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harbour-core/harbour/source/vm/classes.c
Przemyslaw Czerpak 64f97582d9 2008-09-13 18:49 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/include/hbpp.h
  * harbour/include/hbvm.h
  * harbour/include/hbcomp.h
  * harbour/include/hbcompdf.h
  * harbour/include/hbtrace.h
  * harbour/include/hbapilng.h
  * harbour/include/hbinit.h
  * harbour/source/rtl/langapi.c
  * harbour/source/pp/ppcore.c
  * harbour/source/pp/hbpp.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/hvm.c
  * harbour/source/common/hbver.c
  * harbour/source/common/hbtrace.c
  * harbour/source/common/expropt2.c
  * harbour/source/compiler/complex.c
  * harbour/source/compiler/hbident.c
  * harbour/source/compiler/hbfunchk.c
    * changed some declarations from 'char *' to 'const char *' and
      fixed casting for some more pedantic compilers

  * harbour/source/pp/ppcore.c
    ! fixed one typo which could cause memory leak and even GPF

  * harbour/common.mak
  * harbour/source/vm/Makefile
  * harbour/source/rtl/Makefile
  - harbour/source/rtl/set.c
  + harbour/source/vm/set.c
  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
    * moved from RTL to HVM
    * eliminated hb_set global structure
    * moved set structure to HVM stack
    + added internal function hb_setClone() which is used to create
      copy of SET structure for child threads
    * hidden HB_SET_STRUCT declaration - 3-rd part code must not access it
      directly. Dedicated hb_set*() functions should be used instead.
    + added new function:
         BOOL hb_setSetItem( HB_set_enum set_specifier, PHB_ITEM pItem )
      which allow to change some set by 3-rd party code.
      TODO: not all SETs can be changed yet - if someone have a while
            then please add code for missing ones.

  * harbour/include/set.ch
  * harbour/include/hbset.h
    + added _SET_CODEPAGE which works like _SET_LANGUAGE giving common
      interface

  * harbour/include/hbsetup.h
    + added HB_CODEPAGE_DEFAULT which works like HB_LANG_DEFAULT

  * harbour/source/vm/hvm.c
    ! fixed builds which uses non EN lang or code page modules
      by forcing linking the chosen ones

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/include/hbapicdp.h
  * harbour/source/rtl/cdpapi.c
    - removed global code page variable: hb_cdp_page and moved
      code page settings to HVM stack
    + added new function hb_cdpID() which returns current code page
      character ID
    + added new functions hb_vmCDP() and hb_vmSetCDP() to get/set
      active for given thread code page structure

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/include/hbapilng.h
  * harbour/source/rtl/langapi.c
    + moved lang setting to HVM stack
    + added new functions hb_vmLang() and hb_vmSetLang() to get/set
      active for given thread language module

  * harbour/include/hbvmpub.h
  * harbour/include/hbstack.h
  * harbour/include/hbapi.h
  * harbour/source/vm/estack.c
  * harbour/source/vm/dynsym.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/memvars.c
    * changed memvar handles for HB_HANDLE to void * which is directly
      casted to PHB_ITEM - new memvar references
    * changed HB_DYNS declarations for MT mode. In MT mode HB_DYNS does
      not contain area and memvar handles which are moved to thread
      local HVM stack
    + added array for thread local memvar and area handles to HVM stack
    % eliminated global continues array with all memvars and detached locals
    % changed HB_IT_MEMVAR to use pointers to HB_ITEM directly - it resolve
      synchronization problems in MT mode and should also improve the speed
      and reduce memory usage. It should be well visible in applications which
      uses lot of detached locals.
    - removed hb_memvarsInit() and hb_memvarsFree() - they are not necessary
      now because we do not longer use array with all allocated memvars
      and detached local and private stack initialization is made
      automatically
    + added internal functions hb_dynsymGetMemvar()/hb_dynsymSetMemvar()
    + added hb_memvarGetValueBySym() for debugger
    * moved PRIVATE variable stack to HVM stack
    * eliminated all static variables in memvars module

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/source/rtl/fserror.c
    * moved IO errors to HVM stack
    + added special IO error handling which works without HVM stack
      It allows to use hb_fs*() functions without allocated stack
      by 3-rd party threads.

  * harbour/source/rtl/filesys.c
    * moved hb_fsCurDir() to HVM stack with special handling to work
      with HVM stack like IO errors

  * harbour/source/rdd/workarea.c
    * allocated RDD node array in bigger peaces to reduce later RT
      reallocations in MT mode. If user want to add dynamically more
      then 64 RDDs then it should synchronize this operation himself.

