTUAL:
case HB_OO_MSG_PERFORM:
fOK = TRUE;
break;
default:
fOK = FALSE;
}
if( !fOK )
{
hb_errRT_BASE( EG_ARG, 3000, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
return FALSE;
}
pNewMeth = hb_clsAllocMsg( pClass, pMessage );
if( ! pNewMeth )
return FALSE;
uiPrevCls = uiClass;
uiPrevMth = ( USHORT ) ( pClass->pMethods - pNewMeth );
#ifndef HB_VIRTUAL_HIDDEN
if( uiScope & HB_OO_CLSTP_HIDDEN )
uiScope |= HB_OO_CLSTP_NONVIRTUAL;
#endif
if( ! pNewMeth->pMessage )
pClass->uiMethods++; /* One more message */
else
{
BOOL fOverLoad = ( pNewMeth->uiScope & HB_OO_CLSTP_OVERLOADED ) ||
( ( pNewMeth->uiScope & HB_OO_CLSTP_NONVIRTUAL ) &&
pNewMeth->uiSprClass != uiClass );
uiPrevCls = pNewMeth->uiPrevCls;
uiPrevMth = pNewMeth->uiPrevMth;
if( ! hb_clsCanClearMethod( pNewMeth, TRUE ) )
return FALSE;
memset( pNewMeth, 0, sizeof( METHOD ) );
if( fOverLoad )
uiScope |= HB_OO_CLSTP_OVERLOADED;
}
pNewMeth->pMessage = pMessage;
pNewMeth->uiSprClass = uiClass;
pNewMeth->uiPrevCls = uiPrevCls;
pNewMeth->uiPrevMth = uiPrevMth;
switch( uiType )
{
case HB_OO_MSG_METHOD:
pNewMeth->pFuncSym = pFuncSym;
pNewMeth->uiScope = uiScope;
break;
case HB_OO_MSG_ASSIGN:
pNewMeth->uiScope = hb_clsUpdateScope( uiScope, TRUE );
/* Class(y) does not allow to write to HIDDEN+READONLY
instance variables, [druzus] */
if( pNewMeth->uiScope & HB_OO_CLSTP_READONLY &&
pNewMeth->uiScope & HB_OO_CLSTP_HIDDEN )
pNewMeth->pFuncSym = &s___msgScopeErr;
else
{
pNewMeth->pFuncSym = &s___msgSetData;
pNewMeth->uiData = uiIndex;
pNewMeth->uiOffset = pClass->uiDataFirst;
pNewMeth->itemType = hb_clsGetItemType( pInit, 0 );
}
break;
case HB_OO_MSG_ACCESS:
pNewMeth->uiScope = hb_clsUpdateScope( uiScope, FALSE );
pNewMeth->uiData = uiIndex;
pNewMeth->uiOffset = pClass->uiDataFirst;
hb_clsAddInitValue( pClass, pInit, HB_OO_MSG_DATA,
pNewMeth->uiData, pNewMeth->uiOffset, uiClass );
pNewMeth->pFuncSym = &s___msgGetData;
break;
case HB_OO_MSG_CLSASSIGN:
pNewMeth->uiData = uiIndex;
pNewMeth->itemType = hb_clsGetItemType( pInit, 0 );
pNewMeth->uiScope = hb_clsUpdateScope( uiScope, TRUE );
/* Class(y) does not allow to write to HIDDEN+READONLY
instance variables, [druzus] */
if( pNewMeth->uiScope & HB_OO_CLSTP_READONLY &&
pNewMeth->uiScope & HB_OO_CLSTP_HIDDEN )
pNewMeth->pFuncSym = &s___msgScopeErr;
else if( pNewMeth->uiScope & HB_OO_CLSTP_SHARED )
{
if( hb_arrayLen( pClass->pSharedDatas ) < ( ULONG ) pNewMeth->uiData )
hb_arraySize( pClass->pSharedDatas, pNewMeth->uiData );
pNewMeth->pFuncSym = &s___msgSetShrData;
}
else
{
if( hb_arrayLen( pClass->pClassDatas ) < ( ULONG ) pNewMeth->uiData )
hb_arraySize( pClass->pClassDatas, pNewMeth->uiData );
pNewMeth->pFuncSym = &s___msgSetClsData;
}
break;
case HB_OO_MSG_CLSACCESS:
pNewMeth->uiScope = hb_clsUpdateScope( uiScope, FALSE );
pNewMeth->uiData = uiIndex;
if( pNewMeth->uiScope & HB_OO_CLSTP_SHARED )
{
if( hb_arrayLen( pClass->pSharedDatas ) < ( ULONG ) pNewMeth->uiData )
hb_arraySize( pClass->pSharedDatas, pNewMeth->uiData );
if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */
{
/* Shared Classdata need to be initialized only once
* ACCESS/ASSIGN methods will be inherited by subclasses
* and will operate on this value so it's not necessary
* to keep the init value. [druzus]
*/
pInit = hb_itemClone( pInit );
hb_arraySet( pClass->pSharedDatas, pNewMeth->uiData, pInit );
hb_itemRelease( pInit );
}
pNewMeth->pFuncSym = &s___msgGetShrData;
}
else
{
if( hb_arrayLen( pClass->pClassDatas ) < ( ULONG ) pNewMeth->uiData )
hb_arraySize( pClass->pClassDatas, pNewMeth->uiData );
pNewMeth->uiOffset = hb_clsAddInitValue( pClass, pInit,
HB_OO_MSG_CLASSDATA, pNewMeth->uiData, 0, uiClass );
pNewMeth->pFuncSym = &s___msgGetClsData;
}
break;
case HB_OO_MSG_INLINE:
pNewMeth->pFuncSym = &s___msgEvalInline;
pNewMeth->uiScope = uiScope;
hb_arrayAdd( pClass->pInlines, pFunction );
pNewMeth->uiData = ( USHORT ) hb_arrayLen( pClass->pInlines );
break;
case HB_OO_MSG_VIRTUAL:
pNewMeth->pFuncSym = &s___msgVirtual;
pNewMeth->uiScope = uiScope;
break;
case HB_OO_MSG_SUPER:
pNewMeth->uiSprClass = uiSprClass; /* store the super handel */
pNewMeth->uiOffset = uiIndex; /* offset to instance area */
pNewMeth->uiScope = uiScope;
pNewMeth->pFuncSym = &s___msgSuper;
break;
case HB_OO_MSG_REALCLASS:
pNewMeth->pFuncSym = &s___msgRealClass;
pNewMeth->uiScope = uiScope;
break;
case HB_OO_MSG_PERFORM:
pNewMeth->pFuncSym = &s___msgPerform;
pNewMeth->uiScope = uiScope;
break;
case HB_OO_MSG_DELEGATE:
pNewMeth->pFuncSym = &s___msgDelegate;
pNewMeth->uiScope = uiScope;
pNewMeth->uiData = uiIndex;
break;
case HB_OO_MSG_ONERROR:
pNewMeth->pFuncSym = pFuncSym;
pClass->fHasOnError = TRUE;
break;
case HB_OO_MSG_DESTRUCTOR:
pNewMeth->pFuncSym = pFuncSym;
pClass->fHasDestructor = TRUE;
break;
default:
hb_errInternal( HB_EI_CLSINVMETHOD, NULL, "__clsAddMsg", NULL );
return FALSE;
}
pClass->ulOpFlags |= ulOpFlags;
}
return TRUE;
}
/*
* __clsAddMsg( <hClass>, <cMessage>, <pFunction>, <nType>, [xInit], <uiScope>, <xItemType> )
*
* Add a message to the class.
