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harbour-core/harbour/source/vm/classes.c
Przemyslaw Czerpak 60d2420387 2006-06-20 17:22 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/source/vm/classes.c
    ! fixed memory leak when CLASSSEL() message was sent to non object
      item
2006-06-20 15:41:53 +00:00

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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>
* hb___msgEval()
* __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
"!" = __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_DYNS pMessage; /* Method Symbolic name */
PHB_SYMB pFuncSym; /* Function symbol */
USHORT uiData; /* Item position for data (Harbour like, begin from 1) */
USHORT uiDataShared; /* Item position for datashared (original pos within Shared Class) */
USHORT uiSprClass; /* Originalclass'handel (super or current class'handel if not herited). */ /*Added by RAC&JF*/
USHORT uiScope; /* Scoping value */
PHB_ITEM pInitValue; /* Init Value for data */
USHORT bClsDataInitiated; /* There is one value assigned at init time */
USHORT bIsPersistent; /* persistence support */
ULONG ulCalls; /* profiler support */
ULONG ulTime; /* profiler support */
ULONG ulRecurse; /* profiler support */
} METHOD, * PMETHOD;
typedef struct
{
char * szName; /* Class name */
USHORT uiDatas; /* Total Data Counter */
USHORT uiDataFirst; /* First uiData from this class */
PMETHOD pMethods;
USHORT uiMethods; /* Total Method initialised Counter */
USHORT uiHashKey;
USHORT uiDatasShared; /* Total shared Class data within Class data */
PHB_ITEM pClassDatas; /* Harbour Array for ClassDatas and shared */
PHB_ITEM pInlines; /* Array for inline codeblocks */
PHB_SYMB pFunError; /* error handler for not defined messages */
ULONG ulOpFlags; /* Flags for overloaded operators */
} CLASS, * PCLASS;
#define BASE_METHODS 100 /* starting maximum number of message */
#define BUCKET 5
#define HASH_KEY ( BASE_METHODS / BUCKET )
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___msgNoMethod( void );
static HARBOUR hb___msgClsH( void );
static HARBOUR hb___msgClsName( void );
static HARBOUR hb___msgClsSel( void );
static HARBOUR hb___msgEval( void );
/* static HARBOUR hb___msgClass( void ); */
/* static HARBOUR hb___msgClsParent( 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 }, /* 01 */
{ "__OPMINUS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 02 */
{ "__OPMULT", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 03 */
{ "__OPDIVIDE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 04 */
{ "__OPMOD", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 05 */
{ "__OPPOWER", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 06 */
{ "__OPINC", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 07 */
{ "__OPDEC", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 08 */
{ "__OPEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 09 */
{ "__OPEXACTEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 10 */
{ "__OPNOTEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 11 */
{ "__OPLESS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 12 */
{ "__OPLESSEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 13 */
{ "__OPGREATER", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 14 */
{ "__OPGREATEREQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 15 */
{ "__OPADDIGN", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 16 */
{ "__OPINSTRING", {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 */
{ "__ENUMNEXT", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 22 */
{ "__ENUMPREV", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 23 */
{ "__ENUMINDEX", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 24 */
{ "__ENUMBASE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 25 */
{ "__ENUMVALUE", {HB_FS_MESSAGE}, {NULL}, NULL } /* 26 */
};
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___msgNoMethod = { "__msgNoMethod", {HB_FS_MESSAGE}, {hb___msgNoMethod}, NULL };
static HB_SYMB s___msgClassName = { "CLASSNAME", {HB_FS_MESSAGE}, {hb___msgClsName}, NULL };
static HB_SYMB s___msgClassH = { "CLASSH", {HB_FS_MESSAGE}, {hb___msgClsH}, NULL };
static HB_SYMB s___msgClassSel = { "CLASSSEL", {HB_FS_MESSAGE}, {hb___msgClsSel}, NULL };
static HB_SYMB s___msgEval = { "EVAL", {HB_FS_MESSAGE}, {hb___msgEval}, NULL };
/*
static HB_SYMB s___msgClsParent = { "ISDERIVEDFROM", {HB_FS_MESSAGE}, {hb___msgClsParent}, NULL };
static HB_SYMB s___msgClass = { "CLASS", {HB_FS_MESSAGE}, {hb___msgClass}, NULL };
*/
static PCLASS s_pClasses = NULL;
static USHORT s_uiClasses = 0;
static PMETHOD s_pMethod = NULL; /* TOFIX: The object engine is not thread safe because of this. [vszakats] */
/* All functions contained in classes.c */
static PHB_ITEM hb_clsInst( USHORT uiClass );
#if 0
/* see function definition */
static void hb_clsScope( PHB_ITEM pObject, PMETHOD pMethod );
#endif
static ULONG hb_cls_MsgToNum( PHB_DYNS pMsg );
static void hb_clsDictRealloc( PCLASS pClass );
static void hb_clsRelease( PCLASS );
#ifdef HB_CLS_ENFORCERO
static PMETHOD hb_objGetpMethod( PHB_ITEM, PHB_SYMB );
#endif
/* ================================================ */
/*
* hb_clsDictRealloc( PCLASS )
*
* Realloc (widen) class
*/
static void hb_clsDictRealloc( PCLASS pClass )
{
HB_TRACE(HB_TR_DEBUG, ("hb_clsDictRealloc(%p)", pClass));
if( pClass )
{
PMETHOD pNewMethods;
USHORT uiNewHashKey = pClass->uiHashKey * 2 ;
USHORT ui;
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
do
{
uiNewHashKey += ( USHORT ) HASH_KEY ;
pNewMethods = ( PMETHOD ) hb_xgrab( uiNewHashKey * BUCKET * sizeof( METHOD ) );
memset( pNewMethods, 0, uiNewHashKey * BUCKET * sizeof( METHOD ) );
for( ui = 0; ui < uiLimit; ui++ )
{
PHB_DYNS pMessage = ( PHB_DYNS ) pClass->pMethods[ ui ].pMessage;
if( pMessage )
{
USHORT uiBucket;
USHORT uiAt = ( USHORT ) ( ( hb_cls_MsgToNum( pMessage ) % uiNewHashKey ) * BUCKET );
for( uiBucket = 0; uiBucket < BUCKET; uiBucket++ )
{
if( pNewMethods[ uiAt+uiBucket ].pMessage == 0 ) /* this message position is empty */
{
hb_xmemcpy( pNewMethods + (uiAt+uiBucket), pClass->pMethods + ui, sizeof( METHOD ) );
break;
}
}
/* Not enough go back to the beginning */
if( uiBucket >= BUCKET ) /*&& nOccurs++ < 5)*/
{
hb_xfree( pNewMethods );
break;
}
/*else
if( nOccurs < 5 )
nOccurs = 0;
else
{
hb_xfree( pNewMethods );
hb_errInternal( 9999, "Not able to realloc classmessage! __clsDictRealloc", NULL, NULL );
break;
}*/
}
}
} while( ui < uiLimit );
pClass->uiHashKey = uiNewHashKey;
hb_xfree( pClass->pMethods );
pClass->pMethods = pNewMethods;
}
}
/*
* initialize Classy/OO system at HVM startup
*/
void hb_clsInit( void )
{
PHB_SYMB pOpSym;
USHORT uiOperator;
for( uiOperator = 0, pOpSym = s_opSymbols; uiOperator <= HB_OO_MAX_OPERATOR;
++uiOperator, ++pOpSym )
{
pOpSym->pDynSym = hb_dynsymGetCase( pOpSym->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___msgEval.pDynSym = hb_dynsymGetCase( s___msgEval.szName );
/*
s___msgClsParent.pDynSym = hb_dynsymGetCase( s___msgClsParent.szName );
s___msgClass.pDynSym = hb_dynsymGetCase( s___msgClass.szName );
*/
}
/*
* hb_clsRelease( <pClass> )
*
* Release a class from memory
*/
static void hb_clsRelease( PCLASS pClass )
{
USHORT uiAt;
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
PMETHOD pMeth = pClass->pMethods;
HB_TRACE(HB_TR_DEBUG, ("hb_clsRelease(%p)", pClass));
for( uiAt = 0; uiAt < uiLimit; uiAt++, pMeth++ )
{
if( pMeth->pInitValue )
{
hb_itemRelease( pMeth->pInitValue );
}
}
hb_xfree( pClass->szName );
hb_xfree( pClass->pMethods );
hb_itemRelease( pClass->pClassDatas );
hb_itemRelease( pClass->pInlines );
}
/*
* hb_clsReleaseAll()