  * harbour/source/rdd/wacore.c
    * moved WA list, current WA, default RDD and neteer() flag to HVM stack

  * harbour/include/hbdefs.h
    - removed HB_HANDLE declaration

  * harbour/include/hbapi.h
    - removed HB_VALUE structure - it's not longer used due to different
      memvar handling
    * updated hb_struMemvar to new memvar handling
    * replaced hb_vmIsLocalRef() and hb_memvarsIsMemvarRef() with
      hb_vmIsStackRef() which respect multiple stack and new memvar
      and static structures and location in GC mark pass.

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
  * harbour/source/vm/hvm.c
    + added support for thread specific data located on HVM stack
      Now it's possible to allocate static variables which are
      local to thread. Such variables are allocated on HVM stack
      and automatically destroyed. To declare new TSD variable use:
         HB_TSD_NEW( <name>, <size>, <init>, <destruct> )
      <name> - name of variable which holds TSD handler
      <size> - size of TSD are which has to be allocated
      <init> - init function, executed when new TSD is allocated by thread
               (thread access given TSD 1-st time). This function receives
               void * pointer to allocated area.
      <destruct> - destructor function executed when HVM stack is destroyed
      f.e.:
         static HB_TSD_NEW( s_scrData, sizeof( HB_SCRDATA ),
                            NULL, hb_xSaveRestRelease );
      To initialize dynamically allocated TSD variable use:
         HB_TSD_INIT( <name>, <size>, <init>, <destruct> )
      Pointer to TSD can be accessed using hb_stackGetTSD( &<name> )
      where <name> is name of variable which holds TSD handler, f.e.:
         PHB_SCRDATA pScrData = ( PHB_SCRDATA ) hb_stackGetTSD( &s_scrData );
      See source/rtl/xsavescr.c as an example
      It's also possible to test if data has been already allocated for
      current thread by:
         hb_stackTestTSD( &<name> ) => pData
      it works like hb_stackGetTSD() but return NULL if current thread data
      has not been allocated yet.

  * harbour/include/hbstack.h
  * harbour/source/vm/estack.c
    * changed hb_stack location to thread local storage in MT mode
    + added functions and macros to access/assign new HVM stack members
    + changed garbage collection mark functions to work with multiple
      stacks, thread local static and memvar variables

  * harbour/source/rtl/xsavescr.c
    * use TSD data for screen buffer to make __XSAVESCREEN()/__XRESTSCREEN()
      thread independent

  * harbour/source/rtl/idle.c
    * use TSD data for idle task settings and codeblocks
    - removed hb_idleShutDown() - it's not longer necessary

  * harbour/source/rtl/setkey.c
    * use TSD data for allocated keys to make SETKEY() thread independent

  * harbour/source/rtl/math.c
    * moved math error handler, math error block, math error mode and
      math error structure to TSD

  * harbour/source/rtl/errorapi.c
    * moved error handler, error block, error launch counter and DOS error
      value to TSD

  * harbour/source/rtl/inkey.c
    * moved inkey "before" and "after" blocks to TSD

  * harbour/source/rdd/hsx/hsx.c
    * moved HSX handles array to TSD

  * harbour/include/hbapigt.h
  * harbour/source/rtl/console.c
    - removed hb_setkeyInit() and hb_setkeyExit() - they are not longer
      necessary, allocated resources will be freed by TSD destructor
      function

  * harbour/include/hbapi.h
  * harbour/source/rtl/console.c
    * removed hb_conXSaveRestRelease() - it's not longer necessary,
      allocated resources will be freed by TSD destructor function

  * harbour/source/vm/macro.c
    * moved s_macroFlags to TSD

  * harbour/source/rtl/accept.c
    * moved accept buffer to TSD

  * harbour/include/hbcomp.h
  * harbour/include/hbcompdf.h
  * harbour/include/hbxvm.h
  * harbour/source/compiler/hbmain.c
  * harbour/source/compiler/hbfix.c
  * harbour/source/compiler/hbpcode.c
  * harbour/source/compiler/hbdead.c
  * harbour/source/compiler/complex.c
  * harbour/source/compiler/genc.c
  * harbour/source/compiler/gencc.c
  * harbour/source/compiler/hbopt.c
  * harbour/source/compiler/hblbl.c
  * harbour/source/compiler/hbstripl.c
  * harbour/source/compiler/harbour.y
  * harbour/source/compiler/harbour.yyc
  * harbour/source/compiler/harbour.yyh
  * harbour/source/vm/hvm.c
    + added new PCODE HB_P_THREADSTATICS
    + added support for static variables which are local to thread:
         THREAD STATIC <varname [:= <exp>], ...>
      They work like normal static variables but each thread operates
      on its own copy.
    * added protection against possible double call to hb_xfree()
      It can happen due to wrong marking expressions as used by bison
      and executing destructors after our free code when syntax error
      appear.