*
* <hClass> Class handle
* <cMessage> Message
* <pFunction> HB_OO_MSG_METHOD : \
* HB_OO_MSG_ONERROR : > Pointer to function
* HB_OO_MSG_DESTRUCTOR : /
* HB_OO_MSG_INLINE : Code block
* HB_OO_MSG_DATA : \
* HB_OO_MSG_ASSIGN : > Index to instance area array
* HB_OO_MSG_ACCESS : /
* HB_OO_MSG_CLASSDATA : \
* HB_OO_MSG_CLSASSIGN : > Index class data array
* HB_OO_MSG_CLSACCESS : /
* HB_OO_MSG_SUPER : Handle of super class
* HB_OO_MSG_DELEGATE : delegated message symbol
*
* <nType> see HB_OO_MSG_* above and:
* HB_OO_MSG_REALCLASS : caller method real class casting
* HB_OO_MSG_PERFORM : perform message
* HB_OO_MSG_VIRTUAL : virtual message
* HB_OO_MSG_DELEGATE : delegate method
*
* <xInit> HB_OO_MSG_ACCESS : \
* HB_OO_MSG_CLSACCESS : > Optional initializer for DATA
* HB_OO_MSG_DATA : /
* HB_OO_MSG_CLASSDATA : /
* HB_OO_MSG_SUPER : Superclass handle
* HB_OO_MSG_ASSIGN : \ item type restriction in assignment not
* HB_OO_MSG_CLSASSIGN: : empty character value where first letter
* is item type or item of a given value
*
* <uiScope> * HB_OO_CLSTP_EXPORTED 1 : default for data and method
* HB_OO_CLSTP_PROTECTED 2 : method or data protected
* HB_OO_CLSTP_HIDDEN 4 : method or data hidden
* * HB_OO_CLSTP_CTOR 8 : method constructor
* HB_OO_CLSTP_READONLY 16 : data read only
* HB_OO_CLSTP_SHARED 32 : (method or) data shared
* * HB_OO_CLSTP_CLASS 64 : message is the name of a superclass
* * HB_OO_CLSTP_SUPER 128 : message is herited
* HB_OO_CLSTP_PERSIST 256 : message is persistent (PROPERTY)
* HB_OO_CLSTP_NONVIRTUAL 512 : Class method constructor
* HB_OO_CLSTP_OVERLOADED 1024 : Class method constructor
*
* HB_OO_CLSTP_CLASSCTOR 2048 : Class method constructor
* HB_OO_CLSTP_CLASSMETH 4096 : Class method
*/
HB_FUNC( __CLSADDMSG )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
char * szMessage = hb_parc( 2 );
if( szMessage && uiClass && uiClass <= s_uiClasses )
{
USHORT nType = ( USHORT ) hb_parni( 4 );
USHORT uiScope = ( USHORT ) hb_parni( 6 );
PHB_ITEM pFunction = hb_param( 3, HB_IT_ANY );
PHB_ITEM pInit = hb_param( 5, HB_IT_ANY );
if( nType == HB_OO_MSG_DATA )
{
nType = szMessage[ 0 ] == '_' ? HB_OO_MSG_ASSIGN : HB_OO_MSG_ACCESS;
}
else if( nType == HB_OO_MSG_CLASSDATA )
{
nType = szMessage[ 0 ] == '_' ? HB_OO_MSG_CLSASSIGN :
HB_OO_MSG_CLSACCESS;
}
/* to make xHarbour users happy ;-) */
else if( nType == HB_OO_MSG_PROPERTY ||
nType == HB_OO_MSG_CLASSPROPERTY )
{
char szAssign[ HB_SYMBOL_NAME_LEN + 1 ];
int iLen = ( int ) hb_parclen( 2 );
if( iLen >= HB_SYMBOL_NAME_LEN )
iLen = HB_SYMBOL_NAME_LEN - 1;
szAssign[ 0 ] = '_';
memcpy( szAssign + 1, szMessage, iLen );
szAssign[ iLen + 1 ] = '\0';
uiScope = ( uiScope | HB_OO_CLSTP_EXPORTED ) &
~( HB_OO_CLSTP_PROTECTED | HB_OO_CLSTP_HIDDEN );
if( nType == HB_OO_MSG_PROPERTY )
{
hb_clsAddMsg( uiClass, szAssign, HB_OO_MSG_ASSIGN,
uiScope & ~HB_OO_CLSTP_PERSIST, pFunction, pInit );
nType = HB_OO_MSG_ACCESS;
}
else
{
hb_clsAddMsg( uiClass, szAssign, HB_OO_MSG_CLSASSIGN,
uiScope & ~HB_OO_CLSTP_PERSIST, pFunction, pInit );
nType = HB_OO_MSG_CLSACCESS;
}
}
hb_clsAddMsg( uiClass, szMessage, nType, uiScope, pFunction, pInit );
}
}
/*
* __clsNew( <szClassName>, <uiDatas>,
* [<pSuperArray>], [<pClassFunc>],
* [<fModuleFriendly>] ) -> <hClass>
*
* Create a new class
*
* <szClassName> Name of the class
* <uiDatas> Number of DATAs in the class
* <pSuperArray> Optional array with handle(s) of superclass(es)
* <pClassFunc> Class function symbol, when NULLpublic function
* with the same name as szClassName is used
* <fModuleFriendly> when true all functions and classes from the same
* module as pClassFunc are defined as friends
*/
static USHORT hb_clsNew( const char * szClassName, USHORT uiDatas,
PHB_ITEM pSuperArray, PHB_SYMB pClassFunc,
BOOL fModuleFriendly )
{
PCLASS pNewCls;
PMETHOD pMethod;
USHORT ui, uiSuper, uiSuperCls;
USHORT * puiClassData = NULL, uiClassDataSize = 0;
uiSuper = ( USHORT ) ( pSuperArray ? hb_arrayLen( pSuperArray ) : 0 );
pClassFunc = hb_vmGetRealFuncSym( pClassFunc );
if( s_pClasses )
s_pClasses = ( PCLASS ) hb_xrealloc( s_pClasses, sizeof( CLASS ) * ( s_uiClasses + 2 ) );
else
{
s_pClasses = ( PCLASS ) hb_xgrab( sizeof( CLASS ) * 2 );
memset( s_pClasses, 0, sizeof( CLASS ) );
}
pNewCls = s_pClasses + ++s_uiClasses;
memset( pNewCls, 0, sizeof( CLASS ) );
pNewCls->szName = hb_strdup( szClassName );
pNewCls->pClassSym = hb_dynsymGet( pNewCls->szName );
if( !pClassFunc )
pClassFunc = hb_vmGetRealFuncSym( pNewCls->pClassSym->pSymbol );
pNewCls->pClassFuncSym = pClassFunc;
if( fModuleFriendly )
hb_vmFindModuleSymbols( pClassFunc, &pNewCls->pFriendModule,
&pNewCls->uiFriendModule );
for( ui = 1; ui <= uiSuper; ++ui )
{
uiSuperCls = ( USHORT ) hb_arrayGetNI( pSuperArray, ui );
if( uiSuperCls && uiSuperCls < s_uiClasses )
{
PCLASS pSprCls;
pSprCls = &s_pClasses[ uiSuperCls ];
if( ! hb_clsInited( pNewCls ) ) /* This is the first superclass */
{
hb_clsCopyClass( pNewCls, pSprCls );
}
else if( !hb_clsHasParent( pNewCls, pSprCls->pClassSym ) )
{
ULONG ul, ulLimit;
USHORT nLenClsDatas;
/* create class data translation tables */
nLenClsDatas = ( USHORT ) hb_itemSize( pSprCls->pClassDatas );
if( nLenClsDatas )
{
if( nLenClsDatas > uiClassDataSize )
{
if( puiClassData )
puiClassData = ( USHORT * ) hb_xrealloc( puiClassData,
sizeof( USHORT ) * nLenClsDatas );
else
puiClassData = ( USHORT * ) hb_xgrab( sizeof( USHORT ) *
nLenClsDatas );
uiClassDataSize = nLenClsDatas;
}
memset( puiClassData, 0, sizeof( USHORT ) * nLenClsDatas );
}
/* Copy super classs handles */
ulLimit = hb_clsMthNum( pSprCls );
for( ul = 0; ul < ulLimit; ++ul )
{
if( pSprCls->pMethods[ ul ].pMessage &&
pSprCls->pMethods[ ul ].pFuncSym == &s___msgSuper )
{
