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f4a4d1f980eafec246cd57fb80ea312d42679ad4
harbour-core/harbour/source/vm/classes.c
Ron Pinkas f4a4d1f980 2000-06-07 22:50 UTC-0800 Ron Pinkas <Ron@Profit-Master.com> 
* include/hbpp.h
  * source/compiler/harbour.c
  * source/pp/ppcore.c
    * Modified hb_pp_SetRules() to receive 2nd parameter BOOL hb_comp_bQuiet, since ppcore is part of PP.lib which is linked
      into HBRUN.exe which does not include harbour.c where hb_comp_bQuiet is defined.

  * source/compiler/harbour.l
    ! Fixed parse error on IF [...]

  * source/vm/classes.c
    Posted patch provided by JF

  * source/rtl/tobject.prg
    Posted missing file provided by JF
2000-06-09 06:59:56 +00:00

1971 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 of the License, or
* (at your option) any later version, with one exception:
*
* The exception is that if you link the Harbour Runtime Library (HRL)
* and/or the Harbour Virtual Machine (HVM) 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 HRL
* and/or HVM code into it.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
* their web site at http://www.gnu.org/).
*
*/
/*
* 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 Victor Szakats <info@szelvesz.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 JF. Lefebvre <jfl@mafact.com> & RA. Cuylen <rac@mafact.com>
* hb_clsDictRealloc() New version
*
* Copyright 2000 JF. Lefebvre <jfl@mafact.com> & RA. Cuylen <rac@mafact.com>
* Now support of shared and not shared class data
* Multiple inheritence fully implemented
* Multiple datas declaration fully supported
* Super msg correctly respond by a super object
* Scoping : working for protected, hidden and readonly
* Define of HB_MASKHIDDEN allow subclass to not inherit of hidden message
* This implie a message not found error in place of protection error hidden
*
* 06/07/2000
* Now, Each object instance will hold one object instance of all its parents
* The first one has the same pointer as SUPER and __SUPER msgs.
* See hb___msgSuper()
* Each inherited data will now has a pointer linked to it's original object's position
*
* hb___msgGetShrData()
* hb___msgSetShrData()
* hb___msgClsParent()
* __CLS_PARAM() (Now, all class inherit automaticly from TObject Class)
* __CLSPARENT()
* __SENDER()
* __CLSINST() (Call to hb__clsinst())
* hb_cls_MsgToNum() (New Hashing method to allow a better use of buckets)
* hb_clsIsParent()
* hb_clsScope()
* hb__clsinst() (Mostly new one, called recursively)
* hb___msgSuper() (New one)
* hb___msgSetData() (Enhanced regarding herited datas)
* hb___msgGetData() (Enhanced regarding herited datas)
*
* ...and many minors (and not so minors ;-) modifications ( for TObject by ex.)
*
* See doc/license.txt for licensing terms.
*
*/
#include "hbapi.h"
#include "hbapierr.h"
#include "hbapiitm.h"
#include "hbvm.h"
#include "hboo.ch"
#include <ctype.h>
typedef struct
{
PHB_DYNS pMessage; /* Method Symbolic name */
PHB_FUNC pFunction; /* Function 'pointer' */
USHORT uiData; /* Item position for data (Harbour like, begin from 1) */
USHORT uiDataShared; /* Item position for datashared (C like, begin from 0) */
USHORT uiSprClass; /* Originalclass'handel (super or current class'handel if not herited). */ //Added by RAC&JF
USHORT uiScope; /* Scoping value */
PHB_ITEM pInitValue; /* Item Value and value for data (could be initiated by INIT KeyWord) */
BYTE bClsDataInitiated; /* There is one value assigned at init time */
} 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 * pSharedDatas; /* C Array for ClassDatas Shared Item pointer (hb_Alloc of pointer) */ //Added by RAC&JF
/* This is _NOT_ a Harbour array*/
PHB_ITEM pInlines; /* Array for inline codeblocks */
PHB_FUNC pFunError; /* error handler for not defined messages */
} CLASS, * PCLASS;
#define BASE_METHODS 255 /* starting maximum number of message */
#define BUCKET 5
#define HASH_KEY ( BASE_METHODS / BUCKET ) /* Idealy, here we want a "nombre premier" */
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] */
static PHB_DYNS s_msgClassName = NULL;
static PHB_DYNS s_msgClassH = NULL;
static PHB_DYNS s_msgEval = NULL;
static PHB_DYNS s_msgClassSel = NULL;
static PHB_DYNS s_msgClsParent = NULL;
/* All functions contained in classes.c */
static void hb_clsScope( PHB_ITEM pObject, PMETHOD pMethod );
static ULONG hb_cls_MsgToNum( PHB_DYNS pMsg );
static BOOL hb_clsIsParent( PCLASS pClass, char * szParentName );
static void hb_clsDictRealloc( PCLASS pClass );
static void hb_clsRelease( PCLASS );
void hb_clsReleaseAll( void );
char * hb_objGetClsName( PHB_ITEM pObject );
PHB_FUNC hb_objGetMethod( PHB_ITEM, PHB_SYMB );
ULONG hb_objHasMsg( PHB_ITEM pObject, char * szString );
PHB_ITEM hb__clsinst( USHORT uiClass );
static HARBOUR hb___msgClsH( void );
static HARBOUR hb___msgClsName( void );
static HARBOUR hb___msgClsSel( void );
static HARBOUR hb___msgSuper( void );
static HARBOUR hb___msgEvalInline( void );
static HARBOUR hb___msgClsParent( void );
static HARBOUR hb___msgEval( void );
static HARBOUR hb___msgVirtual( void );
static HARBOUR hb___msgGetClsData( void );
static HARBOUR hb___msgSetClsData( void );
static HARBOUR hb___msgGetShrData( void );
static HARBOUR hb___msgSetShrData( void );