*
* Release all classes
*/
void hb_clsReleaseAll( void )
{
SHORT uiClass;
HB_TRACE(HB_TR_DEBUG, ("hb_clsReleaseAll()"));
for( uiClass = 0 ; uiClass < s_uiClasses ; uiClass++ )
{
hb_clsRelease( s_pClasses + uiClass );
}
if( s_pClasses )
{
hb_xfree( s_pClasses );
}
s_uiClasses = 0;
s_pClasses = NULL;
}
/* Mark all internal data as used so it will not be released by the
* garbage collector
*/
void hb_clsIsClassRef( void )
{
USHORT uiClass = s_uiClasses;
PCLASS pClass = s_pClasses;
USHORT uiAt;
USHORT uiLimit;
PMETHOD pMeth;
HB_TRACE(HB_TR_DEBUG, ("hb_clsIsClassRef()"));
while( uiClass-- )
{
if( pClass->pInlines )
{
if( HB_IS_GCITEM( pClass->pInlines ) )
hb_gcItemRef( pClass->pInlines );
}
if( pClass->pClassDatas )
{
if( HB_IS_GCITEM( pClass->pClassDatas ) )
hb_gcItemRef( pClass->pClassDatas );
}
uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
pMeth = pClass->pMethods;
for( uiAt = 0; uiAt < uiLimit; uiAt++, pMeth++ )
{
if( pMeth->pInitValue )
{
if( HB_IS_GCITEM( pMeth->pInitValue ) )
hb_gcItemRef( pMeth->pInitValue );
}
}
++pClass;
}
}
/* Currently (2004.04.02) this function is not used
it is commented out to suppress warning message in gcc
*/
#if 0
static void hb_clsScope( PHB_ITEM pObject, PMETHOD pMethod )
{
PHB_ITEM * pBase = hb_stack.pBase;
PHB_ITEM pCaller;
LONG iLevel = 1;
BOOL bRetVal = FALSE ;
USHORT uiScope = pMethod->uiScope;
PHB_DYNS pMessage = pMethod->pMessage;
char szName[ HB_SYMBOL_NAME_LEN + HB_SYMBOL_NAME_LEN + 32 ];
char * szCallerNameMsg;
char * szCallerNameObject;
char * szSelfNameMsg;
char * szSelfNameObject; /* debug */
char * szSelfNameRealClass;
if ( (( uiScope & HB_OO_CLSTP_PROTECTED ) ) ||
(( uiScope & HB_OO_CLSTP_HIDDEN ) ) ||
(( uiScope & HB_OO_CLSTP_READONLY ) )
)
{
szSelfNameObject = hb_objGetClsName( pObject ); /* debug */
szSelfNameMsg = pMessage->pSymbol->szName ;
szSelfNameRealClass = hb_objGetRealClsName( pObject, pMessage->pSymbol->szName );
while( ( iLevel-- > 0 ) && pBase != hb_stack.pItems )
pBase = hb_stack.pItems + ( *pBase )->item.asSymbol.stackbase;
szCallerNameMsg = ( *pBase )->item.asSymbol.value->szName ;
/* Is it an inline ? if so back one more ... */
if ( ( strcmp( szCallerNameMsg, "__EVAL" ) == 0 ) && pBase != hb_stack.pItems)
{
pBase = hb_stack.pItems + ( *pBase )->item.asSymbol.stackbase;
szCallerNameMsg = ( *pBase )->item.asSymbol.value->szName ;
}
/* Is it an eval ? if so back another one more ... */
if ( ( strcmp( szCallerNameMsg, "EVAL" ) == 0 ) && pBase != hb_stack.pItems)
{
pBase = hb_stack.pItems + ( *pBase )->item.asSymbol.stackbase;
szCallerNameMsg = ( *pBase )->item.asSymbol.value->szName ;
}
/* Is it an Aeval ? if so back another one more ... */
if ( ( strcmp( szCallerNameMsg, "AEVAL" ) == 0 ) && pBase != hb_stack.pItems)
{
pBase = hb_stack.pItems + ( *pBase )->item.asSymbol.stackbase;
szCallerNameMsg = ( *pBase )->item.asSymbol.value->szName ;
}
if( iLevel == -1 )
{
/* Now get the callers ... */
pCaller = * (pBase+1 ) ;
szCallerNameObject = hb_objGetRealClsName( pCaller, szCallerNameMsg ) ;
strcpy( szName, szCallerNameObject );
strcat( szName, ":" );
strcat( szName, szCallerNameMsg );
strcat( szName, ">" );
strcat( szName, szSelfNameRealClass );
strcat( szName, ">" );
strcat( szName, szSelfNameObject );
strcat( szName, ":" );
strcat( szName, szSelfNameMsg );
/*strcpy( szName, szSelfNameRealClass ); */
/*strcat( szName, ":" ); */
/*strcat( szName, szSelfNameMsg ); */
if ( uiScope & HB_OO_CLSTP_PROTECTED )
{
if( ( *( pBase+1 ) )->type == HB_IT_ARRAY ) /* is the sender an object */
{
/* Trying to access a protected Msg from outside the object ... */
if ( strcmp( szCallerNameObject, szSelfNameRealClass ) != 0 )
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (protected 1)", szName, 0 );
}
else
{
/* If called from a function ... protected violation ! */
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (protected 0)", szName, 0 );
}
}
if ( uiScope & HB_OO_CLSTP_HIDDEN )
{
if( ( *( pBase+1 ) )->type == HB_IT_ARRAY ) /* is the sender an object */
{
/* Trying to access a protected Msg from outside the object ... */
if ( strcmp( szCallerNameObject, szSelfNameRealClass ) != 0 )
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (Hidden 1)", szName, 0 );
else
{
/* Now as it is an hidden Msg, it can only be called from */
/* a method of its original class */
if (! (hb_objGetRealClsName( pCaller, szCallerNameMsg) == szSelfNameRealClass) )
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (Hidden 2)", szName, 0 );
}
}
else
{
/* If called from a function ... Hidden violation ! */
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (Hidden 0)", szName, 0 );
}
}
if ( uiScope & HB_OO_CLSTP_READONLY )
{
if( ( pMethod->pFuncSym == s___msgSetData ) ||
( pMethod->pFuncSym == s___msgSetClsData ) ||
( pMethod->pFuncSym == s___msgSetShrData ) )
bRetVal = TRUE;
if (bRetVal)
{
if( ( *( pBase+1 ) )->type == HB_IT_ARRAY ) /* is the sender an object */
{
/* Trying to assign a RO Msg from outside the object ... */
if ( strcmp( szCallerNameObject, szSelfNameRealClass ) != 0 )
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (ReadOnly)", szName, 0 );
else
{
#ifdef HB_CLS_ENFORCERO /* Not enabled by default */
/* can only be called from a Constructor */
/* ok Now is it a CTOR ? */
PMETHOD pCallerMethod ;
PHB_DYNS pCallerMsg = hb_dynsymGet( szCallerNameMsg );
pCallerMethod = hb_objGetpMethod( pCaller, pCallerMsg->pSymbol );
if ( pCallerMethod )
{
if ( ! (pCallerMethod->uiScope & HB_OO_CLSTP_CTOR) )
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (ReadOnly)", szName, 0 );
}
#endif
}
}
else
{
/* If called from a function ... ReadOnly violation ! */
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (ReadOnly 0)", szName, 0 );
}
}
}
}
}
}
#endif
ULONG hb_cls_MsgToNum( PHB_DYNS pMsg )
{
USHORT i;
ULONG nRetVal = 0;
for( i = 0; pMsg->pSymbol->szName[ i ] != '\0'; i++)
nRetVal = ( nRetVal << 1 ) + pMsg->pSymbol->szName[ i ];
return nRetVal;
}
BOOL hb_clsIsParent( USHORT uiClass, char * szParentName )
{
USHORT uiAt, uiLimit;
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
if( strcmp( pClass->szName, szParentName ) == 0 )
return TRUE;
for( uiAt = 0; uiAt < uiLimit; uiAt++ )
{
if( ( pClass->pMethods[ uiAt ].uiScope & HB_OO_CLSTP_CLASS ) == HB_OO_CLSTP_CLASS )
{
if( strcmp( pClass->pMethods[ uiAt ].pMessage->pSymbol->szName, szParentName ) == 0 )
return TRUE;
}
}
}
return FALSE;
}
USHORT hb_objGetClass( PHB_ITEM pItem )
{
if( pItem && HB_IS_ARRAY( pItem ) )
return pItem->item.asArray.value->uiClass;
else
return 0;
}
/* ================================================ */
/*
* <szName> = ( pObject )
*
* Get the class name of an object
*
*/
char * hb_objGetClsName( PHB_ITEM pObject )
{
char * szClassName;
HB_TRACE(HB_TR_DEBUG, ("hb_objGetClsName(%p)", pObject));
if( HB_IS_ARRAY( pObject ) )
{
if( ! pObject->item.asArray.value->uiClass )
szClassName = "ARRAY";
else
szClassName =
( s_pClasses + pObject->item.asArray.value->uiClass - 1 )->szName;
}
else /* built in types */
{
switch( pObject->type )
{
case HB_IT_NIL:
szClassName = "NIL";
break;
case HB_IT_STRING:
case HB_IT_MEMO:
szClassName = "CHARACTER";
break;
case HB_IT_BLOCK:
szClassName = "BLOCK";
break;
case HB_IT_SYMBOL:
szClassName = "SYMBOL";
break;
case HB_IT_DATE:
szClassName = "DATE";
break;
case HB_IT_INTEGER:
case HB_IT_LONG:
case HB_IT_DOUBLE:
szClassName = "NUMERIC";
break;
case HB_IT_LOGICAL:
szClassName = "LOGICAL";
break;
default:
szClassName = "UNKNOWN";
break;
}
}
return szClassName;
}
/*
* <szName> = ( pObject )
*
* Get the real class name of an object message
* Will return the class name from wich the message is inherited in case
* of inheritance.