PCLASS pCls = &s_pClasses[ pSprCls->pMethods[ ul ].uiSprClass ];
pMethod = hb_clsAllocMsg( pNewCls,
pSprCls->pMethods[ ul ].pMessage );
if( ! pMethod )
return 0;
if( pMethod->pMessage == NULL )
{
pNewCls->uiMethods++;
memcpy( pMethod, pSprCls->pMethods + ul, sizeof( METHOD ) );
pMethod->uiOffset = pNewCls->uiDatas;
pNewCls->uiDatas += pCls->uiDatas - pCls->uiDataFirst;
}
}
}
/* add class casting if not exist */
pMethod = hb_clsAllocMsg( pNewCls, pSprCls->pClassSym );
if( ! pMethod )
return 0;
if( pMethod->pMessage == NULL )
{
pNewCls->uiMethods++;
pMethod->pMessage = pSprCls->pClassSym;
pMethod->uiSprClass = uiSuperCls;
pMethod->uiScope = HB_OO_CLSTP_EXPORTED;
pMethod->pFuncSym = &s___msgSuper;
pMethod->uiOffset = pNewCls->uiDatas;
pNewCls->uiDatas += pSprCls->uiDatas - pSprCls->uiDataFirst;
}
/* Copy instance area init data */
if( pSprCls->uiInitDatas )
{
USHORT u;
for( u = 0; u < pSprCls->uiInitDatas; ++u )
{
if( pSprCls->pInitData[ u ].uiType == HB_OO_MSG_DATA )
{
USHORT uiCls = pSprCls->pInitData[ u ].uiSprClass;
hb_clsAddInitValue( pNewCls,
pSprCls->pInitData[ u ].pInitValue, HB_OO_MSG_DATA,
pSprCls->pInitData[ u ].uiData,
hb_clsParentInstanceOffset( pNewCls,
s_pClasses[ uiCls ].pClassSym ),
uiCls );
}
}
}
/* Now working on other methods */
ulLimit = hb_clsMthNum( pSprCls );
for( ul = 0; ul < ulLimit; ++ul )
{
if( pSprCls->pMethods[ ul ].pMessage )
{
pMethod = hb_clsAllocMsg( pNewCls, pSprCls->pMethods[ ul ].pMessage );
if( ! pMethod )
return 0;
/* Ok, this bucket is empty */
if( pMethod->pMessage == NULL )
{
/* Now, we can increment the msg count */
pNewCls->uiMethods++;
memcpy( pMethod, pSprCls->pMethods + ul, sizeof( METHOD ) );
if( ! hb_clsUpdateHiddenMessages( pMethod, pMethod, pNewCls ) )
{
if( pMethod->pFuncSym == &s___msgSetClsData ||
pMethod->pFuncSym == &s___msgGetClsData )
{
if( pMethod->uiData > nLenClsDatas )
hb_errInternal( HB_EI_CLSINVMETHOD, NULL, "__clsNew", NULL );
if( puiClassData[ pMethod->uiData - 1 ] == 0 )
{
puiClassData[ pMethod->uiData - 1 ] = ( USHORT )
hb_arrayLen( pNewCls->pClassDatas ) + 1;
hb_arraySize( pNewCls->pClassDatas,
puiClassData[ pMethod->uiData - 1 ] );
}
if( pMethod->uiOffset )
{
pMethod->uiOffset = hb_clsAddInitValue( pNewCls,
pSprCls->pInitData[ pMethod->uiOffset - 1 ].pInitValue,
HB_OO_MSG_CLASSDATA, puiClassData[ pMethod->uiData - 1 ],
0, uiSuperCls );
}
pMethod->uiData = puiClassData[ pMethod->uiData - 1 ];
}
else if( pMethod->pFuncSym == &s___msgSetData ||
pMethod->pFuncSym == &s___msgGetData )
{
pMethod->uiOffset = hb_clsParentInstanceOffset( pNewCls,
s_pClasses[ pMethod->uiSprClass ].pClassSym );
}
pMethod->uiScope |= HB_OO_CLSTP_SUPER;
}
}
else
{
if( pSprCls->pMethods[ ul ].uiScope &
( HB_OO_CLSTP_OVERLOADED | HB_OO_CLSTP_NONVIRTUAL ) )
pMethod->uiScope |= HB_OO_CLSTP_OVERLOADED;
hb_clsUpdateHiddenMessages( pSprCls->pMethods + ul, pMethod, pNewCls );
}
}
}
pNewCls->ulOpFlags |= pSprCls->ulOpFlags;
}
}
}
if( puiClassData )
hb_xfree( puiClassData );
if( ! hb_clsInited( pNewCls ) )
{
hb_clsDictInit( pNewCls, HASH_KEY );
pNewCls->pClassDatas = hb_itemArrayNew( 0 );
pNewCls->pSharedDatas = hb_itemArrayNew( 0 );
pNewCls->pInlines = hb_itemArrayNew( 0 );
}
/* add self class casting */
if( hb_stricmp( pNewCls->szName, pNewCls->pClassSym->pSymbol->szName ) == 0 )
{
pMethod = hb_clsAllocMsg( pNewCls, pNewCls->pClassSym );
if( ! pMethod )
return 0;
if( pMethod->pMessage == NULL )
{
pNewCls->uiMethods++;
pMethod->pMessage = pNewCls->pClassSym;
pMethod->uiSprClass = s_uiClasses;
pMethod->uiScope = HB_OO_CLSTP_EXPORTED;
pMethod->pFuncSym = &s___msgSuper;
pMethod->uiOffset = pNewCls->uiDatas;
}
}
pNewCls->uiDataFirst = pNewCls->uiDatas;
pNewCls->uiDatas += uiDatas;
return s_uiClasses;
}
/*
* hb_clsNew( <szClassName>, < ) -> <hClass>
*
* <hClass> := __clsNew( <cClassName>, <nDatas>, [<ahSuper>], [<pClassFunc>], [<lModuleFriendly>] )
*
* Create a new class
*
* <cClassName> Name of the class
* <nDatas> Number of DATAs in the class
* <ahSuper> Optional array with handle(s) of superclass(es)
* <pClassFunc> Class function symbol
* <lModuleFriendly> when true all functions and classes from the same
* module as pClassFunc are defined as friends
*/
HB_FUNC( __CLSNEW )
{
char * szClassName;
PHB_ITEM pDatas, pSuperArray, pClassFunc, pModFriend;
szClassName = hb_parc( 1 );
pDatas = hb_param( 2, HB_IT_ANY );
pSuperArray = hb_param( 3, HB_IT_ANY );
if( pSuperArray && HB_IS_NIL( pSuperArray ) )
pSuperArray = NULL;
pClassFunc = hb_param( 4, HB_IT_ANY );
if( pClassFunc && HB_IS_NIL( pClassFunc ) )
pClassFunc = NULL;
pModFriend = hb_param( 5, HB_IT_ANY );
if( pModFriend && HB_IS_NIL( pModFriend ) )
pModFriend = NULL;
if( szClassName &&
( ! pDatas || HB_IS_NUMERIC( pDatas ) ) &&
( ! pSuperArray || HB_IS_ARRAY( pSuperArray ) ) &&
( ! pClassFunc || HB_IS_SYMBOL( pClassFunc ) ) &&
( ! pModFriend || HB_IS_LOGICAL( pModFriend ) ) )
{
USHORT uiClass;
uiClass = hb_clsNew( szClassName, ( USHORT ) hb_itemGetNI( pDatas ),
pSuperArray, hb_itemGetSymbol( pClassFunc ),
hb_itemGetL( pModFriend ) );
hb_retni( uiClass );
}
else
hb_errRT_BASE( EG_ARG, 3000, NULL, "__CLSNEW", HB_ERR_ARGS_BASEPARAMS );
}
/*
* __clsAddFriend( <hClass>, <pFyncSym> )
*
* Add friend function
*/
HB_FUNC( __CLSADDFRIEND )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ uiClass ];
if( !pClass->fLocked )
{
PHB_SYMB pSym = hb_vmGetRealFuncSym( hb_itemGetSymbol( hb_param( 2,
HB_IT_SYMBOL ) ) );
if( pSym )
hb_clsAddFriendSymbol( pClass, pSym );
}
}
}
/*
* __clsDelMsg( <hClass>, <cMessage> )
*
* Delete message (only for INLINE and METHOD)
*
* <hClass> class handle
* <cMessage> message
*/
HB_FUNC( __CLSDELMSG )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
PHB_ITEM pString = hb_param( 2, HB_IT_STRING );