static HARBOUR hb___msgGetData( void );
static HARBOUR hb___msgSetData( void );
/* ================================================ */
/*
* 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;
USHORT ui;
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
USHORT nOccurs = 1;
while( nOccurs != 0 )
{
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 */
{
memcpy(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_errInternal( 9999, "Not able to realloc classmessage! __clsDictRealloc", NULL, NULL );
}
}
}
pClass->uiHashKey = uiNewHashKey;
hb_xfree( pClass->pMethods );
pClass->pMethods = pNewMethods;
}
}
/*
* 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 );
if( pClass->pSharedDatas )
hb_xfree( pClass->pSharedDatas ); /* At least one shared data exist */
hb_itemRelease( pClass->pClassDatas );
hb_itemRelease( pClass->pInlines );
}
/*
* hb_clsReleaseAll()
*
* Release all classes
*/
void hb_clsReleaseAll( void )
{
USHORT 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 );
}
void hb_clsScope( PHB_ITEM pObject, PMETHOD pMethod )
{
PHB_ITEM pBase = hb_stack.pBase;
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 * szNameBase;
char * szNameObject;
while( ( iLevel-- > 0 ) && pBase != hb_stack.pItems )
pBase = hb_stack.pItems + pBase->item.asSymbol.stackbase;
szNameBase = hb_objGetClsName( pBase + 1 );
szNameObject = hb_objGetClsName( pObject );
if( iLevel == -1 )
{
if( ( pBase + 1 )->type == HB_IT_ARRAY ) /* it is a message */
{
if( ( uiScope & HB_OO_CLSTP_PROTECTED ) == HB_OO_CLSTP_PROTECTED )
{
bRetVal = ( strcmp( szNameBase, szNameObject ) != 0 );
if( bRetVal )
{
strcpy( szName, szNameObject );
strcat( szName, ":" );
strcat( szName, pMessage->pSymbol->szName );
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (protected)", szName );
}
}
/* if HB_CLS_MASKHIDDEN defined, a call to a hidden msg will result to a msg not found error. */
#ifndef HB_CLS_MASKHIDDEN
if( ( uiScope & HB_OO_CLSTP_HIDDEN ) == HB_OO_CLSTP_HIDDEN )
{
if( ( uiScope & HB_OO_CLSTP_SUPER ) == HB_OO_CLSTP_SUPER )
bRetVal = TRUE;
else
bRetVal = ( strcmp( szNameBase, szNameObject ) != 0 );
if( bRetVal )
{
strcpy( szName, szNameObject );
strcat( szName, ":" );
strcat( szName, pMessage->pSymbol->szName );
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (hidden)", szName );
}
}
#endif
}
else if( ( uiScope & HB_OO_CLSTP_PROTECTED ) == HB_OO_CLSTP_PROTECTED )
{
strcpy( szName, szNameObject );
strcat( szName, ":" );
strcat( szName, pMessage->pSymbol->szName );
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (protected)", szName );
}
#ifndef HB_CLS_MASKHIDDEN
else if( ( uiScope & HB_OO_CLSTP_HIDDEN ) == HB_OO_CLSTP_HIDDEN )
{
strcpy( szName, szNameObject );
strcat( szName, ":" );
strcat( szName, pMessage->pSymbol->szName );
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (hidden)", szName );
}
#endif
if( ( uiScope & HB_OO_CLSTP_READONLY ) == HB_OO_CLSTP_READONLY )
{
if(
( pMethod->pFunction == hb___msgSetData ) ||
( pMethod->pFunction == hb___msgSetClsData ) ||
( pMethod->pFunction == hb___msgSetShrData )
)
bRetVal = TRUE;
if( bRetVal )
{
strcpy( szName, szNameObject );
strcat( szName, ":" );
strcat( szName, pMessage->pSymbol->szName );
hb_errRT_BASE( EG_NOMETHOD, 1004, "Scope violation (readonly)", szName );
}
}
}
}
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( PCLASS pClass, char * szParentName )
{
USHORT uiAt, uiLimit;
uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
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;
}
/* ================================================ */
/*
* <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:
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;
}
/*
* <pFunc> = hb_objGetMethod( <pObject>, <pMessage> )
*
* Internal function to the function pointer of a message of an object
*/
PHB_FUNC hb_objGetMethod( PHB_ITEM pObject, PHB_SYMB pMessage )
{
USHORT uiClass;
PHB_DYNS pMsg = pMessage->pDynSym;
HB_TRACE(HB_TR_DEBUG, ("hb_objGetMethod(%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 ) );
s_pMethod = NULL; /* Current method pointer */
while( uiAt != uiLimit )
{
if( pClass->pMethods[ uiAt ].pMessage == pMsg )
{
s_pMethod = pClass->pMethods + uiAt;
hb_clsScope( pObject, s_pMethod );
return s_pMethod->pFunction;
}
uiAt++;
if( uiAt == uiMask )
uiAt = 0;
}
}
/*Compatibility issue (and for 'HardCoded Object') !
should never be used as we autoinhertit from TObject. See New __cls_param. [R<>C&JfL]*/
if( s_msgClassName == NULL )
{
s_msgClassName = hb_dynsymGet( "CLASSNAME" ); /* Standard messages */
s_msgClassH = hb_dynsymGet( "CLASSH" ); /* Not present in classdef. */
s_msgClassSel = hb_dynsymGet( "CLASSSEL" );
s_msgEval = hb_dynsymGet( "EVAL" );
s_msgClsParent = hb_dynsymGet( "ISDERIVEDFROM" );
}
if( pMsg == s_msgClassName )
return hb___msgClsName;
else if( pMsg == s_msgClassH )
return hb___msgClsH;
else if( pMsg == s_msgClassSel )
return hb___msgClsSel;
else if( pMsg == s_msgEval )
return hb___msgEval;
else if( pMsg == s_msgClsParent )
return hb___msgClsParent;
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
if( pClass->pFunError )
return pClass->pFunError;
}
return NULL;
}
/*
* <uPtr> = hb_objHasMsg( <pObject>, <szString> )
*
* Check whether <szString> is an existing message for object.