*
*/
char * hb_objGetRealClsName( PHB_ITEM pObject, char * szName )
{
HB_TRACE(HB_TR_DEBUG, ("hb_objGetrealClsName(%p)", pObject));
if( HB_IS_OBJECT( pObject ) )
{
PHB_DYNS pMsg = hb_dynsymFindName( szName );
USHORT uiClass;
USHORT uiCurCls;
USHORT uiClsTree;
uiClass = pObject->item.asArray.value->uiClass;
/* default value to current class object */
if (pObject->item.asArray.value->puiClsTree && pObject->item.asArray.value->puiClsTree[0])
{
uiClsTree = pObject->item.asArray.value->puiClsTree[0] ;
uiCurCls = pObject->item.asArray.value->puiClsTree[uiClsTree] ;
}
else
{
uiClsTree = 1; /* Flag value */
uiCurCls = uiClass;
}
while (uiClsTree)
{
if( uiCurCls && uiCurCls <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiCurCls - 1 );
USHORT uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pClass->uiHashKey ) * BUCKET );
USHORT uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
USHORT uiLimit = ( USHORT ) ( uiAt ? ( uiAt - 1 ) : ( uiMask - 1 ) );
while( uiAt != uiLimit )
{
if( pClass->pMethods[ uiAt ].pMessage == pMsg )
{
uiClass = (pClass->pMethods + uiAt)->uiSprClass;
uiClsTree=1; /* Flag Value */
break;
}
if( ++uiAt == uiMask )
uiAt = 0;
}
}
if (-- uiClsTree)
uiCurCls = pObject->item.asArray.value->puiClsTree[uiClsTree] ;
}
if( uiClass && uiClass <= s_uiClasses )
return ( s_pClasses + uiClass - 1 )->szName;
}
return hb_objGetClsName( pObject );
}
static void hb_objPushSuperCast( PHB_ITEM pObject )
{
PHB_BASEARRAY pObjBase;
PHB_ITEM pRealObj;
USHORT uiClass;
USHORT nPos;
pObjBase = pObject->item.asArray.value;
uiClass = pObjBase->uiClass;
pRealObj = hb_itemNew( pObjBase->pItems );
/* and take back the good pObjBase */
pObjBase = pRealObj->item.asArray.value;
/* Now I should exchnage it with the current stacked value */
hb_itemSwap( pObject, pRealObj );
/* and release the fake one */
hb_itemRelease( pRealObj );
/* Push current SuperClass handle */
if ( ! pObjBase->puiClsTree )
{
pObjBase->puiClsTree = ( USHORT * ) hb_xgrab( sizeof( USHORT ) );
pObjBase->puiClsTree[ 0 ] = 0;
}
nPos = pObjBase->puiClsTree[ 0 ] + 1;
pObjBase->puiClsTree = ( USHORT * ) hb_xrealloc( pObjBase->puiClsTree, sizeof( USHORT ) * ( nPos + 1 ) );
pObjBase->puiClsTree[ 0 ] = nPos ;
pObjBase->puiClsTree[ nPos ] = uiClass;
}
void hb_objPopSuperCast( PHB_ITEM pObject )
{
if( HB_IS_OBJECT( pObject ) )
{
PHB_BASEARRAY pObjBase = pObject->item.asArray.value;
if( pObjBase->puiClsTree )
{
USHORT nPos = pObjBase->puiClsTree[ 0 ] - 1;
/* POP SuperClass handle */
if( nPos )
{
pObjBase->puiClsTree = ( USHORT * ) hb_xrealloc( pObjBase->puiClsTree, sizeof( USHORT ) * ( nPos + 1 ) );
pObjBase->puiClsTree[ 0 ] = nPos;
}
else
{
hb_xfree(pObjBase->puiClsTree);
pObjBase->puiClsTree = NULL ;
}
}
}
}
/*
* <pFuncSym> = hb_objGetMethod( <pObject>, <pMessage>, <fpPopSuper> )
*
* Internal function to the function pointer of a message of an object
*/
PHB_SYMB hb_objGetMethod( PHB_ITEM pObject, PHB_SYMB pMessage, BOOL * pfPopSuper )
{
PCLASS pClass = NULL;
PHB_DYNS pMsg;
HB_TRACE(HB_TR_DEBUG, ("hb_objGetMethod(%p, %p, %p)", pObject, pMessage, pfPopSuper));
s_pMethod = NULL;
if( pfPopSuper )
*pfPopSuper = FALSE;
pMsg = pMessage->pDynSym;
if( pObject->type == HB_IT_ARRAY )
{
USHORT uiClass = pObject->item.asArray.value->uiClass;
if( pfPopSuper && pObject->item.asArray.value->uiPrevCls )
{
hb_objPushSuperCast( pObject );
*pfPopSuper = TRUE;
}
if( uiClass && uiClass <= s_uiClasses )
{
USHORT uiAt, uiMask, uiLimit;
pClass = s_pClasses + ( uiClass - 1 );
uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pClass->uiHashKey ) * BUCKET );
uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
uiLimit = ( USHORT ) ( uiAt ? ( uiAt - 1 ) : ( uiMask - 1 ) );
while( uiAt != uiLimit )
{
if( pClass->pMethods[ uiAt ].pMessage == pMsg )
{
PMETHOD pMethod = pClass->pMethods + uiAt;
/*hb_clsScope( pObject, pMethod );*/ /* debug */
s_pMethod = pMethod ;
return pMethod->pFuncSym;
}
uiAt++;
if( uiAt == uiMask )
uiAt = 0;
}
}
}
else if( pObject->type == HB_IT_BLOCK )
{
if( pMessage == &hb_symEval )
return pMessage;
else if( pMsg == s___msgEval.pDynSym )
return &hb_symEval;
}
/* Default messages here */
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___msgEval.pDynSym )
return &s___msgEval;
else if( pMsg == s___msgClsParent.pDynSym )
return &s___msgClsParent;
else if( pMsg == s___msgClass.pDynSym )
return &s___msgClass;
*/
else if( pfPopSuper )
{
if( pClass && pClass->pFunError )
return pClass->pFunError;
/* remove this line if you want default HVM error message */
return &s___msgNoMethod;
}
return NULL;
}
/*
* return TRUE if object has a given message
*/
BOOL hb_objHasMessage( PHB_ITEM pObject, PHB_DYNS pMessage )
{
return hb_objGetMethod( pObject, pMessage->pSymbol, NULL ) != NULL;
}
/*
* 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_objGetMethod( pObject, pMessage, NULL ) != NULL;
}
static PHB_SYMB hb_objFuncParam( int iParam )
{
PHB_ITEM pItem = hb_param( iParam, HB_IT_SYMBOL );
if( pItem )
return pItem->item.asSymbol.value;
return NULL;
}
#ifdef HB_CLS_ENFORCERO
static PMETHOD hb_objGetpMethod( PHB_ITEM pObject, PHB_SYMB pMessage )
{
USHORT uiClass;
PHB_DYNS pMsg = pMessage->pDynSym;
HB_TRACE(HB_TR_DEBUG, ("hb_objGetpMethod(%p, %p)", pObject, pMessage));
if( pObject->type == HB_IT_ARRAY )
uiClass = pObject->item.asArray.value->uiClass;
else
uiClass = 0;
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
USHORT uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pClass->uiHashKey ) * BUCKET );
USHORT uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
USHORT uiLimit = ( USHORT ) ( uiAt ? ( uiAt - 1 ) : ( uiMask - 1 ) );
while( uiAt != uiLimit )
{
if( pClass->pMethods[ uiAt ].pMessage == pMsg )
return (pClass->pMethods + uiAt) ;
uiAt++;
if( uiAt == uiMask )
uiAt = 0;
}
}
return NULL;
}
#endif
/*
* Check if object has a given operator
*/
BOOL hb_objHasOperator( PHB_ITEM pObject, USHORT uiOperator )
{
HB_TRACE(HB_TR_DEBUG, ("hb_objHasOperator(%p,%hu)", pObject, uiOperator));
if( pObject->type == HB_IT_ARRAY &&
pObject->item.asArray.value->uiClass != 0 )
{
PCLASS pClass = s_pClasses + pObject->item.asArray.value->uiClass - 1;
return ( pClass->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 pMsgArg )
{
HB_TRACE(HB_TR_DEBUG, ("hb_objOperatorCall(%hu,%p,%p,%p)", uiOperator, pResult, pObject, pMsgArg));
if( hb_objHasOperator( pObject, uiOperator ) )
{
hb_vmPushSymbol( s_opSymbols + uiOperator );
hb_vmPush( pObject );
if( HB_IS_COMPLEX( hb_stackReturnItem() ) )
hb_itemClear( hb_stackReturnItem() );
else
hb_stackReturnItem()->type = HB_IT_NIL;
if( pMsgArg )
{
hb_vmPush( pMsgArg );
hb_vmSend( 1 );
}
else
hb_vmSend( 0 );
/* store the return value */
hb_itemCopy( pResult, hb_stackReturnItem() );
return TRUE;
}
return FALSE;
}
/*
* <bool> = hb_objHasMsg( <pObject>, <szString> )
*
* Check whether <szString> is an existing message for object.