if( uiClass && uiClass <= s_uiClasses && pString &&
! s_pClasses[ uiClass ].fLocked )
{
PHB_DYNS pMsg = hb_dynsymFindName( pString->item.asString.value );
if( pMsg )
hb_clsFreeMsg( &s_pClasses[ uiClass ], pMsg );
}
}
/*
* hb_clsInst( <hClass> ) -> <pObjectItm>
*
* Create a new object from class definition <hClass>
*/
static PHB_ITEM hb_clsInst( USHORT uiClass )
{
PHB_ITEM pSelf = NULL;
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ uiClass ];
pSelf = hb_itemNew( NULL );
hb_arrayNew( pSelf, pClass->uiDatas );
pSelf->item.asArray.value->uiClass = uiClass;
/* Initialise value if initialisation was requested */
if( pClass->uiInitDatas )
{
PINITDATA pInitData = pClass->pInitData;
USHORT ui = pClass->uiInitDatas;
PHB_ITEM pDestItm;
do
{
if( pInitData->uiType == HB_OO_MSG_DATA )
pDestItm = hb_arrayGetItemPtr( pSelf,
pInitData->uiData + pInitData->uiOffset );
else if( pInitData->uiType == HB_OO_MSG_CLASSDATA )
{
pDestItm = hb_arrayGetItemPtr( pClass->pClassDatas,
pInitData->uiData );
/* do not initialize it again */
pInitData->uiType = HB_OO_MSG_INITIALIZED;
}
else
pDestItm = NULL;
if( pDestItm )
{
PHB_ITEM pInit = hb_itemClone( pInitData->pInitValue );
hb_itemMove( pDestItm, pInit );
hb_itemRelease( pInit );
}
++pInitData;
}
while( --ui );
}
}
return pSelf;
}
/*
* <oNewObject> := __clsInst( <hClass> )
*
* Create a new object from class definition <hClass>
*/
HB_FUNC( __CLSINST )
{
PHB_ITEM pSelf = hb_clsInst( ( USHORT ) hb_parni( 1 ) );
if( pSelf )
hb_itemReturnRelease( pSelf );
}
/*
* __clsLock( <hClass> )
* Block farther class modifications
*/
HB_FUNC( __CLSLOCK )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass && uiClass <= s_uiClasses )
s_pClasses[ uiClass ].fLocked = TRUE;
}
/*
* __clsModMsg( <hClass>, <cMessage>, <pFunc> )
*
* Modify message (only for INLINE and METHOD)
*/
HB_FUNC( __CLSMODMSG )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
PHB_ITEM pString = hb_param( 2, HB_IT_STRING );
if( uiClass && uiClass <= s_uiClasses && pString &&
! s_pClasses[ uiClass ].fLocked )
{
PHB_DYNS pMsg = hb_dynsymFindName( pString->item.asString.value );
if( pMsg )
{
PCLASS pClass = &s_pClasses[ uiClass ];
PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg );
if( pMethod )
{
PHB_SYMB pFuncSym = pMethod->pFuncSym;
if( pFuncSym == &s___msgSetData || pFuncSym == &s___msgGetData )
{
hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a DATA item", "__CLSMODMSG", 0 );
}
else if( pFuncSym == &s___msgEvalInline )
{
PHB_ITEM pBlock = hb_param( 3, HB_IT_BLOCK );
if( pBlock == NULL )
hb_errRT_BASE( EG_ARG, 3000, "Cannot modify INLINE method", "__CLSMODMSG", 0 );
else
hb_arraySet( s_pClasses[ pMethod->uiSprClass ].pInlines,
pMethod->uiData, pBlock );
}
else /* Modify METHOD */
{
pFuncSym = hb_objGetFuncSym( hb_param( 3, HB_IT_ANY ) );
if( pFuncSym == NULL )
hb_errRT_BASE( EG_ARG, 3000, NULL, "__CLSMODMSG", 0 );
else
pMethod->pFuncSym = pFuncSym;
}
}
}
}
}
/*
* <cClassName> := __objGetClsName( <hClass> | <oObj> )
*
* Returns class name of <oObj> or <hClass>
*/
HB_FUNC( __OBJGETCLSNAME )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT );
USHORT uiClass;
if( pObject )
uiClass = pObject->item.asArray.value->uiClass;
else
uiClass = ( USHORT ) hb_parni( 1 );
hb_retc( hb_clsName( uiClass ) );
}
/*
* <lRet> := __objHasMsg( <oObj>, <cSymbol> )
*
* Is <cSymbol> a valid message for the <oObj>
*/
HB_FUNC( __OBJHASMSG )
{
PHB_DYNS pMessage = hb_objGetMsgSym( hb_param( 2, HB_IT_ANY ) );
if( pMessage )
hb_retl( hb_objHasMessage( hb_param( 1, HB_IT_ANY ), pMessage ) );
else
hb_errRT_BASE_SubstR( EG_ARG, 1099, NULL, "__OBJHASMSG", HB_ERR_ARGS_BASEPARAMS );
}
/*
* <xRet> = __objSendMsg( <oObj>, <cSymbol>, <xArg,..>
*
* Send a message to an object
*/
HB_FUNC( __OBJSENDMSG )
{
PHB_DYNS pMessage = hb_objGetMsgSym( hb_param( 2, HB_IT_ANY ) );
if( pMessage )
{
USHORT uiPCount = hb_pcount();
USHORT uiParam;
hb_vmPushSymbol( pMessage->pSymbol ); /* Push message symbol */
hb_vmPush( hb_param( 1, HB_IT_ANY ) ); /* Push object */
for( uiParam = 3; uiParam <= uiPCount; ++uiParam ) /* Push arguments on stack */
{
hb_vmPush( hb_stackItemFromBase( uiParam ) );
}
hb_vmSend( ( USHORT ) ( uiPCount - 2 ) ); /* Execute message */
}
else
{
hb_errRT_BASE( EG_ARG, 3000, NULL, "__OBJSENDMSG", HB_ERR_ARGS_BASEPARAMS );
}
}
/*
* <oNew> := __objClone( <oOld> )
*
* Clone an object. Note the similarity with aClone ;-)
*/
HB_FUNC( __OBJCLONE )
{
PHB_ITEM pSrcObject = hb_param( 1, HB_IT_OBJECT );
PHB_ITEM pDstObject;
if( pSrcObject )
{
pDstObject = hb_arrayClone( pSrcObject );
hb_itemReturnRelease( pDstObject );
}
else
{
hb_errRT_BASE( EG_ARG, 3001, NULL, "__OBJCLONE", 0 );
}
}
/*
* <hClass> := __clsInstSuper( <cName> )
*
* Instance super class and return class handle
*/
HB_FUNC( __CLSINSTSUPER )
{
PHB_ITEM pItem = hb_param( 1, HB_IT_STRING | HB_IT_SYMBOL );
USHORT uiClassH = 0, uiClass;
PHB_SYMB pClassFuncSym = NULL;
if( pItem )
{
if( HB_IS_SYMBOL( pItem ) )
pClassFuncSym = hb_itemGetSymbol( pItem );
else if( HB_IS_STRING( pItem ) )
{
PHB_DYNS pDynSym = hb_dynsymFindName( hb_itemGetCPtr( pItem ) );
if( pDynSym )
pClassFuncSym = pDynSym->pSymbol;
}
pClassFuncSym = hb_vmGetRealFuncSym( pClassFuncSym );
}
if( pClassFuncSym )
{
uiClassH = hb_clsFindClassByFunc( pClassFuncSym );
if( uiClassH == 0 )
{
hb_vmPushSymbol( pClassFuncSym );
hb_vmPushNil();
hb_vmFunction( 0 ); /* Execute super class */
if( hb_vmRequestQuery() == 0 )
{
PHB_ITEM pObject = hb_stackReturnItem();
if( HB_IS_OBJECT( pObject ) )
{
uiClass = pObject->item.asArray.value->uiClass;
if( s_pClasses[ uiClass ].pClassFuncSym == pClassFuncSym )
uiClassH = uiClass;
else
{
uiClassH = hb_clsFindClassByFunc( pClassFuncSym );
/* still not found, try to send NEW() message */