*
* <uPtr> should be read as a boolean
*/
ULONG 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 ( ULONG ) hb_objGetMethod( pObject, pDynSym->pSymbol );
else
return 0;
} /* Get funcptr of message */
/* ================================================ */
/*
* __clsAddMsg( <hClass>, <cMessage>, <pFunction>, <nType>, [xInit], <uiScope> )
*
* 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> Optional initializer for DATA
* <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_FUNC( __CLSADDMSG )
{
USHORT uiClass = ( USHORT ) hb_parni( 1 );
USHORT uiScope = ( USHORT ) (ISNUM( 6 ) ? hb_parni( 6 ) : HB_OO_CLSTP_EXPORTED );
if( uiClass && uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
PHB_DYNS pMessage = hb_dynsymGet( hb_parc( 2 ) );
USHORT wType = ( USHORT ) hb_parni( 4 );
USHORT uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMessage ) ) % pClass->uiHashKey ) * BUCKET );
USHORT uiMask = ( USHORT ) ( pClass->uiHashKey * BUCKET );
PMETHOD pNewMeth;
if( wType == HB_OO_MSG_INLINE && hb_param( 3, HB_IT_BLOCK ) == NULL )
hb_errRT_BASE( EG_ARG, 3000, NULL, "__CLSADDMSG" );
if( pClass->uiMethods > ( pClass->uiHashKey * BUCKET * 2 / 3 ) )
hb_clsDictRealloc( pClass );
/* Find either the existing message or an open spot for a new message */
while(
pClass->pMethods[ uiAt ].pMessage
&&
( strcmp( pClass->pMethods[ uiAt ].pMessage->pSymbol->szName, pMessage->pSymbol->szName ) != 0 )
)
uiAt = ( USHORT ) ( ( uiAt == uiMask ) ? 0 : uiAt + 1 );
pNewMeth = pClass->pMethods + uiAt;
if( !pNewMeth->pMessage )
{
pNewMeth->pMessage = pMessage;
pClass->uiMethods++; /* One more message */
}
pNewMeth->uiSprClass = uiClass; /* no(t)w yet used */
switch( wType )
{
case HB_OO_MSG_METHOD:
pNewMeth->pFunction = ( PHB_FUNC ) hb_parnl( 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->pFunction = hb___msgSetData;
else
{
PHB_ITEM pInit = hb_param( 5, HB_IT_ANY );
pNewMeth->pFunction = hb___msgGetData;
if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */
{
if( HB_IS_ARRAY( pInit ) )
pNewMeth->pInitValue = hb_arrayClone( pInit );
else
{
pNewMeth->pInitValue = hb_itemNew( NULL );
hb_itemCopy( pNewMeth->pInitValue, pInit );
}
}
}
break;
case HB_OO_MSG_CLASSDATA:
pNewMeth->uiData = ( USHORT ) hb_parnl( 3 );
pNewMeth->uiScope = uiScope;
if( ( pNewMeth->uiScope & HB_OO_CLSTP_SHARED ) != HB_OO_CLSTP_SHARED )
{
if( ( USHORT ) hb_arrayLen( pClass->pClassDatas ) < pNewMeth->uiData )
{
hb_arraySize( pClass->pClassDatas, pNewMeth->uiData );
}
if( pMessage->pSymbol->szName[ 0 ] == '_' )
pNewMeth->pFunction = hb___msgSetClsData;
else
{
PHB_ITEM pInit = hb_param( 5, HB_IT_ANY );
pNewMeth->pFunction = hb___msgGetClsData;
if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */
{
if( HB_IS_ARRAY( pInit ) )
pNewMeth->pInitValue = hb_arrayClone( pInit );
else
{
pNewMeth->pInitValue = hb_itemNew( NULL );
hb_itemCopy( pNewMeth->pInitValue, pInit );
}
}
}
}
else
{
if( ( USHORT ) hb_arrayLen( pClass->pClassDatas ) < pNewMeth->uiData )
{
PHB_ITEM pTmpItemPtr;
hb_arraySize( pClass->pClassDatas, pNewMeth->uiData );
/* Get a copy of the item pointer (not the value!) */
pTmpItemPtr = hb_arrayGetItemPtr( pClass->pClassDatas, pNewMeth->uiData );
pClass->uiDatasShared++;
/* Alloc or realloc PtrArray */
if( pClass->pSharedDatas )
pClass->pSharedDatas = ( PHB_ITEM * ) hb_xrealloc( pClass->pSharedDatas, pClass->uiDatasShared * sizeof( PHB_ITEM ) );
else
pClass->pSharedDatas = ( PHB_ITEM * ) hb_xgrab( sizeof( PHB_ITEM ) );
/* Store the C array offset */
pNewMeth->uiDataShared = ( USHORT ) ( pClass->uiDatasShared - 1 );
/* Now store the Ptr itself */
pClass->pSharedDatas[ pNewMeth->uiDataShared ] = ( PHB_ITEM ) pTmpItemPtr;
}
if( pMessage->pSymbol->szName[ 0 ] == '_' )
pNewMeth->pFunction = hb___msgSetShrData;
else
{
PHB_ITEM pInit = hb_param( 5, HB_IT_ANY );
pNewMeth->pFunction = hb___msgGetShrData;
if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */
{
if( HB_IS_ARRAY( pInit ) )
pNewMeth->pInitValue = hb_arrayClone( pInit );
else
{
pNewMeth->pInitValue = hb_itemNew( NULL );
hb_itemCopy( pNewMeth->pInitValue, pInit );
}
}
}
}
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->pFunction = hb___msgEvalInline;
break;