*
* <uPtr> should be read as a boolean
*/
BOOL hb_objHasMsg( PHB_ITEM pObject, char *szString )
{
PHB_DYNS pDynSym = hb_dynsymFindName( szString );
HB_TRACE(HB_TR_DEBUG, ("hb_objHasMsg(%p, %s)", pObject, szString));
if( pDynSym )
{
return hb_objGetMethod( pObject, pDynSym->pSymbol, NULL ) != NULL;
}
else
{
return FALSE;
}
}
/* ================================================ */
/*
* __clsAddMsg( <hClass>, <cMessage>, <pFunction>, <nType>, [xInit], <uiScope>, <lPersistent> )
*
* Add a message to the class.
*
* <hClass> Class handle
* <cMessage> Message
* <pFunction> HB_OO_MSG_METHOD : Pointer to function
* HB_OO_MSG_DATA : Index number in array
* HB_OO_MSG_CLASSDATA : Index number in array
* HB_OO_MSG_INLINE : Code block
* HB_OO_MSG_SUPER : Handle of super class
*
* <nType> see HB_OO_MSG_*
*
* <xInit> HB_OO_MSG_DATA : Optional initializer for DATA
* HB_OO_MSG_CLASSDATA : Optional initializer for DATA
* HB_OO_MSG_SUPER : Index number in array (for instance SuperObject)
*
* <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_CLASSCTOR 256 : Class method constructor
* HB_OO_CLSTP_CLASSMETH 512 : Class method
*/
HB_FUNC( __CLSADDMSG )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
USHORT uiScope = ( USHORT ) ( ISNUM( 6 ) ? hb_parni( 6 ) : HB_OO_CLSTP_EXPORTED );
BOOL bPersistent = hb_parl( 7 );
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
PHB_DYNS pMessage;
char * szMessage = hb_parc( 2 );
USHORT uiBucket;
USHORT wType = ( USHORT ) hb_parni( 4 );
USHORT uiAt;
PMETHOD pNewMeth;
USHORT uiOperator;
PHB_SYMB pOpSym;
ULONG ulOpFlags = 0;
/* translate names of operator overloading messages */
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_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;
}
}
if( wType == HB_OO_MSG_INLINE && hb_param( 3, HB_IT_BLOCK ) == NULL )
{
hb_errRT_BASE( EG_ARG, 3000, NULL, "__CLSADDMSG", 0 );
return;
}
if( pClass->uiMethods > ( pClass->uiHashKey * BUCKET * 2 / 3 ) )
hb_clsDictRealloc( pClass );
do
{
uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMessage ) ) % pClass->uiHashKey ) * BUCKET );
/* Find either the existing message or an open spot for a new message */
for( uiBucket = 0; uiBucket < BUCKET; uiBucket++ )
{
if( !pClass->pMethods[ uiAt+uiBucket ].pMessage
||
( pClass->pMethods[ uiAt+uiBucket ].pMessage == pMessage )
)
break;
}
if( uiBucket >= BUCKET )
hb_clsDictRealloc( pClass );
} while( uiBucket >= BUCKET );
pNewMeth = pClass->pMethods + ( uiAt + uiBucket );
if( ! pNewMeth->pMessage )
{
pNewMeth->pMessage = pMessage;
pClass->uiMethods++; /* One more message */
}
pNewMeth->uiSprClass = uiClass ; /* now used !! */
pNewMeth->bClsDataInitiated = 0 ; /* reset state */
pNewMeth->ulCalls = 0;
pNewMeth->ulTime = 0;
pNewMeth->ulRecurse = 0;
pNewMeth->bIsPersistent = bPersistent ? 1 : 0;
/* in case of re-used message */
if ( pNewMeth->pInitValue )
{
hb_itemRelease(pNewMeth->pInitValue) ;
pNewMeth->pInitValue = 0 ;
}
switch( wType )
{
case HB_OO_MSG_METHOD:
pNewMeth->pFuncSym = hb_objFuncParam( 3 );
pNewMeth->uiScope = uiScope;
pNewMeth->uiData = 0;
break;
case HB_OO_MSG_DATA:
pNewMeth->uiData = ( USHORT ) hb_parnl( 3 );
pNewMeth->uiScope = uiScope;
if( pMessage->pSymbol->szName[ 0 ] == '_' )
pNewMeth->pFuncSym = &s___msgSetData;
else
{
PHB_ITEM pInit = hb_param( 5, HB_IT_ANY );
pNewMeth->pFuncSym = &s___msgGetData;
if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */
{
pNewMeth->pInitValue = hb_itemClone( pInit );
}
}
break;
case HB_OO_MSG_CLASSDATA:
pNewMeth->uiData = ( USHORT ) hb_parnl( 3 );
pNewMeth->uiDataShared = pNewMeth->uiData ;
pNewMeth->uiScope = uiScope;
if( ( USHORT ) hb_arrayLen( pClass->pClassDatas ) < pNewMeth->uiData )
hb_arraySize( pClass->pClassDatas, pNewMeth->uiData );
if( pMessage->pSymbol->szName[ 0 ] != '_' )
{
PHB_ITEM pInit = hb_param( 5, HB_IT_ANY );
if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */
{
pNewMeth->pInitValue = hb_itemClone( pInit );
}
}
if( ( pNewMeth->uiScope & HB_OO_CLSTP_SHARED ) != HB_OO_CLSTP_SHARED )
{
if( pMessage->pSymbol->szName[ 0 ] == '_' )
pNewMeth->pFuncSym = &s___msgSetClsData;
else
pNewMeth->pFuncSym = &s___msgGetClsData;
}
else
{
if( pMessage->pSymbol->szName[ 0 ] == '_' )
{
pNewMeth->pFuncSym = &s___msgSetShrData;
pClass->uiDatasShared++;
}
else
pNewMeth->pFuncSym = &s___msgGetShrData;
}
break;
case HB_OO_MSG_INLINE:
pNewMeth->uiData = ( USHORT ) ( hb_arrayLen( pClass->pInlines ) + 1 );
pNewMeth->uiScope = uiScope;
hb_arraySize( pClass->pInlines, pNewMeth->uiData );
hb_arraySet( pClass->pInlines, pNewMeth->uiData, hb_param( 3, HB_IT_BLOCK ) );
pNewMeth->pFuncSym = &s___msgEvalInline;
break;
case HB_OO_MSG_VIRTUAL:
pNewMeth->pFuncSym = &s___msgVirtual;
break;
case HB_OO_MSG_SUPER:
pNewMeth->uiData = ( USHORT ) hb_parnl( 3 );
pNewMeth->uiSprClass = ( USHORT ) hb_parnl( 5 ); /* store the super handel */
pNewMeth->uiScope = uiScope;
pNewMeth->pFuncSym = &s___msgSuper;
break;
case HB_OO_MSG_ONERROR:
pClass->pFunError = hb_objFuncParam( 3 );
break;
default:
hb_errInternal( HB_EI_CLSINVMETHOD, NULL, "__clsAddMsg", NULL );
return;
}
pClass->ulOpFlags |= ulOpFlags;
}
}
/*
* <hClass> := __clsNew( <cClassName>, <nDatas>, [ahSuper|aoSuper] )
*
* Create a new class
*
* <cClassName> Name of the class
* <nDatas> Number of DATAs in the class
* <ahSuper> Optional handle(s) of superclass(es)
* <aoSuper> Optional superclass(es) Object instance -
* seems it's not implemented
*/
HB_FUNC( __CLSNEW )
{
PCLASS pNewCls;
ULONG ulSize; /* USHORT is small. Maximum 409 methods. In some
cases it is enough. This eliminate random GPFs
in this function for big classes */
PHB_ITEM pahSuper;
USHORT i, uiSuper;
/*USHORT nLenShrDatas = 0;*/
USHORT nLenClsDatas = 0;
USHORT nLenInlines = 0;
USHORT nLenDatas = 0;
pahSuper = hb_itemParam( 3 ); /* Replace the initial uiSuper */
uiSuper = ( USHORT ) hb_itemSize( pahSuper ); /* Number of Super class present */
if( s_pClasses )
s_pClasses = ( PCLASS ) hb_xrealloc( s_pClasses, sizeof( CLASS ) * ( s_uiClasses + 1 ) );
else
s_pClasses = ( PCLASS ) hb_xgrab( sizeof( CLASS ) );
pNewCls = s_pClasses + s_uiClasses;
pNewCls->szName = hb_strdup( hb_parc( 1 ) );
pNewCls->uiDataFirst = 0;
pNewCls->uiDatas = 0;
pNewCls->uiMethods = 0;
pNewCls->uiDatasShared = 0;
pNewCls->ulOpFlags = 0;
if( uiSuper )
{
for( i = 1; i <= uiSuper; i++ )
{
PHB_DYNS pMsg;
PHB_ITEM pSuper;
PHB_ITEM pClsAnyTmp;
USHORT nSuper;
USHORT ui, uiAt, uiLimit, uiCurrent ;