if( uiClassH == 0 )
{
hb_vmPushSymbol( &s___msgNew );
hb_vmPush( pObject );
hb_vmSend( 0 );
pObject = hb_stackReturnItem();
if( HB_IS_OBJECT( pObject ) )
{
uiClass = pObject->item.asArray.value->uiClass;
if( s_pClasses[ uiClass ].pClassFuncSym == pClassFuncSym )
uiClassH = uiClass;
}
}
}
}
/* This disables destructor execution for this object */
if( uiClassH && HB_IS_OBJECT( pObject ) )
pObject->item.asArray.value->uiClass = 0;
else if( hb_vmRequestQuery() == 0 )
hb_errRT_BASE( EG_ARG, 3002, "Super class does not return an object", "__CLSINSTSUPER", 0 );
}
}
}
else
{
hb_errRT_BASE( EG_ARG, 3003, "Cannot find super class", "__CLSINSTSUPER", 0 );
}
hb_retni( uiClassH );
}
/*
* <lOK> = __clsAssocType( <hClass>, <cType> )
*
* Associate class with given basic type
*/
HB_FUNC( __CLSASSOCTYPE )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
PHB_ITEM pType = hb_param( 2, HB_IT_ANY );
BOOL fResult = FALSE;
if( uiClass && uiClass <= s_uiClasses && pType )
{
HB_TYPE nType = hb_clsGetItemType( pType, HB_IT_ANY );
if( nType != HB_IT_ANY )
{
switch( nType )
{
case HB_IT_ARRAY:
s_uiArrayClass = uiClass;
break;
case HB_IT_BLOCK:
s_uiBlockClass = uiClass;
break;
case HB_IT_STRING:
s_uiCharacterClass = uiClass;
break;
case HB_IT_DATE:
s_uiDateClass = uiClass;
break;
case HB_IT_HASH:
s_uiHashClass = uiClass;
break;
case HB_IT_LOGICAL:
s_uiLogicalClass = uiClass;
break;
case HB_IT_NIL:
s_uiNilClass = uiClass;
break;
case HB_IT_NUMERIC:
s_uiNumericClass = uiClass;
break;
case HB_IT_SYMBOL:
s_uiSymbolClass = uiClass;
break;
case HB_IT_POINTER:
s_uiPointerClass = uiClass;
break;
default:
uiClass = 0;
}
fResult = uiClass != 0;
}
}
hb_retl( fResult );
}
/*
* <nSeq> = __ClsCntClasses()
*
* Return number of classes
*/
HB_FUNC( __CLSCNTCLASSES )
{
hb_retni( ( int ) s_uiClasses );
}
/*
* <nSeq> = __cls_CntClsData( <hClass> )
*
* Return number of class datas
*/
HB_FUNC( __CLS_CNTCLSDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
hb_retni( uiClass && uiClass <= s_uiClasses ?
hb_arrayLen( s_pClasses[ uiClass ].pClassDatas ) : 0 );
}
/*
* <nSeq> = __cls_CntShrData( <hClass> )
*
* Return number of class datas
*/
HB_FUNC( __CLS_CNTSHRDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
hb_retni( uiClass && uiClass <= s_uiClasses ?
hb_arrayLen( s_pClasses[ uiClass ].pSharedDatas ) : 0 );
}
/*
* <nSeq> = __cls_CntData( <hClass> )
*
* Return number of datas
*/
HB_FUNC( __CLS_CNTDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
hb_retni( uiClass && uiClass <= s_uiClasses ?
s_pClasses[ uiClass ].uiDatas : 0 );
}
/*
* <nSeq> = __cls_DecData( <hClass> )
*
* Decrease number of datas and return new value
*/
HB_FUNC( __CLS_DECDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass && uiClass <= s_uiClasses &&
s_pClasses[ uiClass ].uiDatas > s_pClasses[ uiClass ].uiDataFirst )
{
if( !s_pClasses[ uiClass ].fLocked )
s_pClasses[ uiClass ].uiDatas--;
hb_retni( s_pClasses[ uiClass ].uiDatas - s_pClasses[ uiClass ].uiDataFirst );
}
else
hb_retni( 0 );
}
/*
* <nSeq> = __cls_IncData( <hClass> )
* Increase number of datas and return offset to new value
*/
HB_FUNC( __CLS_INCDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass && uiClass <= s_uiClasses )
{
if( !s_pClasses[ uiClass ].fLocked )
s_pClasses[ uiClass ].uiDatas++;
hb_retni( s_pClasses[ uiClass ].uiDatas - s_pClasses[ uiClass ].uiDataFirst );
}
else
hb_retni( 0 );
}
/* NOTE: Undocumented Clipper function */
/* see for parameter compatibility with Clipper. */
HB_FUNC( __CLASSNEW )
{
HB_FUNC_EXEC( __CLSNEW );
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSINSTANCE )
{
HB_FUNC_EXEC( __CLSINST );
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSADD )
{
HB_FUNC_EXEC( __CLSADDMSG );
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSNAME )
{
hb_retc( hb_clsName( ( USHORT ) hb_parni( 1 ) ) );
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSSEL )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
PHB_ITEM pReturn = hb_itemNew( NULL );
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ uiClass ];
PMETHOD pMethod = pClass->pMethods;
ULONG ulLimit = hb_clsMthNum( pClass ), ulPos = 0;
hb_arrayNew( pReturn, pClass->uiMethods ); /* Create a transfer array */
do
{
if( pMethod->pMessage ) /* Hash Entry used ? */
hb_arraySetC( pReturn, ++ulPos, pMethod->pMessage->pSymbol->szName );
++pMethod;
}
while( --ulLimit );
if( ulPos < ( ULONG ) pClass->uiMethods )
hb_arraySize( pReturn, ulPos );
}
hb_itemReturnRelease( pReturn );
}
/* to be used from Classes ERROR HANDLER method */
HB_FUNC( __GETMESSAGE )
{
hb_retc( hb_stackItem( hb_stackBaseItem()->item.asSymbol.stackstate->lBaseItem )->item.asSymbol.value->szName );
}
HB_FUNC( __CLSPARENT )
{
hb_retl( hb_clsIsParent( hb_parni( 1 ) , hb_parc( 2 ) ) );
}
HB_FUNC( __SENDER )
{
LONG lOffset = hb_stackBaseProcOffset( 2 );
if( lOffset > 0 )
{
PHB_ITEM pSelf = hb_stackItem( lOffset + 1 );
/* Is it inline method? */
if( lOffset > 0 && HB_IS_BLOCK( pSelf ) &&
hb_stackItem( lOffset )->item.asSymbol.value == &hb_symEval )
{
pSelf = hb_stackItem( hb_stackItem( lOffset )->
item.asSymbol.stackstate->lBaseItem + 1 );
}
if( HB_IS_OBJECT( pSelf ) )
{
hb_itemReturn( pSelf );
}
}
}
/*
* ClassH( <obj> ) -> <hClass>
*
* Returns class handle of <obj>
*/
HB_FUNC( __CLASSH )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_ANY );
hb_retni( pObject ? hb_objGetClassH( pObject ) : 0 );
}
/* ================================================ */
/*
* <hClass> := <obj>:ClassH()
*
* Returns class handle of <obj>
*/
static HARBOUR hb___msgClassH( void )
{
hb_retni( hb_stackBaseItem()->item.asSymbol.stackstate->uiClass );
}
/*
* <cClassName> := <obj>:ClassName()
*
* Return class name of <obj>. Can also be used for all types.