case HB_OO_MSG_VIRTUAL:
pNewMeth->pFunction = hb___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->pFunction = hb___msgSuper;
break;
case HB_OO_MSG_ONERROR:
pClass->pFunError = ( PHB_FUNC ) hb_parnl( 2 );
break;
default:
hb_errInternal( IE_CLSINVMETHOD, NULL, "__clsAddMsg", NULL );
break;
}
}
}
/*
* <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)
* <ahSuper> Optional superclass(es) Object instance
*/
HB_FUNC( __CLSNEW )
{
PCLASS pNewCls;
USHORT uiSize;
PHB_ITEM pahSuper;
USHORT i, uiSuper;
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 = ( char * ) hb_xgrab( hb_parclen( 1 ) + 1 );
memset(pNewCls->szName,0,hb_parclen( 1 ) + 1);
strcpy( pNewCls->szName, hb_parc( 1 ) );
pNewCls->uiDataFirst = 0;
pNewCls->uiMethods = 0;
pNewCls->uiDatasShared = 0;
if( uiSuper )
{
for( i = 1; i <= uiSuper; i++ )
{
PHB_DYNS pMsg;
PHB_ITEM pSuper;
PHB_ITEM pClsAnyTmp;
USHORT nSuper;
USHORT nLen, nLenShrDatas = 0, nLenClsDatas = 0, nLenInlines = 0;
USHORT ui, uiAt, uiLimit;
PCLASS pSprCls;
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 ) );
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->pSharedDatas = 0;
if( pSprCls->pSharedDatas )
{
pNewCls->pSharedDatas = ( PHB_ITEM * ) hb_xgrab( sizeof( PHB_ITEM ) * pSprCls->uiDatasShared );
pNewCls->uiDatasShared = pSprCls->uiDatasShared;
hb_xmemcpy( pNewCls->pSharedDatas, pSprCls->pSharedDatas, sizeof( PHB_ITEM ) * pSprCls->uiDatasShared );
}
pNewCls->pInlines = hb_arrayClone( pSprCls->pInlines );
}
else
{
/* Ok add now the previous len to the offset */
nLenShrDatas += pNewCls->uiDatasShared;
nLenClsDatas += ( USHORT ) hb_itemSize( pNewCls->pClassDatas );
nLenInlines += ( USHORT ) hb_itemSize( pNewCls->pInlines );
/* 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 */
if( pSprCls->uiDatasShared )
{
if( pNewCls->pSharedDatas )
{
pNewCls->pSharedDatas = ( PHB_ITEM * ) hb_xrealloc( pNewCls->pSharedDatas, pSprCls->uiDatasShared * sizeof( PHB_ITEM ) );
hb_xmemcpy(pNewCls->pSharedDatas + pNewCls->uiDatasShared , pSprCls->pSharedDatas , pSprCls->uiDatasShared * sizeof( PHB_ITEM ) );
pNewCls->uiDatasShared += pSprCls->uiDatasShared;
}
else
{
pNewCls->pSharedDatas = ( PHB_ITEM * ) hb_xgrab( sizeof( PHB_ITEM ) * pSprCls->uiDatasShared );
pNewCls->uiDatasShared = pSprCls->uiDatasShared;
hb_xmemcpy( pNewCls->pSharedDatas, pSprCls->pSharedDatas, sizeof( PHB_ITEM ) * 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( ( pNewCls->uiMethods + 1 ) > ( pNewCls->uiHashKey * BUCKET * 2/3 ) )
hb_clsDictRealloc( pNewCls );
if( i == 1 )
{
uiSize = ( USHORT ) ( pNewCls->uiHashKey * BUCKET * sizeof( METHOD ) );
pNewCls->pMethods = ( PMETHOD ) hb_xgrab( uiSize );
memset( pNewCls->pMethods, 0, uiSize );
pNewCls->pFunError = pSprCls->pFunError;
}
for( ui = 0; ui < uiLimit; ui++ )
{
USHORT uiBucket;
pMsg = ( PHB_DYNS ) pSprCls->pMethods[ ui ].pMessage;
if( pMsg )
{
uiAt = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pNewCls->uiHashKey ) * BUCKET ); /* here we are exactly the position for this message in the newcls */
for( uiBucket = 0; uiBucket < BUCKET; uiBucket++ )
{
#ifdef HB_CLS_MASKHIDDEN /* no hidden methods allowed by the inheritence. */
if( ( pSprCls->pMethods[ ui ].uiScope & HB_OO_CLSTP_HIDDEN ) == HB_OO_CLSTP_HIDDEN )
break;
#endif
if( pNewCls->pMethods[ uiAt+uiBucket ].pMessage == 0 ) /* this message position is empty */
{
/* Now, we can increment the msg count */
pNewCls->uiMethods++;
memcpy(pNewCls->pMethods + ( uiAt+uiBucket ), pSprCls->pMethods + ui, sizeof( METHOD ) );
if(
pNewCls->pMethods[ uiAt+uiBucket ].pFunction == hb___msgSetClsData
||
pNewCls->pMethods[ uiAt+uiBucket ].pFunction == hb___msgGetClsData
)
pNewCls->pMethods[ uiAt+uiBucket ].uiData += nLenClsDatas;
if(
pNewCls->pMethods[ uiAt+uiBucket ].pFunction == hb___msgSetShrData
||
pNewCls->pMethods[ uiAt+uiBucket ].pFunction == hb___msgGetShrData
)
{
pNewCls->pMethods[ uiAt+uiBucket ].uiData += nLenClsDatas; /* in all case will never used */
pNewCls->pMethods[ uiAt+uiBucket ].uiDataShared += nLenShrDatas;
}
if( pNewCls->pMethods[ uiAt+uiBucket ].pFunction == hb___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 )
{
PHB_ITEM pInitValue;
if( HB_IS_ARRAY( pSprCls->pMethods[ ui ].pInitValue ) )
