/* * $Id$ */ /* * Harbour Project source code: * Base-routines for OOPS system * * Copyright 1999 Antonio Linares * 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 * :CLASSSEL() * __clsDelMsg() * __clsModMsg() * __clsInstSuper() * __cls_CntClsData() * __cls_CntData() * __cls_DecData() * __cls_IncData() * __objClone() * __objHasMsg() * __objSendMsg() * * Copyright 1999-2001 Viktor Szakats (harbour.01 syenar.hu) * __CLASSNEW() * __CLASSINSTANCE() * __CLASSADD() * __CLASSNAME() * __CLASSSEL() (based on hb___msgClsSel()) * * Copyright 1999 Janica Lubos * hb_clsDictRealloc() * * Copyright 2000 ( ->07/2000 ) JF. Lefebvre & RA. Cuylen ) JF. Lefebvre * 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 * Super msg corrected * Scoping : working for protected, hidden and readonly * To Many enhancement and correction to give a full list :-) * Improved class(y) compatibility * Improved TopClass compatibility * __CLS_PAR00() (Allow the creation of class wich not autoinherit of the default HBObject) * Adding HB_CLS_ENFORCERO FLAG to disable Write access to RO VAR * outside of Constructors /!\ Could be related to some incompatibility * Added hb_objGetRealClsName to keep a full class tree ( for 99% cases ) * Fixed hb_clsIsParent * * * hb_objGetMthd() & __CLSADDMSG modified to translate the followings operators * "+" = __OpPlus "-" = __OpMinus "*" = __OpMult "/" = __OpDivide "%" = __OpMod "^" = __OpPower "**" = __OpPower "++" = __OpInc "--" = __OpDec "==" = __OpEqual "=" = __OpEqual (same as "==") "!=" = __OpNotEqual "<>" = __OpNotEqual (same as "!=") "#" = __OpNotEqual (same as "!=") "<" = __OpLess "<=" = __OpLessEqual ">" = __OpGreater ">=" = __OpGreaterEqual "$" = __OpInstring "$$" = __OpInclude "!" = __OpNot ".NOT." = __OpNot (same as "!") ".AND." = __OpAnd ".OR." = __OpOr ":=" = __OpAssign ... not tested ... "[]" = __OpArrayIndex * * * See COPYING 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 "hbthread.h" #include "hboo.ch" /* DEBUG only*/ /* #include */ typedef struct { PHB_ITEM pInitValue; /* Init Value for data */ USHORT uiType; /* HB_OO_MSG_DATA, HB_OO_MSG_CLASSDATA or HB_OO_MSG_INITIALIZED */ USHORT uiData; /* Item position in instance area or class data */ USHORT uiOffset; /* Supper cast instance area offset for HB_OO_MSG_DATA or real class item position */ USHORT uiSprClass; /* The real class where method were defined */ } INITDATA, * PINITDATA; typedef struct { PHB_DYNS pMessage; /* Method symbolic name */ PHB_DYNS pAccMsg; /* Corresponding access method symbolic name */ PHB_SYMB pFuncSym; /* Function symbol */ PHB_SYMB pRealSym; /* Real function symbol when wrapper is used */ HB_TYPE itemType; /* Type of item in restricted assignment */ USHORT uiSprClass; /* Originalclass'handel (super or current class'handel if not herited). */ /*Added by RAC&JF*/ USHORT uiScope; /* Scoping value */ USHORT uiData; /* Item position for instance data, class data and shared data (Harbour like, begin from 1) or delegated message index object */ USHORT uiOffset; /* position in pInitData for class datas (from 1) or offset to instance area in inherited instance data and supercast messages (from 0) */ USHORT uiPrevCls; USHORT uiPrevMth; #ifndef HB_NO_PROFILER ULONG ulCalls; /* profiler support */ ULONG ulTime; /* profiler support */ ULONG ulRecurse; /* profiler support */ #endif } METHOD, * PMETHOD; #define HB_MSG_POOL typedef struct { char * szName; /* Class name */ PHB_DYNS pClassSym; /* Class symbolic name */ PMETHOD pMethods; /* Class methods */ PHB_SYMB pClassFuncSym; /* Class function symbol */ PHB_SYMB pFriendModule; /* Class friend symbols */ PINITDATA pInitData; /* Class/instance Initialization data */ PHB_ITEM pClassDatas; /* Harbour Array for Class Datas */ PHB_ITEM pSharedDatas; /* Harbour Array for Class Shared Datas */ PHB_ITEM pInlines; /* Array for inline codeblocks */ PHB_ITEM pMutex; /* Class sync method mutex */ PHB_SYMB * pFriendSyms; /* Friend functions' symbols */ ULONG ulOpFlags; /* Flags for overloaded operators */ USHORT uiClass; /* This class handle */ USHORT fHasDestructor; /* has the class destructor message? */ USHORT fHasOnError; /* has the class OnError message? */ USHORT fLocked; /* Class is locked against modifications */ USHORT uiMethods; /* Total Method initialised Counter */ USHORT uiInitDatas; /* Total Method initialised Counter */ USHORT uiDatas; /* Total Data Counter */ USHORT uiDataFirst; /* First instance item from this class */ USHORT uiFriendSyms; /* Number of friend function's symbols */ USHORT uiFriendModule; /* Number of friend symbols in pFriendModule */ USHORT uiMutexOffset; /* Offset in instance area to SYNC method mutex */ USHORT uiHashKey; #ifdef HB_MSG_POOL USHORT * puiMsgIdx; USHORT uiMethodCount; #endif } CLASS, * PCLASS; #define BUCKETBITS 2 #define BUCKETSIZE ( 1 << BUCKETBITS ) #define BUCKETMASK ( BUCKETSIZE - 1 ) #define HASHBITS 3 #define HASH_KEY ( ( 1 << HASHBITS ) - 1 ) #define HASH_KEYMAX ( 1 << ( 16 - BUCKETBITS ) ) #define hb_clsInited(p) ( (p)->pMethods != NULL ) #define hb_clsBucketPos( p, m ) ( ( (p)->uiSymNum & (m) ) << BUCKETBITS ) #ifdef HB_MSG_POOL # define hb_clsMthNum(p) ( ( ULONG ) (p)->uiMethodCount ) #else # define hb_clsMthNum(p) ( ( ( ULONG ) (p)->uiHashKey + 1 ) << BUCKETBITS ) #endif #if defined( HB_REAL_BLOCK_SCOPE ) # undef HB_CLASSY_BLOCK_SCOPE #elif !defined( HB_CLASSY_BLOCK_SCOPE ) # define HB_REAL_BLOCK_SCOPE #endif #if !defined( HB_CLASSY_BLOCK_SCOPE ) # define hb_clsSenderOffset() hb_stackBaseProcOffset( 1 ) #endif static HARBOUR hb___msgGetData( void ); static HARBOUR hb___msgSetData( void ); static HARBOUR hb___msgGetClsData( void ); static HARBOUR hb___msgSetClsData( void ); static HARBOUR hb___msgGetShrData( void ); static HARBOUR hb___msgSetShrData( void ); static HARBOUR hb___msgEvalInline( void ); static HARBOUR hb___msgVirtual( void ); static HARBOUR hb___msgSuper( void ); static HARBOUR hb___msgRealClass( void ); static HARBOUR hb___msgPerform( void ); static HARBOUR hb___msgDelegate( void ); static HARBOUR hb___msgSync( void ); static HARBOUR hb___msgSyncClass( void ); static HARBOUR hb___msgNoMethod( void ); static HARBOUR hb___msgScopeErr( void ); static HARBOUR hb___msgTypeErr( void ); static HARBOUR hb___msgNull( void ); static HARBOUR hb___msgClassH( void ); static HARBOUR hb___msgClassName( void ); static HARBOUR hb___msgClassSel( void ); /* static HARBOUR hb___msgClass( void ); */ /* static HARBOUR hb___msgClassParent( void ); */ /* ================================================ */ /* static variables and structures initialized at HVM startup which * do not need any synchronization mechanism in MT mode, [druzus] */ /* * The positions of items in symbol table below have to correspond * to HB_OO_OP_* constants in hbapicls.h, [druzus] */ static HB_SYMB s_opSymbols[ HB_OO_MAX_OPERATOR + 1 ] = { { "__OPPLUS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 00 */ { "__OPMINUS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 01 */ { "__OPMULT", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 02 */ { "__OPDIVIDE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 03 */ { "__OPMOD", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 04 */ { "__OPPOWER", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 05 */ { "__OPINC", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 06 */ { "__OPDEC", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 07 */ { "__OPEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 08 */ { "__OPEXACTEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 09 */ { "__OPNOTEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 10 */ { "__OPLESS", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 11 */ { "__OPLESSEQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 12 */ { "__OPGREATER", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 13 */ { "__OPGREATEREQUAL", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 14 */ { "__OPASSIGN", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 15 */ { "__OPINSTRING", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 16 */ { "__OPINCLUDE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 17 */ { "__OPNOT", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 18 */ { "__OPAND", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 19 */ { "__OPOR", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 20 */ { "__OPARRAYINDEX", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 21 */ { "__ENUMINDEX", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 22 */ { "__ENUMBASE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 23 */ { "__ENUMVALUE", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 24 */ { "__ENUMSTART", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 25 */ { "__ENUMSKIP", {HB_FS_MESSAGE}, {NULL}, NULL }, /* 26 */ { "__ENUMSTOP", {HB_FS_MESSAGE}, {NULL}, NULL } /* 27 */ }; static HB_SYMB s___msgDestructor = { "__msgDestructor", {HB_FS_MESSAGE}, {NULL}, NULL }; static HB_SYMB s___msgOnError = { "__msgOnError", {HB_FS_MESSAGE}, {NULL}, NULL }; static HB_SYMB s___msgSetData = { "__msgSetData", {HB_FS_MESSAGE}, {hb___msgSetData}, NULL }; static HB_SYMB s___msgGetData = { "__msgGetData", {HB_FS_MESSAGE}, {hb___msgGetData}, NULL }; static HB_SYMB s___msgSetClsData = { "__msgSetClsData", {HB_FS_MESSAGE}, {hb___msgSetClsData}, NULL }; static HB_SYMB s___msgGetClsData = { "__msgGetClsData", {HB_FS_MESSAGE}, {hb___msgGetClsData}, NULL }; static HB_SYMB s___msgSetShrData = { "__msgSetShrData", {HB_FS_MESSAGE}, {hb___msgSetShrData}, NULL }; static HB_SYMB s___msgGetShrData = { "__msgGetShrData", {HB_FS_MESSAGE}, {hb___msgGetShrData}, NULL }; static HB_SYMB s___msgEvalInline = { "__msgEvalInline", {HB_FS_MESSAGE}, {hb___msgEvalInline}, NULL }; static HB_SYMB s___msgVirtual = { "__msgVirtual", {HB_FS_MESSAGE}, {hb___msgVirtual}, NULL }; static HB_SYMB s___msgSuper = { "__msgSuper", {HB_FS_MESSAGE}, {hb___msgSuper}, NULL }; static HB_SYMB s___msgRealClass = { "__msgRealClass", {HB_FS_MESSAGE}, {hb___msgRealClass}, NULL }; static HB_SYMB s___msgPerform = { "__msgPerform", {HB_FS_MESSAGE}, {hb___msgPerform}, NULL }; static HB_SYMB s___msgDelegate = { "__msgDelegate", {HB_FS_MESSAGE}, {hb___msgDelegate}, NULL }; static HB_SYMB s___msgSync = { "__msgSync", {HB_FS_MESSAGE}, {hb___msgSync}, NULL }; static HB_SYMB s___msgSyncClass = { "__msgSyncClass", {HB_FS_MESSAGE}, {hb___msgSyncClass}, NULL }; static HB_SYMB s___msgNoMethod = { "__msgNoMethod", {HB_FS_MESSAGE}, {hb___msgNoMethod}, NULL }; static HB_SYMB s___msgScopeErr = { "__msgScopeErr", {HB_FS_MESSAGE}, {hb___msgScopeErr}, NULL }; static HB_SYMB s___msgTypeErr = { "__msgTypeErr", {HB_FS_MESSAGE}, {hb___msgTypeErr}, NULL }; static HB_SYMB s___msgNew = { "NEW", {HB_FS_MESSAGE}, {NULL}, NULL }; static HB_SYMB s___msgSymbol = { "SYMBOL", {HB_FS_MESSAGE}, {NULL}, NULL }; static HB_SYMB s___msgClassName = { "CLASSNAME", {HB_FS_MESSAGE}, {hb___msgClassName}, NULL }; static HB_SYMB s___msgClassH = { "CLASSH", {HB_FS_MESSAGE}, {hb___msgClassH}, NULL }; static HB_SYMB s___msgClassSel = { "CLASSSEL", {HB_FS_MESSAGE}, {hb___msgClassSel}, NULL }; static HB_SYMB s___msgExec = { "EXEC", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; static HB_SYMB s___msgName = { "NAME", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; /* static HB_SYMB s___msgClsParent = { "ISDERIVEDFROM", {HB_FS_MESSAGE}, {hb___msgClassParent},NULL }; static HB_SYMB s___msgClass = { "CLASS", {HB_FS_MESSAGE}, {hb___msgClass}, NULL }; */ static HB_SYMB s___msgKeys = { "KEYS", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; static HB_SYMB s___msgValues = { "VALUES", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; /* Default enumerator methods (FOR EACH) */ static HB_SYMB s___msgEnumIndex = { "__ENUMINDEX", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; static HB_SYMB s___msgEnumBase = { "__ENUMBASE", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; static HB_SYMB s___msgEnumKey = { "__ENUMKEY", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; static HB_SYMB s___msgEnumValue = { "__ENUMVALUE", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; /* WITH OBJECT base value access/asign methods (:__withobject) */ static HB_SYMB s___msgWithObjectPush = { "__WITHOBJECT", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; static HB_SYMB s___msgWithObjectPop = { "___WITHOBJECT", {HB_FS_MESSAGE}, {hb___msgNull}, NULL }; /* ================================================ */ /* * Scalar classes' handles */ /* If user wants to change scalar classes at runtime in MT mode then * he must resolve thread synchronization problem himself, [druzus] */ static USHORT s_uiArrayClass = 0; static USHORT s_uiBlockClass = 0; static USHORT s_uiCharacterClass = 0; static USHORT s_uiDateClass = 0; static USHORT s_uiTimeStampClass = 0; static USHORT s_uiHashClass = 0; static USHORT s_uiLogicalClass = 0; static USHORT s_uiNilClass = 0; static USHORT s_uiNumericClass = 0; static USHORT s_uiSymbolClass = 0; static USHORT s_uiPointerClass = 0; /* ================================================ */ /* * Class definition holder */ /* In MT mode we are allocating array big enough to hold all * class definitions so we do not have to worry about runtime * s_pClasses reallocation, [druzus] */ #if defined( HB_MT_VM ) # include "hbthread.h" # define HB_CLASS_POOL_SIZE 16384 # define HB_CLASS_LOCK hb_threadEnterCriticalSection( &s_clsMtx ); # define HB_CLASS_UNLOCK hb_threadLeaveCriticalSection( &s_clsMtx ); static HB_CRITICAL_NEW( s_clsMtx ); #else # define HB_CLASS_POOL_SIZE 0 # define HB_CLASS_LOCK # define HB_CLASS_UNLOCK #endif #define HB_CLASS_POOL_RESIZE 16 static PCLASS * s_pClasses = NULL; static USHORT s_uiClsSize = 0; static USHORT s_uiClasses = 0; static PHB_ITEM s_pClassMtx = NULL; /* ================================================ */ #if 0 static USHORT hb_clsBucketPos( PHB_DYNS pMsg, USHORT uiMask ) { /* * we can use PHB_DYNS address as base for hash key. * This value is perfectly unique and we do not need anything more * but it's not continuous so we will have to add dynamic BUCKETSIZE * modification to be 100% sure that we can resolve all symbol name * conflicts (though even without it it's rather theoretical problem). * [druzus] */ /* Safely divide it by 16 - it's minimum memory allocated for single * HB_DYNS structure */ /* return ( ( USHORT ) ( ( HB_PTRDIFF ) pMsg >> 4 ) & uiMask ) << BUCKETBITS; */ /* Using continuous symbol numbers we are 100% sure that we will cover * the whole 16bit area and we will never have any problems until number * of symbols is limited to 2^16. [druzus] */ return ( pMsg->uiSymNum & uiMask ) << BUCKETBITS; } #endif /* * hb_clsDictRealloc( PCLASS ) * * Realloc (widen) class */ static BOOL hb_clsDictRealloc( PCLASS pClass ) { ULONG ulNewHashKey, ulLimit, ul; #ifdef HB_MSG_POOL USHORT * puiMsgIdx; #else PMETHOD pNewMethods; #endif HB_TRACE(HB_TR_DEBUG, ("hb_clsDictRealloc(%p)", pClass)); ulNewHashKey = ( ULONG ) pClass->uiHashKey + 1; ulLimit = ulNewHashKey << BUCKETBITS; do { ulNewHashKey <<= 1; if( ulNewHashKey > HASH_KEYMAX ) hb_errInternal( 6002, "Unable to realloc class message in __clsDictRealloc()", NULL, NULL ); #ifdef HB_MSG_POOL puiMsgIdx = ( USHORT * ) hb_xgrab( ( ulNewHashKey << BUCKETBITS ) * sizeof( USHORT ) ); memset( puiMsgIdx, 0, ( ulNewHashKey << BUCKETBITS ) * sizeof( USHORT ) ); for( ul = 0; ul < ulLimit; ul++ ) { USHORT uiMsg = pClass->puiMsgIdx[ ul ]; if( pClass->puiMsgIdx[ ul ] ) { USHORT uiBucket = BUCKETSIZE; USHORT * puiIdx = puiMsgIdx + hb_clsBucketPos( pClass->pMethods[ uiMsg ].pMessage, ulNewHashKey - 1 ); do { if( * puiIdx == 0 ) /* this message position is empty */ { * puiIdx = uiMsg; break; } ++puiIdx; } while( --uiBucket ); /* Not enough go back to the beginning */ if( ! uiBucket ) { hb_xfree( puiMsgIdx ); break; } } } } while( ul < ulLimit ); pClass->uiHashKey = ( USHORT ) ( ulNewHashKey - 1 ); hb_xfree( pClass->puiMsgIdx ); pClass->puiMsgIdx = puiMsgIdx; #else pNewMethods = ( PMETHOD ) hb_xgrab( ( ulNewHashKey << BUCKETBITS ) * sizeof( METHOD ) ); memset( pNewMethods, 0, ( ulNewHashKey << BUCKETBITS ) * sizeof( METHOD ) ); for( ul = 0; ul < ulLimit; ul++ ) { PHB_DYNS pMessage = ( PHB_DYNS ) pClass->pMethods[ ul ].pMessage; if( pMessage ) { PMETHOD pMethod = pNewMethods + hb_clsBucketPos( pMessage, ulNewHashKey - 1 ); USHORT uiBucket = BUCKETSIZE; do { if( ! pMethod->pMessage ) /* this message position is empty */ { memcpy( pMethod, pClass->pMethods + ul, sizeof( METHOD ) ); break; } ++pMethod; } while( --uiBucket ); /* Not enough go back to the beginning */ if( ! uiBucket ) { hb_xfree( pNewMethods ); break; } } } } while( ul < ulLimit ); pClass->uiHashKey = ( USHORT ) ( ulNewHashKey - 1 ); hb_xfree( pClass->pMethods ); pClass->pMethods = pNewMethods; #endif return TRUE; } static void hb_clsDictInit( PCLASS pClass, USHORT uiHashKey ) { ULONG ulSize; HB_TRACE(HB_TR_DEBUG, ("hb_clsDictInit(%p,%hu)", pClass, uiHashKey)); pClass->uiHashKey = uiHashKey; #ifdef HB_MSG_POOL ulSize = ( ( ( ULONG ) uiHashKey + 1 ) << BUCKETBITS ) * sizeof( USHORT ); pClass->puiMsgIdx = ( USHORT * ) hb_xgrab( ulSize ); memset( pClass->puiMsgIdx, 0, ulSize ); pClass->uiMethodCount = 1; pClass->pMethods = ( PMETHOD ) hb_xgrab( sizeof( METHOD ) ); memset( pClass->pMethods, 0, sizeof( METHOD ) ); #else ulSize = ( ( ( ULONG ) uiHashKey + 1 ) << BUCKETBITS ) * sizeof( METHOD ); pClass->pMethods = ( PMETHOD ) hb_xgrab( ulSize ); memset( pClass->pMethods, 0, ulSize ); #endif } static PMETHOD hb_clsFindMsg( PCLASS pClass, PHB_DYNS pMsg ) { #ifdef HB_MSG_POOL USHORT uiBucket, * puiMsgIdx; HB_TRACE(HB_TR_DEBUG, ("hb_clsFindMsg(%p,%p)", pClass, pMsg)); puiMsgIdx = pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey ); uiBucket = BUCKETSIZE; do { if( pClass->pMethods[ * puiMsgIdx ].pMessage == pMsg ) { return &pClass->pMethods[ * puiMsgIdx ]; } ++puiMsgIdx; } while( --uiBucket ); #else PMETHOD pMethod; USHORT uiBucket; HB_TRACE(HB_TR_DEBUG, ("hb_clsFindMsg(%p,%p)", pClass, pMsg)); pMethod = pClass->pMethods + hb_clsBucketPos( pMsg, pClass->uiHashKey ); uiBucket = BUCKETSIZE; do { if( pMethod->pMessage == pMsg ) return pMethod; ++pMethod; } while( --uiBucket ); #endif return NULL; } static PMETHOD hb_clsAllocMsg( PCLASS pClass, PHB_DYNS pMsg ) { HB_TRACE(HB_TR_DEBUG, ("hb_clsAllocMsg(%p,%p)", pClass, pMsg)); do { #ifdef HB_MSG_POOL USHORT uiBucket = BUCKETSIZE, * puiMsgIdx = pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey ); do { if( * puiMsgIdx == 0 ) { pClass->pMethods = ( PMETHOD ) hb_xrealloc( pClass->pMethods, sizeof( METHOD ) * ( pClass->uiMethodCount + 1 ) ); memset( &pClass->pMethods[ pClass->uiMethodCount ], 0, sizeof( METHOD ) ); * puiMsgIdx = pClass->uiMethodCount++; return &pClass->pMethods[ * puiMsgIdx ]; } else if( pClass->pMethods[ * puiMsgIdx ].pMessage == pMsg ) return &pClass->pMethods[ * puiMsgIdx ]; ++puiMsgIdx; } while( --uiBucket ); #else PMETHOD pMethod = pClass->pMethods + hb_clsBucketPos( pMsg, pClass->uiHashKey ); USHORT uiBucket = BUCKETSIZE; do { if( ! pMethod->pMessage || pMethod->pMessage == pMsg ) return pMethod; ++pMethod; } while( --uiBucket ); #endif } while( hb_clsDictRealloc( pClass ) ); return NULL; } static BOOL hb_clsCanClearMethod( PMETHOD pMethod, BOOL fError ) { HB_SYMBOL_UNUSED( pMethod ); HB_SYMBOL_UNUSED( fError ); #if 0 if( pMethod->pFuncSym == &s___msgSuper ) { if( fError ) hb_errRT_BASE( EG_ARG, 3000, "Cannot delete supercast messages", HB_ERR_FUNCNAME, 0 ); return FALSE; } #endif return TRUE; } static void hb_clsFreeMsg( PCLASS pClass, PHB_DYNS pMsg ) { #ifdef HB_MSG_POOL USHORT uiBucket, * puiMsgIdx; HB_TRACE(HB_TR_DEBUG, ("hb_clsFreeMsg(%p,%p)", pClass, pMsg)); puiMsgIdx = pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey ); uiBucket = BUCKETSIZE; do { if( * puiMsgIdx && pClass->pMethods[ * puiMsgIdx ].pMessage == pMsg ) { if( hb_clsCanClearMethod( &pClass->pMethods[ * puiMsgIdx ], TRUE ) ) { memset( &pClass->pMethods[ * puiMsgIdx ], 0, sizeof( METHOD ) ); * puiMsgIdx = 0; pClass->uiMethods--; /* Decrease number of messages */ } return; } ++puiMsgIdx; } while( --uiBucket ); #else PMETHOD pMethod; USHORT uiBucket; HB_TRACE(HB_TR_DEBUG, ("hb_clsFreeMsg(%p,%p)", pClass, pMsg)); pMethod = pClass->pMethods + hb_clsBucketPos( pMsg, pClass->uiHashKey ); uiBucket = BUCKETSIZE; do { if( pMethod->pMessage == pMsg ) { if( hb_clsCanClearMethod( pMethod, TRUE ) ) { /* Move messages */ while( --uiBucket ) { memcpy( pMethod, pMethod + 1, sizeof( METHOD ) ); pMethod++; } memset( pMethod, 0, sizeof( METHOD ) ); pClass->uiMethods--; /* Decrease number of messages */ } return; } ++pMethod; } while( --uiBucket ); #endif } static BOOL hb_clsHasParent( PCLASS pClass, PHB_DYNS pParentSym ) { PMETHOD pMethod = hb_clsFindMsg( pClass, pParentSym ); return pMethod && pMethod->pFuncSym == &s___msgSuper; } static USHORT hb_clsParentInstanceOffset( PCLASS pClass, PHB_DYNS pParentSym ) { PMETHOD pMethod = hb_clsFindMsg( pClass, pParentSym ); return ( pMethod && pMethod->pFuncSym == &s___msgSuper ) ? pMethod->uiOffset : 0; } static USHORT hb_clsAddInitValue( PCLASS pClass, PHB_ITEM pItem, USHORT uiType, USHORT uiData, USHORT uiOffset, USHORT uiSprClass ) { PINITDATA pInitData; HB_TRACE(HB_TR_DEBUG, ("hb_clsAddInitValue(%p,%p,%hu,%hu,%hu,%hu)", pClass, pItem, uiType, uiData, uiOffset, uiSprClass)); if( ! pItem || HB_IS_NIL( pItem ) ) return 0; if( ! pClass->uiInitDatas ) { pClass->pInitData = ( PINITDATA ) hb_xgrab( sizeof( INITDATA ) ); pInitData = pClass->pInitData + pClass->uiInitDatas++; } else { USHORT ui = pClass->uiInitDatas; pInitData = pClass->pInitData; do { if( pInitData->uiType == uiType && pInitData->uiData + pInitData->uiOffset == uiData + uiOffset ) { hb_itemRelease( pInitData->pInitValue ); break; } ++pInitData; } while( --ui ); if( ui == 0 ) { pClass->pInitData = ( PINITDATA ) hb_xrealloc( pClass->pInitData, ( ULONG ) ( pClass->uiInitDatas + 1 ) * sizeof( INITDATA ) ); pInitData = pClass->pInitData + pClass->uiInitDatas++; } } pInitData->pInitValue = hb_itemClone( pItem ); pInitData->uiType = uiType; pInitData->uiData = uiData; pInitData->uiOffset = uiOffset; pInitData->uiSprClass = uiSprClass; return pClass->uiInitDatas; } static USHORT hb_clsFindRealClassDataOffset( PMETHOD pMethod ) { PMETHOD pRealMth; HB_TRACE(HB_TR_DEBUG, ("hb_clsFindRealClassDataOffset(%p)", pMethod)); pRealMth = hb_clsFindMsg( s_pClasses[ pMethod->uiSprClass ], pMethod->pMessage ); if( pRealMth && pRealMth->uiSprClass == pMethod->uiSprClass && ( pRealMth->pFuncSym == &s___msgSetClsData || pRealMth->pFuncSym == &s___msgGetClsData ) ) { return pRealMth->uiData; } return 0; } static USHORT hb_clsFindClassDataOffset( PCLASS pClass, PMETHOD pNewMethod ) { USHORT uiData; HB_TRACE(HB_TR_DEBUG, ("hb_clsFindClassDataOffset(%p,%p)", pClass, pNewMethod)); uiData = hb_clsFindRealClassDataOffset( pNewMethod ); if( uiData ) { ULONG ulLimit = hb_clsMthNum( pClass ); PMETHOD pMethod = pClass->pMethods; do { if( pMethod->pMessage && pMethod != pNewMethod && pMethod->uiSprClass == pNewMethod->uiSprClass && ( pMethod->pFuncSym == &s___msgSetClsData || pMethod->pFuncSym == &s___msgGetClsData ) && uiData == hb_clsFindRealClassDataOffset( pMethod ) ) { return pMethod->uiData; } ++pMethod; } while( --ulLimit ); } return 0; } static BOOL hb_clsUpdateHiddenMessages( PMETHOD pSrcMethod, PMETHOD pDstMethod, PCLASS pDstClass ) { PMETHOD pNewMethod = pSrcMethod; HB_TRACE(HB_TR_DEBUG, ("hb_clsUpdateHiddenMessages(%p,%p,%p)", pSrcMethod, pDstMethod, pDstClass)); if( ! pDstMethod->pMessage || ( hb_clsCanClearMethod( pDstMethod, FALSE ) && pDstMethod->uiPrevCls != pDstMethod->uiSprClass && ( pDstMethod->uiScope & HB_OO_CLSTP_HIDDEN ) && ( pDstMethod->uiScope & HB_OO_CLSTP_NONVIRTUAL ) ) ) { while( pNewMethod && pNewMethod->uiPrevCls != pNewMethod->uiSprClass && ( pNewMethod->uiScope & HB_OO_CLSTP_HIDDEN ) && ( pNewMethod->uiScope & HB_OO_CLSTP_NONVIRTUAL ) ) { pNewMethod = hb_clsFindMsg( s_pClasses[ pNewMethod->uiPrevCls ], pNewMethod->pMessage ); } if( pNewMethod && pNewMethod != pSrcMethod && !( pNewMethod->uiScope & HB_OO_CLSTP_HIDDEN ) && hb_clsCanClearMethod( pDstMethod, FALSE ) ) { USHORT uiPrevCls = pDstMethod->uiPrevCls, uiPrevMth = pDstMethod->uiPrevMth; memcpy( pDstMethod, pNewMethod, sizeof( METHOD ) ); pDstMethod->uiPrevCls = uiPrevCls; pDstMethod->uiPrevMth = uiPrevMth; pDstMethod->uiScope |= HB_OO_CLSTP_OVERLOADED | HB_OO_CLSTP_SUPER; if( pDstMethod->pFuncSym == &s___msgSetData || pDstMethod->pFuncSym == &s___msgGetData ) { pDstMethod->uiOffset = hb_clsParentInstanceOffset( pDstClass, s_pClasses[ pDstMethod->uiSprClass ]->pClassSym ); } else if( pDstMethod->pFuncSym == &s___msgSetClsData || pDstMethod->pFuncSym == &s___msgGetClsData ) { PCLASS pSrcClass = s_pClasses[ pDstMethod->uiSprClass ]; USHORT uiData; uiData = hb_clsFindClassDataOffset( pDstClass, pDstMethod ); if( uiData == 0 ) { uiData = ( USHORT ) hb_arrayLen( pDstClass->pClassDatas ) + 1; hb_arraySize( pDstClass->pClassDatas, uiData ); } if( pDstMethod->uiOffset ) { pDstMethod->uiOffset = hb_clsAddInitValue( pDstClass, pSrcClass->pInitData[ pDstMethod->uiOffset - 1 ].pInitValue, HB_OO_MSG_CLASSDATA, uiData, 0, pDstMethod->uiSprClass ); } pDstMethod->uiData = uiData; } return TRUE; } } return FALSE; } static void hb_clsCopyClass( PCLASS pClsDst, PCLASS pClsSrc ) { PMETHOD pMethod; ULONG ulLimit; HB_TRACE(HB_TR_DEBUG, ("hb_clsCopyClass(%p,%p)", pClsDst, pClsSrc)); hb_clsDictInit( pClsDst, pClsSrc->uiHashKey ); pClsDst->fHasOnError = pClsSrc->fHasOnError; pClsDst->fHasDestructor = pClsSrc->fHasDestructor; /* CLASS DATA Not Shared ( new array, new value ) */ pClsDst->pClassDatas = hb_arrayClone( pClsSrc->pClassDatas ); /* do not copy shared data array - just simply create new one */ pClsDst->pSharedDatas = hb_itemArrayNew( 0 ); pClsDst->pInlines = hb_arrayClone( pClsSrc->pInlines ); pClsDst->uiDatas = pClsSrc->uiDatas; pClsDst->uiMutexOffset = pClsSrc->uiMutexOffset; pClsDst->ulOpFlags = pClsSrc->ulOpFlags; if( pClsSrc->pMutex ) pClsDst->pMutex = hb_threadMutexCreate( FALSE ); if( pClsSrc->uiInitDatas ) { ULONG ulSize = ( ULONG ) pClsSrc->uiInitDatas * sizeof( INITDATA ); USHORT uiData; pClsDst->uiInitDatas = pClsSrc->uiInitDatas; pClsDst->pInitData = ( PINITDATA ) hb_xgrab( ulSize ); memcpy( pClsDst->pInitData, pClsSrc->pInitData, ulSize ); for( uiData = 0; uiData < pClsDst->uiInitDatas; ++uiData ) { if( pClsDst->pInitData[ uiData ].uiType == HB_OO_MSG_INITIALIZED ) pClsDst->pInitData[ uiData ].uiType = HB_OO_MSG_CLASSDATA; pClsDst->pInitData[ uiData ].pInitValue = hb_itemNew( pClsDst->pInitData[ uiData ].pInitValue ); } } ulLimit = hb_clsMthNum( pClsSrc ); #ifdef HB_MSG_POOL memcpy( pClsDst->puiMsgIdx, pClsSrc->puiMsgIdx, ( ( ( ULONG ) pClsSrc->uiHashKey + 1 ) << BUCKETBITS ) * sizeof( USHORT ) ); pClsDst->uiMethodCount = pClsSrc->uiMethodCount; pClsDst->pMethods = ( PMETHOD ) hb_xrealloc( pClsDst->pMethods, ulLimit * sizeof( METHOD ) ); #endif memcpy( pClsDst->pMethods, pClsSrc->pMethods, ulLimit * sizeof( METHOD ) ); pClsDst->uiMethods = pClsSrc->uiMethods; pMethod = pClsDst->pMethods; do { if( pMethod->pMessage ) { hb_clsUpdateHiddenMessages( pMethod, pMethod, pClsDst ); pMethod->uiScope |= HB_OO_CLSTP_SUPER; } ++pMethod; } while( --ulLimit ); } static BOOL hb_clsIsFriendSymbol( PCLASS pClass, PHB_SYMB pSym ) { USHORT uiCount; HB_TRACE(HB_TR_DEBUG, ("hb_clsIsFriendSymbol(%p,%p)", pClass, pSym)); if( pSym >= pClass->pFriendModule && pSym < pClass->pFriendModule + pClass->uiFriendModule ) return TRUE; for( uiCount = 0; uiCount < pClass->uiFriendSyms; ++uiCount ) { if( pClass->pFriendSyms[ uiCount ] == pSym ) return TRUE; } return FALSE; } static void hb_clsAddFriendSymbol( PCLASS pClass, PHB_SYMB pSym ) { HB_TRACE(HB_TR_DEBUG, ("hb_clsAddFriendSymbol(%p,%p)", pClass, pSym)); if( ! hb_clsIsFriendSymbol( pClass, pSym ) ) { if( pClass->uiFriendSyms == 0 ) { pClass->pFriendSyms = ( PHB_SYMB * ) hb_xgrab( sizeof( PHB_SYMB ) ); pClass->pFriendSyms[ 0 ] = pSym; pClass->uiFriendSyms++; } else { pClass->pFriendSyms = ( PHB_SYMB * ) hb_xrealloc( pClass->pFriendSyms, ( pClass->uiFriendSyms + 1 ) * sizeof( PHB_SYMB ) ); pClass->pFriendSyms[ pClass->uiFriendSyms++ ] = pSym; } } } /* * initialize Classy/OO system at HVM startup */ void hb_clsInit( void ) { PHB_SYMB pOpSym; USHORT uiOperator; HB_TRACE(HB_TR_DEBUG, ("hb_clsInit()")); for( uiOperator = 0, pOpSym = s_opSymbols; uiOperator <= HB_OO_MAX_OPERATOR; ++uiOperator, ++pOpSym ) { pOpSym->pDynSym = hb_dynsymGetCase( pOpSym->szName ); } s___msgDestructor.pDynSym = hb_dynsymGetCase( s___msgDestructor.szName ); s___msgOnError.pDynSym = hb_dynsymGetCase( s___msgOnError.szName ); s___msgClassName.pDynSym = hb_dynsymGetCase( s___msgClassName.szName ); /* Standard messages */ s___msgClassH.pDynSym = hb_dynsymGetCase( s___msgClassH.szName ); /* Not present in classdef. */ s___msgClassSel.pDynSym = hb_dynsymGetCase( s___msgClassSel.szName ); s___msgExec.pDynSym = hb_dynsymGetCase( s___msgExec.szName ); s___msgName.pDynSym = hb_dynsymGetCase( s___msgName.szName ); s___msgNew.pDynSym = hb_dynsymGetCase( s___msgNew.szName ); s___msgSymbol.pDynSym = hb_dynsymGetCase( s___msgSymbol.szName ); s___msgKeys.pDynSym = hb_dynsymGetCase( s___msgKeys.szName ); s___msgValues.pDynSym = hb_dynsymGetCase( s___msgValues.szName ); /* s___msgClsParent.pDynSym = hb_dynsymGetCase( s___msgClsParent.szName ); s___msgClass.pDynSym = hb_dynsymGetCase( s___msgClass.szName ); */ s___msgEnumIndex.pDynSym = hb_dynsymGetCase( s___msgEnumIndex.szName ); s___msgEnumBase.pDynSym = hb_dynsymGetCase( s___msgEnumBase.szName ); s___msgEnumKey.pDynSym = hb_dynsymGetCase( s___msgEnumKey.szName ); s___msgEnumValue.pDynSym = hb_dynsymGetCase( s___msgEnumValue.szName ); s___msgWithObjectPush.pDynSym = hb_dynsymGetCase( s___msgWithObjectPush.szName ); s___msgWithObjectPop.pDynSym = hb_dynsymGetCase( s___msgWithObjectPop.szName ); s_uiClsSize = HB_CLASS_POOL_SIZE; s_uiClasses = 0; s_pClasses = ( PCLASS * ) hb_xgrab( sizeof( PCLASS ) * ( ( ULONG ) s_uiClsSize + 1 ) ); s_pClasses[ 0 ] = NULL; #if defined( HB_MT_VM ) s_pClassMtx = hb_threadMutexCreate( FALSE ); #endif } /* * initialize Classy/OO system .prg functions */ void hb_clsDoInit( void ) { static const char * s_pszFuncNames[] = { "HBARRAY", "HBBLOCK", "HBCHARACTER", "HBDATE", "HBTIMESTAMP", "HBHASH", "HBLOGICAL", "HBNIL", "HBNUMERIC", "HBSYMBOL", "HBPOINTER" }; static