PCLASS pSprCls;
USHORT nLen;
BOOL bResize ;
pSuper = hb_itemNew( NULL );
hb_arrayGet( pahSuper, i, pSuper);
nSuper = ( USHORT ) hb_itemGetNL( pSuper );
pSprCls = s_pClasses + ( nSuper - 1 );
uiLimit = ( USHORT ) ( pSprCls->uiHashKey * BUCKET );
hb_itemRelease( pSuper );
pNewCls->uiDataFirst += pSprCls->uiDatas;
pNewCls->uiDatas = ( USHORT ) ( pNewCls->uiDataFirst + hb_parni( 2 ) );
pNewCls->ulOpFlags |= pSprCls->ulOpFlags;
if( i == 1 ) /* This is the first superclass */
{
pNewCls->uiHashKey = pSprCls->uiHashKey;
/* CLASS DATA Not Shared ( new array, new value ) */
pNewCls->pClassDatas = hb_arrayClone( pSprCls->pClassDatas );
pNewCls->pInlines = hb_arrayClone( pSprCls->pInlines );
pNewCls->uiDatasShared = pSprCls->uiDatasShared;
}
else
{
/* Ok add now the previous len to the offset */
nLenClsDatas = ( USHORT ) hb_itemSize( pNewCls->pClassDatas );
nLenInlines = ( USHORT ) hb_itemSize( pNewCls->pInlines );
nLenDatas = ( USHORT ) pNewCls->uiDatas;
/* ClassDatas */
pClsAnyTmp = hb_arrayClone( pSprCls->pClassDatas );
nLen = ( USHORT ) hb_itemSize( pClsAnyTmp );
for( ui = 1; ui <= nLen; ui++ )
{
PHB_ITEM pTmp = hb_itemNew( NULL );
hb_arrayGet( pClsAnyTmp, ui, pTmp );
hb_arrayAdd( pNewCls->pClassDatas, pTmp );
hb_itemRelease( pTmp );
}
hb_itemRelease( pClsAnyTmp );
/* SharedDatas */
pNewCls->uiDatasShared += pSprCls->uiDatasShared;
/* Inlines */
pClsAnyTmp = hb_arrayClone( pSprCls->pInlines );
nLen = ( USHORT ) hb_itemSize( pClsAnyTmp );
for( ui = 1; ui <= nLen; ui++ )
{
PHB_ITEM pTmp = hb_itemNew( NULL );
hb_arrayGet( pClsAnyTmp, ui, pTmp );
hb_arrayAdd( pNewCls->pInlines, pTmp );
hb_itemRelease( pTmp );
}
hb_itemRelease( pClsAnyTmp );
}
/* Now working on pMethods */
if( i == 1 )
{
ulSize = pNewCls->uiHashKey * BUCKET * sizeof( METHOD );
pNewCls->pMethods = ( PMETHOD ) hb_xgrab( ulSize );
memset( pNewCls->pMethods, 0, ulSize );
pNewCls->pFunError = pSprCls->pFunError;
}
bResize = ( ( pNewCls->uiMethods + pSprCls->uiMethods ) > ( pNewCls->uiHashKey * BUCKET * 2 / 3 ) ) ;
uiCurrent = 0 ;
do
{
if( bResize )
{
hb_clsDictRealloc( pNewCls );
bResize=FALSE;
}
/* When doing the eventual second pass after call to hb_clsDictRealloc */
/* We review only messages not already treated */
for( ui = uiCurrent ; ui < uiLimit; ui++ )
{
USHORT uiBucket;
pMsg = ( PHB_DYNS ) pSprCls->pMethods[ ui ].pMessage;
if( pMsg )
{
uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pNewCls->uiHashKey ) * BUCKET );
for( uiBucket = 0; uiBucket < BUCKET; uiBucket++ )
{
/* Ok, this bucket is empty */
if( pNewCls->pMethods[ uiAt+uiBucket ].pMessage == 0 )
{
/* Now, we can increment the msg count */
pNewCls->uiMethods++;
hb_xmemcpy(pNewCls->pMethods + ( uiAt+uiBucket ), pSprCls->pMethods + ui, sizeof( METHOD ) );
if(
pNewCls->pMethods[ uiAt+uiBucket ].pFuncSym == &s___msgSetClsData
||
pNewCls->pMethods[ uiAt+uiBucket ].pFuncSym == &s___msgGetClsData
)
pNewCls->pMethods[ uiAt+uiBucket ].uiData += nLenClsDatas;
if(
pNewCls->pMethods[ uiAt+uiBucket ].pFuncSym == &s___msgSetData
||
pNewCls->pMethods[ uiAt+uiBucket ].pFuncSym == &s___msgGetData
||
pNewCls->pMethods[ uiAt+uiBucket ].pFuncSym == &s___msgSuper
)
{
pNewCls->pMethods[ uiAt+uiBucket ].uiData += nLenDatas;
}
if( pNewCls->pMethods[ uiAt+uiBucket ].pFuncSym == &s___msgEvalInline )
pNewCls->pMethods[ uiAt+uiBucket ].uiData += nLenInlines;
if( ( pSprCls->pMethods[ ui ].uiScope & HB_OO_CLSTP_SUPER ) != HB_OO_CLSTP_SUPER )
pNewCls->pMethods[ uiAt+uiBucket ].uiScope = ( USHORT ) ( pSprCls->pMethods[ ui ].uiScope + HB_OO_CLSTP_SUPER );
else
pNewCls->pMethods[ uiAt+uiBucket ].uiScope = pSprCls->pMethods[ ui ].uiScope;
if( pSprCls->pMethods[ ui ].pInitValue )
{
pNewCls->pMethods[ uiAt + uiBucket ].pInitValue =
hb_itemClone( pSprCls->pMethods[ ui ].pInitValue );
}
break;
}
else if( pNewCls->pMethods[ uiAt + uiBucket ].pMessage == pMsg )
break;
}
/* No space found for this message, call hb_dicrealloc() */
if (uiBucket == BUCKET)
{
bResize=TRUE;
uiCurrent = ui ;
break;
}
}
}
} while ( ui < uiLimit );
}
}
else
{
pNewCls->uiDatas = ( USHORT ) hb_parni( 2 );
pNewCls->uiDataFirst = 0;
pNewCls->uiDatasShared= 0;
pNewCls->pMethods = ( PMETHOD ) hb_xgrab( BASE_METHODS * sizeof( METHOD ) );
memset( pNewCls->pMethods, 0, BASE_METHODS * sizeof( METHOD ) );
pNewCls->uiMethods = 0;
pNewCls->uiHashKey = HASH_KEY;
pNewCls->pClassDatas = hb_itemArrayNew( 0 );
pNewCls->pInlines = hb_itemArrayNew( 0 );
pNewCls->pFunError = NULL;
}
hb_itemRelease( pahSuper );
hb_retni( ++s_uiClasses );
}
/*
* __clsDelMsg( <oObj>, <cMessage> )
*
* Delete message (only for INLINE and METHOD)
*
* <oObj> Object
* <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 )
{
PHB_DYNS pMsg = hb_dynsymFindName( pString->item.asString.value );
if( pMsg )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
USHORT uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
USHORT uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pClass->uiHashKey ) * BUCKET );
USHORT uiLimit = ( USHORT ) ( uiAt ? ( uiAt - 1 ) : ( uiMask - 1 ) );
while( ( uiAt != uiLimit ) &&
( pClass->pMethods[ uiAt ].pMessage &&
( pClass->pMethods[ uiAt ].pMessage != pMsg ) ) )
{
uiAt++;
if( uiAt == uiMask )
uiAt = 0;
}
if( uiAt != uiLimit )
{ /* Requested method found */
PHB_SYMB pFuncSym = pClass->pMethods[ uiAt ].pFuncSym;
if( pFuncSym == &s___msgEvalInline ) /* INLINE method deleted */
{
hb_arrayDel( pClass->pInlines, pClass->pMethods[ uiAt ].uiData );
/* Delete INLINE block */
}
/* Move messages */
while( pClass->pMethods[ uiAt ].pMessage && uiAt != uiLimit )
{
hb_xmemcpy( pClass->pMethods + uiAt, pClass->pMethods + ( uiAt == uiMask ? 0 : uiAt + 1 ), sizeof( METHOD ) );
uiAt++;
if( uiAt == uiMask )
{
uiAt = 0;
}
}
memset( pClass->pMethods + uiAt, 0, sizeof( METHOD ) );
pClass->uiMethods--; /* Decrease number messages */
}
}
}
}
/*
* <oNewObject> := __clsInst( <hClass> )
*
* Create a new object from class definition <hClass>
*/
HB_FUNC( __CLSINST )
{
PHB_ITEM pSelf ;
pSelf = hb_clsInst( ( USHORT ) hb_parni( 1 ));
if( pSelf )
{
hb_itemRelease( hb_itemReturn( pSelf ) );
}
}
/*
* [<o(Super)Object>] := hb_clsInst( <hClass> )
*
* Create a (super)object from class definition <hClass>
*/
static PHB_ITEM hb_clsInst( USHORT uiClass )
{
PHB_ITEM pSelf = NULL;
if( uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
USHORT uiAt;
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
PMETHOD pMeth ;
pSelf = hb_itemNew( NULL );