pNewCls->pMethods[ uiAt+uiBucket ].pInitValue = hb_arrayClone( pSprCls->pMethods[ ui ].pInitValue );
else
{
pInitValue = hb_itemNew( NULL );
hb_itemCopy( pInitValue, pSprCls->pMethods[ ui ].pInitValue );
pNewCls->pMethods[ uiAt+uiBucket ].pInitValue = pInitValue;
}
}
break;
}
else if( strcmp( pNewCls->pMethods[ uiAt+uiBucket ].pMessage->pSymbol->szName, pMsg->pSymbol->szName ) == 0 )
break;
}
}
}
}
}
else
{
pNewCls->uiDatas = ( USHORT ) hb_parni( 2 );
pNewCls->uiDataFirst = 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->pSharedDatas = 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_FUNC pFunc = pClass->pMethods[ uiAt ].pFunction;
if( pFunc == hb___msgEvalInline ) /* INLINE method deleted */
{
hb_arrayDel( pClass->pInlines, pClass->pMethods[ uiAt ].uiData );
/* Delete INLINE block */
}
/* Move messages */
while( pClass->pMethods[ uiAt ].pMessage && uiAt != uiLimit )
{
memcpy( 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 ) );
hb_itemCopy( &hb_stack.Return, pSelf );
hb_itemRelease(pSelf);
}
/*
* [<o(Super)Object>] := hb__clsinst( <hClass> )
*
* Create a (super)object from class definition <hClass>
*/
PHB_ITEM hb__clsinst( USHORT uiClass )
{
PHB_ITEM pSelf = hb_itemNew( NULL );
if( uiClass <= s_uiClasses )
{
PCLASS pClass = s_pClasses + ( uiClass - 1 );
PHB_ITEM pSprObj, pTmp;
PHB_ITEM * ppObjects = 0;
USHORT uiAt, uiCnt, uiSize=0;
USHORT uiLimit = ( USHORT ) ( pClass->uiHashKey * BUCKET );
PMETHOD pMeth = pClass->pMethods; /* Initialize DATA */
hb_arrayNew( pSelf, pClass->uiDatas );
pSelf->item.asArray.value->uiClass = uiClass;
pSelf->item.asArray.value->uiPrevCls = 0;
for( uiAt = 0; uiAt < uiLimit; uiAt++, pMeth++ )
{
if( ( pMeth->uiScope & HB_OO_CLSTP_CLASS ) == HB_OO_CLSTP_CLASS
&&
( pMeth->uiScope & HB_OO_CLSTP_SUPER ) != HB_OO_CLSTP_SUPER
)
{
pSprObj = hb__clsinst( pMeth->uiSprClass ); /*instance super object*/
hb_arraySet( pSelf, pMeth->uiData, pSprObj );
uiSize ++ ;
if( !ppObjects )
ppObjects = ( PHB_ITEM * ) hb_xgrab( sizeof( PHB_ITEM ) );
else
ppObjects = ( PHB_ITEM * ) hb_xrealloc( ppObjects, uiSize * sizeof( PHB_ITEM ) );
pTmp = hb_arrayGetItemPtr( pSelf, pMeth->uiData );
ppObjects[ uiSize - 1 ] = pTmp;
hb_itemRelease( pSprObj );
}
}
pMeth = pClass->pMethods;
for( uiAt = 0; uiAt < uiLimit; uiAt++, pMeth++ )
{
if( ( pMeth->uiScope & HB_OO_CLSTP_SUPER ) == HB_OO_CLSTP_SUPER )
if( ( pMeth->pFunction == hb___msgSetData ) || ( pMeth->pFunction == hb___msgGetData ) )
for( uiCnt = 1; uiCnt <= uiSize; uiCnt++ )
{
pTmp = ppObjects[ uiCnt - 1 ];
if( pTmp->item.asArray.value->uiClass == pMeth->uiSprClass )
{
USHORT ui, uiBucket;
PHB_DYNS pMsg;
PCLASS pSprCls;
PHB_ITEM pDataHrtd, pPtrNum;
pMsg = ( PHB_DYNS ) pMeth->pMessage;
pSprCls = s_pClasses + ( pMeth->uiSprClass - 1 );
ui = ( USHORT ) ( ( ( hb_cls_MsgToNum( pMsg ) ) % pSprCls->uiHashKey ) * BUCKET );
for( uiBucket = 0; uiBucket < BUCKET; uiBucket++ )
if( strcmp( pMsg->pSymbol->szName, pSprCls->pMethods[ ui+uiBucket ].pMessage->pSymbol->szName ) == 0 )
break;
pDataHrtd = ( PHB_ITEM ) hb_arrayGetItemPtr( pTmp, pSprCls->pMethods[ ui+uiBucket ].uiData );
pPtrNum = hb_itemNew( NULL );
hb_itemPutNL( pPtrNum, ( ULONG ) pDataHrtd );
hb_itemArrayPut( pSelf , pMeth->uiData, pPtrNum );
hb_itemRelease( pPtrNum );
}
}
if( pMeth->pInitValue && !( pMeth->bClsDataInitiated ) )
{
if( ( pMeth->pFunction == hb___msgGetData ) ) /* is a DATA */
{
if( HB_IS_ARRAY( pMeth->pInitValue ) )
{
PHB_ITEM pInitValue = hb_arrayClone( pMeth->pInitValue );
hb_itemArrayPut( pSelf, pMeth->uiData, pInitValue );
hb_itemRelease( pInitValue );
}
else
hb_itemArrayPut( pSelf, pMeth->uiData,
pMeth->pInitValue );
}
else if( pMeth->pFunction == hb___msgGetClsData ) /* it is a ClassData */
{
HB_ITEM init;
hb_arrayGet( pClass->pClassDatas, pMeth->uiData, &init );
if( init.type == HB_IT_NIL )
{
hb_arraySet( pClass->pClassDatas, pMeth->uiData, pMeth->pInitValue );
pMeth->bClsDataInitiated = 1;
}
hb_itemClear( &init );
}
else if( pMeth->pFunction == hb___msgGetShrData ) /* it is a ClassData SHARED */
{
HB_ITEM init;
hb_itemCopy( &init , *(pClass->pSharedDatas + pMeth->uiDataShared) );
if( init.type == HB_IT_NIL )
{