USHORT * s_puiHandles[] = { &s_uiArrayClass, &s_uiBlockClass, &s_uiCharacterClass, &s_uiDateClass, &s_uiTimeStampClass, &s_uiHashClass, &s_uiLogicalClass, &s_uiNilClass, &s_uiNumericClass, &s_uiSymbolClass, &s_uiPointerClass }; HB_STACK_TLS_PRELOAD int i; HB_TRACE(HB_TR_DEBUG, ("hb_clsDoInit()")); for( i = 0; i < ( int ) ( sizeof( s_puiHandles ) / sizeof( USHORT * ) ); ++i ) { PHB_DYNS pFuncSym = hb_dynsymFindName( s_pszFuncNames[i] ); if( pFuncSym && hb_dynsymIsFunction( pFuncSym ) ) { PHB_ITEM pReturn = hb_stackReturnItem(); hb_itemSetNil( pReturn ); hb_vmPushDynSym( pFuncSym ); hb_vmPushNil(); hb_vmProc( 0 ); if( HB_IS_OBJECT( pReturn ) ) *( s_puiHandles[i] ) = pReturn->item.asArray.value->uiClass; } } } /* * hb_clsRelease( ) * * Release a class from memory */ static void hb_clsRelease( PCLASS pClass ) { HB_TRACE(HB_TR_DEBUG, ("hb_clsRelease(%p)", pClass)); if( pClass->uiInitDatas ) { USHORT ui = pClass->uiInitDatas; PINITDATA pInitData = pClass->pInitData; do { hb_itemRelease( pInitData->pInitValue ); ++pInitData; } while( --ui ); hb_xfree( pClass->pInitData ); } if( pClass->szName ) hb_xfree( pClass->szName ); if( pClass->pMethods ) hb_xfree( pClass->pMethods ); if( pClass->uiFriendSyms ) hb_xfree( pClass->pFriendSyms ); #ifdef HB_MSG_POOL if( pClass->puiMsgIdx ) hb_xfree( pClass->puiMsgIdx ); #endif if( pClass->pClassDatas ) hb_itemRelease( pClass->pClassDatas ); if( pClass->pSharedDatas ) hb_itemRelease( pClass->pSharedDatas ); if( pClass->pInlines ) hb_itemRelease( pClass->pInlines ); hb_xfree( pClass ); } /* * hb_clsReleaseAll() * * Release all classes */ void hb_clsReleaseAll( void ) { HB_TRACE(HB_TR_DEBUG, ("hb_clsReleaseAll()")); if( s_uiClasses ) { USHORT uiClass = s_uiClasses; /* It blocks destructor execution - don't move. [druzus] */ s_uiClasses = 0; do { hb_clsRelease( s_pClasses[ uiClass ] ); } while( --uiClass ); } if( s_pClasses ) { hb_xfree( s_pClasses ); s_pClasses = NULL; s_uiClsSize = 0; } if( s_pClassMtx ) { hb_itemRelease( s_pClassMtx ); s_pClassMtx = NULL; } } /* Mark all internal data as used so it will not be released by the * garbage collector */ void hb_clsIsClassRef( void ) { /* * All internal items are allocated with hb_itemNew() * GC knows them and scan itself so it's not necessary * to repeat scanning here [druzus]. */ #if 0 USHORT uiClass = s_uiClasses; HB_TRACE(HB_TR_DEBUG, ("hb_clsIsClassRef()")); while( uiClass ) { PCLASS pClass = s_pClasses[ uiClass-- ]; if( pClass->pInlines ) hb_gcItemRef( pClass->pInlines ); if( pClass->pClassDatas ) hb_gcItemRef( pClass->pClassDatas ); if( pClass->pSharedDatas ) hb_gcItemRef( pClass->pSharedDatas ); if( pClass->uiInitDatas ) { USHORT ui = pClass->uiInitDatas; PINITDATA pInitData = pClass->pInitData; do { if( HB_IS_GCITEM( pInitData->pInitValue ) ) hb_gcItemRef( pInitData->pInitValue ); ++pInitData; } while( --ui ); } } #endif } BOOL hb_clsIsParent( USHORT uiClass, const char * szParentName ) { if( uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; if( strcmp( pClass->szName, szParentName ) == 0 ) return TRUE; else { PHB_DYNS pMsg = hb_dynsymFindName( szParentName ); if( pMsg ) return hb_clsHasParent( pClass, pMsg ); } } return FALSE; } USHORT hb_objGetClass( PHB_ITEM pItem ) { if( pItem && HB_IS_ARRAY( pItem ) ) return pItem->item.asArray.value->uiClass; else return 0; } /* get object class handle using class name and class function name */ USHORT hb_objSetClass( PHB_ITEM pItem, const char * szClass, const char * szFunc ) { USHORT uiClass = 0; if( pItem && HB_IS_ARRAY( pItem ) && pItem->item.asArray.value->uiClass == 0 ) { uiClass = pItem->item.asArray.value->uiClass = hb_clsFindClass( szClass, szFunc ); } return uiClass; } /* ================================================ */ /* * Get the class handle */ static USHORT hb_objGetClassH( PHB_ITEM pObject ) { HB_TRACE(HB_TR_DEBUG, ("hb_objGetClassH(%p)", pObject)); if( HB_IS_ARRAY( pObject ) ) { if( pObject->item.asArray.value->uiClass != 0 ) return pObject->item.asArray.value->uiClass; else return s_uiArrayClass; } /* built in types */ else if( HB_IS_NIL( pObject ) ) return s_uiNilClass; else if( HB_IS_STRING( pObject ) ) return s_uiCharacterClass; else if( HB_IS_NUMERIC( pObject ) ) return s_uiNumericClass; else if( HB_IS_DATE( pObject ) ) return s_uiDateClass; else if( HB_IS_TIMESTAMP( pObject ) ) return s_uiTimeStampClass; else if( HB_IS_LOGICAL( pObject ) ) return s_uiLogicalClass; else if( HB_IS_BLOCK( pObject ) ) return s_uiBlockClass; else if( HB_IS_HASH( pObject ) ) return s_uiHashClass; else if( HB_IS_POINTER( pObject ) ) return s_uiPointerClass; else if( HB_IS_SYMBOL( pObject ) ) return s_uiSymbolClass; return 0; } /* * Get the class name of an object */ const char * hb_objGetClsName( PHB_ITEM pObject ) { HB_TRACE(HB_TR_DEBUG, ("hb_objGetClsName(%p)", pObject)); if( HB_IS_ARRAY( pObject ) ) { if( pObject->item.asArray.value->uiClass != 0 ) return s_pClasses[ pObject->item.asArray.value->uiClass ]->szName; else return "ARRAY"; } /* built in types */ else if( HB_IS_NIL( pObject ) ) return "NIL"; else if( HB_IS_STRING( pObject ) ) return "CHARACTER"; else if( HB_IS_NUMERIC( pObject ) ) return "NUMERIC"; else if( HB_IS_DATE( pObject ) ) return "DATE"; else if( HB_IS_TIMESTAMP( pObject ) ) return "TIMESTAMP"; else if( HB_IS_LOGICAL( pObject ) ) return "LOGICAL"; else if( HB_IS_BLOCK( pObject ) ) return "BLOCK"; else if( HB_IS_HASH( pObject ) ) return "HASH"; else if( HB_IS_POINTER( pObject ) ) return "POINTER"; else if( HB_IS_SYMBOL( pObject ) ) return "SYMBOL"; else return "UNKNOWN"; } const char * hb_clsName( USHORT uiClass ) { if( uiClass && uiClass <= s_uiClasses ) return s_pClasses[ uiClass ]->szName; else return NULL; } const char * hb_clsFuncName( USHORT uiClass ) { if( uiClass && uiClass <= s_uiClasses ) return s_pClasses[ uiClass ]->pClassFuncSym ? s_pClasses[ uiClass ]->pClassFuncSym->szName : ""; else return NULL; } const char * hb_clsMethodName( USHORT uiClass, USHORT uiMethod ) { if( uiClass && uiClass <= s_uiClasses && ( UINT ) uiMethod < ( UINT ) hb_clsMthNum( s_pClasses[ uiClass ] ) ) { PMETHOD pMethod = s_pClasses[ uiClass ]->pMethods + uiMethod; if( pMethod->pMessage ) return pMethod->pMessage->pSymbol->szName; } return NULL; } USHORT hb_clsFindClass( const char * szClass, const char * szFunc ) { USHORT uiClass; for( uiClass = 1; uiClass <= s_uiClasses; uiClass++ ) { if( strcmp( szClass, s_pClasses[ uiClass ]->szName ) == 0 && ( !szFunc || ( !s_pClasses[ uiClass ]->pClassFuncSym ? !*szFunc : strcmp( szFunc, s_pClasses[ uiClass ]->pClassFuncSym->szName ) == 0 ) ) ) { return uiClass; } } return 0; } static USHORT hb_clsFindClassByFunc( PHB_SYMB pClassFuncSym ) { USHORT uiClass; for( uiClass = 1; uiClass <= s_uiClasses; uiClass++ ) { if( s_pClasses[ uiClass ]->pClassFuncSym == pClassFuncSym ) { return uiClass; } } return 0; } /* * Get the real method symbol for given stack symbol */ PHB_SYMB hb_clsMethodSym( PHB_ITEM pBaseSymbol ) { PHB_STACK_STATE pStack = pBaseSymbol->item.asSymbol.stackstate; if( pStack->uiClass ) { PMETHOD pMethod = s_pClasses[ pStack->uiClass ]->pMethods + pStack->uiMethod; if( pMethod->pFuncSym == &s___msgEvalInline ) return hb_arrayGetItemPtr( s_pClasses[ pMethod->uiSprClass ]->pInlines, pMethod->uiData )->item.asBlock.value->pDefSymb; /* else if( pMethod->pFuncSym == &s___msgPerform ) */ else if( pMethod->pFuncSym == &s___msgDelegate ) return s_pClasses[ pStack->uiClass ]->pMethods[ pMethod->uiData ].pFuncSym; else return pMethod->pFuncSym; } return pBaseSymbol->item.asSymbol.value; } /* * Get the real class name of an object message * Will return the class name from wich the message is inherited in case * of inheritance. */ const char * hb_objGetRealClsName( PHB_ITEM pObject, const char * szName ) { USHORT uiClass; HB_TRACE(HB_TR_DEBUG, ("hb_objGetrealClsName(%p,%s)", pObject, szName)); uiClass = hb_objGetClassH( pObject ); if( uiClass && uiClass <= uiClass ) { PHB_DYNS pMsg = hb_dynsymFindName( szName ); if( pMsg ) { PMETHOD pMethod = hb_clsFindMsg( s_pClasses[ uiClass ], pMsg ); if( pMethod ) uiClass = pMethod->uiSprClass; } if( uiClass && uiClass <= s_uiClasses ) return s_pClasses[ uiClass ]->szName; } return hb_objGetClsName( pObject ); } #if defined( HB_CLASSY_BLOCK_SCOPE ) static LONG hb_clsSenderOffset( void ) { LONG lOffset = hb_stackBaseProcOffset( 1 ); if( lOffset > 0 ) { /* Is it inline method? */ if( lOffset > 0 && HB_IS_BLOCK( hb_stackItem( lOffset + 1 ) ) && ( hb_stackItem( lOffset )->item.asSymbol.value == &hb_symEval || hb_stackItem( lOffset )->item.asSymbol.value->pDynSym == hb_symEval.pDynSym ) ) { lOffset = hb_stackItem( lOffset )->item.asSymbol.stackstate->lBaseItem; /* I do not like it but Class(y) makes sth like that. [druzus] */ while( lOffset > 0 && hb_stackItem( lOffset )->item.asSymbol.stackstate->uiClass == 0 ) lOffset = hb_stackItem( lOffset )->item.asSymbol.stackstate->lBaseItem; } return lOffset; } return -1; } #endif #if 0 static USHORT hb_clsSenderClasss( void ) { LONG lOffset = hb_clsSenderOffset(); if( lOffset > 0 ) return hb_stackItem( lOffset )->item.asSymbol.stackstate->uiClass; else return 0; } #endif static USHORT hb_clsSenderMethodClasss( void ) { LONG lOffset = hb_clsSenderOffset(); if( lOffset > 0 ) { HB_STACK_TLS_PRELOAD PHB_STACK_STATE pStack = hb_stackItem( lOffset )->item.asSymbol.stackstate; if( pStack->uiClass ) return ( s_pClasses[ pStack->uiClass ]->pMethods + pStack->uiMethod )->uiSprClass; } return 0; } static PHB_SYMB hb_clsSenderSymbol( void ) { PHB_SYMB pSym = NULL; LONG lOffset = hb_clsSenderOffset(); if( lOffset > 0 ) { HB_STACK_TLS_PRELOAD pSym = hb_stackItem( lOffset )->item.asSymbol.value; if( pSym == &hb_symEval || pSym->pDynSym == hb_symEval.pDynSym ) { PHB_ITEM pBlock = hb_stackItem( lOffset + 1 ); if( HB_IS_BLOCK( pBlock ) ) pSym = pBlock->item.asBlock.value->pDefSymb; } } return hb_vmGetRealFuncSym( pSym ); } static USHORT hb_clsSenderObjectClasss( void ) { LONG lOffset = hb_clsSenderOffset(); if( lOffset > 0 ) { HB_STACK_TLS_PRELOAD PHB_ITEM pSender = hb_stackItem( lOffset + 1 ); if( HB_IS_ARRAY( pSender ) ) return pSender->item.asArray.value->uiClass; } return 0; } static PHB_SYMB hb_clsValidScope( PMETHOD pMethod, PHB_STACK_STATE pStack ) { if( pMethod->uiScope & ( HB_OO_CLSTP_HIDDEN | HB_OO_CLSTP_PROTECTED | HB_OO_CLSTP_OVERLOADED ) ) { USHORT uiSenderClass = hb_clsSenderMethodClasss(); if( uiSenderClass ) { if( uiSenderClass == pMethod->uiSprClass ) return pMethod->pFuncSym; /* * Warning!!! Friends cannot access overloaded non virtual methods. * This feature is available _ONLY_ for real class members, [druzus] */ if( pMethod->uiScope & HB_OO_CLSTP_OVERLOADED ) { PCLASS pClass = s_pClasses[ uiSenderClass ]; PMETHOD pHiddenMthd = hb_clsFindMsg( pClass, pMethod->pMessage ); if( pHiddenMthd && ( pHiddenMthd->uiScope & HB_OO_CLSTP_NONVIRTUAL ) && pHiddenMthd->uiSprClass == uiSenderClass ) { pStack->uiClass = uiSenderClass; pStack->uiMethod = ( USHORT ) ( pHiddenMthd - pClass->pMethods ); return pHiddenMthd->pFuncSym; } } if( pMethod->uiScope & HB_OO_CLSTP_HIDDEN ) { if( ! hb_clsIsFriendSymbol( s_pClasses[ pMethod->uiSprClass ], s_pClasses[ uiSenderClass ]->pClassFuncSym ) ) return &s___msgScopeErr; } else if( pMethod->uiScope & HB_OO_CLSTP_PROTECTED && ! hb_clsHasParent( s_pClasses[ pStack->uiClass ], s_pClasses[ uiSenderClass ]->pClassSym ) && ! hb_clsHasParent( s_pClasses[ uiSenderClass ], s_pClasses[ pStack->uiClass ]->pClassSym ) && ! hb_clsIsFriendSymbol( s_pClasses[ pMethod->uiSprClass ], s_pClasses[ uiSenderClass ]->pClassFuncSym ) && ( pStack->uiClass == pMethod->uiSprClass || ! hb_clsIsFriendSymbol( s_pClasses[ pStack->uiClass ], s_pClasses[ uiSenderClass ]->pClassFuncSym ) ) ) return &s___msgScopeErr; } else if( pMethod->uiScope & ( HB_OO_CLSTP_HIDDEN | HB_OO_CLSTP_PROTECTED ) ) { PHB_SYMB pSym = hb_clsSenderSymbol(); if( ! hb_clsIsFriendSymbol( s_pClasses[ pMethod->uiSprClass ], pSym ) ) { if( ( pMethod->uiScope & HB_OO_CLSTP_HIDDEN ) || ! hb_clsIsFriendSymbol( s_pClasses[ pStack->uiClass ], pSym ) ) return &s___msgScopeErr; } } } return pMethod->pFuncSym; } static PHB_SYMB hb_clsScalarMethod( PCLASS pClass, PHB_DYNS pMsg, PHB_STACK_STATE pStack ) { PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg ); if( pStack ) { pStack->uiClass = pClass->uiClass; if( pMethod ) { pStack->uiMethod = ( USHORT ) ( pMethod - pClass->pMethods ); return hb_clsValidScope( pMethod, pStack ); } } else if( pMethod ) return pMethod->pFuncSym; return NULL; } static void hb_clsMakeSuperObject( PHB_ITEM pDest, PHB_ITEM pObject, USHORT uiSuperClass ) { HB_TRACE(HB_TR_DEBUG, ("hb_clsMakeSuperObject(%p, %p, %hu)", pDest, pObject, uiSuperClass)); /* create a fake object array */ hb_arrayNew( pDest, 1 ); /* Now save the Self object as the 1st elem. */ hb_arraySet( pDest, 1, pObject ); /* And transform it into a fake object */ /* backup of actual handel */ pDest->item.asArray.value->uiPrevCls = hb_objGetClassH( pObject ); /* superclass handel casting */ pDest->item.asArray.value->uiClass = uiSuperClass; } /* * = hb_objGetMethod( , , ) * * Internal function to the function pointer of a message of an object */ PHB_SYMB hb_objGetMethod( PHB_ITEM pObject, PHB_SYMB pMessage, PHB_STACK_STATE pStack ) { HB_STACK_TLS_PRELOAD PCLASS pClass = NULL; PHB_DYNS pMsg; HB_TRACE(HB_TR_DEBUG, ("hb_objGetMethod(%p, %p, %p)", pObject, pMessage, pStack)); pMsg = pMessage->pDynSym; if( HB_IS_ARRAY( pObject ) ) { if( pObject->item.asArray.value->uiClass ) { pClass = s_pClasses[ pObject->item.asArray.value->uiClass ]; if( pStack ) { pStack->uiClass = pObject->item.asArray.value->uiClass; if( pObject->item.asArray.value->uiPrevCls ) { if( pObject->item.asArray.value->ulLen ) { /* * Copy real object - do not move! the same super casted * object can be used more then once and we mustn't * destroy it. We can safely use hb_stackReturnItem() here. */ hb_itemCopy( hb_stackReturnItem(), pObject->item.asArray.value->pItems ); /* move real object back to the stack */ hb_itemMove( pObject, hb_stackReturnItem() ); } else /* Someone tried to manipulate with supercast array */ hb_itemClear( pObject ); } #ifdef HB_MSG_POOL { USHORT uiBucket = BUCKETSIZE, * puiMsgIdx = pClass->puiMsgIdx + hb_clsBucketPos( pMsg, pClass->uiHashKey ); do { PMETHOD pMethod = &pClass->pMethods[ * puiMsgIdx ]; if( pMethod->pMessage == pMsg ) { pStack->uiMethod = * puiMsgIdx; return hb_clsValidScope( pMethod, pStack ); } ++puiMsgIdx; } while( --uiBucket ); } #else { PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg ); if( pMethod ) { pStack->uiMethod = ( USHORT ) ( pMethod - pClass->pMethods ); return hb_clsValidScope( pMethod, pStack ); } } #endif } else { PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg ); if( pMethod ) return pMethod->pFuncSym; } } else if( s_uiArrayClass ) { pClass = s_pClasses[ s_uiArrayClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_BLOCK( pObject ) ) { if( pMsg == hb_symEval.pDynSym ) return &hb_symEval; else if( s_uiBlockClass ) { pClass = s_pClasses[ s_uiBlockClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_BYREF( pObject ) ) { if( pStack ) { /* method of enumerator variable from FOR EACH statement */ PHB_ITEM pEnum = hb_itemUnRefOnce( pObject ); if( HB_IS_ENUM( pEnum ) ) { /* * Do actions here - we already have unreferenced pEnum so * it will be a little bit faster but in the future it's * possible that I'll move it to separate function when * I'll add enumerators overloading. [druzus] */ if( pMsg == s___msgEnumIndex.pDynSym ) { hb_itemPutNL( hb_stackReturnItem(), pEnum->item.asEnum.offset ); if( hb_pcount() > 0 && HB_ISNUM( 1 ) ) pEnum->item.asEnum.offset = hb_itemGetNL( hb_param( 1, HB_IT_ANY ) ); return &s___msgEnumIndex; } else if( pMsg == s___msgEnumKey.pDynSym ) { PHB_ITEM pBase = HB_IS_BYREF( pEnum->item.asEnum.basePtr ) ? hb_itemUnRef( pEnum->item.asEnum.basePtr ) : pEnum->item.asEnum.basePtr; if( HB_IS_HASH( pBase ) ) { pBase = hb_hashGetKeyAt( pBase, pEnum->item.asEnum.offset ); if( pBase ) hb_itemCopy( hb_stackReturnItem(), pBase ); } return &s___msgEnumKey; } else if( pMsg == s___msgEnumBase.pDynSym ) { if( HB_IS_BYREF( pEnum->item.asEnum.basePtr ) ) hb_itemCopy( hb_stackReturnItem(), hb_itemUnRef( pEnum->item.asEnum.basePtr ) ); else hb_itemCopy( hb_stackReturnItem(), pEnum->item.asEnum.basePtr ); if( hb_pcount() > 0 ) hb_itemCopy( pEnum->item.asEnum.basePtr, hb_itemUnRef( hb_stackItemFromBase( 1 ) ) ); return &s___msgEnumBase; } else if( pMsg == s___msgEnumValue.pDynSym ) { pEnum = hb_itemUnRef( pEnum ); hb_itemCopy( hb_stackReturnItem(), pEnum ); if( hb_pcount() > 0 ) hb_itemCopy( pEnum, hb_itemUnRef( hb_stackItemFromBase( 1 ) ) ); return &s___msgEnumValue; } } } } else if( HB_IS_SYMBOL( pObject ) ) { if( s_uiSymbolClass ) { pClass = s_pClasses[ s_uiSymbolClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } if( pMsg == s___msgExec.pDynSym || pMsg == hb_symEval.pDynSym ) { if( ! pObject->item.asSymbol.value->value.pFunPtr && pObject->item.asSymbol.value->pDynSym ) return pObject->item.asSymbol.value->pDynSym->pSymbol; else return pObject->item.asSymbol.value; } else if( pMsg == s___msgName.pDynSym ) { hb_itemPutC( hb_stackReturnItem(), pObject->item.asSymbol.value->szName ); return &s___msgName; } } else if( HB_IS_HASH( pObject ) ) { if( s_uiHashClass ) { pClass = s_pClasses[ s_uiHashClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } if( pMsg == s___msgKeys.pDynSym ) { hb_itemReturnRelease( hb_hashGetKeys( pObject ) ); return &s___msgKeys; } else if( pMsg == s___msgValues.pDynSym ) { hb_itemReturnRelease( hb_hashGetValues( pObject ) ); return &s___msgValues; } #if defined( HB_HASH_MSG_ITEMS ) else { if( hb_pcount() == 1 && pMessage->szName[ 0 ] == '_' ) { /* ASSIGN */ PHB_ITEM pIndex = hb_itemPutCConst( hb_stackAllocItem(), pMessage->szName + 1 ); PHB_ITEM pDest = hb_hashGetItemPtr( pObject, pIndex, HB_HASH_AUTOADD_ASSIGN ); hb_stackPop(); if( pDest ) { PHB_ITEM pValue = hb_param( 1, HB_IT_ANY ); hb_itemCopyFromRef( pDest, pValue ); hb_itemReturn( pValue ); return &s___msgVirtual; } } else if( hb_pcount() == 0 ) { /* ACCESS */ PHB_ITEM pIndex = hb_itemPutCConst( hb_stackAllocItem(), pMessage->szName ); PHB_ITEM pValue = hb_hashGetItemPtr( pObject, pIndex, HB_HASH_AUTOADD_ACCESS ); hb_stackPop(); if( pValue ) { hb_itemReturn( pValue ); return &s___msgVirtual; } } } #endif } else if( HB_IS_STRING( pObject ) ) { if( s_uiCharacterClass ) { pClass = s_pClasses[ s_uiCharacterClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_DATE( pObject ) ) { if( s_uiDateClass ) { pClass = s_pClasses[ s_uiDateClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_TIMESTAMP( pObject ) ) { if( s_uiTimeStampClass ) { pClass = s_pClasses[ s_uiTimeStampClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_NUMERIC( pObject ) ) { if( s_uiNumericClass ) { pClass = s_pClasses[ s_uiNumericClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_LOGICAL( pObject ) ) { if( s_uiLogicalClass ) { pClass = s_pClasses[ s_uiLogicalClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_POINTER( pObject ) ) { if( s_uiPointerClass ) { pClass = s_pClasses[ s_uiPointerClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } else if( HB_IS_NIL( pObject ) ) { if( s_uiNilClass ) { pClass = s_pClasses[ s_uiNilClass ]; { PHB_SYMB pExecSym = hb_clsScalarMethod( pClass, pMsg, pStack ); if( pExecSym ) return pExecSym; } } } /* Default messages here */ if( pMsg == s___msgWithObjectPush.pDynSym ) { if( pStack ) { PHB_ITEM pItem = hb_stackWithObjectItem(); if( pItem ) { /* push current WITH OBJECT object */ hb_itemCopy( hb_stackReturnItem(), pItem ); return &s___msgWithObjectPush; } } } else if( pMsg == s___msgWithObjectPop.pDynSym ) { if( pStack ) { PHB_ITEM pItem = hb_stackWithObjectItem(); if( pItem ) { /* replace current WITH OBJECT object */ hb_itemCopy( pItem, hb_stackItemFromBase( 1 ) ); hb_itemCopy( hb_stackReturnItem(), pItem ); return &s___msgWithObjectPop; } } } else if( pMsg == s___msgClassName.pDynSym ) return &s___msgClassName; else if( pMsg == s___msgClassH.pDynSym ) return &s___msgClassH; else if( pMsg == s___msgClassSel.pDynSym ) return &s___msgClassSel; /* else if( pMsg == s___msgClsParent.pDynSym ) return &s___msgClsParent; else if( pMsg == s___msgClass.pDynSym ) return &s___msgClass; */ if( pStack ) { if( pClass && pClass->fHasOnError ) { PMETHOD pMethod = hb_clsFindMsg( pClass, s___msgOnError.pDynSym ); if( pMethod ) { pStack->uiMethod = ( USHORT ) ( pMethod - pClass->pMethods ); return pMethod->pFuncSym; } } /* remove this line if you want default HVM error message */ return &s___msgNoMethod; } return NULL; } BOOL hb_objGetVarRef( PHB_ITEM pObject, PHB_SYMB pMessage, PHB_STACK_STATE pStack ) { PHB_SYMB pExecSym; #if defined( HB_HASH_MSG_ITEMS ) if( HB_IS_HASH( pObject ) ) { HB_STACK_TLS_PRELOAD PHB_ITEM pIndex = hb_itemPutCConst( hb_stackAllocItem(), pMessage->szName + 1 ); PHB_ITEM pValue = hb_hashGetItemRefPtr( pObject, pIndex ); hb_stackPop(); if( pValue ) hb_itemReturn( pValue ); return pValue != NULL; } #endif pExecSym = hb_objGetMethod( pObject, pMessage, pStack ); if( pExecSym ) { HB_STACK_TLS_PRELOAD if( pExecSym->value.pFunPtr == hb___msgSetData ) { USHORT uiObjClass = pObject->item.asArray.value->uiClass; PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; ULONG ulIndex = pMethod->uiData; if( pStack->uiClass != uiObjClass ) ulIndex += hb_clsParentInstanceOffset( s_pClasses[ uiObjClass ], s_pClasses[ pMethod->uiSprClass ]->pClassSym ); else ulIndex += pMethod->uiOffset; /* will arise only if the class has been modified after first instance */ if( ulIndex > hb_arrayLen( pObject ) ) /* Resize needed */ hb_arraySize( pObject, ulIndex ); /* Make large enough */ return hb_arrayGetItemRef( pObject, ulIndex, hb_stackReturnItem() ); } else if( pExecSym->value.pFunPtr == hb___msgSetClsData ) { PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; return hb_arrayGetItemRef( pClass->pClassDatas, pMethod->uiData, hb_stackReturnItem() ); } else if( pExecSym->value.pFunPtr == hb___msgSetShrData ) { PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; return hb_arrayGetItemRef( s_pClasses[ pMethod->uiSprClass ]->pSharedDatas, pMethod->uiData, hb_stackReturnItem() ); } else if( pExecSym->value.pFunPtr == hb___msgScopeErr ) { pExecSym->value.pFunPtr(); } else { PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; if( !pMethod->pAccMsg ) pMethod->pAccMsg = hb_dynsymGetCase( pMessage->szName + 1 ); return hb_vmMsgReference( pObject, pMessage->pDynSym, pMethod->pAccMsg ); } } return FALSE; } /* * Check if class has object destructors */ BOOL hb_clsHasDestructor( USHORT uiClass ) { if( uiClass && uiClass <= s_uiClasses ) return s_pClasses[ uiClass ]->fHasDestructor; else return FALSE; } /* * Call all known supper destructors */ static void hb_objSupperDestructorCall( PHB_ITEM pObject, PCLASS pClass ) { HB_STACK_TLS_PRELOAD PMETHOD pMethod = pClass->pMethods; ULONG ulLimit = hb_clsMthNum( pClass ); BYTE * pbClasses; USHORT uiClass; pbClasses = ( BYTE * ) hb_xgrab( s_uiClasses + 1 ); memset( pbClasses, 0, s_uiClasses + 1 ); do { if( pMethod->pMessage ) { if( pMethod->pFuncSym == &s___msgSuper ) { PCLASS pSupperClass = s_pClasses[ pMethod->uiSprClass ]; if( pSupperClass->fHasDestructor && pSupperClass != pClass ) pbClasses[ pMethod->uiSprClass ] |= 1; } else if( pMethod->pMessage == s___msgDestructor.pDynSym ) pbClasses[ pMethod->uiSprClass ] |= 2; } ++pMethod; } while( --ulLimit ); for( uiClass = s_uiClasses; uiClass; --uiClass ) { if( pbClasses[ uiClass ] == 1 ) { PMETHOD pDestructor = hb_clsFindMsg( s_pClasses[ uiClass ], s___msgDestructor.pDynSym ); if( pDestructor ) { if( pbClasses[ pDestructor->uiSprClass ] == 1 ) { hb_vmPushSymbol( &s___msgDestructor ); hb_clsMakeSuperObject( hb_stackAllocItem(), pObject, uiClass ); hb_vmSend( 0 ); if( hb_vmRequestQuery() != 0 ) break; pbClasses[ pDestructor->uiSprClass ] |= 2; } } } } hb_xfree( pbClasses ); } /* * Call object destructor */ void hb_objDestructorCall( PHB_ITEM pObject ) { if( HB_IS_OBJECT( pObject ) && pObject->item.asArray.value->uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ pObject->item.asArray.value->uiClass ]; if( pClass->fHasDestructor ) { if( hb_vmRequestReenter() ) { hb_vmPushSymbol( &s___msgDestructor ); hb_vmPush( pObject ); hb_vmSend( 0 ); if( hb_vmRequestQuery() == 0 ) hb_objSupperDestructorCall( pObject, pClass ); hb_vmRequestRestore(); } } } } /* * Check if object has a given operator */ BOOL hb_objHasOperator( PHB_ITEM pObject, USHORT uiOperator ) { USHORT uiClass; HB_TRACE(HB_TR_DEBUG, ("hb_objHasOperator(%p,%hu)", pObject, uiOperator)); uiClass = hb_objGetClassH( pObject ); if( uiClass && uiClass <= s_uiClasses ) { return ( s_pClasses[ uiClass ]->ulOpFlags & ( 1UL << uiOperator ) ) != 0; } return FALSE; } /* * Call object operator. If pMsgArg is NULL then operator is unary. * Function return TRUE when object class overloads given operator * and FALSE otherwise. [druzus] */ BOOL hb_objOperatorCall( USHORT uiOperator, HB_ITEM_PTR pResult, PHB_ITEM pObject, PHB_ITEM pMsgArg1, PHB_ITEM pMsgArg2 ) { HB_TRACE(HB_TR_DEBUG, ("hb_objOperatorCall(%hu,%p,%p,%p,%p)", uiOperator, pResult, pObject, pMsgArg1, pMsgArg2)); if( hb_objHasOperator( pObject, uiOperator ) ) { HB_STACK_TLS_PRELOAD hb_vmPushSymbol( s_opSymbols + uiOperator ); hb_vmPush( pObject ); hb_itemSetNil( hb_stackReturnItem() ); if( pMsgArg1 ) { hb_vmPush( pMsgArg1 ); if( pMsgArg2 ) { hb_vmPush( pMsgArg2 ); hb_vmSend( 2 ); } else hb_vmSend( 1 ); } else hb_vmSend( 0 ); /* store the return value */ hb_itemMove( pResult, hb_stackReturnItem() ); return TRUE; } return FALSE; } /* * return TRUE if object has a given message */ BOOL hb_objHasMessage( PHB_ITEM pObject, PHB_DYNS pMessage ) { return hb_objGetMethod( pObject, pMessage->pSymbol, NULL ) != NULL; } /* * = hb_objHasMsg( , ) * * Check whether is an existing message for object. * * should be read as a boolean */ BOOL hb_objHasMsg( PHB_ITEM pObject, const char *szString ) { PHB_DYNS pDynSym; HB_TRACE(HB_TR_DEBUG, ("hb_objHasMsg(%p, %s)", pObject, szString)); pDynSym = hb_dynsymFindName( szString ); if( pDynSym ) { return hb_objGetMethod( pObject, pDynSym->pSymbol, NULL ) != NULL; } else { return FALSE; } } PHB_ITEM hb_objSendMessage( PHB_ITEM pObject, PHB_DYNS pMsgSym, ULONG ulArg, ... ) { if( pObject && pMsgSym ) { hb_vmPushSymbol( pMsgSym->pSymbol ); hb_vmPush( pObject ); if( ulArg ) { unsigned long i; va_list ap; va_start( ap, ulArg ); for( i = 0; i < ulArg; i++ ) { hb_vmPush( va_arg( ap, PHB_ITEM ) ); } va_end( ap ); } hb_vmSend( (USHORT) ulArg ); } else hb_errRT_BASE( EG_ARG, 3000, NULL, "__ObjSendMessage()", 0 ); { HB_STACK_TLS_PRELOAD return hb_stackReturnItem(); } } PHB_ITEM hb_objSendMsg( PHB_ITEM pObject, const char *sMsg, ULONG ulArg, ... ) { hb_vmPushSymbol( hb_dynsymGet( sMsg )->pSymbol ); hb_vmPush( pObject ); if( ulArg ) { unsigned long i; va_list ap; va_start( ap, ulArg ); for( i = 0; i < ulArg; i++ ) { hb_vmPush( va_arg( ap, PHB_ITEM ) ); } va_end( ap ); } hb_vmSend( (USHORT) ulArg ); { HB_STACK_TLS_PRELOAD return hb_stackReturnItem(); } } static PHB_DYNS hb_objGetMsgSym( PHB_ITEM pMessage ) { PHB_DYNS pDynSym = NULL; if( pMessage ) { const char * szMsg = NULL; if( HB_IS_STRING( pMessage ) ) szMsg = pMessage->item.asString.value; else if( HB_IS_SYMBOL( pMessage ) ) { pDynSym = pMessage->item.asSymbol.value->pDynSym; if( !pDynSym ) szMsg = pMessage->item.asSymbol.value->szName; } if( szMsg && *szMsg ) pDynSym = hb_dynsymGet( szMsg ); } return pDynSym; } static PHB_SYMB hb_objGetFuncSym( PHB_ITEM pItem ) { if( pItem ) { if( HB_IS_SYMBOL( pItem ) ) return pItem->item.asSymbol.value; else if( HB_IS_STRING( pItem ) ) { PHB_DYNS pDynSym = hb_dynsymFindName( hb_itemGetCPtr( pItem ) ); if( pDynSym && pDynSym->pSymbol->value.pFunPtr ) return pDynSym->pSymbol; } } return NULL; } /* send message which allows to set execution context for debugger */ void hb_dbg_objSendMessage( int iProcLevel, PHB_ITEM pObject, PHB_ITEM pMessage, int iParamOffset ) { HB_STACK_TLS_PRELOAD PHB_DYNS pMsgSym; pMsgSym = hb_objGetMsgSym( pMessage ); if( pObject && pMsgSym ) { USHORT uiParams = 0; /* set requested sender class and method id for scope verification */ if( iProcLevel > 0 ) { int iLevel = hb_stackCallDepth(); if( iProcLevel < iLevel ) { LONG lOffset = hb_stackBaseProcOffset( iLevel - iProcLevel ); if( lOffset > 0 ) { PHB_ITEM pItem = hb_stackItem( lOffset ); PHB_ITEM pBase = hb_stackBaseItem(); pBase->item.asSymbol.stackstate->uiClass = pItem->item.asSymbol.stackstate->uiClass; pBase->item.asSymbol.stackstate->uiMethod = pItem->item.asSymbol.stackstate->uiMethod; } } } else if( iProcLevel == 0 ) { /* set scope like for internal object messages to any visible method without respecting overloaded methods */ USHORT uiClass = hb_objGetClassH( pObject ); if( uiClass && uiClass <= s_uiClasses ) { PMETHOD pMethod = hb_clsFindMsg( s_pClasses[ uiClass ], pMsgSym ); if( pMethod ) { PHB_ITEM pBase = hb_stackBaseItem(); pBase->item.asSymbol.stackstate->uiClass = uiClass; pBase->item.asSymbol.stackstate->uiMethod = ( USHORT ) ( pMethod - s_pClasses[ uiClass ]->pMethods ); } } } hb_vmPushSymbol( pMsgSym->pSymbol ); hb_vmPush( pObject ); if( iParamOffset > 0 ) { int iPCount = hb_pcount(); while( iParamOffset <= iPCount ) { hb_vmPush( hb_stackItemFromBase( iParamOffset ) ); ++uiParams; ++iParamOffset; } } hb_vmSend( uiParams ); } else hb_errRT_BASE( EG_ARG, 3000, NULL, "hb_dbg_objSendMessage()", 2, pObject, pMsgSym ); } static USHORT hb_clsUpdateScope( USHORT uiScope, BOOL fAssign ) { if( !fAssign ) uiScope &= ~HB_OO_CLSTP_READONLY; else { uiScope &= ~HB_OO_CLSTP_PERSIST; if( ( uiScope & HB_OO_CLSTP_READONLY ) && !