*/
static HARBOUR hb___msgClassName( void )
{
USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass;
if( uiClass )
hb_retc( s_pClasses[ uiClass ].szName );
else
hb_retc( hb_objGetClsName( hb_stackSelfItem() ) );
}
/*
* <aMessages> := <obj>:ClassSel()
*
* Returns all the messages in <obj>
*/
static HARBOUR hb___msgClassSel( void )
{
USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass;
if( uiClass && uiClass <= s_uiClasses )
{
PHB_ITEM pReturn = hb_itemNew( NULL );
PCLASS pClass = &s_pClasses[ uiClass ];
PMETHOD pMethod = pClass->pMethods;
ULONG ulLimit = hb_clsMthNum( pClass ), ulPos = 0;
USHORT nParam;
nParam = hb_pcount() > 0 ? ( USHORT ) hb_parni( 1 ) : HB_MSGLISTALL;
hb_arrayNew( pReturn, pClass->uiMethods );
do
{
if( pMethod->pMessage ) /* Hash Entry used ? */
{
if( ( nParam == HB_MSGLISTALL ) ||
( nParam == HB_MSGLISTCLASS &&
(
( pMethod->pFuncSym == &s___msgSetClsData ) ||
( pMethod->pFuncSym == &s___msgGetClsData ) ||
( pMethod->pFuncSym == &s___msgSetShrData ) ||
( pMethod->pFuncSym == &s___msgGetShrData )
)
) ||
( nParam == HB_MSGLISTPURE &&
!(
( pMethod->pFuncSym == &s___msgSetClsData ) ||
( pMethod->pFuncSym == &s___msgGetClsData ) ||
( pMethod->pFuncSym == &s___msgSetShrData ) ||
( pMethod->pFuncSym == &s___msgGetShrData )
)
)
)
{
hb_arraySetC( pReturn, ++ulPos,
pMethod->pMessage->pSymbol->szName );
}
}
++pMethod;
}
while( --ulLimit && ulPos < ( ULONG ) pClass->uiMethods );
if( ulPos < ( ULONG ) pClass->uiMethods )
hb_arraySize( pReturn, ulPos );
hb_itemReturnRelease( pReturn );
}
}
#if 0
/*
* __msgClass()
*
* Internal function to return Self at Self:Class call (classy compatibility)
*/
static HARBOUR hb___msgClass( void )
{
hb_itemReturnForward( hb_stackSelfItem() );
}
/* Added by JfL&RaC
* <logical> <= <obj>:IsDerivedFrom( xParam )
*
* Return true if <obj> is derived from xParam.
* xParam can be either an obj or a classname
*/
static HARBOUR hb___msgClassParent( void )
{
char * szParentName = NULL;
PHB_ITEM pItem;
USHORT uiClass;
uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass;
pItemParam = hb_param( 1, HB_IT_ANY );
if( pItemParam )
{
if( HB_IS_OBJECT( pItemParam ) )
szParentName = hb_objGetClsName( pItemParam );
else if( HB_IS_STRING( pItemParam ) )
szParentName = hb_parc( pItemParam );
}
hb_retl( szParentName && hb_clsIsParent( uiClass , szParentName ) );
}
#endif
/*
* __msgEvalInline()
*
* Internal function executed for inline methods
*/
static HARBOUR hb___msgEvalInline( void )
{
PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate;
PCLASS pClass = &s_pClasses[ pStack->uiClass ];
PMETHOD pMethod = pClass->pMethods + pStack->uiMethod;
USHORT uiPCount = hb_pcount(), uiParam;
PHB_ITEM pBlock;
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( hb_arrayGetItemPtr( s_pClasses[ pMethod->uiSprClass ].pInlines,
pMethod->uiData ) );
pBlock = hb_stackItemFromTop( -1 ); /* Push block */
pBlock->item.asBlock.hclass = pStack->uiClass;
pBlock->item.asBlock.method = pStack->uiMethod;
hb_vmPush( hb_stackSelfItem() ); /* Push self as first argument */
for( uiParam = 1; uiParam <= uiPCount; uiParam++ )
{
hb_vmPush( hb_stackItemFromBase( uiParam ) );
}
hb_vmSend( uiPCount + 1 );
}
static HARBOUR hb___msgPerform( void )
{
PHB_ITEM pItem = hb_param( 1, HB_IT_ANY );
USHORT uiPCount = hb_pcount(), uiParam;
PHB_SYMB pSym = NULL;
if( pItem )
{
if( HB_IS_SYMBOL( pItem ) )
pSym = pItem->item.asSymbol.value;
else if( HB_IS_OBJECT( pItem ) &&
s_pClasses[ pItem->item.asArray.value->uiClass ].pClassSym ==
s___msgSymbol.pDynSym )
{
/* Dirty hack */
pItem = hb_arrayGetItemPtr( pItem, 1 );
if( pItem && HB_IS_SYMBOL( pItem ) )
pSym = pItem->item.asSymbol.value;
}
if( pSym )
{
hb_vmPushSymbol( pSym );
hb_vmPush( hb_stackSelfItem() );
for( uiParam = 2; uiParam <= uiPCount; uiParam++ )
{
hb_vmPush( hb_stackItemFromBase( uiParam ) );
}
hb_vmSend( uiPCount - 1 );
}
}
}
static HARBOUR hb___msgDelegate( void )
{
PCLASS pClass = &s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
PHB_SYMB pExecSym = pClass->pMethods[ pMethod->uiData ].pFuncSym;
if( pExecSym && pExecSym->value.pFunPtr )
{
if( pExecSym->scope.value & HB_FS_PCODEFUNC )
/* Running pCode dynamic function from .HRB */
hb_vmExecute( pExecSym->value.pCodeFunc->pCode,
pExecSym->value.pCodeFunc->pSymbols );
else
pExecSym->value.pFunPtr();
}
else
{
hb___msgNoMethod();
}
}
/*
* __msgNoMethod()
*
* Internal function for generating error when not existing message is sent
*/
static HARBOUR hb___msgNoMethod( void )
{
PHB_SYMB pSym = hb_itemGetSymbol( hb_stackBaseItem() );
#if 1 /* Clipper compatible error message */
if( pSym->szName[ 0 ] == '_' )
hb_errRT_BASE_SubstR( EG_NOVARMETHOD, 1005, NULL, pSym->szName + 1, HB_ERR_ARGS_SELFPARAMS );
else
hb_errRT_BASE_SubstR( EG_NOMETHOD, 1004, NULL, pSym->szName, HB_ERR_ARGS_SELFPARAMS );
#else
char szDesc[ 128 ];
if( pSym->szName[ 0 ] == '_' )
{
snprintf( szDesc, sizeof( szDesc ), "Class: '%s' has no property", hb_objGetClsName( hb_stackSelfItem() ) );
hb_errRT_BASE_SubstR( EG_NOVARMETHOD, 1005, szDesc, pSym->szName + 1, HB_ERR_ARGS_BASEPARAMS );
}
else
{
snprintf( szDesc, sizeof( szDesc ), "Class: '%s' has no exported method", hb_objGetClsName( hb_stackSelfItem() ) );
hb_errRT_BASE_SubstR( EG_NOMETHOD, 1004, szDesc, pSym->szName, HB_ERR_ARGS_BASEPARAMS );
}
#endif
}
/*
* __msgScopeErr()
*
* Internal function for generating error when not existing message is sent
*/
static HARBOUR hb___msgScopeErr( void )
{
char * pszProcName;
PHB_ITEM pObject = hb_stackSelfItem();
PMETHOD pMethod = s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ].pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
pszProcName = hb_xstrcpy( NULL, hb_objGetClsName( pObject ), ":",
pMethod->pMessage->pSymbol->szName, NULL );