hb_arrayNew( pSelf, pClass->uiDatas );
pSelf->item.asArray.value->uiClass = uiClass;
pSelf->item.asArray.value->uiPrevCls = 0;
pSelf->item.asArray.value->puiClsTree = NULL;
/* Initialise value if initialisation was requested */
pMeth = pClass->pMethods;
for( uiAt = 0; uiAt < uiLimit; uiAt++, pMeth++ )
{
/* Init Classdata (inherited and not) if needed */
if( pMeth->pInitValue )
{
if( pMeth->pFuncSym == &s___msgGetClsData && !( pMeth->bClsDataInitiated ) )
{
PHB_ITEM pInit;
pInit = hb_arrayGetItemPtr( pClass->pClassDatas, pMeth->uiData );
if( HB_IS_NIL( pInit ) )
{
pInit = hb_itemClone( pMeth->pInitValue );
hb_arraySet( pClass->pClassDatas, pMeth->uiData, pInit );
hb_itemRelease( pInit );
pMeth->bClsDataInitiated = 1;
}
}
else if( pMeth->pFuncSym == &s___msgGetData ) /* is a DATA but not herited */
{
PHB_ITEM pInit = hb_itemClone( pMeth->pInitValue );
hb_arraySet( pSelf, pMeth->uiData, pInit );
hb_itemRelease( pInit );
}
else if( pMeth->pFuncSym == &s___msgGetShrData && !( pMeth->bClsDataInitiated ) )
{
/* Init Shared Classdata as needed, we only need to init the first */
/* not inherited classdata array where all shared will point to */
PHB_ITEM pInit;
pInit = hb_arrayGetItemPtr( pClass->pClassDatas, pMeth->uiData );
if( HB_IS_NIL( pInit ) )
{
pInit = hb_itemClone( pMeth->pInitValue );
hb_arraySet( pClass->pClassDatas, pMeth->uiData, pInit );
hb_itemRelease( pInit );
pMeth->bClsDataInitiated = 1;
}
}
}
}
}
return pSelf;
}
/*
* __clsModMsg( <oObj>, <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 )
{
PHB_DYNS pMsg = hb_dynsymFindName( pString->item.asString.value );
if( pMsg )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
USHORT uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pClass->uiHashKey ) * BUCKET );
USHORT uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
USHORT uiLimit = ( USHORT ) ( uiAt ? ( uiAt - 1 ) : ( uiMask - 1 ) );
while( ( uiAt != uiLimit ) &&
( pClass->pMethods[ uiAt ].pMessage &&
( pClass->pMethods[ uiAt ].pMessage != pMsg ) ) )
{
uiAt++;
if( uiAt == uiMask )
uiAt = 0;
}
if( uiAt != uiLimit )
{ /* Requested method found */
PHB_SYMB pFuncSym = pClass->pMethods[ uiAt ].pFuncSym;
if( pFuncSym == &s___msgEvalInline ) /* INLINE method changed */
{
PHB_ITEM pBlock = hb_param( 3, HB_IT_BLOCK );
if( pBlock == NULL )
{
hb_errRT_BASE( EG_ARG, 3000, NULL, "__CLSMODMSG", 0 );
}
else
{
hb_arraySet( pClass->pInlines, pClass->pMethods[ uiAt ].uiData, pBlock );
}
}
else if( pFuncSym == &s___msgSetData || pFuncSym == &s___msgGetData )
{ /* Not allowed for DATA */
hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a DATA item", "__CLSMODMSG", 0 );
}
else /* Modify METHOD */
{
pClass->pMethods[ uiAt ].pFuncSym = hb_objFuncParam( 3 );
}
}
}
}
}
/*
* <cClassName> := ClassName( <hClass> )
*
* Returns class name of <hClass>
*/
HB_FUNC( __OBJGETCLSNAME )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT );
USHORT uiClass;
if( pObject && pObject->item.asArray.value->uiClass )
{
uiClass = pObject->item.asArray.value->uiClass;
hb_retc( s_pClasses[ uiClass - 1 ].szName );
}
else
{
uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass <= s_uiClasses )
hb_retc( s_pClasses[ uiClass - 1 ].szName );
else
hb_retc( "" );
}
}
/*
* <lRet> := __objHasMsg( <oObj>, <cSymbol> )
*
* Is <cSymbol> a valid message for the <oObj>
*/
HB_FUNC( __OBJHASMSG )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT );
PHB_ITEM pString = hb_param( 2, HB_IT_STRING );
if( pObject && pString )
{
hb_retl( hb_objHasMsg( pObject, pString->item.asString.value ) );
}
else
{
/*hb_errRT_BASE( EG_ARG, 3000, NULL, "__OBJHASMSG", 0 );*/
hb_errRT_BASE_SubstR( EG_ARG, 1099, NULL, "__ObjHasMsg", 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 ) ;
/* pDstObject->item.asArray.value->puiClsTree = NULL; */
/* pDstObject->item.asArray.value->puiClsTree = ( USHORT * ) hb_xgrab( sizeof( USHORT ) ); */
/* pDstObject->item.asArray.value->puiClsTree[0]=0; */
hb_itemRelease( hb_itemReturn( pDstObject ) );
}
else
{
hb_errRT_BASE( EG_ARG, 3001, NULL, "__OBJCLONE", 0 );
}
}
void hb_objSendMsg( PHB_ITEM pObj, char *sMsg, ULONG ulArg, ... )
{
PHB_DYNS pMsgSym = hb_dynsymFindName( sMsg );
if( pMsgSym )
{
hb_vmPushSymbol( pMsgSym->pSymbol );
hb_vmPush( pObj );
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, "__ObjSendMsg()", 0 );
}
}
/*
* <xRet> = __objSendMsg( <oObj>, <cSymbol>, <xArg,..>
*
* Send a message to an object
*/
HB_FUNC( __OBJSENDMSG )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT );
USHORT uiPCount = hb_pcount();
if( uiPCount>=2 && pObject ) /* Object & message passed */
{
/*hb_dynsymFindName( hb_parc(2) );*/
PHB_DYNS pMsg = hb_dynsymGet( hb_parc(2) );
if( pMsg )
{
USHORT uiParam;
hb_vmPushSymbol( pMsg->pSymbol ); /* Push message symbol */
hb_vmPush( pObject ); /* Push object */
for( uiParam = 3; uiParam <= uiPCount; uiParam++ ) /* Push arguments on stack */
{
hb_vmPush( hb_param( uiParam, HB_IT_ANY ) );
}
hb_vmSend( ( USHORT ) ( uiPCount - 2 ) ); /* Execute message */
}
}
else
{
hb_errRT_BASE( EG_ARG, 3000, NULL, "__OBJSENDMSG", 0 );
}
}
/*
* <hClass> := __clsInstSuper( <cName> )
*
* Instance super class and return class handle
*/
HB_FUNC( __CLSINSTSUPER )
{
BOOL bFound = FALSE;
if( hb_pcount() >= 1 )
{
char * cString=hb_parc(1);
PHB_DYNS pDynSym = hb_dynsymFind( cString );
if( pDynSym ) /* Find function */
{
USHORT uiClass;
hb_vmPushSymbol( pDynSym->pSymbol ); /* Push function name */
hb_vmPushNil();
hb_vmFunction( 0 ); /* Execute super class */
if( HB_IS_OBJECT( hb_stackReturnItem() ) )
{
for( uiClass = 0; ! bFound && uiClass < s_uiClasses; uiClass++ )
{ /* Locate the entry */
if( hb_stricmp( cString , s_pClasses[ uiClass ].szName ) == 0 )
{
hb_retni( uiClass + 1 ); /* Entry + 1 = hb___msgClsH */
bFound = TRUE;
}
}
}
else
{
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 );
}
}
if( ! bFound )
{
hb_retni( 0 );
}
}
/*
* <nSeq> = __cls_CntClsData( <hClass> )
*
* Return number of class datas
*/
HB_FUNC( __CLS_CNTCLSDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
hb_retni( hb_arrayLen( pClass->pClassDatas ) );
}
else hb_retni( 0 );
}
/*
* <nSeq> = __cls_CntData( <hClass> )
*
* Return number of datas
*/
HB_FUNC( __CLS_CNTDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass )
hb_retni( uiClass != 0 ? s_pClasses[ uiClass - 1 ].uiDatas : 0 );
}
/*
* <nSeq> = __cls_DecData( <hClass> )
*
* Return number of datas and decrease
*/