( uiScope & HB_OO_CLSTP_HIDDEN ) ) { /* Class(y) does not allow to write to HIDDEN+READONLY instance variables, [druzus] */ uiScope &= ~HB_OO_CLSTP_READONLY; uiScope |= uiScope & HB_OO_CLSTP_PROTECTED ? HB_OO_CLSTP_HIDDEN : HB_OO_CLSTP_PROTECTED; } } return uiScope; } static HB_TYPE hb_clsGetItemType( PHB_ITEM pItem, HB_TYPE nDefault ) { if( pItem ) { if( HB_IS_STRING( pItem ) ) { switch( hb_itemGetCPtr( pItem )[ 0 ] ) { case 'C': case 'c': case '\0': if( hb_strnicmp( hb_itemGetCPtr( pItem ), "code", 4 ) == 0 ) return HB_IT_BLOCK; else return HB_IT_STRING; case 'S': case 's': if( hb_strnicmp( hb_itemGetCPtr( pItem ), "str", 3 ) == 0 ) return HB_IT_STRING; else return HB_IT_SYMBOL; case 'B': case 'b': return HB_IT_BLOCK; case 'D': case 'd': return HB_IT_DATE; case 'T': case 't': return HB_IT_TIMESTAMP; case 'L': case 'l': return HB_IT_LOGICAL; case 'I': case 'i': return HB_IT_NUMINT; case 'N': case 'n': if( hb_stricmp( hb_itemGetCPtr( pItem ), "nil" ) == 0 ) return HB_IT_NIL; else return HB_IT_NUMERIC; case 'A': case 'a': return HB_IT_ARRAY; case 'P': case 'p': return HB_IT_POINTER; case 'H': case 'h': return HB_IT_HASH; } } else if( HB_IS_ARRAY( pItem ) ) { if( pItem->item.asArray.value->uiClass == 0 ) return HB_IT_ARRAY; } else if( HB_IS_NUMINT( pItem ) ) return HB_IT_NUMINT; else if( HB_IS_NUMERIC( pItem ) ) return HB_IT_NUMERIC; else if( HB_IS_DATE( pItem ) ) return HB_IT_DATE; else if( HB_IS_TIMESTAMP( pItem ) ) return HB_IT_TIMESTAMP; else if( HB_IS_LOGICAL( pItem ) ) return HB_IT_LOGICAL; else if( HB_IS_BLOCK( pItem ) ) return HB_IT_BLOCK; else if( HB_IS_POINTER( pItem ) ) return HB_IT_POINTER; else if( HB_IS_SYMBOL( pItem ) ) return HB_IT_SYMBOL; else if( HB_IS_NIL( pItem ) ) return HB_IT_NIL; } return nDefault; } /* ================================================ */ /* * HB_OO_MSG_METHOD : standard method * HB_OO_MSG_ONERROR : error handler method * HB_OO_MSG_DESTRUCTOR : destructor method * HB_OO_MSG_INLINE : inline (codeblock) method * HB_OO_MSG_ASSIGN : assign instance data * HB_OO_MSG_ACCESS : access instance data * HB_OO_MSG_CLSASSIGN : assign class data * HB_OO_MSG_CLSACCESS : access class data * HB_OO_MSG_SUPER : supercasting * HB_OO_MSG_REALCLASS : caller method real class casting * HB_OO_MSG_PERFORM : perform method * HB_OO_MSG_VIRTUAL : virtual method * HB_OO_MSG_DELEGATE : delegate method * * 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 class message not object * * HB_OO_CLSTP_SUPER 128 : message is herited * HB_OO_CLSTP_PERSIST 256 : message is persistent (PROPERTY) * HB_OO_CLSTP_NONVIRTUAL 512 : Class method constructor * HB_OO_CLSTP_OVERLOADED 1024 : Class method constructor * HB_OO_CLSTP_SYNC 2048 : message synchronized by object or class mutex * * HB_OO_MSG_METHOD : \ * HB_OO_MSG_ONERROR : > Pointer to function * HB_OO_MSG_DESTRUCTOR : / * HB_OO_MSG_INLINE : Code block * HB_OO_MSG_ASSIGN : Index to instance area array * HB_OO_MSG_ACCESS : / * HB_OO_MSG_CLSASSIGN : Index class data array * HB_OO_MSG_CLSACCESS : / * HB_OO_MSG_SUPER : Handle of super class * HB_OO_MSG_DELEGATE : delegated message symbol * * HB_OO_MSG_ACCESS : Optional initializer for (Class)DATA * HB_OO_MSG_CLSACCESS : / * HB_OO_MSG_ASSIGN : item type restriction in assignment * HB_OO_MSG_CLSASSIGN : / * HB_OO_MSG_SUPER : Superclass handle */ static BOOL hb_clsAddMsg( USHORT uiClass, const char * szMessage, USHORT uiType, USHORT uiScope, PHB_ITEM pFunction, PHB_ITEM pInit ) { if( szMessage && uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; PHB_DYNS pMessage; PMETHOD pNewMeth; USHORT uiOperator, uiSprClass = 0, uiIndex = 0, uiPrevCls, uiPrevMth; PHB_SYMB pOpSym, pFuncSym = NULL; BOOL fOK; ULONG ulOpFlags = 0; if( pClass->fLocked ) return FALSE; if( !( uiScope & ( HB_OO_CLSTP_EXPORTED | HB_OO_CLSTP_PROTECTED | HB_OO_CLSTP_HIDDEN ) ) ) uiScope |= HB_OO_CLSTP_EXPORTED; /* translate names of operator overloading messages */ if( uiType == HB_OO_MSG_DESTRUCTOR ) pMessage = s___msgDestructor.pDynSym; else if( uiType == HB_OO_MSG_ONERROR ) pMessage = s___msgOnError.pDynSym; else if( strcmp( "+", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_PLUS )->pDynSym; else if( strcmp( "-", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_MINUS )->pDynSym; else if( strcmp( "*", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_MULT )->pDynSym; else if( strcmp( "/", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_DIVIDE )->pDynSym; else if( strcmp( "%", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_MOD )->pDynSym; else if( strcmp( "^", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_POWER )->pDynSym; else if( strcmp( "**", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_POWER )->pDynSym; else if( strcmp( "++", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_INC )->pDynSym; else if( strcmp( "--", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_DEC )->pDynSym; else if( strcmp( "==", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_EXACTEQUAL )->pDynSym; else if( strcmp( "=", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_EQUAL )->pDynSym; else if( strcmp( "!=", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_NOTEQUAL )->pDynSym; else if( strcmp( "<>", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_NOTEQUAL )->pDynSym; else if( strcmp( "#", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_NOTEQUAL )->pDynSym; else if( strcmp( "<", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_LESS )->pDynSym; else if( strcmp( "<=", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_LESSEQUAL )->pDynSym; else if( strcmp( ">", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_GREATER )->pDynSym; else if( strcmp( ">=", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_GREATEREQUAL )->pDynSym; else if( strcmp( ":=", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_ASSIGN )->pDynSym; else if( strcmp( "$", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_INSTRING )->pDynSym; else if( strcmp( "$$", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_INCLUDE )->pDynSym; else if( strcmp( "!", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_NOT )->pDynSym; else if( hb_stricmp( ".NOT.", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_NOT )->pDynSym; else if( hb_stricmp( ".AND.", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_AND )->pDynSym; else if( hb_stricmp( ".OR.", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_OR )->pDynSym; else if( strcmp( "[]", szMessage ) == 0 ) pMessage = ( s_opSymbols + HB_OO_OP_ARRAYINDEX )->pDynSym; else pMessage = hb_dynsymGet( szMessage ); for( uiOperator = 0, pOpSym = s_opSymbols; uiOperator <= HB_OO_MAX_OPERATOR; ++uiOperator, ++pOpSym ) { if( pOpSym->pDynSym == pMessage ) { ulOpFlags |= 1UL << uiOperator; break; } } /* basic parameter validation */ switch( uiType ) { case HB_OO_MSG_METHOD: case HB_OO_MSG_ONERROR: case HB_OO_MSG_DESTRUCTOR: pFuncSym = hb_objGetFuncSym( pFunction ); fOK = pFuncSym != NULL; break; case HB_OO_MSG_INLINE: fOK = pFunction && HB_IS_BLOCK( pFunction ); break; case HB_OO_MSG_SUPER: uiIndex = ( USHORT ) hb_itemGetNI( pFunction ); uiSprClass = ( USHORT ) hb_itemGetNI( pInit ); fOK = uiSprClass && uiSprClass <= s_uiClasses && uiIndex <= pClass->uiDatas; break; case HB_OO_MSG_ASSIGN: case HB_OO_MSG_ACCESS: uiIndex = ( USHORT ) hb_itemGetNI( pFunction ); /* This validation can break buggy .prg code which wrongly * sets data offsets but IMHO it will help to clean the code. * [druzus] */ fOK = uiIndex && uiIndex <= pClass->uiDatas - pClass->uiDataFirst; break; case HB_OO_MSG_CLSASSIGN: case HB_OO_MSG_CLSACCESS: uiIndex = ( USHORT ) hb_itemGetNI( pFunction ); fOK = uiIndex != 0; break; case HB_OO_MSG_DELEGATE: { PHB_DYNS pDelegMsg = hb_objGetMsgSym( pFunction ); if( pDelegMsg ) { pNewMeth = hb_clsFindMsg( pClass, pDelegMsg ); if( pNewMeth ) uiIndex = ( USHORT ) ( pNewMeth - pClass->pMethods ); } fOK = uiIndex != 0; break; } case HB_OO_MSG_REALCLASS: case HB_OO_MSG_VIRTUAL: case HB_OO_MSG_PERFORM: fOK = TRUE; break; default: fOK = FALSE; } if( !fOK ) { hb_errRT_BASE( EG_ARG, 3000, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); return FALSE; } pNewMeth = hb_clsAllocMsg( pClass, pMessage ); if( ! pNewMeth ) return FALSE; uiPrevCls = uiClass; uiPrevMth = ( USHORT ) ( pClass->pMethods - pNewMeth ); #ifndef HB_VIRTUAL_HIDDEN if( uiScope & HB_OO_CLSTP_HIDDEN ) uiScope |= HB_OO_CLSTP_NONVIRTUAL; #endif if( ! pNewMeth->pMessage ) pClass->uiMethods++; /* One more message */ else { BOOL fOverLoad = ( pNewMeth->uiScope & HB_OO_CLSTP_OVERLOADED ) || ( ( pNewMeth->uiScope & HB_OO_CLSTP_NONVIRTUAL ) && pNewMeth->uiSprClass != uiClass ); uiPrevCls = pNewMeth->uiPrevCls; uiPrevMth = pNewMeth->uiPrevMth; if( ! hb_clsCanClearMethod( pNewMeth, TRUE ) ) return FALSE; memset( pNewMeth, 0, sizeof( METHOD ) ); if( fOverLoad ) uiScope |= HB_OO_CLSTP_OVERLOADED; } pNewMeth->pMessage = pMessage; pNewMeth->uiSprClass = uiClass; pNewMeth->uiPrevCls = uiPrevCls; pNewMeth->uiPrevMth = uiPrevMth; switch( uiType ) { case HB_OO_MSG_METHOD: pNewMeth->pFuncSym = pFuncSym; pNewMeth->uiScope = uiScope; break; case HB_OO_MSG_ASSIGN: pNewMeth->uiScope = hb_clsUpdateScope( uiScope, TRUE ); /* Class(y) does not allow to write to HIDDEN+READONLY instance variables, [druzus] */ if( pNewMeth->uiScope & HB_OO_CLSTP_READONLY && pNewMeth->uiScope & HB_OO_CLSTP_HIDDEN ) pNewMeth->pFuncSym = &s___msgScopeErr; else { pNewMeth->pFuncSym = &s___msgSetData; pNewMeth->uiData = uiIndex; pNewMeth->uiOffset = pClass->uiDataFirst; pNewMeth->itemType = hb_clsGetItemType( pInit, 0 ); } break; case HB_OO_MSG_ACCESS: pNewMeth->uiScope = hb_clsUpdateScope( uiScope, FALSE ); pNewMeth->uiData = uiIndex; pNewMeth->uiOffset = pClass->uiDataFirst; hb_clsAddInitValue( pClass, pInit, HB_OO_MSG_DATA, pNewMeth->uiData, pNewMeth->uiOffset, uiClass ); pNewMeth->pFuncSym = &s___msgGetData; break; case HB_OO_MSG_CLSASSIGN: pNewMeth->uiData = uiIndex; pNewMeth->itemType = hb_clsGetItemType( pInit, 0 ); pNewMeth->uiScope = hb_clsUpdateScope( uiScope, TRUE ); /* Class(y) does not allow to write to HIDDEN+READONLY instance variables, [druzus] */ if( pNewMeth->uiScope & HB_OO_CLSTP_READONLY && pNewMeth->uiScope & HB_OO_CLSTP_HIDDEN ) pNewMeth->pFuncSym = &s___msgScopeErr; else if( pNewMeth->uiScope & HB_OO_CLSTP_SHARED ) { if( hb_arrayLen( pClass->pSharedDatas ) < ( ULONG ) pNewMeth->uiData ) hb_arraySize( pClass->pSharedDatas, pNewMeth->uiData ); pNewMeth->pFuncSym = &s___msgSetShrData; } else { if( hb_arrayLen( pClass->pClassDatas ) < ( ULONG ) pNewMeth->uiData ) hb_arraySize( pClass->pClassDatas, pNewMeth->uiData ); pNewMeth->pFuncSym = &s___msgSetClsData; } break; case HB_OO_MSG_CLSACCESS: pNewMeth->uiScope = hb_clsUpdateScope( uiScope, FALSE ); pNewMeth->uiData = uiIndex; if( pNewMeth->uiScope & HB_OO_CLSTP_SHARED ) { if( hb_arrayLen( pClass->pSharedDatas ) < ( ULONG ) pNewMeth->uiData ) hb_arraySize( pClass->pSharedDatas, pNewMeth->uiData ); if( pInit && ! HB_IS_NIL( pInit ) ) /* Initializer found */ { /* Shared Classdata need to be initialized only once * ACCESS/ASSIGN methods will be inherited by subclasses * and will operate on this value so it's not necessary * to keep the init value. [druzus] */ pInit = hb_itemClone( pInit ); hb_arraySet( pClass->pSharedDatas, pNewMeth->uiData, pInit ); hb_itemRelease( pInit ); } pNewMeth->pFuncSym = &s___msgGetShrData; } else { if( hb_arrayLen( pClass->pClassDatas ) < ( ULONG ) pNewMeth->uiData ) hb_arraySize( pClass->pClassDatas, pNewMeth->uiData ); pNewMeth->uiOffset = hb_clsAddInitValue( pClass, pInit, HB_OO_MSG_CLASSDATA, pNewMeth->uiData, 0, uiClass ); pNewMeth->pFuncSym = &s___msgGetClsData; } break; case HB_OO_MSG_INLINE: pNewMeth->pFuncSym = &s___msgEvalInline; pNewMeth->uiScope = uiScope; hb_arrayAdd( pClass->pInlines, pFunction ); pNewMeth->uiData = ( USHORT ) hb_arrayLen( pClass->pInlines ); break; case HB_OO_MSG_VIRTUAL: pNewMeth->pFuncSym = &s___msgVirtual; pNewMeth->uiScope = uiScope; break; case HB_OO_MSG_SUPER: pNewMeth->uiSprClass = uiSprClass; /* store the super handel */ pNewMeth->uiOffset = uiIndex; /* offset to instance area */ pNewMeth->uiScope = uiScope; pNewMeth->pFuncSym = &s___msgSuper; break; case HB_OO_MSG_REALCLASS: pNewMeth->pFuncSym = &s___msgRealClass; pNewMeth->uiScope = uiScope; break; case HB_OO_MSG_PERFORM: pNewMeth->pFuncSym = &s___msgPerform; pNewMeth->uiScope = uiScope; break; case HB_OO_MSG_DELEGATE: pNewMeth->pFuncSym = &s___msgDelegate; pNewMeth->uiScope = uiScope; pNewMeth->uiData = uiIndex; break; case HB_OO_MSG_ONERROR: pNewMeth->pFuncSym = pFuncSym; pClass->fHasOnError = TRUE; break; case HB_OO_MSG_DESTRUCTOR: pNewMeth->pFuncSym = pFuncSym; pClass->fHasDestructor = TRUE; break; default: hb_errInternal( HB_EI_CLSINVMETHOD, NULL, "__clsAddMsg()", NULL ); } pClass->ulOpFlags |= ulOpFlags; if( uiScope & HB_OO_CLSTP_SYNC ) { pNewMeth->pRealSym = pNewMeth->pFuncSym; if( uiScope & HB_OO_CLSTP_CLASS ) { if( !pClass->pMutex ) pClass->pMutex = hb_threadMutexCreate( FALSE ); pNewMeth->pFuncSym = &s___msgSyncClass; } else { if( !pClass->uiMutexOffset ) pClass->uiMutexOffset = pClass->uiDatas + 1; pNewMeth->pFuncSym = &s___msgSync; } } } return TRUE; } /* * __clsAddMsg( , , , , [xInit], ) * * Add a message to the class. * * Class handle * Message * HB_OO_MSG_METHOD : \ * HB_OO_MSG_ONERROR : > Pointer to function * HB_OO_MSG_DESTRUCTOR : / * HB_OO_MSG_INLINE : Code block * HB_OO_MSG_DATA : \ * HB_OO_MSG_ASSIGN : > Index to instance area array * HB_OO_MSG_ACCESS : / * HB_OO_MSG_CLASSDATA : \ * HB_OO_MSG_CLSASSIGN : > Index class data array * HB_OO_MSG_CLSACCESS : / * HB_OO_MSG_SUPER : Handle of super class * HB_OO_MSG_DELEGATE : delegated message symbol * * see HB_OO_MSG_* above and: * HB_OO_MSG_REALCLASS : caller method real class casting * HB_OO_MSG_PERFORM : perform message * HB_OO_MSG_VIRTUAL : virtual message * HB_OO_MSG_DELEGATE : delegate method * * HB_OO_MSG_ACCESS : \ * HB_OO_MSG_CLSACCESS : > Optional initializer for DATA * HB_OO_MSG_DATA : / * HB_OO_MSG_CLASSDATA : / * HB_OO_MSG_SUPER : Superclass handle * HB_OO_MSG_ASSIGN : \ item type restriction in assignment not * HB_OO_MSG_CLSASSIGN: : empty character value where first letter * is item type or item of a given value * * 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 class message not object * * HB_OO_CLSTP_SUPER 128 : message is herited * HB_OO_CLSTP_PERSIST 256 : message is persistent (PROPERTY) * HB_OO_CLSTP_NONVIRTUAL 512 : Class method constructor * HB_OO_CLSTP_OVERLOADED 1024 : Class method constructor * HB_OO_CLSTP_SYNC 2048 : message synchronized by object or class mutex */ HB_FUNC( __CLSADDMSG ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); const char * szMessage = hb_parc( 2 ); if( szMessage && uiClass && uiClass <= s_uiClasses ) { USHORT nType = ( USHORT ) hb_parni( 4 ); USHORT uiScope = ( USHORT ) hb_parni( 6 ); PHB_ITEM pFunction = hb_param( 3, HB_IT_ANY ); PHB_ITEM pInit = hb_param( 5, HB_IT_ANY ); if( nType == HB_OO_MSG_DATA ) { nType = szMessage[ 0 ] == '_' ? HB_OO_MSG_ASSIGN : HB_OO_MSG_ACCESS; } else if( nType == HB_OO_MSG_CLASSDATA ) { nType = szMessage[ 0 ] == '_' ? HB_OO_MSG_CLSASSIGN : HB_OO_MSG_CLSACCESS; } /* to make xHarbour users happy ;-) */ else if( nType == HB_OO_MSG_PROPERTY || nType == HB_OO_MSG_CLASSPROPERTY ) { char szAssign[ HB_SYMBOL_NAME_LEN + 1 ]; int iLen = ( int ) hb_parclen( 2 ); if( iLen >= HB_SYMBOL_NAME_LEN ) iLen = HB_SYMBOL_NAME_LEN - 1; szAssign[ 0 ] = '_'; memcpy( szAssign + 1, szMessage, iLen ); szAssign[ iLen + 1 ] = '\0'; uiScope = ( uiScope | HB_OO_CLSTP_EXPORTED ) & ~( HB_OO_CLSTP_PROTECTED | HB_OO_CLSTP_HIDDEN ); if( nType == HB_OO_MSG_PROPERTY ) { hb_clsAddMsg( uiClass, szAssign, HB_OO_MSG_ASSIGN, ( USHORT ) ( uiScope & ~HB_OO_CLSTP_PERSIST ), pFunction, pInit ); nType = HB_OO_MSG_ACCESS; } else { hb_clsAddMsg( uiClass, szAssign, HB_OO_MSG_CLSASSIGN, ( USHORT ) ( uiScope & ~HB_OO_CLSTP_PERSIST ), pFunction, pInit ); nType = HB_OO_MSG_CLSACCESS; } } hb_clsAddMsg( uiClass, szMessage, nType, uiScope, pFunction, pInit ); } } /* * __clsNew( , , * [], [], * [] ) -> * * Create a new class * * Name of the class * Number of DATAs in the class * Optional array with handle(s) of superclass(es) * Class function symbol, when NULLpublic function * with the same name as szClassName is used * when true all functions and classes from the same * module as pClassFunc are defined as friends */ static USHORT hb_clsNew( const char * szClassName, USHORT uiDatas, PHB_ITEM pSuperArray, PHB_SYMB pClassFunc, BOOL fModuleFriendly ) { PCLASS pNewCls; PMETHOD pMethod; USHORT ui, uiSuper, uiSuperCls; USHORT * puiClassData = NULL, uiClassDataSize = 0; BOOL fClsMutex = FALSE; uiSuper = ( USHORT ) ( pSuperArray ? hb_arrayLen( pSuperArray ) : 0 ); pClassFunc = hb_vmGetRealFuncSym( pClassFunc ); pNewCls = ( PCLASS ) hb_xgrab( sizeof( CLASS ) ); memset( pNewCls, 0, sizeof( CLASS ) ); HB_CLASS_LOCK if( s_uiClasses == s_uiClsSize ) { s_uiClsSize += HB_CLASS_POOL_RESIZE; s_pClasses = ( PCLASS * ) hb_xrealloc( s_pClasses, sizeof( PCLASS ) * ( ( ULONG ) s_uiClsSize + 1 ) ); } s_pClasses[ ++s_uiClasses ] = pNewCls; pNewCls->uiClass = s_uiClasses; HB_CLASS_UNLOCK pNewCls->szName = hb_strdup( szClassName ); pNewCls->pClassSym = hb_dynsymGet( pNewCls->szName ); if( !pClassFunc ) pClassFunc = hb_vmGetRealFuncSym( pNewCls->pClassSym->pSymbol ); pNewCls->pClassFuncSym = pClassFunc; if( fModuleFriendly ) hb_vmFindModuleSymbols( pClassFunc, &pNewCls->pFriendModule, &pNewCls->uiFriendModule ); for( ui = 1; ui <= uiSuper; ++ui ) { uiSuperCls = ( USHORT ) hb_arrayGetNI( pSuperArray, ui ); if( uiSuperCls && uiSuperCls < s_uiClasses ) { PCLASS pSprCls; pSprCls = s_pClasses[ uiSuperCls ]; if( ! hb_clsInited( pNewCls ) ) /* This is the first superclass */ { hb_clsCopyClass( pNewCls, pSprCls ); } else if( !hb_clsHasParent( pNewCls, pSprCls->pClassSym ) ) { ULONG ul, ulLimit; USHORT nLenClsDatas; /* create class data translation tables */ nLenClsDatas = ( USHORT ) hb_itemSize( pSprCls->pClassDatas ); if( nLenClsDatas ) { if( nLenClsDatas > uiClassDataSize ) { if( puiClassData ) puiClassData = ( USHORT * ) hb_xrealloc( puiClassData, sizeof( USHORT ) * nLenClsDatas ); else puiClassData = ( USHORT * ) hb_xgrab( sizeof( USHORT ) * nLenClsDatas ); uiClassDataSize = nLenClsDatas; } memset( puiClassData, 0, sizeof( USHORT ) * nLenClsDatas ); } /* Copy super classs handles */ ulLimit = hb_clsMthNum( pSprCls ); for( ul = 0; ul < ulLimit; ++ul ) { if( pSprCls->pMethods[ ul ].pMessage && pSprCls->pMethods[ ul ].pFuncSym == &s___msgSuper ) { PCLASS pCls = s_pClasses[ pSprCls->pMethods[ ul ].uiSprClass ]; pMethod = hb_clsAllocMsg( pNewCls, pSprCls->pMethods[ ul ].pMessage ); if( ! pMethod ) return 0; if( pMethod->pMessage == NULL ) { pNewCls->uiMethods++; memcpy( pMethod, pSprCls->pMethods + ul, sizeof( METHOD ) ); pMethod->uiOffset = pNewCls->uiDatas; pNewCls->uiDatas += pCls->uiDatas - pCls->uiDataFirst; } } } /* add class casting if not exist */ pMethod = hb_clsAllocMsg( pNewCls, pSprCls->pClassSym ); if( ! pMethod ) return 0; if( pMethod->pMessage == NULL ) { pNewCls->uiMethods++; pMethod->pMessage = pSprCls->pClassSym; pMethod->uiSprClass = uiSuperCls; pMethod->uiScope = HB_OO_CLSTP_EXPORTED; pMethod->pFuncSym = &s___msgSuper; pMethod->uiOffset = pNewCls->uiDatas; pNewCls->uiDatas += pSprCls->uiDatas - pSprCls->uiDataFirst; } /* Copy instance area init data */ if( pSprCls->uiInitDatas ) { USHORT u; for( u = 0; u < pSprCls->uiInitDatas; ++u ) { if( pSprCls->pInitData[ u ].uiType == HB_OO_MSG_DATA ) { USHORT uiCls = pSprCls->pInitData[ u ].uiSprClass; hb_clsAddInitValue( pNewCls, pSprCls->pInitData[ u ].pInitValue, HB_OO_MSG_DATA, pSprCls->pInitData[ u ].uiData, hb_clsParentInstanceOffset( pNewCls, s_pClasses[ uiCls ]->pClassSym ), uiCls ); } } } /* Now working on other methods */ ulLimit = hb_clsMthNum( pSprCls ); for( ul = 0; ul < ulLimit; ++ul ) { if( pSprCls->pMethods[ ul ].pMessage ) { pMethod = hb_clsAllocMsg( pNewCls, pSprCls->pMethods[ ul ].pMessage ); if( ! pMethod ) return 0; /* Ok, this bucket is empty */ if( pMethod->pMessage == NULL ) { /* Now, we can increment the msg count */ pNewCls->uiMethods++; memcpy( pMethod, pSprCls->pMethods + ul, sizeof( METHOD ) ); if( ! hb_clsUpdateHiddenMessages( pMethod, pMethod, pNewCls ) ) { if( pMethod->pFuncSym == &s___msgSetClsData || pMethod->pFuncSym == &s___msgGetClsData ) { if( pMethod->uiData > nLenClsDatas ) hb_errInternal( HB_EI_CLSINVMETHOD, NULL, "__clsNew()", NULL ); if( puiClassData[ pMethod->uiData - 1 ] == 0 ) { puiClassData[ pMethod->uiData - 1 ] = ( USHORT ) hb_arrayLen( pNewCls->pClassDatas ) + 1; hb_arraySize( pNewCls->pClassDatas, puiClassData[ pMethod->uiData - 1 ] ); } if( pMethod->uiOffset ) { pMethod->uiOffset = hb_clsAddInitValue( pNewCls, pSprCls->pInitData[ pMethod->uiOffset - 1 ].pInitValue, HB_OO_MSG_CLASSDATA, puiClassData[ pMethod->uiData - 1 ], 0, uiSuperCls ); } pMethod->uiData = puiClassData[ pMethod->uiData - 1 ]; } else if( pMethod->pFuncSym == &s___msgSetData || pMethod->pFuncSym == &s___msgGetData ) { pMethod->uiOffset = hb_clsParentInstanceOffset( pNewCls, s_pClasses[ pMethod->uiSprClass ]->pClassSym ); } pMethod->uiScope |= HB_OO_CLSTP_SUPER; } } else { if( pSprCls->pMethods[ ul ].uiScope & ( HB_OO_CLSTP_OVERLOADED | HB_OO_CLSTP_NONVIRTUAL ) ) pMethod->uiScope |= HB_OO_CLSTP_OVERLOADED; hb_clsUpdateHiddenMessages( pSprCls->pMethods + ul, pMethod, pNewCls ); } } } pNewCls->ulOpFlags |= pSprCls->ulOpFlags; if( pSprCls->uiMutexOffset ) pNewCls->uiMutexOffset = 1; if( pSprCls->pMutex ) fClsMutex = TRUE; } } } if( puiClassData ) hb_xfree( puiClassData ); if( ! hb_clsInited( pNewCls ) ) { hb_clsDictInit( pNewCls, HASH_KEY ); pNewCls->pClassDatas = hb_itemArrayNew( 0 ); pNewCls->pSharedDatas = hb_itemArrayNew( 0 ); pNewCls->pInlines = hb_itemArrayNew( 0 ); } /* add self class casting */ if( hb_stricmp( pNewCls->szName, pNewCls->pClassSym->pSymbol->szName ) == 0 ) { pMethod = hb_clsAllocMsg( pNewCls, pNewCls->pClassSym ); if( ! pMethod ) return 0; if( pMethod->pMessage == NULL ) { pNewCls->uiMethods++; pMethod->pMessage = pNewCls->pClassSym; pMethod->uiSprClass = s_uiClasses; pMethod->uiScope = HB_OO_CLSTP_EXPORTED; pMethod->pFuncSym = &s___msgSuper; pMethod->uiOffset = pNewCls->uiDatas; } } pNewCls->uiDataFirst = pNewCls->uiDatas; pNewCls->uiDatas += uiDatas; if( pNewCls->uiMutexOffset ) pNewCls->uiMutexOffset = pNewCls->uiDatas + 1; if( fClsMutex && !pNewCls->pMutex ) pNewCls->pMutex = hb_threadMutexCreate( FALSE ); return s_uiClasses; } /* * hb_clsNew( , < ) -> * * := __clsNew( , , [], [], [] ) * * Create a new class * * Name of the class * Number of DATAs in the class * Optional array with handle(s) of superclass(es) * Class function symbol * when true all functions and classes from the same * module as pClassFunc are defined as friends */ HB_FUNC( __CLSNEW ) { const char * szClassName; PHB_ITEM pDatas, pSuperArray, pClassFunc, pModFriend; szClassName = hb_parc( 1 ); pDatas = hb_param( 2, HB_IT_ANY ); pSuperArray = hb_param( 3, HB_IT_ANY ); if( pSuperArray && HB_IS_NIL( pSuperArray ) ) pSuperArray = NULL; pClassFunc = hb_param( 4, HB_IT_ANY ); if( pClassFunc && HB_IS_NIL( pClassFunc ) ) pClassFunc = NULL; pModFriend = hb_param( 5, HB_IT_ANY ); if( pModFriend && HB_IS_NIL( pModFriend ) ) pModFriend = NULL; if( szClassName && ( ! pDatas || HB_IS_NUMERIC( pDatas ) ) && ( ! pSuperArray || HB_IS_ARRAY( pSuperArray ) ) && ( ! pClassFunc || HB_IS_SYMBOL( pClassFunc ) ) && ( ! pModFriend || HB_IS_LOGICAL( pModFriend ) ) ) { HB_STACK_TLS_PRELOAD USHORT uiClass; uiClass = hb_clsNew( szClassName, ( USHORT ) hb_itemGetNI( pDatas ), pSuperArray, hb_itemGetSymbol( pClassFunc ), hb_itemGetL( pModFriend ) ); hb_retni( uiClass ); } else hb_errRT_BASE( EG_ARG, 3000, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); } /* * __clsAddFriend( , ) * * Add friend function */ HB_FUNC( __CLSADDFRIEND ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); if( uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; if( !pClass->fLocked ) { PHB_SYMB pSym = hb_vmGetRealFuncSym( hb_itemGetSymbol( hb_param( 2, HB_IT_SYMBOL ) ) ); if( pSym ) hb_clsAddFriendSymbol( pClass, pSym ); } } } /* * __clsDelMsg( , ) * * Delete message (only for INLINE and METHOD) * * class handle * message */ HB_FUNC( __CLSDELMSG ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); PHB_ITEM pString = hb_param( 2, HB_IT_STRING ); if( uiClass && uiClass <= s_uiClasses && pString && ! s_pClasses[ uiClass ]->fLocked ) { PHB_DYNS pMsg = hb_dynsymFindName( pString->item.asString.value ); if( pMsg ) hb_clsFreeMsg( s_pClasses[ uiClass ], pMsg ); } } /* * hb_clsInst( ) -> * * Create a new object from class definition */ static PHB_ITEM hb_clsInst( USHORT uiClass ) { PHB_ITEM pSelf = NULL; if( uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; USHORT uiDatas = pClass->uiDatas; if( pClass->uiMutexOffset ) ++uiDatas; pSelf = hb_itemNew( NULL ); hb_arrayNew( pSelf, uiDatas ); pSelf->item.asArray.value->uiClass = uiClass; if( pClass->uiMutexOffset ) { PHB_ITEM pMutex = hb_threadMutexCreate( FALSE ); hb_arraySet( pSelf, pClass->uiMutexOffset, pMutex ); hb_itemRelease( pMutex ); } /* Initialise value if initialisation was requested */ if( pClass->uiInitDatas ) { PINITDATA pInitData = pClass->pInitData; USHORT ui = pClass->uiInitDatas; PHB_ITEM pDestItm; do { if( pInitData->uiType == HB_OO_MSG_DATA ) pDestItm = hb_arrayGetItemPtr( pSelf, pInitData->uiData + pInitData->uiOffset ); else if( pInitData->uiType == HB_OO_MSG_CLASSDATA ) { pDestItm = hb_arrayGetItemPtr( pClass->pClassDatas, pInitData->uiData ); /* do not initialize it again */ pInitData->uiType = HB_OO_MSG_INITIALIZED; } else pDestItm = NULL; if( pDestItm ) { PHB_ITEM pInit = hb_itemClone( pInitData->pInitValue ); hb_itemMove( pDestItm, pInit ); hb_itemRelease( pInit ); } ++pInitData; } while( --ui ); } } return pSelf; } /* * __clsInst( ) -> * * Create a new object from class definition */ HB_FUNC( __CLSINST ) { PHB_ITEM pSelf = hb_clsInst( ( USHORT ) hb_parni( 1 ) ); if( pSelf ) hb_itemReturnRelease( pSelf ); } /* * __clsLock( ) * Block farther class modifications */ HB_FUNC( __CLSLOCK ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); if( uiClass && uiClass <= s_uiClasses ) s_pClasses[ uiClass ]->fLocked = TRUE; } /* * __clsModMsg( , , ) * * Modify message (only for INLINE and METHOD) */ HB_FUNC( __CLSMODMSG ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); PHB_ITEM pString = hb_param( 2, HB_IT_STRING ); if( uiClass && uiClass <= s_uiClasses && pString && ! s_pClasses[ uiClass ]->fLocked ) { PHB_DYNS pMsg = hb_dynsymFindName( pString->item.asString.value ); if( pMsg ) { PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod = hb_clsFindMsg( pClass, pMsg ); if( pMethod ) { PHB_SYMB pFuncSym = pMethod->pFuncSym; if( pFuncSym == &s___msgSetData || pFuncSym == &s___msgGetData ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a DATA item", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgSetClsData || pFuncSym == &s___msgGetClsData ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a CLASSDATA item", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgSetShrData || pFuncSym == &s___msgGetShrData ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a SHARED DATA item", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgSuper || pFuncSym == &s___msgRealClass ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a SUPER class casting", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgDestructor ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a DESTRUCTOR method", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgOnError ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a ONERROR method", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgScopeErr ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a SCOPE ERROR method", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgPerform ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a PERFORM method", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgDelegate ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a DELEGATE method", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgSync ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a SYNC method", HB_ERR_FUNCNAME, 0 ); } else if( pFuncSym == &s___msgSyncClass ) { hb_errRT_BASE( EG_ARG, 3004, "Cannot modify a CLASS SYNC method", HB_ERR_FUNCNAME, 0 ); } else { PHB_ITEM pBlock = hb_param( 3, HB_IT_BLOCK ); if( pBlock ) { if( pFuncSym == &s___msgEvalInline ) { hb_arraySet( s_pClasses[ pMethod->uiSprClass ]->pInlines, pMethod->uiData, pBlock ); } else { hb_arrayAdd( pClass->pInlines, pBlock ); pMethod->uiData = ( USHORT ) hb_arrayLen( pClass->pInlines ); } } else { pFuncSym = hb_objGetFuncSym( hb_param( 3, HB_IT_ANY ) ); if( pFuncSym ) { pMethod->pFuncSym = pFuncSym; pMethod->uiData = 0; } else hb_errRT_BASE( EG_ARG, 3000, NULL, HB_ERR_FUNCNAME, 0 ); } } } } } } /* * __objGetClsName( | ) -> * * Returns class name of or */ HB_FUNC( __OBJGETCLSNAME ) { HB_STACK_TLS_PRELOAD PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT ); USHORT uiClass; if( pObject ) uiClass = pObject->item.asArray.value->uiClass; else uiClass = ( USHORT ) hb_parni( 1 ); hb_retc( hb_clsName( uiClass ) ); } /* * __objHasMsg( , | ) -> * * Is a valid message for the */ HB_FUNC( __OBJHASMSG ) { PHB_DYNS pMessage = hb_objGetMsgSym( hb_param( 2, HB_IT_ANY ) ); if( pMessage ) { HB_STACK_TLS_PRELOAD hb_retl( hb_objHasMessage( hb_param( 1, HB_IT_ANY ), pMessage ) ); } else hb_errRT_BASE_SubstR( EG_ARG, 1099, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); } /* * __objHasMsgAssigned( , | ) -> * * checks if function exists and is not virtual */ HB_FUNC( __OBJHASMSGASSIGNED ) { PHB_DYNS pMessage = hb_objGetMsgSym( hb_param( 2, HB_IT_ANY ) ); if( pMessage ) { HB_STACK_TLS_PRELOAD PHB_SYMB pExecSym = hb_objGetMethod( hb_param( 1, HB_IT_ANY ), pMessage->pSymbol, NULL ); hb_retl( pExecSym && pExecSym != &s___msgVirtual ); } else hb_errRT_BASE_SubstR( EG_ARG, 1099, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); } /* * __objSendMsg( , | , ) -> * * Send a message to an object */ HB_FUNC( __OBJSENDMSG ) { PHB_DYNS pMessage = hb_objGetMsgSym( hb_param( 2, HB_IT_ANY ) ); if( pMessage ) { HB_STACK_TLS_PRELOAD USHORT uiPCount = hb_pcount(); USHORT uiParam; hb_vmPushSymbol( pMessage->pSymbol ); /* Push message symbol */ hb_vmPush( hb_param( 1, HB_IT_ANY ) ); /* Push object */ for( uiParam = 3; uiParam <= uiPCount; ++uiParam ) /* Push arguments on stack */ { hb_vmPush( hb_stackItemFromBase( uiParam ) ); } hb_vmSend( ( USHORT ) ( uiPCount - 2 ) ); /* Execute message */ } else { hb_errRT_BASE( EG_ARG, 3000, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); } } /* * __objClone( ) -> * * Clone an object. Note the similarity with aClone ;-) */ HB_FUNC( __OBJCLONE ) { PHB_ITEM pSrcObject = hb_param( 1, HB_IT_OBJECT ); PHB_ITEM pDstObject; if( pSrcObject ) { pDstObject = hb_arrayClone( pSrcObject ); hb_itemReturnRelease( pDstObject ); } else { hb_errRT_BASE( EG_ARG, 3001, NULL, HB_ERR_FUNCNAME, 0 ); } } /* * __clsInstSuper( ) -> * * Instance super class and return class handle */ HB_FUNC( __CLSINSTSUPER ) { HB_STACK_TLS_PRELOAD PHB_ITEM pItem = hb_param( 1, HB_IT_STRING | HB_IT_SYMBOL ); USHORT uiClassH = 0, uiClass; PHB_SYMB pClassFuncSym = NULL; if( pItem ) { if( HB_IS_SYMBOL( pItem ) ) pClassFuncSym = hb_itemGetSymbol( pItem ); else if( HB_IS_STRING( pItem ) ) { PHB_DYNS pDynSym = hb_dynsymFindName( hb_itemGetCPtr( pItem ) ); if( pDynSym ) pClassFuncSym = pDynSym->pSymbol; } pClassFuncSym = hb_vmGetRealFuncSym( pClassFuncSym ); } if( pClassFuncSym ) { uiClassH = hb_clsFindClassByFunc( pClassFuncSym ); if( uiClassH == 0 ) { hb_vmPushSymbol( pClassFuncSym ); hb_vmPushNil(); hb_vmProc( 0 ); /* Execute super class */ if( hb_vmRequestQuery() == 0 ) { PHB_ITEM pObject = hb_stackReturnItem(); if( HB_IS_OBJECT( pObject ) ) { uiClass = pObject->item.asArray.value->uiClass; if( s_pClasses[ uiClass ]->pClassFuncSym == pClassFuncSym ) uiClassH = uiClass; else { uiClassH = hb_clsFindClassByFunc( pClassFuncSym ); /* still not found, try to send NEW() message */ if( uiClassH == 0 ) { hb_vmPushSymbol( &s___msgNew ); hb_vmPush( pObject ); hb_vmSend( 0 ); pObject = hb_stackReturnItem(); if( HB_IS_OBJECT( pObject ) ) { uiClass = pObject->item.asArray.value->uiClass; if( s_pClasses[ uiClass ]->pClassFuncSym == pClassFuncSym ) uiClassH = uiClass; } } } } /* This disables destructor execution for this object */ if( uiClassH && HB_IS_OBJECT( pObject ) ) pObject->item.asArray.value->uiClass = 0; else if( hb_vmRequestQuery() == 0 ) hb_errRT_BASE( EG_ARG, 3002, "Super class does not return an object", HB_ERR_FUNCNAME, 0 ); } } } else hb_errRT_BASE( EG_ARG, 3003, "Cannot find super class", HB_ERR_FUNCNAME, 0 ); hb_retni( uiClassH ); } /* * __clsAssocType( , ) -> * * Associate class with given basic type */ HB_FUNC( __CLSASSOCTYPE ) { HB_STACK_TLS_PRELOAD USHORT uiClass = ( USHORT ) hb_parni( 1 ); PHB_ITEM pType = hb_param( 2, HB_IT_ANY ); BOOL fResult = FALSE; if( uiClass && uiClass <= s_uiClasses && pType ) { HB_TYPE nType = hb_clsGetItemType( pType, HB_IT_ANY ); if( nType != HB_IT_ANY ) { switch( nType ) { case HB_IT_ARRAY: s_uiArrayClass = uiClass; break; case HB_IT_BLOCK: s_uiBlockClass = uiClass; break; case HB_IT_STRING: s_uiCharacterClass = uiClass; break; case HB_IT_DATE: s_uiDateClass = uiClass; break; case HB_IT_TIMESTAMP: s_uiTimeStampClass = uiClass; break; case HB_IT_HASH: s_uiHashClass = uiClass; break; case HB_IT_LOGICAL: s_uiLogicalClass = uiClass; break; case HB_IT_NIL: s_uiNilClass = uiClass; break; case HB_IT_NUMERIC: s_uiNumericClass = uiClass; break; case HB_IT_SYMBOL: s_uiSymbolClass = uiClass; break; case HB_IT_POINTER: s_uiPointerClass = uiClass; break; default: uiClass = 0; } fResult = uiClass != 0; } } hb_retl( fResult ); } /* * __ClsCntClasses() -> * * Return number of classes */ HB_FUNC( __CLSCNTCLASSES ) { HB_STACK_TLS_PRELOAD hb_retni( ( int ) s_uiClasses ); } /* * __cls_CntClsData( ) -> * * Return number of class datas */ HB_FUNC( __CLS_CNTCLSDATA ) { HB_STACK_TLS_PRELOAD USHORT uiClass = ( USHORT ) hb_parni( 1 ); hb_retni( uiClass && uiClass <= s_uiClasses ? hb_arrayLen( s_pClasses[ uiClass ]->pClassDatas ) : 0 ); } /* * __cls_CntShrData( ) -> * * Return number of class datas */ HB_FUNC( __CLS_CNTSHRDATA ) { HB_STACK_TLS_PRELOAD USHORT uiClass = ( USHORT ) hb_parni( 1 ); hb_retni( uiClass && uiClass <= s_uiClasses ? hb_arrayLen( s_pClasses[ uiClass ]->pSharedDatas ) : 0 ); } /* * __cls_CntData( ) -> * * Return number of datas */ HB_FUNC( __CLS_CNTDATA ) { HB_STACK_TLS_PRELOAD USHORT uiClass = ( USHORT ) hb_parni( 1 ); hb_retni( uiClass && uiClass <= s_uiClasses ? s_pClasses[ uiClass ]->uiDatas : 0 ); } /* * __cls_DecData( ) -> * * Decrease number of datas and return new value */ HB_FUNC( __CLS_DECDATA ) { HB_STACK_TLS_PRELOAD USHORT uiClass = ( USHORT ) hb_parni( 1 ); if( uiClass && uiClass <= s_uiClasses && s_pClasses[ uiClass ]->uiDatas > s_pClasses[ uiClass ]->uiDataFirst ) { if( !s_pClasses[ uiClass ]->fLocked ) s_pClasses[ uiClass ]->uiDatas--; hb_retni( s_pClasses[ uiClass ]->uiDatas - s_pClasses[ uiClass ]->uiDataFirst ); } else hb_retni( 0 ); } /* * __cls_IncData( ) -> * Increase number of datas and return offset to new value */ HB_FUNC( __CLS_INCDATA ) { HB_STACK_TLS_PRELOAD USHORT uiClass = ( USHORT ) hb_parni( 1 ); if( uiClass && uiClass <= s_uiClasses ) { if( !s_pClasses[ uiClass ]->fLocked ) s_pClasses[ uiClass ]->uiDatas++; hb_retni( s_pClasses[ uiClass ]->uiDatas - s_pClasses[ uiClass ]->uiDataFirst ); } else hb_retni( 0 ); } /* NOTE: Undocumented Clipper function */ /* see for parameter compatibility with Clipper. */ HB_FUNC( __CLASSNEW ) { HB_FUNC_EXEC( __CLSNEW ); } /* NOTE: Undocumented Clipper function */ HB_FUNC( __CLASSINSTANCE ) { HB_FUNC_EXEC( __CLSINST ); } /* NOTE: Undocumented Clipper function */ HB_FUNC( __CLASSADD ) { HB_FUNC_EXEC( __CLSADDMSG ); } /* NOTE: Undocumented Clipper function */ HB_FUNC( __CLASSNAME ) { HB_STACK_TLS_PRELOAD hb_retc( hb_clsName( ( USHORT ) hb_parni( 1 ) ) ); } /* NOTE: Undocumented Clipper function */ HB_FUNC( __CLASSSEL ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); PHB_ITEM pReturn = hb_itemNew( NULL ); if( uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod = pClass->pMethods; ULONG ulLimit = hb_clsMthNum( pClass ), ulPos = 0; hb_arrayNew( pReturn, pClass->uiMethods ); /* Create a transfer array */ do { if( pMethod->pMessage ) /* Hash Entry used ? */ hb_arraySetC( pReturn, ++ulPos, pMethod->pMessage->pSymbol->szName ); ++pMethod; } while( --ulLimit ); if( ulPos < ( ULONG ) pClass->uiMethods ) hb_arraySize( pReturn, ulPos ); } hb_itemReturnRelease( pReturn ); } /* to be used from Classes ERROR HANDLER method */ HB_FUNC( __GETMESSAGE ) { HB_STACK_TLS_PRELOAD hb_retc( hb_stackItem( hb_stackBaseItem()->item.asSymbol.stackstate->lBaseItem )->item.asSymbol.value->szName ); } HB_FUNC( __CLSPARENT ) { HB_STACK_TLS_PRELOAD hb_retl( hb_clsIsParent( ( USHORT ) hb_parni( 1 ) , hb_parc( 2 ) ) ); } HB_FUNC( __SENDER ) { HB_STACK_TLS_PRELOAD LONG lOffset = hb_stackBaseProcOffset( 2 ); if( lOffset > 0 ) { PHB_ITEM pSelf = hb_stackItem( lOffset + 1 ); /* Is it inline method? */ if( lOffset > 0 && HB_IS_BLOCK( pSelf ) && hb_stackItem( lOffset )->item.asSymbol.value == &hb_symEval ) { pSelf = hb_stackItem( hb_stackItem( lOffset )-> item.asSymbol.stackstate->lBaseItem + 1 ); } if( HB_IS_OBJECT( pSelf ) ) { hb_itemReturn( pSelf ); } } } HB_FUNC( __CLSSYNCSIGNAL ) { #if defined( HB_MT_VM ) hb_threadMutexSyncSignal( hb_param( 1, HB_IT_ANY ) ); #endif /* HB_MT_VM */ } HB_FUNC( __CLSSYNCWAIT ) { #if defined( HB_MT_VM ) HB_STACK_TLS_PRELOAD PHB_ITEM pMutex = NULL; ULONG ulMilliSec = HB_THREAD_INFINITE_WAIT; LONG lOffset = hb_stackBaseProcOffset( 2 ); if( lOffset > 0 ) { PHB_ITEM pBase = hb_stackItem( lOffset ); PHB_STACK_STATE pStack = pBase->item.asSymbol.stackstate; USHORT uiClass = pStack->uiClass; if( uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; if( pMethod->pFuncSym == &s___msgSync ) { PHB_ITEM pSelf = hb_stackItem( lOffset + 1 ); /* Is it inline method? */ if( HB_IS_BLOCK( pSelf ) && pBase->item.asSymbol.value == &hb_symEval ) pSelf = hb_stackItem( pBase->item.asSymbol.stackstate->lBaseItem + 1 ); uiClass = hb_objGetClass( pSelf ); if( uiClass && uiClass <= s_uiClasses ) pMutex = hb_arrayGetItemPtr( pSelf, s_pClasses[ uiClass ]->uiMutexOffset ); } else if( pMethod->pFuncSym == &s___msgSyncClass ) pMutex = pClass->pMutex; } } if( HB_ISNUM( 2 ) ) { double dTimeOut = hb_parnd( 2 ); if( dTimeOut > 0 ) ulMilliSec = ( ULONG ) ( dTimeOut * 10 ); } hb_retl( hb_threadMutexSyncWait( hb_param( 1, HB_IT_ANY ), ulMilliSec, pMutex ) ); #endif /* HB_MT_VM */ } /* * ClassH( ) -> * * Returns class handle of */ HB_FUNC( __CLASSH ) { HB_STACK_TLS_PRELOAD PHB_ITEM pObject = hb_param( 1, HB_IT_ANY ); hb_retni( pObject ? hb_objGetClassH( pObject ) : 0 ); } /* ================================================ */ /* * := :ClassH() * * Returns class handle of */ static HARBOUR hb___msgClassH( void ) { HB_STACK_TLS_PRELOAD hb_retni( hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ); } /* * := :ClassName() * * Return class name of . Can also be used for all types. */ static HARBOUR hb___msgClassName( void ) { HB_STACK_TLS_PRELOAD USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass; if( uiClass ) hb_retc( s_pClasses[ uiClass ]->szName ); else hb_retc( hb_objGetClsName( hb_stackSelfItem() ) ); } static int hb_methodType( PMETHOD pMethod ) { PHB_SYMB pFuncSym = pMethod->pFuncSym; if( pFuncSym == &s___msgSync || pFuncSym == &s___msgSyncClass ) pFuncSym = pMethod->pRealSym; if ( pFuncSym == &s___msgSetClsData || pFuncSym == &s___msgGetClsData || pFuncSym == &s___msgSetShrData || pFuncSym == &s___msgGetShrData ) return HB_OO_MSG_CLASSDATA; else if( pFuncSym == &s___msgSetData || pFuncSym == &s___msgGetData ) return HB_OO_MSG_DATA; else if( pFuncSym == &s___msgEvalInline ) return HB_OO_MSG_INLINE; else if( pFuncSym == &s___msgVirtual ) return HB_OO_MSG_VIRTUAL; else if( pFuncSym == &s___msgSuper ) return HB_OO_MSG_SUPER; else if( pFuncSym == &s___msgRealClass ) return HB_OO_MSG_REALCLASS; else if( pFuncSym == &s___msgDelegate ) return HB_OO_MSG_DELEGATE; else if( pFuncSym == &s___msgPerform ) return HB_OO_MSG_PERFORM; else if( pMethod->pMessage == s___msgOnError.pDynSym ) return HB_OO_MSG_ONERROR; else if( pMethod->pMessage == s___msgDestructor.pDynSym ) return HB_OO_MSG_DESTRUCTOR; else return HB_OO_MSG_METHOD; } /* * := :ClassSel() * * Returns all the messages in */ static HARBOUR hb___msgClassSel( void ) { HB_STACK_TLS_PRELOAD USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass; if( uiClass && uiClass <= s_uiClasses ) { PHB_ITEM pReturn, pItem; PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod = pClass->pMethods; ULONG ulLimit = hb_clsMthNum( pClass ), ulPos = 0; USHORT nParam, nScope; BOOL lFull; nParam = hb_pcount() > 0 ? ( USHORT ) hb_parni( 1 ) : HB_MSGLISTALL; nScope = hb_pcount() > 1 ? ( USHORT ) hb_parni( 2 ) : 0; lFull = hb_pcount() > 2 && HB_ISLOG( 3 ) && hb_parl( 3 ); pReturn = hb_itemArrayNew( pClass->uiMethods ); do { if( pMethod->pMessage ) /* Hash Entry used ? */ { if( ( nParam == HB_MSGLISTALL ) || ( nParam == HB_MSGLISTCLASS && hb_methodType( pMethod ) == HB_OO_MSG_CLASSDATA ) || ( nParam == HB_MSGLISTPURE && hb_methodType( pMethod ) != HB_OO_MSG_CLASSDATA ) ) { if( nScope == 0 || ( pMethod->uiScope & nScope ) != 0 ) { if( lFull ) { pItem = hb_arrayGetItemPtr( pReturn, ++ulPos ); hb_arrayNew( pItem, 4 ); hb_arraySetC( pItem, HB_OO_DATA_SYMBOL, pMethod->pMessage->pSymbol->szName ); hb_arraySetNI( pItem, HB_OO_DATA_TYPE, hb_methodType( pMethod) ); hb_arraySetNI( pItem, HB_OO_DATA_SCOPE, pMethod->uiScope ); } else hb_arraySetC( pReturn, ++ulPos, pMethod->pMessage->pSymbol->szName ); } } } ++pMethod; } while( --ulLimit && ulPos < ( ULONG ) pClass->uiMethods ); if( ulPos < ( ULONG ) pClass->uiMethods ) hb_arraySize( pReturn, ulPos ); hb_itemReturnRelease( pReturn ); } } #if 0 /* * __msgClass() * * Internal function to return Self at Self:Class call (classy compatibility) */ static HARBOUR hb___msgClass( void ) { hb_itemReturnForward( hb_stackSelfItem() ); } /* Added by JfL&RaC * <= :IsDerivedFrom( xParam ) * * Return true if is derived from xParam. * xParam can be either an obj or a classname */ static HARBOUR hb___msgClassParent( void ) { char * szParentName = NULL; PHB_ITEM pItem; USHORT uiClass; uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass; pItemParam = hb_param( 1, HB_IT_ANY ); if( pItemParam ) { if( HB_IS_OBJECT( pItemParam ) ) szParentName = hb_objGetClsName( pItemParam ); else if( HB_IS_STRING( pItemParam ) ) szParentName = hb_parc( pItemParam ); } hb_retl( szParentName && hb_clsIsParent( uiClass , szParentName ) ); } #endif /* * __msgEvalInline() * * Internal function executed for inline methods */ static HARBOUR hb___msgEvalInline( void ) { HB_STACK_TLS_PRELOAD PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate; PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; USHORT uiPCount = hb_pcount(), uiParam; PHB_ITEM pBlock; hb_vmPushSymbol( &hb_symEval ); hb_vmPush( hb_arrayGetItemPtr( s_pClasses[ pMethod->uiSprClass ]->pInlines, pMethod->uiData ) ); pBlock = hb_stackItemFromTop( -1 ); /* Push block */ pBlock->item.asBlock.hclass = pStack->uiClass; pBlock->item.asBlock.method = pStack->uiMethod; hb_vmPush( hb_stackSelfItem() ); /* Push self as first argument */ for( uiParam = 1; uiParam <= uiPCount; uiParam++ ) { hb_vmPush( hb_stackItemFromBase( uiParam ) ); } hb_vmSend( ( USHORT ) ( uiPCount + 1 ) ); } static HARBOUR hb___msgPerform( void ) { HB_STACK_TLS_PRELOAD PHB_ITEM pItem = hb_param( 1, HB_IT_ANY ); USHORT uiPCount = hb_pcount(), uiParam; PHB_SYMB pSym = NULL; if( pItem ) { if( HB_IS_SYMBOL( pItem ) ) pSym = pItem->item.asSymbol.value; else if( HB_IS_OBJECT( pItem ) && s_pClasses[ pItem->item.asArray.value->uiClass ]->pClassSym == s___msgSymbol.pDynSym ) { /* Dirty hack */ pItem = hb_arrayGetItemPtr( pItem, 1 ); if( pItem && HB_IS_SYMBOL( pItem ) ) pSym = pItem->item.asSymbol.value; } if( pSym ) { hb_vmPushSymbol( pSym ); hb_vmPush( hb_stackSelfItem() ); for( uiParam = 2; uiParam <= uiPCount; uiParam++ ) { hb_vmPush( hb_stackItemFromBase( uiParam ) ); } hb_vmSend( ( USHORT ) ( uiPCount - 1 ) ); } } } static HARBOUR hb___msgDelegate( void ) { HB_STACK_TLS_PRELOAD PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate; PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; PHB_SYMB pExecSym = pClass->pMethods[ pMethod->uiData ].pFuncSym; if( pExecSym ) HB_VM_FUNCUNREF( pExecSym ); if( pExecSym && HB_VM_ISFUNC( pExecSym ) ) { HB_VM_EXECUTE( pExecSym ); } else { hb___msgNoMethod(); } } static HARBOUR hb___msgSync( void ) { HB_STACK_TLS_PRELOAD PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate; PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; PHB_SYMB pExecSym = pMethod->pRealSym; if( pExecSym ) HB_VM_FUNCUNREF( pExecSym ); if( pExecSym && HB_VM_ISFUNC( pExecSym ) ) { PHB_ITEM pObject = hb_stackSelfItem(); USHORT uiClass = hb_objGetClass( pObject ); PHB_ITEM pMutex = NULL; if( uiClass && uiClass <= s_uiClasses ) pMutex = hb_arrayGetItemPtr( pObject, s_pClasses[ uiClass ]->uiMutexOffset ); if( !pMutex || hb_threadMutexLock( pMutex ) ) { HB_VM_EXECUTE( pExecSym ); if( pMutex ) hb_threadMutexUnlock( pMutex ); } } else { hb___msgNoMethod(); } } static HARBOUR hb___msgSyncClass( void ) { HB_STACK_TLS_PRELOAD PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate; PCLASS pClass = s_pClasses[ pStack->uiClass ]; PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; PHB_SYMB pExecSym = pMethod->pRealSym; if( pExecSym ) HB_VM_FUNCUNREF( pExecSym ); if( pExecSym && HB_VM_ISFUNC( pExecSym ) ) { if( !pClass->pMutex || hb_threadMutexLock( pClass->pMutex ) ) { HB_VM_EXECUTE( pExecSym ); if( pClass->pMutex ) hb_threadMutexUnlock( pClass->pMutex ); } } else { hb___msgNoMethod(); } } /* * __msgNoMethod() * * Internal function for generating error when not existing message is sent */ static HARBOUR hb___msgNoMethod( void ) { HB_STACK_TLS_PRELOAD 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 ] == '_' ) { hb_snprintf( szDesc, sizeof( szDesc ), "Class: '%s' has no property", hb_objGetClsName( hb_stackSelfItem() ) ); hb_errRT_BASE_SubstR( EG_NOVARMETHOD, 