hb_itemCopy( *( pClass->pSharedDatas + pMeth->uiDataShared ), pMeth->pInitValue );
pMeth->bClsDataInitiated = 1;
}
hb_itemClear( &init );
}
}
}
if( ppObjects )
hb_xfree( ppObjects );
}
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_FUNC pFunc = pClass->pMethods[ uiAt ].pFunction;
if( pFunc == hb___msgEvalInline ) /* INLINE method changed */
{
PHB_ITEM pBlock = hb_param( 3, HB_IT_BLOCK );
if( pBlock == NULL )
hb_errRT_BASE( EG_ARG, 3000, NULL, "__CLSMODMSG" );
else
hb_arraySet( pClass->pInlines, pClass->pMethods[ uiAt ].uiData, pBlock );
}
else if( ( pFunc == hb___msgSetData ) || ( pFunc == hb___msgGetData ) )
{ /* Not allowed for DATA */
hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a DATA item", "__CLSMODMSG" );
}
else /* Modify METHOD */
pClass->pMethods[ uiAt ].pFunction = ( PHB_FUNC ) hb_parnl( 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 ) != 0 );
else
hb_errRT_BASE( EG_ARG, 3000, NULL, "__OBJHASMSG" );
}
/*
* <oNew> := __objClone( <oOld> )
*
* Clone an object. Note the similarity with aClone ;-)
*/
HB_FUNC( __OBJCLONE )
{
PHB_ITEM pSrcObject = hb_param( 1, HB_IT_OBJECT );
if( pSrcObject )
{
PHB_ITEM pDstObject = hb_arrayClone( pSrcObject );
hb_itemReturn( pDstObject );
hb_itemRelease( pDstObject );
}
else
hb_errRT_BASE( EG_ARG, 3001, NULL, "__OBJCLONE" );
}
/*
* <xRet> = __objSendMsg( <oObj>, <cSymbol>, <xArg,..>
*
* Send a message to an object
*/
HB_FUNC( __OBJSENDMSG )
{
PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT );
PHB_ITEM pMessage = hb_param( 2, HB_IT_STRING );
if( pMessage && pObject ) /* Object & message passed */
{
PHB_DYNS pMsg = hb_dynsymFindName( pMessage->item.asString.value );
if( pMsg )
{
USHORT uiParam;
hb_vmPush( pObject ); /* Push object */
hb_vmMessage( pMsg->pSymbol );
/* Push char symbol as message */
for( uiParam = 3; uiParam <= hb_pcount(); uiParam++ ) /* Push arguments on stack */
hb_vmPush( hb_param( uiParam, HB_IT_ANY ) );
hb_vmDo( ( USHORT ) ( hb_pcount() - 2 ) ); /* Execute message */
}
}
else
hb_errRT_BASE( EG_ARG, 3000, NULL, "__OBJSENDMSG" );
}
/*
* <hClass> := __clsInstSuper( <cName> )
*
* Instance super class and return class handle
*/
HB_FUNC( __CLSINSTSUPER )
{
PHB_ITEM pString = hb_param( 1, HB_IT_STRING );
BOOL bFound = FALSE;
if( pString )
{
PHB_DYNS pDynSym = hb_dynsymFind( pString->item.asString.value );
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_stack.Return ) )
{
for( uiClass = 0; ! bFound && uiClass < s_uiClasses; uiClass++ )
{ /* Locate the entry */
if( hb_stricmp( pString->item.asString.value, 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" );
}
else
hb_errRT_BASE( EG_ARG, 3003, "Cannot find super class", "__CLSINSTSUPER" );
}
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 decrease
*/
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 */
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_itemRelease( pReturn );
pReturn = hb_itemArrayNew( 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_itemPutC( NULL, pMessage->pSymbol->szName );
/* Add to array */
hb_itemArrayPut( pReturn, ++uiPos, pItem );
hb_itemRelease( pItem );
}
}
}
hb_itemReturn( pReturn );
hb_itemRelease( pReturn );
}
/* to be used from Classes ERROR HANDLER method */
HB_FUNC( __GETMESSAGE )
{
PHB_ITEM pBase = hb_stack.pBase;
pBase = hb_stack.pItems + pBase->item.asSymbol.stackbase;
hb_retc( pBase->item.asSymbol.value->szName );
}
/* 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 *) "TObject" );
array = hb_itemArrayNew( 1 );
hb_itemArrayPut( array, 1, iTmp );
hb_itemRelease( iTmp );
}
hb_itemReturn( array );
hb_itemRelease( array );
}
HB_FUNC( __CLSPARENT )
{
hb_retl( hb_clsIsParent( s_pClasses + ( hb_parni( 1 ) - 1 ), hb_parc( 2 ) ) );
}
HB_FUNC( __SENDER )
{
PHB_ITEM pBase = hb_stack.pBase;
PHB_ITEM oSender;
USHORT iLevel = 3;
while( iLevel > 0 && pBase != hb_stack.pItems )
{
pBase = hb_stack.pItems + pBase->item.asSymbol.stackbase;
oSender = pBase + 1;
if( ( iLevel-- == 2 && ( oSender )->type != HB_IT_BLOCK ) || ( oSender )->type == HB_IT_NIL )
break;
}
if( iLevel == 0 && ( oSender )->type == HB_IT_OBJECT )
hb_itemCopy(&hb_stack.Return, 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 );
}
/* Work in progress.