HB_FUNC( __CLS_DECDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass )
hb_retni( s_pClasses[ uiClass - 1 ].uiDatas-- );
}
/*
* <nSeq> = __cls_IncData( <hClass> )
*
* Return number of datas and increase
*/
HB_FUNC( __CLS_INCDATA )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
if( uiClass )
hb_retni( uiClass != 0 ? ++s_pClasses[ uiClass - 1 ].uiDatas : 0 );
}
/* NOTE: Undocumented Clipper function */
/* see for parameter compatibility with Clipper. */
HB_FUNC( __CLASSNEW )
{
HB_FUNCNAME( __CLSNEW )();
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSINSTANCE )
{
HB_FUNCNAME( __CLSINST )();
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSADD )
{
HB_FUNCNAME( __CLSADDMSG )();
}
/* NOTE: Undocumented Clipper function */
HB_FUNC( __CLASSNAME )
{
HB_FUNCNAME( __OBJGETCLSNAME )();
}
/* NOTE: Undocumented Clipper function */
/* NOTE: Based on hb___msgClsSel() */
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 - 1 );
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET ); /* Number of Hash keys */
USHORT uiPos = 0;
USHORT uiAt;
hb_arrayNew( pReturn, pClass->uiMethods ); /* Create a transfer array */
for( uiAt = 0; uiAt < uiLimit; uiAt++ )
{
PHB_DYNS pMessage = ( PHB_DYNS ) pClass->pMethods[ uiAt ].pMessage;
if( pMessage ) /* Hash Entry used ? */
{
PHB_ITEM pItem = hb_arrayGetItemPtr( pReturn, ++uiPos );
if( pItem )
hb_itemPutC( pItem, pMessage->pSymbol->szName );
else
break; /* Generate internal error? */
}
}
if( uiPos < pClass->uiMethods )
hb_arraySize( pReturn, uiPos );
}
hb_itemRelease( hb_itemReturn( pReturn ) );
}
/* to be used from Classes ERROR HANDLER method */
HB_FUNC( __GETMESSAGE )
{
hb_retc( hb_stackItem( hb_stackBaseItem()->item.asSymbol.stackbase )->item.asSymbol.value->szName );
}
HB_FUNC( __CLSPARENT )
{
hb_retl( hb_clsIsParent( hb_parni( 1 ) , hb_parc( 2 ) ) );
}
HB_FUNC( __SENDER )
{
USHORT iLevel = 3;
PHB_ITEM oSender = NULL;
LONG lOffset = hb_stackBaseOffset();
while( iLevel > 0 && lOffset > 1 )
{
lOffset = hb_stackItem( lOffset )->item.asSymbol.stackbase;
oSender = hb_stackItem( lOffset + 1 );
if( ( iLevel-- == 2 && oSender->type != HB_IT_BLOCK ) || oSender->type == HB_IT_NIL )
break;
}
if( iLevel == 0 && oSender != NULL && oSender->type == HB_IT_OBJECT )
{
hb_itemReturn( oSender );
}
}
/*
* Added by R<>C&JfL
*
* based on hb___msgClsH( void )
*/
HB_FUNC( __CLASSH )
{
PHB_ITEM pObject = hb_itemParam( 1 );
hb_retni( HB_IS_OBJECT( pObject ) ? pObject->item.asArray.value->uiClass : 0 );
hb_itemRelease( pObject );
}
/*
* based on hb___msgEval( void )
*/
HB_FUNC( __EVAL )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_ANY );
USHORT uiPCount = hb_pcount();
if( pObject && HB_IS_BLOCK( pObject ) )
{
USHORT uiParam;
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( pObject ); /* Push block */
for( uiParam = 1; uiParam <= uiPCount; ++uiParam )
hb_vmPush( hb_stackItemFromBase( uiParam ) );
hb_vmDo( ( USHORT ) uiPCount );
}
else
hb_errRT_BASE_SubstR( EG_NOMETHOD, 1004, NULL, "EVAL", pObject ? 1 : 0, pObject );
}
/* ================================================ */
/*
* <hClass> := <obj>:ClassH()
*
* Returns class handle of <obj>
*/
static HARBOUR hb___msgClsH( void )
{
if( HB_IS_ARRAY( hb_stackSelfItem() ) )
hb_retni( ( hb_stackSelfItem() )->item.asArray.value->uiClass );
else
hb_retni( 0 );
}
/*
* <cClassName> := <obj>:ClassName()
*
* Return class name of <obj>. Can also be used for all types.
*/
static HARBOUR hb___msgClsName( void )
{
PHB_ITEM pItemRef = hb_stackSelfItem();
if( HB_IS_BYREF( pItemRef ) ) /* Variables by reference */
pItemRef = hb_itemUnRef( pItemRef );
hb_retc( hb_objGetClsName( pItemRef ) );
}
/*
* <aMessages> := <obj>:ClassSel()
*
* Returns all the messages in <obj>
*/
static HARBOUR hb___msgClsSel( void )
{
PHB_ITEM pSelf = hb_stackSelfItem();
USHORT uiClass;
if( HB_IS_BYREF( pSelf ) )
pSelf = hb_itemUnRef( pSelf );
uiClass = hb_objGetClass( pSelf );
if( uiClass && uiClass <= s_uiClasses )
{
PHB_ITEM pReturn = hb_itemNew( NULL );
PCLASS pClass = s_pClasses + ( uiClass - 1 );
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET ); /* Number of Hash keys */
USHORT uiPos = 0, uiAt;
USHORT nParam;
nParam = hb_pcount() > 0 ? ( USHORT ) hb_parni( 1 ) : HB_MSGLISTALL;
hb_arrayNew( pReturn, pClass->uiMethods );
for( uiAt = 0; uiAt < uiLimit && uiPos < pClass->uiMethods; uiAt++ )
{
PHB_DYNS pMessage = ( PHB_DYNS ) pClass->pMethods[ uiAt ].pMessage;
if( pMessage ) /* Hash Entry used ? */
{
PMETHOD pMethod = pClass->pMethods + uiAt;
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_itemPutC( hb_arrayGetItemPtr( pReturn, ++uiPos ),
pMessage->pSymbol->szName );
}
}
}
if( uiPos < pClass->uiMethods )
hb_arraySize( pReturn, uiPos );
hb_itemRelease( hb_itemReturn( pReturn ) );
}
else
hb_ret();
}
#if 0
/*
* __msgClass()
*
* Internal function to return Self at Self:Class call (classy compatibility)
*/
static HARBOUR hb___msgClass( void )
{
hb_itemReturn( 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___msgClsParent( void )
{
PHB_ITEM pItemRef;
PHB_ITEM pItemParam;
char * szParentName = 0;
USHORT uiClass, i;
BOOL lClass=FALSE;
if( HB_IS_BYREF( hb_stackSelfItem() ) ) /* Variables by reference */
pItemRef = hb_itemUnRef( hb_stackSelfItem() );
else
pItemRef = hb_stackSelfItem();
uiClass = pItemRef->item.asArray.value->uiClass;
pItemParam = hb_stackItemFromBase( 1 );
if( HB_IS_OBJECT( pItemParam ) )
szParentName = hb_objGetClsName( pItemParam );
else if( HB_IS_STRING( pItemParam ) )
{
szParentName = hb_itemGetC( pItemParam );
lClass=TRUE;
}
for( i = 0; szParentName[ i ] != '\0'; i++ )
szParentName[ i ] = ( char ) toupper( szParentName[ i ] );
hb_retl( hb_clsIsParent( uiClass , szParentName ) );
if (lClass)
hb_itemFreeC( szParentName );
}
#endif
/*
* __msgEvalInline()
*
* Internal function executed for inline methods
*/
static HARBOUR hb___msgEvalInline( void )
{
USHORT uiClass = ( hb_stackSelfItem() )->item.asArray.value->uiClass;
USHORT uiParam;
USHORT uiPCount = hb_pcount();
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( hb_arrayGetItemPtr( s_pClasses[ uiClass - 1 ].pInlines,
s_pMethod->uiData ) );
hb_vmPush( hb_stackSelfItem() ); /* Push self */
for( uiParam = 1; uiParam <= uiPCount; uiParam++ )
{
hb_vmPush( hb_stackItemFromBase( uiParam ) );
}
hb_vmDo( ( USHORT ) ( uiPCount + 1 ) ); /* Self is also an argument */
}
/*
* __msgEval()
*
* Internal function for the internal EVAL method.