  * harbour/source/rtl/perfuncs.prg
  * harbour/source/rtl/menuto.prg
  * harbour/source/rtl/getlist.prg
  * harbour/source/rtl/readvar.prg
  * harbour/source/rtl/text.prg
    * use THREAD STATIC variables to make above code MT safe

  * harbour/include/hbgtcore.h
  * harbour/source/rtl/hbgtcore.c
    + added hb_gt_BaseFree() which will release current GT pointer
      locked by hb_gt_Base() function. This function will be used
      to optional automatic GT access synchronization when threads
      share the same GT.

  * harbour/source/rtl/gtapi.c
  * harbour/source/rtl/inkeyapi.c
  * harbour/source/rtl/mouseapi.c
  * harbour/contrib/hbct/ctwin.c
    * free GT pointer by hb_gt_BaseFree()
      TODO: CTWIN is not MT safe yet - it will be updated together
            with core GT when we add multi window interface for
            thread with own console window.

  * harbour/bin/hb-func.sh
  * harbour/config/linux/gcc.cf
    + added rt lib to Linux builds

  * harbour/bin/postinst.sh
    * create MT safe version of FM stat library: fmmt

  * harbour/bin/pack_src.sh
    + added support for ZIP packing

  * harbour/include/hbapi.h
  * harbour/include/hbvm.h
  * harbour/source/vm/hvm.c
    + added hb_vmThreadInit()/hb_vmThreadQuit() functions - they initialize
      HVM for calling thread so it can execute .prg code and call HVM
      functions. They can be used by 3-rd party code threads.
    + added hb_vmUnlock()/hb_vmLock() functions which informs that
      thread will not operate on HVM structures for some time allowing
      to execute single thread only processes like GC.
    + added hb_vmThreadQuitRequest() which sends stop request to given
       thread
    + added hb_vmWaitForThreads() which stops main thread execution waiting
      for other threads
    + added hb_vmSuspendThreads() and hb_vmResumeThreads() used be GC
      to stop all HVM threads before mark/swap scan
    + added linked list of HVM stacks
    + added hb_vmTerminateThreads() used by main HVM thread in QUIT state
    * moved EXIT procedures execution from QUIT request to HVM QUIT state
      in MT mode. It may effects some non structural code which tries to
      access private variables in EXIT functions but it's much cleaner
      and understandable for user. Please remember that we guaranties
      that ALWAYS code in BEGIN SEQUENCE is _always_ executed even after
      HVM QUIT request just like destructs. Personally I think that we
      should move EXIT procedures execution also in ST mode.
    * changed startup and cleanup code for new internal structures
    * changes startup and cleanup code for MT mode
    % removed some redundant HB_ITEM type settings
    ! eliminated non MT safe code which was using reference counters
      without protection

  * harbour/common.mak
  * harbour/source/vm/Makefile
  + harbour/include/hbthread.h
  + harbour/source/vm/thread.c
    + added C level functions to manage threads and synchronization objects
      See hbthread.h for detail description. They are based on PTHREAD API
      and PTHREAD documentation can be used as reference. I intentionally
      keep this list small for easier multiplatform porting.
      Now they have been implemented for PTHREADS (POSIX threads supported by
      many different OSes), MS-Win32/64 and OS2. The OS2 version is not tested
      at all. I do not even know if it can be compiled so please make tests.
      I used Internet resources and some part of xHarbour code as documentation
      for OS2 MT API. It should be quite easy to add other platforms if necessary.
      Harbour core code needs non recursive mutexes, conditional variables and
      TLS for one pointer. If platforms does not support conditional variables
      (f.e. MS-Win or OS2) then they can be emulated using multistate semaphores.
    + added .prg functions to manage threads and synchronization objects:
         hb_threadStart( <@sStart()> | <bStart> [, <params,...> ] ) -> <pThID>
         hb_threadJoin( <pThID> [, @<xRetCode> ] ) -> <lOK>
         hb_threadDetach( <pThID> ) -> <lOK>
         hb_threadQuitRequest( <pThID> ) -> <lOK>
         hb_threadWaitForAll() -> NIL
         hb_mutexCreate() -> <pMtx>
         hb_mutexLock( <pMtx> [, <nTimeOut> ] ) -> <lLocked>
         hb_mutexUnlock( <pMtx> ) -> <lOK>
         hb_mutexNotify( <pMtx> [, <xVal>] ) -> NIL
         hb_mutexNotifyAll( <pMtx> [, <xVal>] ) -> NIL
         hb_mutexSubscribe( <pMtx>, [ <nTimeOut> ] [, @<xSubscribed> ] ) -> <lSubscribed>
         hb_mutexSubscribeNow( <pMtx>, [ <nTimeOut> ] [, @<xSubscribed> ] ) -> <lSubscribed>
      The function list should give similar to xHarbour API but they are not exactly
      the same and except of hb_mutex*() functions which should replicate xHarbour behavior.