if( pMethod->uiScope & HB_OO_CLSTP_HIDDEN )
hb_errRT_BASE( EG_NOMETHOD, 41, "Scope violation (hidden)", pszProcName, 0 );
else
hb_errRT_BASE( EG_NOMETHOD, 42, "Scope violation (protected)", pszProcName, 0 );
hb_xfree( pszProcName );
}
static HARBOUR hb___msgTypeErr( void )
{
char * pszProcName;
PHB_ITEM pObject = hb_stackSelfItem();
PMETHOD pMethod = s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ].pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
pszProcName = hb_xstrcpy( NULL, hb_objGetClsName( pObject ), ":",
pMethod->pMessage->pSymbol->szName + 1, NULL );
hb_errRT_BASE( EG_NOMETHOD, 44, "Assigned value is wrong class", pszProcName, HB_ERR_ARGS_BASEPARAMS );
hb_xfree( pszProcName );
}
/*
* __msgSuper()
*
* Internal function to return a superobject
*/
static HARBOUR hb___msgSuper( void )
{
PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate;
hb_clsMakeSuperObject( hb_stackReturnItem(), hb_stackSelfItem(),
s_pClasses[ pStack->uiClass ].pMethods[ pStack->uiMethod ].uiSprClass );
}
/*
* __msgRealClass()
*
* Internal function to return a superobject of class where the method was
* defined
*/
static HARBOUR hb___msgRealClass( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
USHORT uiClass = hb_clsSenderMethodClasss();
USHORT uiCurClass = hb_objGetClassH( pObject );
if( uiClass && uiClass != uiCurClass &&
hb_clsSenderObjectClasss() == uiCurClass )
{
hb_clsMakeSuperObject( hb_stackReturnItem(), pObject, uiClass );
}
else
{
hb_itemReturnForward( pObject );
}
}
/*
* __msgGetClsData()
*
* Internal function to return a CLASSDATA
*/
static HARBOUR hb___msgGetClsData( void )
{
PCLASS pClass = &s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
hb_arrayGet( pClass->pClassDatas, pMethod->uiData, hb_stackReturnItem() );
}
/*
* __msgSetClsData()
*
* Internal function to set a CLASSDATA
*/
static HARBOUR hb___msgSetClsData( void )
{
PCLASS pClass = &s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
PHB_ITEM pReturn = hb_param( 1, HB_IT_ANY );
if( !pReturn )
hb_arrayGet( pClass->pClassDatas, pMethod->uiData, hb_stackReturnItem() );
else
{
if( pMethod->itemType &&
! ( pMethod->itemType & HB_ITEM_TYPERAW( pReturn ) ) )
{
if( pMethod->itemType == HB_IT_NUMINT && HB_IS_NUMERIC( pReturn ) )
hb_itemPutNInt( pReturn, hb_itemGetNInt( pReturn ) );
else
{
(s___msgTypeErr.value.pFunPtr)();
return;
}
}
hb_arraySet( pClass->pClassDatas, pMethod->uiData, pReturn );
hb_itemReturnForward( pReturn );
}
}
/*
* __msgGetShrData()
*
* Internal function to return a SHAREDDATA
*/
static HARBOUR hb___msgGetShrData( void )
{
PCLASS pClass = &s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
hb_arrayGet( s_pClasses[ pMethod->uiSprClass ].pSharedDatas,
pMethod->uiData, hb_stackReturnItem() );
}
/*
* __msgSetShrData()
*
* Internal function to set a SHAREDDATA
*/
static HARBOUR hb___msgSetShrData( void )
{
PCLASS pClass = &s_pClasses[
hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
PHB_ITEM pReturn = hb_param( 1, HB_IT_ANY );
if( !pReturn )
hb_arrayGet( s_pClasses[ pMethod->uiSprClass ].pSharedDatas,
pMethod->uiData, hb_stackReturnItem() );
else
{
if( pMethod->itemType &&
! ( pMethod->itemType & HB_ITEM_TYPERAW( pReturn ) ) )
{
if( pMethod->itemType == HB_IT_NUMINT && HB_IS_NUMERIC( pReturn ) )
hb_itemPutNInt( pReturn, hb_itemGetNInt( pReturn ) );
else
{
(s___msgTypeErr.value.pFunPtr)();
return;
}
}
hb_arraySet( s_pClasses[ pMethod->uiSprClass ].pSharedDatas,
pMethod->uiData, pReturn );
hb_itemReturnForward( pReturn );
}
}
/*
* __msgGetData()
*
* Internal function to return a DATA
*/
static HARBOUR hb___msgGetData( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
if( HB_IS_ARRAY( pObject ) )
{
USHORT uiObjClass = pObject->item.asArray.value->uiClass;
USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass;
PCLASS pClass = &s_pClasses[ uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
ULONG ulIndex = pMethod->uiData;
if( uiClass != uiObjClass )
{
ulIndex += hb_clsParentInstanceOffset( &s_pClasses[ uiObjClass ],
s_pClasses[ pMethod->uiSprClass ].pClassSym );
}
else
{
ulIndex += pMethod->uiOffset;
}
hb_arrayGet( pObject, ulIndex, hb_stackReturnItem() );
}
}
/*
* __msgSetData()
*
* Internal function to set a DATA
*/
static HARBOUR hb___msgSetData( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
if( HB_IS_ARRAY( pObject ) )
{
PHB_ITEM pReturn = hb_param( 1, HB_IT_ANY );
USHORT uiObjClass = pObject->item.asArray.value->uiClass;
USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass;
PCLASS pClass = &s_pClasses[ uiClass ];
PMETHOD pMethod = pClass->pMethods +
hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
ULONG ulIndex = pMethod->uiData;
if( uiClass != uiObjClass )
{
ulIndex += hb_clsParentInstanceOffset( &s_pClasses[ uiObjClass ],
s_pClasses[ pMethod->uiSprClass ].pClassSym );
}
else
{
ulIndex += pMethod->uiOffset;
}
if( !pReturn )
hb_arrayGet( pObject, ulIndex, hb_stackReturnItem() );
else
{
if( pMethod->itemType &&
! ( pMethod->itemType & HB_ITEM_TYPERAW( pReturn ) ) )
{
if( pMethod->itemType == HB_IT_NUMINT && HB_IS_NUMERIC( pReturn ) )
hb_itemPutNInt( pReturn, hb_itemGetNInt( pReturn ) );
else
{
(s___msgTypeErr.value.pFunPtr)();
return;
}
}
/* will arise only if the class has been modified after first instance */
if( ulIndex > hb_arrayLen( pObject ) ) /* Resize needed ? */
hb_arraySize( pObject, ulIndex ); /* Make large enough */
hb_arraySet( pObject, ulIndex, pReturn );
hb_itemReturnForward( pReturn );
}
}
}
/* No comment :-) */
static HARBOUR hb___msgVirtual( void )
{
/* hb_ret(); */ /* NOTE: It's safe to comment this out */
;
}
static HARBOUR hb___msgNull( void )
{
;
}
#ifndef HB_NO_PROFILER
void hb_mthAddTime( ULONG ulClockTicks )
{
PMETHOD pMethod = s_pClasses[ hb_objGetClassH( hb_stackSelfItem() ) ].