* Added by R<>C&JfL
*
* based on hb___msgEval( void )
*/
HB_FUNC( __EVAL )
{
PHB_ITEM pObject = hb_itemParam( 1 );
if( HB_IS_BLOCK( pObject ) )
{
USHORT uiParam;
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( pObject ); /* Push block */
for( uiParam = 1; uiParam <= hb_pcount(); uiParam++ )
hb_vmPush( hb_param( uiParam, HB_IT_ANY ) );
hb_vmDo( ( USHORT ) hb_pcount() ); /* Self is also an argument */
}
else
{
PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_NOMETHOD, 1004, NULL, "EVAL" );
if( pResult )
{
hb_itemReturn( pResult );
hb_itemRelease( pResult );
}
}
hb_itemRelease( pObject );
}
/* ================================================ */
/*
* <hClass> := <obj>:ClassH()
*
* Returns class handle of <obj>
*/
static HARBOUR hb___msgClsH( void )
{
if( HB_IS_ARRAY( hb_stack.pBase + 1 ) )
hb_retni( ( hb_stack.pBase + 1 )->item.asArray.value->uiClass );
else
hb_retni( 0 );
}
/* 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;
PCLASS pClass;
char * szParentName = 0;
USHORT uiClass, i;
if( HB_IS_BYREF( hb_stack.pBase + 1 ) ) /* Variables by reference */
pItemRef = hb_itemUnRef( hb_stack.pBase + 1 );
else
pItemRef = hb_stack.pBase + 1;
uiClass = pItemRef->item.asArray.value->uiClass;
pClass = s_pClasses + ( uiClass - 1 );
pItemParam = hb_stack.pBase + 2;
if( HB_IS_OBJECT( pItemParam ) )
szParentName = hb_objGetClsName( pItemParam );
else if( HB_IS_STRING( pItemParam ) )
szParentName = hb_itemGetC( pItemParam );
for( i = 0; szParentName[ i ] != '\0'; i++ )
szParentName[ i ] = ( char ) toupper( szParentName[ i ] );
hb_retl( hb_clsIsParent( pClass, szParentName ) );
hb_itemFreeC( szParentName );
}
/*
* <cClassName> := <obj>:ClassName()
*
* Return class name of <obj>. Can also be used for all types.
*/
static HARBOUR hb___msgClsName( void )
{
PHB_ITEM pItemRef;
if( HB_IS_BYREF( hb_stack.pBase + 1 ) ) /* Variables by reference */
pItemRef = hb_itemUnRef( hb_stack.pBase + 1 );
else
pItemRef = hb_stack.pBase + 1;
hb_retc( hb_objGetClsName( pItemRef ) );
}
/*
* <aMessages> := <obj>:ClassSel()
*
* Returns all the messages in <obj>
*/
static HARBOUR hb___msgClsSel( void )
{
USHORT uiClass = ( USHORT ) ( HB_IS_ARRAY( hb_stack.pBase + 1 )
? ( hb_stack.pBase + 1 )->item.asArray.value->uiClass : 0 );
/* Get class word */
PHB_ITEM pReturn = hb_itemNew( NULL );
if( ( ! uiClass ) && HB_IS_BYREF( hb_stack.pBase + 1 ) )
{ /* Variables by reference */
PHB_ITEM pItemRef = hb_itemUnRef( hb_stack.pBase + 1 );
if( HB_IS_ARRAY( pItemRef ) )
uiClass = pItemRef->item.asArray.value->uiClass;
}
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_itemRelease( pReturn );
pReturn = hb_itemArrayNew( 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_itemPutC( NULL, pMessage->pSymbol->szName );
/* Add to array */
hb_itemArrayPut( pReturn, ++uiPos, pItem );
hb_itemRelease( pItem );
}
}
}
hb_itemReturn( pReturn );
hb_itemRelease( pReturn );
}
/*
* __msgEvalInline()
*
* Internal function executed for inline methods
*/
static HARBOUR hb___msgEvalInline( void )
{
HB_ITEM block;
USHORT uiClass = ( hb_stack.pBase + 1 )->item.asArray.value->uiClass;
USHORT uiParam;
hb_arrayGet( s_pClasses[ uiClass - 1 ].pInlines, s_pMethod->uiData, &block );
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( &block );
hb_vmPush( hb_stack.pBase + 1 ); /* Push self */
for( uiParam = 1; uiParam <= hb_pcount(); uiParam++ )
hb_vmPush( hb_param( uiParam, HB_IT_ANY ) );
hb_vmDo( ( USHORT ) (hb_pcount() + 1 ) ); /* Self is also an argument */
hb_itemClear( &block ); /* Release block */
}
/*
* __msgEval()
*
* Internal function for the internal EVAL method.