1005, szDesc, pSym->szName + 1, HB_ERR_ARGS_BASEPARAMS ); } else { hb_snprintf( szDesc, sizeof( szDesc ), "Class: '%s' has no exported method", hb_objGetClsName( hb_stackSelfItem() ) ); hb_errRT_BASE_SubstR( EG_NOMETHOD, 1004, szDesc, pSym->szName, HB_ERR_ARGS_BASEPARAMS ); } #endif } /* * __msgScopeErr() * * Internal function for generating error when not existing message is sent */ static HARBOUR hb___msgScopeErr( void ) { HB_STACK_TLS_PRELOAD char * pszProcName; PHB_ITEM pObject = hb_stackSelfItem(); PMETHOD pMethod = s_pClasses[ hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ]->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; pszProcName = hb_xstrcpy( NULL, hb_objGetClsName( pObject ), ":", pMethod->pMessage->pSymbol->szName, NULL ); if( pMethod->uiScope & HB_OO_CLSTP_HIDDEN ) hb_errRT_BASE( EG_NOMETHOD, 41, "Scope violation (hidden)", pszProcName, 0 ); else hb_errRT_BASE( EG_NOMETHOD, 42, "Scope violation (protected)", pszProcName, 0 ); hb_xfree( pszProcName ); } static HARBOUR hb___msgTypeErr( void ) { HB_STACK_TLS_PRELOAD char * pszProcName; PHB_ITEM pObject = hb_stackSelfItem(); PMETHOD pMethod = s_pClasses[ hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ]->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; pszProcName = hb_xstrcpy( NULL, hb_objGetClsName( pObject ), ":", pMethod->pMessage->pSymbol->szName + 1, NULL ); hb_errRT_BASE( EG_NOMETHOD, 44, "Assigned value is wrong class", pszProcName, HB_ERR_ARGS_BASEPARAMS ); hb_xfree( pszProcName ); } /* * __msgSuper() * * Internal function to return a superobject */ static HARBOUR hb___msgSuper( void ) { HB_STACK_TLS_PRELOAD PHB_STACK_STATE pStack = hb_stackBaseItem()->item.asSymbol.stackstate; hb_clsMakeSuperObject( hb_stackReturnItem(), hb_stackSelfItem(), s_pClasses[ pStack->uiClass ]->pMethods[ pStack->uiMethod ].uiSprClass ); } /* * __msgRealClass() * * Internal function to return a superobject of class where the method was * defined */ static HARBOUR hb___msgRealClass( void ) { HB_STACK_TLS_PRELOAD PHB_ITEM pObject = hb_stackSelfItem(); USHORT uiClass = hb_clsSenderMethodClasss(); USHORT uiCurClass = hb_objGetClassH( pObject ); if( uiClass && uiClass != uiCurClass && hb_clsSenderObjectClasss() == uiCurClass ) { hb_clsMakeSuperObject( hb_stackReturnItem(), pObject, uiClass ); } else { hb_itemReturnForward( pObject ); } } /* * __msgGetClsData() * * Internal function to return a CLASSDATA */ static HARBOUR hb___msgGetClsData( void ) { HB_STACK_TLS_PRELOAD PCLASS pClass = s_pClasses[ hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ]; PMETHOD pMethod = pClass->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; hb_arrayGet( pClass->pClassDatas, pMethod->uiData, hb_stackReturnItem() ); } /* * __msgSetClsData() * * Internal function to set a CLASSDATA */ static HARBOUR hb___msgSetClsData( void ) { HB_STACK_TLS_PRELOAD PCLASS pClass = s_pClasses[ hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ]; PMETHOD pMethod = pClass->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; PHB_ITEM pReturn = hb_param( 1, HB_IT_ANY ); if( !pReturn ) hb_arrayGet( pClass->pClassDatas, pMethod->uiData, hb_stackReturnItem() ); else { if( pMethod->itemType && ! ( pMethod->itemType & HB_ITEM_TYPERAW( pReturn ) ) ) { if( pMethod->itemType == HB_IT_NUMINT && HB_IS_NUMERIC( pReturn ) ) hb_itemPutNInt( pReturn, hb_itemGetNInt( pReturn ) ); else { (s___msgTypeErr.value.pFunPtr)(); return; } } hb_arraySet( pClass->pClassDatas, pMethod->uiData, pReturn ); hb_itemReturnForward( pReturn ); } } /* * __msgGetShrData() * * Internal function to return a SHAREDDATA */ static HARBOUR hb___msgGetShrData( void ) { HB_STACK_TLS_PRELOAD PCLASS pClass = s_pClasses[ hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ]; PMETHOD pMethod = pClass->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; hb_arrayGet( s_pClasses[ pMethod->uiSprClass ]->pSharedDatas, pMethod->uiData, hb_stackReturnItem() ); } /* * __msgSetShrData() * * Internal function to set a SHAREDDATA */ static HARBOUR hb___msgSetShrData( void ) { HB_STACK_TLS_PRELOAD PCLASS pClass = s_pClasses[ hb_stackBaseItem()->item.asSymbol.stackstate->uiClass ]; PMETHOD pMethod = pClass->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; PHB_ITEM pReturn = hb_param( 1, HB_IT_ANY ); if( !pReturn ) hb_arrayGet( s_pClasses[ pMethod->uiSprClass ]->pSharedDatas, pMethod->uiData, hb_stackReturnItem() ); else { if( pMethod->itemType && ! ( pMethod->itemType & HB_ITEM_TYPERAW( pReturn ) ) ) { if( pMethod->itemType == HB_IT_NUMINT && HB_IS_NUMERIC( pReturn ) ) hb_itemPutNInt( pReturn, hb_itemGetNInt( pReturn ) ); else { (s___msgTypeErr.value.pFunPtr)(); return; } } hb_arraySet( s_pClasses[ pMethod->uiSprClass ]->pSharedDatas, pMethod->uiData, pReturn ); hb_itemReturnForward( pReturn ); } } /* * __msgGetData() * * Internal function to return a DATA */ static HARBOUR hb___msgGetData( void ) { HB_STACK_TLS_PRELOAD PHB_ITEM pObject = hb_stackSelfItem(); if( HB_IS_ARRAY( pObject ) ) { USHORT uiObjClass = pObject->item.asArray.value->uiClass; USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass; PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod = pClass->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; ULONG ulIndex = pMethod->uiData; if( uiClass != uiObjClass ) { ulIndex += hb_clsParentInstanceOffset( s_pClasses[ uiObjClass ], s_pClasses[ pMethod->uiSprClass ]->pClassSym ); } else { ulIndex += pMethod->uiOffset; } hb_arrayGet( pObject, ulIndex, hb_stackReturnItem() ); } } /* * __msgSetData() * * Internal function to set a DATA */ static HARBOUR hb___msgSetData( void ) { HB_STACK_TLS_PRELOAD PHB_ITEM pObject = hb_stackSelfItem(); if( HB_IS_ARRAY( pObject ) ) { PHB_ITEM pReturn = hb_param( 1, HB_IT_ANY ); USHORT uiObjClass = pObject->item.asArray.value->uiClass; USHORT uiClass = hb_stackBaseItem()->item.asSymbol.stackstate->uiClass; PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod = pClass->pMethods + hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; ULONG ulIndex = pMethod->uiData; if( uiClass != uiObjClass ) { ulIndex += hb_clsParentInstanceOffset( s_pClasses[ uiObjClass ], s_pClasses[ pMethod->uiSprClass ]->pClassSym ); } else { ulIndex += pMethod->uiOffset; } if( !pReturn ) hb_arrayGet( pObject, ulIndex, hb_stackReturnItem() ); else { if( pMethod->itemType && ! ( pMethod->itemType & HB_ITEM_TYPERAW( pReturn ) ) ) { if( pMethod->itemType == HB_IT_NUMINT && HB_IS_NUMERIC( pReturn ) ) hb_itemPutNInt( pReturn, hb_itemGetNInt( pReturn ) ); else { (s___msgTypeErr.value.pFunPtr)(); return; } } /* will arise only if the class has been modified after first instance */ if( ulIndex > hb_arrayLen( pObject ) ) /* Resize needed ? */ hb_arraySize( pObject, ulIndex ); /* Make large enough */ hb_arraySet( pObject, ulIndex, pReturn ); hb_itemReturnForward( pReturn ); } } } /* No comment :-) */ static HARBOUR hb___msgVirtual( void ) { /* hb_ret(); */ /* NOTE: It's safe to comment this out */ ; } static HARBOUR hb___msgNull( void ) { ; } #ifndef HB_NO_PROFILER void hb_mthAddTime( ULONG ulClockTicks ) { PHB_ITEM pObject = hb_stackSelfItem(); PCLASS pClass = s_pClasses[ hb_objGetClassH( pObject ) ]; USHORT uiMethod = hb_stackBaseItem()->item.asSymbol.stackstate->uiMethod; if( pClass && uiMethod < hb_clsMthNum( pClass ) ) { PMETHOD pMethod = pClass->pMethods + uiMethod; pMethod->ulCalls++; pMethod->ulTime += ulClockTicks; return; } if( HB_IS_BLOCK( pObject ) ) { PHB_SYMB pSym = hb_stackBaseItem()->item.asSymbol.value; if( pSym == &hb_symEval || pSym->pDynSym == hb_symEval.pDynSym ) { pSym->pDynSym->ulCalls++; if( --pSym->pDynSym->ulRecurse == 0 ) pSym->pDynSym->ulTime += ulClockTicks; } } } #endif HB_FUNC( __GETMSGPRF ) /* profiler: returns a method called and consumed times */ /* ( nClass, cMsg ) --> aMethodInfo { nTimes, nTime } */ { HB_STACK_TLS_PRELOAD #ifndef HB_NO_PROFILER USHORT uiClass = ( USHORT ) hb_parni( 1 ); char * cMsg = hb_parc( 2 ); hb_reta( 2 ); if( uiClass && uiClass <= s_uiClasses && cMsg && *cMsg ) { PHB_DYNS pMsg = hb_dynsymFindName( cMsg ); if( pMsg ) { PMETHOD pMethod = hb_clsFindMsg( s_pClasses[ uiClass ], pMsg ); if( pMethod ) { hb_storvnl( pMethod->ulCalls, -1, 1 ); hb_storvnl( pMethod->ulTime, -1, 2 ); return; } } } #else hb_reta( 2 ); #endif hb_storvnl( 0, -1, 1 ); hb_storvnl( 0, -1, 2 ); } /* __ClsGetProperties( nClassHandle, [ lAllExported ] ) --> 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 (PERSISTENT) or also EXPORTED * if second parameter is true and message has corresponding * assign message (with "_" prefix) */ HB_FUNC( __CLSGETPROPERTIES ) { USHORT uiClass = ( USHORT ) hb_parni( 1 ); PHB_ITEM pReturn = hb_itemNew( NULL ); if( uiClass && uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ uiClass ]; PMETHOD pMethod; ULONG ulLimit, ulCount; USHORT uiScope = HB_OO_CLSTP_PERSIST; if( HB_ISLOG( 2 ) && hb_parl( 2 ) ) uiScope |= HB_OO_CLSTP_EXPORTED; ulCount = 0; ulLimit = hb_clsMthNum( pClass ); pMethod = pClass->pMethods; do { if( pMethod->pMessage && ( pMethod->uiScope & uiScope ) != 0 ) { if( ( pMethod->uiScope & HB_OO_CLSTP_PERSIST ) != 0 ) ++ulCount; else if( pMethod->pMessage->pSymbol->szName[ 0 ] == '_' ) { PHB_DYNS pMsg = hb_dynsymFind( pMethod->pMessage->pSymbol->szName + 1 ); if( pMsg && hb_clsFindMsg( pClass, pMsg ) ) ++ulCount; } } ++pMethod; } while( --ulLimit ); hb_arrayNew( pReturn, ulCount ); ulCount = 0; ulLimit = hb_clsMthNum( pClass ); pMethod = pClass->pMethods; do { if( pMethod->pMessage && ( pMethod->uiScope & uiScope ) != 0 ) { if( ( pMethod->uiScope & HB_OO_CLSTP_PERSIST ) != 0 ) hb_arraySetC( pReturn, ++ulCount, pMethod->pMessage->pSymbol->szName ); else if( pMethod->pMessage->pSymbol->szName[ 0 ] == '_' ) { PHB_DYNS pMsg = hb_dynsymFind( pMethod->pMessage->pSymbol->szName + 1 ); if( pMsg && hb_clsFindMsg( pClass, pMsg ) ) hb_arraySetC( pReturn, ++ulCount, pMethod->pMessage->pSymbol->szName + 1 ); } } ++pMethod; } while( --ulLimit ); } hb_itemReturnRelease( pReturn ); } /* extend the size of classes buffer to given value to avoid later * RT reallocations. It may be useful in some very seldom cases * for MT programs which will allocate dynamically at runtime * more then 16386 classes. In practice rather impossible though * who knows ;-) */ HB_FUNC( __CLSPREALLOCATE ) { HB_STACK_TLS_PRELOAD LONG lNewSize = hb_parnl( 1 ); if( lNewSize > ( LONG ) USHRT_MAX ) lNewSize = USHRT_MAX; HB_CLASS_LOCK if( lNewSize > ( LONG ) s_uiClsSize ) { s_uiClsSize = ( USHORT ) lNewSize; s_pClasses = ( PCLASS * ) hb_xrealloc( s_pClasses, sizeof( PCLASS ) * ( ( ULONG ) s_uiClsSize + 1 ) ); } HB_CLASS_UNLOCK hb_retnl( s_uiClsSize ); } HB_FUNC( __CLSLOCKDEF ) { HB_STACK_TLS_PRELOAD PHB_ITEM pClsItm = hb_param( 1, HB_IT_BYREF ); BOOL fLocked = FALSE; if( pClsItm && HB_IS_NIL( pClsItm ) ) { if( !s_pClassMtx || hb_threadMutexLock( s_pClassMtx ) ) { if( HB_IS_NIL( pClsItm ) ) fLocked = TRUE; else if( s_pClassMtx ) hb_threadMutexUnlock( s_pClassMtx ); } } hb_retl( fLocked ); } HB_FUNC( __CLSUNLOCKDEF ) { PHB_ITEM pClsDst = hb_param( 1, HB_IT_BYREF ), pClsSrc = hb_param( 2, HB_IT_ANY ); if( pClsDst && pClsSrc && HB_IS_NIL( pClsDst ) && ! HB_ISBYREF( 2 ) ) { /* intentional low level hack to eliminate race condition in * unprotected readonly access. * hb_itemMove() uses memcpy() for whole HB_ITEM structure first * coping 'type' and then 'item' parts of HB_ITEM so it cannot be * used by us. [druzus] */ memcpy( &pClsDst->item, &pClsSrc->item, sizeof( pClsDst->item ) ); /* pClsDst->item.asArray.value = pClsSrc->item.asArray.value; */ pClsDst->type = pClsSrc->type; pClsSrc->type = HB_IT_NIL; } if( s_pClassMtx ) hb_threadMutexUnlock( s_pClassMtx ); } /* 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 */ { HB_STACK_TLS_PRELOAD PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT ); USHORT uiPrevClassHandle = 0; if( pObject ) { USHORT uiClass = ( USHORT ) hb_parni( 2 ); uiPrevClassHandle = pObject->item.asArray.value->uiClass; if( uiClass <= s_uiClasses ) pObject->item.asArray.value->uiClass = uiClass; } hb_retnl( uiPrevClassHandle ); } /* Dirty functions which converts array to object of given class * __OBJSETCLASS( , [, ] ) -> */ HB_FUNC( __OBJSETCLASS ) { PHB_ITEM pObject = hb_param( 1, HB_IT_OBJECT ); if( pObject && pObject->item.asArray.value->uiClass == 0 ) { const char * szClass = hb_parc( 2 ); if( szClass ) hb_objSetClass( pObject, szClass, hb_parc( 3 ) ); } hb_itemReturn( pObject ); } /* Harbour equivalent for Clipper internal __mdCreate() */ USHORT hb_clsCreate( USHORT usSize, const char * szClassName ) { return hb_clsNew( szClassName, usSize, NULL, NULL, FALSE ); } /* Harbour equivalent for Clipper internal __mdAdd() */ void hb_clsAdd( USHORT usClassH, const char * szMethodName, PHB_FUNC pFuncPtr ) { PHB_SYMB pExecSym; PHB_ITEM pFuncItem; /* * We can use empty name "" for this symbol in hb_symbolNew() * It's only envelop for function with additional execution * information for HVM not registered symbol. [druzus] */ pExecSym = hb_symbolNew( "" ); pExecSym->value.pFunPtr = pFuncPtr; pFuncItem = hb_itemPutSymbol( NULL, pExecSym ); hb_clsAddMsg( usClassH, szMethodName, HB_OO_MSG_METHOD, 0, pFuncItem, NULL ); hb_itemRelease( pFuncItem ); } /* Harbour equivalent for Clipper internal __mdAssociate() */ void hb_clsAssociate( USHORT usClassH ) { PHB_ITEM pSelf = hb_clsInst( usClassH ); if( pSelf ) hb_itemReturnRelease( pSelf ); } #ifdef HB_LEGACY_LEVEL2 /* * __CLS_PARAM() and __CLS_PAR00() functions are only for backward binary * compatibility. They will be removed in the future so please do not use * them. */ HB_FUNC( __CLS_PARAM ) { HB_STACK_TLS_PRELOAD PHB_ITEM array; USHORT uiParam = ( USHORT ) hb_pcount(); USHORT n; if( uiParam >= 1 ) { array = hb_itemArrayNew( uiParam ); for( n = 1; n <= uiParam; n++ ) hb_arraySet( array, n, hb_param( n, HB_IT_ANY ) ); } else { array = hb_itemArrayNew( 1 ); hb_arraySetC( array, 1, "HBObject" ); } hb_itemReturnRelease( array ); } HB_FUNC( __CLS_PAR00 ) { HB_STACK_TLS_PRELOAD PHB_ITEM array; USHORT uiParam = ( USHORT ) hb_pcount(); USHORT n; array = hb_itemArrayNew( uiParam ); for( n = 1; n <= uiParam; n++ ) hb_arraySet( array, n, hb_param( n, HB_IT_ANY ) ); hb_itemReturnRelease( array ); } /* * This function is only for backward binary compatibility * It will be removed in the future so please do not use it. * Use hb_objHasMessage() instead. */ #if defined(__cplusplus) extern "C" BOOL hb_objGetpMethod( PHB_ITEM pObject, PHB_SYMB pMessage ); #endif BOOL hb_objGetpMethod( PHB_ITEM pObject, PHB_SYMB pMessage ) { return hb_objHasMessage( pObject, pMessage->pDynSym ); } #endif #if 0 /* * return real function name ignoring aliasing */ const char * hb_clsRealMethodName( void ) { LONG lOffset = hb_stackBaseProcOffset( 1 ); const char * szName = NULL; if( lOffset > 0 ) { PHB_STACK_STATE pStack = hb_stackItem( lOffset )->item.asSymbol.stackstate; if( pStack->uiClass && pStack->uiClass <= s_uiClasses ) { PCLASS pClass = s_pClasses[ pStack->uiClass ]; if( ( ULONG ) pStack->uiMethod < hb_clsMthNum( pClass ) ) { PMETHOD pMethod = pClass->pMethods + pStack->uiMethod; if( pMethod->pMessage ) szName = pMethod->pMessage->pSymbol->szName; } } } return szName; } #endif