pMethods;
if( pMethod )
{
pMethod += hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod;
pMethod->ulCalls++;
pMethod->ulTime += ulClockTicks;
}
}
#endif
HB_FUNC( __GETMSGPRF ) /* profiler: returns a method called and consumed times */
/* ( nClass, cMsg ) --> aMethodInfo { nTimes, nTime } */
{
#ifndef HB_NO_PROFILER
USHORT uiClass = ( USHORT ) hb_parni( 1 );
char * cMsg = hb_parc( 2 );
hb_reta( 2 );
if( uiClass && uiClass <= s_uiClasses && cMsg && *cMsg )
{
PHB_DYNS pMsg = hb_dynsymFindName( cMsg );
if( pMsg )
{
PMETHOD pMethod = hb_clsFindMsg( &s_pClasses[ uiClass ], pMsg );
if( pMethod )
{
hb_stornl( pMethod->ulCalls, -1, 1 );
hb_stornl( pMethod->ulTime, -1, 2 );
return;
}
}
}
#else
hb_reta( 2 );
#endif
hb_stornl( 0, -1, 1 );
hb_stornl( 0, -1, 2 );
}
/* __ClsGetProperties( nClassHandle ) --> aPropertiesNames
* Notice that this function works quite similar to __CLASSSEL()
* except that just returns the name of the datas and methods
* that have been declared as PROPERTY (or PERSISTENT) */
HB_FUNC( __CLSGETPROPERTIES )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
PHB_ITEM pReturn = hb_itemNew( NULL );
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ uiClass ];
PMETHOD pMethod;
ULONG ulLimit, ulCount;
ulCount = 0;
ulLimit = hb_clsMthNum( pClass );
pMethod = pClass->pMethods;
do
{
if( pMethod->pMessage && ( pMethod->uiScope & HB_OO_CLSTP_PERSIST ) )
++ulCount;
++pMethod;
}
while( --ulLimit );
hb_arrayNew( pReturn, ulCount );
ulCount = 0;
ulLimit = hb_clsMthNum( pClass );
pMethod = pClass->pMethods;
do
{
if( pMethod->pMessage && ( pMethod->uiScope & HB_OO_CLSTP_PERSIST ) )
hb_arraySetC( pReturn, ++ulCount, pMethod->pMessage->pSymbol->szName );
++pMethod;
}
while( --ulLimit );
}
hb_itemReturnRelease( pReturn );
}
/* Real dirty function, though very usefull under certain circunstances:
* It allows to change the class handle of an object into another class handle,
* so the object behaves like a different Class of object.
* Based on objects.lib SetClsHandle() */
HB_FUNC( HB_SETCLSHANDLE ) /* ( oObject, nClassHandle ) --> nPrevClassHandle */
{
PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT );
USHORT uiPrevClassHandle = 0;
if( pObject )
{
USHORT uiClass = ( USHORT ) hb_parni( 2 );
uiPrevClassHandle = pObject->item.asArray.value->uiClass;
if( uiClass <= s_uiClasses )
pObject->item.asArray.value->uiClass = uiClass;
}
hb_retnl( uiPrevClassHandle );
}
/* Harbour equivalent for Clipper internal __mdCreate() */
USHORT hb_clsCreate( USHORT usSize, const char * szClassName )
{
return hb_clsNew( szClassName, usSize, NULL, NULL, FALSE );
}
/* Harbour equivalent for Clipper internal __mdAdd() */
void hb_clsAdd( USHORT usClassH, const char * szMethodName, PHB_FUNC pFuncPtr )
{
PHB_SYMB pExecSym;
PHB_ITEM pFuncItem;
/*
* We can use empty name "" for this symbol in hb_symbolNew()
* It's only envelop for function with additional execution
* information for HVM not registered symbol. [druzus]
*/
pExecSym = hb_symbolNew( "" );
pExecSym->value.pFunPtr = pFuncPtr;
pFuncItem = hb_itemPutSymbol( NULL, pExecSym );
hb_clsAddMsg( usClassH, szMethodName, HB_OO_MSG_METHOD, 0, pFuncItem, NULL );
hb_itemRelease( pFuncItem );
}
/* Harbour equivalent for Clipper internal __mdAssociate() */
void hb_clsAssociate( USHORT usClassH )
{
PHB_ITEM pSelf = hb_clsInst( usClassH );
if( pSelf )
hb_itemReturnRelease( pSelf );
}
#if 1
/*
* __CLS_PARAM() and __CLS_PAR00() functions are only for backward binary
* compatibility. They will be removed in the future so please do not use
* them.
*/
HB_FUNC( __CLS_PARAM )
{
PHB_ITEM array;
USHORT uiParam = ( USHORT ) hb_pcount();
USHORT n;
if( uiParam >= 1 )
{
array = hb_itemArrayNew( uiParam );
for( n = 1; n <= uiParam; n++ )
hb_arraySet( array, n, hb_param( n, HB_IT_ANY ) );
}
else
{
array = hb_itemArrayNew( 1 );
hb_arraySetC( array, 1, "HBObject" );
}
hb_itemReturnRelease( array );
}
HB_FUNC( __CLS_PAR00 )
{
PHB_ITEM array;
USHORT uiParam = ( USHORT ) hb_pcount();
USHORT n;
array = hb_itemArrayNew( uiParam );
for( n = 1; n <= uiParam; n++ )
hb_arraySet( array, n, hb_param( n, HB_IT_ANY ) );
hb_itemReturnRelease( array );
}
/*
* This function is only for backward binary compatibility
* It will be removed in the future so please do not use it.
* Use hb_objHasMessage() instead.
*/
#if defined(__cplusplus)
extern "C" BOOL hb_objGetpMethod( PHB_ITEM pObject, PHB_SYMB pMessage );
#endif
BOOL hb_objGetpMethod( PHB_ITEM pObject, PHB_SYMB pMessage )
{
return hb_objHasMessage( pObject, pMessage->pDynSym );
}
#endif
#if 0
/*
* return real function name ignoring aliasing
*/
const char * hb_clsRealMethodName( void )
{
LONG lOffset = hb_stackBaseProcOffset( 1 );
const char * szName = NULL;
if( lOffset > 0 )
{
PHB_STACK_STATE pStack = hb_stackItem( lOffset )->item.asSymbol.stackstate;
if( pStack->uiClass && pStack->uiClass <= s_uiClasses )
{
PCLASS pClass = &s_pClasses[ pStack->uiClass ];
if( ( ULONG ) pStack->uiMethod < hb_clsMthNum( pClass ) )
{
PMETHOD pMethod = pClass->pMethods + pStack->uiMethod;
if( pMethod->pMessage )
szName = pMethod->pMessage->pSymbol->szName;
}
}
}
return szName;
}
#endif
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