*/
static HARBOUR hb___msgEval( void )
{
if( HB_IS_BLOCK( hb_stack.pBase + 1 ) )
{
USHORT uiParam;
hb_vmPushSymbol( &hb_symEval );
hb_vmPush( hb_stack.pBase + 1 ); /* Push block */
for( uiParam = 1; uiParam <= hb_pcount(); uiParam++ )
hb_vmPush( hb_param( uiParam, HB_IT_ANY ) );
hb_vmDo( ( USHORT ) hb_pcount() ); /* Self is also an argument */
}
else
{
PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_NOMETHOD, 1004, NULL, "EVAL" );
if( pResult )
{
hb_itemReturn( pResult );
hb_itemRelease( pResult );
}
}
}
/*
* __msgGetClsData()
*
* Internal function to return a CLASSDATA
*/
static HARBOUR hb___msgGetClsData( void )
{
USHORT uiClass = ( hb_stack.pBase + 1 )->item.asArray.value->uiClass;
if( uiClass && uiClass <= s_uiClasses )
hb_arrayGet( s_pClasses[ uiClass - 1 ].pClassDatas, s_pMethod->uiData, &hb_stack.Return );
}
/*
* __msgGetShrData()
*
* Internal function to return a SHAREDDATA
*/
static HARBOUR hb___msgGetShrData( void )
{
USHORT uiClass = ( hb_stack.pBase + 1 )->item.asArray.value->uiClass;
if( uiClass && uiClass <= s_uiClasses )
hb_itemReturn( *( s_pClasses[ uiClass - 1 ].pSharedDatas + s_pMethod->uiDataShared ) );
}
/*
* __msgSuper()
*
* Internal function to return a superobject
*/
static HARBOUR hb___msgSuper( void )
{
PHB_ITEM pObject = hb_stack.pBase + 1;
hb_itemCopy( &hb_stack.Return, hb_arrayGetItemPtr( pObject, s_pMethod->uiData ) );
}
/*
* __msgSetClsData()
*
* Internal function to set a CLASSDATA
*/
static HARBOUR hb___msgSetClsData( void )
{
USHORT uiClass = ( hb_stack.pBase + 1 )->item.asArray.value->uiClass;
if( uiClass && uiClass <= s_uiClasses )
{
PHB_ITEM pReturn = hb_stack.pBase + 2;
hb_arraySet( s_pClasses[ uiClass - 1 ].pClassDatas,
s_pMethod->uiData, pReturn );
hb_itemReturn( pReturn );
}
}
/*
* __msgSetShrData()
*
* Internal function to set a SHAREDDATA
*/
static HARBOUR hb___msgSetShrData( void )
{
USHORT uiClass = ( hb_stack.pBase + 1 )->item.asArray.value->uiClass;
if( uiClass && uiClass <= s_uiClasses )
{
PHB_ITEM pReturn = hb_stack.pBase + 2;
hb_itemCopy( *( s_pClasses[ uiClass - 1 ].pSharedDatas + s_pMethod->uiDataShared ), pReturn );
hb_itemReturn( pReturn );
}
}
/*
* __msgGetData()
*
* Internal function to return a DATA
*/
static HARBOUR hb___msgGetData( void )
{
PHB_ITEM pObject = hb_stack.pBase + 1;
USHORT uiIndex = s_pMethod->uiData;
// If it's an herited data, the data reside within it's original Super object
// So we use the know pointer
if( ( s_pMethod->uiScope & HB_OO_CLSTP_SUPER ) == HB_OO_CLSTP_SUPER )
{
PHB_ITEM pPtrNum;
pPtrNum = ( PHB_ITEM ) hb_arrayGetNL( pObject, uiIndex ); // ici j'ai l'adresse
hb_itemCopy( &hb_stack.Return , pPtrNum );
}
else
{
if( uiIndex > ( USHORT ) hb_arrayLen( pObject ) ) /* Resize needed */
{
hb_arraySize( pObject, uiIndex ); /* Make large enough */
}
hb_arrayGet( pObject, uiIndex, &hb_stack.Return );
}
}
/*
* __msgSetData()
*
* Internal function to set a DATA
*/
static HARBOUR hb___msgSetData( void )
{
PHB_ITEM pObject = hb_stack.pBase + 1;
PHB_ITEM pReturn = hb_stack.pBase + 2;
USHORT uiIndex = s_pMethod->uiData;
// If it's an herited data, the data reside within it's original Super object
// So we use the know pointer
if ( ( s_pMethod->uiScope & HB_OO_CLSTP_SUPER ) == HB_OO_CLSTP_SUPER )
{
PHB_ITEM pPtrNum;
pPtrNum = ( PHB_ITEM ) hb_arrayGetNL( pObject, uiIndex );
hb_itemCopy( pPtrNum, pReturn );
}
else
{
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 */
;
}
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