*/
static HARBOUR hb___msgEval( void )
{
HB_ITEM_PTR pSelf = hb_stackSelfItem();
if( HB_IS_BLOCK( pSelf ) )
{
USHORT uiParam;
USHORT uiPCount = hb_pcount();
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( pSelf );
for( uiParam = 1; uiParam <= uiPCount; uiParam++ )
hb_vmPush( hb_stackItemFromBase( uiParam ) );
hb_vmDo( ( USHORT ) uiPCount );
}
else
hb_errRT_BASE_SubstR( EG_NOMETHOD, 1004, NULL, "EVAL", HB_ERR_ARGS_SELFPARAMS );
}
/*
* __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 ] == '_' )
{
sprintf( 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
{
sprintf( 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
}
/*
* __msgSuper()
*
* Internal function to return a superobject
*/
/*
static HARBOUR hb___msgSuper( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
pObject->item.asArray.value->uiPrevCls = pObject->item.asArray.value->uiClass; / * backup of actual handel * /
pObject->item.asArray.value->uiClass = s_pMethod->uiSprClass; / * superclass handel casting * /
hb_itemReturn( pObject );
}
*/
static HARBOUR hb___msgSuper( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
/*ULONG ulLen = pObject->item.asArray.value->ulLen; */
PHB_ITEM pCopy = hb_itemArrayNew(1);
/* Now save the Self object as the 1st elem. */
hb_itemArrayPut( pCopy, 1 , pObject );
/* Or Store original object as 1st elem */
/* hb_itemCopy( pCopy->item.asArray.value->pItems , pObject) ; */
/* And transform it into a fake object */
pCopy->item.asArray.value->uiPrevCls = pObject->item.asArray.value->uiClass; /* backup of actual handel */
pCopy->item.asArray.value->uiClass = s_pMethod->uiSprClass; /* superclass handel casting */
pCopy->item.asArray.value->puiClsTree = NULL ;
hb_itemRelease( hb_itemReturn( pCopy ) );
}
/*
* __msgGetClsData()
*
* Internal function to return a CLASSDATA
*/
static HARBOUR hb___msgGetClsData( void )
{
USHORT uiClass = ( hb_stackSelfItem() )->item.asArray.value->uiClass;
if( uiClass && uiClass <= s_uiClasses )
hb_arrayGet( s_pClasses[ uiClass - 1 ].pClassDatas, s_pMethod->uiData, hb_stackReturnItem() );
}
/*
* __msgSetClsData()
*
* Internal function to set a CLASSDATA
*/
static HARBOUR hb___msgSetClsData( void )
{
USHORT uiClass = ( hb_stackSelfItem() )->item.asArray.value->uiClass;
PHB_ITEM pReturn = hb_stackItemFromBase( 1 );
if( uiClass && uiClass <= s_uiClasses )
{
hb_arraySet( s_pClasses[ uiClass - 1 ].pClassDatas, s_pMethod->uiData, pReturn );
}
hb_itemReturn( pReturn );
}
/*
* __msgGetShrData()
*
* Internal function to return a SHAREDDATA
*/
static HARBOUR hb___msgGetShrData( void )
{
USHORT uiSprCls = s_pMethod->uiSprClass;
if( uiSprCls && uiSprCls <= s_uiClasses )
hb_arrayGet( s_pClasses[ uiSprCls - 1 ].pClassDatas, s_pMethod->uiDataShared, hb_stackReturnItem() );
}
/*
* __msgSetShrData()
*
* Internal function to set a SHAREDDATA
*/
static HARBOUR hb___msgSetShrData( void )
{
USHORT uiSprCls = s_pMethod->uiSprClass;
PHB_ITEM pReturn = hb_stackItemFromBase( 1 );
if( uiSprCls && uiSprCls <= s_uiClasses )
{
hb_arraySet( s_pClasses[ uiSprCls - 1 ].pClassDatas, s_pMethod->uiDataShared, pReturn );
}
hb_itemReturn( pReturn );
}
/*
* __msgGetData()
*
* Internal function to return a DATA
*/
static HARBOUR hb___msgGetData( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
USHORT uiIndex = s_pMethod->uiData;
/* will arise only if the class has been modified after first instance */
if( uiIndex > ( USHORT ) hb_arrayLen( pObject ) ) /* Resize needed */
hb_arraySize( pObject, uiIndex ); /* Make large enough */
hb_arrayGet( pObject, uiIndex, hb_stackReturnItem() );
}
/*
* __msgSetData()
*
* Internal function to set a DATA
*/
static HARBOUR hb___msgSetData( void )
{
PHB_ITEM pObject = hb_stackSelfItem();
PHB_ITEM pReturn = hb_stackItemFromBase( 1 );
USHORT uiIndex = s_pMethod->uiData;
/* will arise only if the class has been modified after first instance */
if( uiIndex > ( USHORT ) hb_arrayLen( pObject ) ) /* Resize needed ? */
{
hb_arraySize( pObject, uiIndex ); /* Make large enough */
}
hb_arraySet( pObject, uiIndex, pReturn );
hb_itemReturn( pReturn );
}
/* No comment :-) */
static HARBOUR hb___msgVirtual( void )
{
/* hb_ret(); */ /* NOTE: It's safe to comment this out */
;
}
/* NOTE: Used by the preprocessor to implement Classy compatibility to Harbour
Receive an variable number of param and return an array of it.
No param will return a NULL array */
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++ )
{
PHB_ITEM iTmp = hb_itemParam( n );
hb_itemArrayPut( array, n, iTmp );
hb_itemRelease( iTmp );
}
}
else
{
PHB_ITEM iTmp = hb_itemPutC( NULL, (char *) "HBObject" );
array = hb_itemArrayNew( 1 );
hb_itemArrayPut( array, 1, iTmp );
hb_itemRelease( iTmp );
}
hb_itemRelease( hb_itemReturn( array ) );
}
/* This one is used when HB_NOTOBJECT is defined before HBCLASS.CH */
/* it will avoid any default object to be inherited */
HB_FUNC( __CLS_PAR00 )
{
PHB_ITEM array;
USHORT uiParam = ( USHORT ) hb_pcount();
USHORT n;
array = hb_itemArrayNew( uiParam );
for( n = 1; n <= uiParam; n++ )
{
PHB_ITEM iTmp = hb_itemParam( n );
hb_itemArrayPut( array, n, iTmp );
hb_itemRelease( iTmp );
}
hb_itemRelease( hb_itemReturn( array ) );
}
#ifndef HB_NO_PROFILER
/* profiler: It provides to the HVM the just requested method pointer */
void * hb_mthRequested( void )
{
return ( void * ) s_pMethod;
}
void hb_mthAddTime( void * pMethod, ULONG ulClockTicks )
{
if( pMethod != NULL )
{
( ( PMETHOD ) pMethod )->ulCalls++; /* Profiler */
( ( PMETHOD ) 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 )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
USHORT uiAt = ( USHORT ) ( ( hb_cls_MsgToNum( pMsg ) % pClass->uiHashKey ) * BUCKET );
USHORT uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
USHORT uiLimit = ( USHORT ) ( uiAt ? ( uiAt - 1 ) : ( uiMask - 1 ) );
PMETHOD pMethod;
while( uiAt != uiLimit )
{
if( pClass->pMethods[ uiAt ].pMessage->pSymbol->pDynSym = pMsg )
{
pMethod = pClass->pMethods + uiAt;
hb_stornl( pMethod->ulCalls, -1, 1 );
hb_stornl( pMethod->ulTime, -1, 2 );
return;
}
uiAt++;
if( uiAt == uiMask )
uiAt = 0;
}
}
}
#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 - 1 );
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET ); /* Number of Hash keys */
USHORT uiAt;
hb_itemRelease( pReturn );
pReturn = hb_itemArrayNew( 0 );
/* Create a transfer array */
for( uiAt = 0; uiAt < uiLimit; uiAt++ )
{
PHB_DYNS pMessage = ( PHB_DYNS ) pClass->pMethods[ uiAt ].pMessage;
if( pMessage && pClass->pMethods[ uiAt ].bIsPersistent ) /* Hash Entry used ? */
{
PHB_ITEM pItem = hb_itemPutC( NULL, pMessage->pSymbol->szName );
/* Add to array */
hb_arrayAdd( pReturn, pItem );
hb_itemRelease( pItem );
}
}
}
hb_itemRelease( hb_itemReturn( 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 )
{
uiPrevClassHandle = pObject->item.asArray.value->uiClass;
pObject->item.asArray.value->uiClass = ( USHORT ) hb_parnl( 2 );
}
hb_retnl( uiPrevClassHandle );
}
/* Harbour equivalent for Clipper internal __mdCreate() */
USHORT hb_clsCreate( USHORT usSize, char * szClassName )
{
PHB_DYNS pDynSym = hb_dynsymGet( "__CLSNEW" );
hb_vmPushSymbol( pDynSym->pSymbol );
hb_vmPushNil();
hb_vmPushString( szClassName, strlen( szClassName ) );
hb_vmPushLong( usSize );
hb_vmFunction( 2 );
return ( USHORT ) hb_parnl( -1 );
}
/* Harbour equivalent for Clipper internal __mdAdd() */
void hb_clsAdd( USHORT usClassH, char * szMethodName, PHB_SYMB pFuncSym )
{
PHB_DYNS pDynSym = hb_dynsymGet( "__CLSADDMSG" );
hb_vmPushSymbol( pDynSym->pSymbol );
hb_vmPushNil();
hb_vmPushLong( usClassH );
hb_vmPushString( szMethodName, strlen( szMethodName ) );
hb_vmPushSymbol( pFuncSym );
hb_vmFunction( 3 );
}
/* Harbour equivalent for Clipper internal __mdAssociate() */
void hb_clsAssociate( USHORT usClassH )
{
PHB_DYNS pDynSym = hb_dynsymGet( "__CLSINST" );
hb_vmPushSymbol( pDynSym->pSymbol );
hb_vmPushNil();
hb_vmPushLong( usClassH );
hb_vmFunction( 1 );
}
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