  + harbour/source/vm/vmmt
  + harbour/source/vm/vmmt/Makefile
    + added hbvmmt library to GNU make builds.
      Non GNU make builds should be updated.

  * harbour/contrib/hbct/pos1.c
  * harbour/contrib/gtwvg/gtwvg.c
  * harbour/contrib/rddads/ads1.c
  * harbour/contrib/hbmisc/spd.c
  * harbour/contrib/hbbmcdx/bmdbfcdx.c
  * harbour/contrib/examples/rdddbt/dbfdbt1.c
  * harbour/source/vm/runner.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/hvm.c
  * harbour/source/rtl/console.c
  * harbour/source/rtl/strcase.c
  * harbour/source/rtl/spfiles.c
  * harbour/source/rtl/defpath.c
  * harbour/source/rtl/hbgtcore.c
  * harbour/source/rtl/dateshb.c
  * harbour/source/rtl/mlcfunc.c
  * harbour/source/rtl/fstemp.c
  * harbour/source/rtl/is.c
  * harbour/source/rtl/setcolor.c
  * harbour/source/rtl/errorint.c
  * harbour/source/rtl/transfrm.c
  * harbour/source/rtl/dates.c
  * harbour/source/rtl/filesys.c
  * harbour/source/rtl/gtdos/gtdos.c
  * harbour/source/rtl/gtwin/gtwin.c
  * harbour/source/rtl/gtwvt/gtwvt.c
  * harbour/source/rtl/gtxwc/gtxwc.c
  * harbour/source/rtl/gttrm/gttrm.c
  * harbour/source/rtl/gtpca/gtpca.c
  * harbour/source/rtl/gtcgi/gtcgi.c
  * harbour/source/rtl/gtcrs/gtcrs.c
  * harbour/source/rtl/gtstd/gtstd.c
  * harbour/source/rtl/gtsln/gtsln.c
  * harbour/source/rtl/gtsln/gtsln.h
  * harbour/source/rdd/dbf1.c
  * harbour/source/rdd/sdf1.c
  * harbour/source/rdd/delim1.c
  * harbour/source/rdd/dbcmd.c
  * harbour/source/rdd/hbdbsort.c
  * harbour/source/rdd/workarea.c
  * harbour/source/rdd/dbffpt/dbffpt1.c
  * harbour/source/rdd/dbfcdx/dbfcdx1.c
  * harbour/source/rdd/dbfntx/dbfntx1.c
  * harbour/source/rdd/hsx/hsx.c
  * harbour/source/rdd/hbsix/sxfname.c
    * use API functions instead of direct accessing to hb_cdp_page or hb_set

  * harbour/source/rtl/fstemp.c
  * harbour/source/rtl/fssize.c
  * harbour/source/rtl/hbffind.c
  * harbour/source/rtl/filesys.c
    * encapsulate potentially slow IO operation inside
      hb_vmUnlock()/hb_vmLock() calls to allow other thread GC
      activation

  * harbour/contrib/hbnf/fttext.c
    ! fixed casting

  * harbour/contrib/gtwvg/gtwvg.h
    - removed #include <comctl32.h> - my MinGW and MinGW/CE instalations do
      not have them. If it exists in some newer ones then it has to be
      covered by #if version checking.

  * harbour/source/vm/dynsym.c
    - removed hb_dynsymLog() and hb_dynsymMemvarHandle()
    * modified code to be MT safe and improved speed of some operations
    * added MUEXT protection for global dynamic table access

  * harbour/include/hbapi.h
  * harbour/source/vm/garbage.c
    * changed to work with MT HVM
    * changed to work with new memvar structures and thread local static and
      memvar variables
    * added MUEXT protection for linked block lists
    + added parameter to hb_gcCollectAll() which will force GC activation
      in MT mode by temporary suspending all executed threads.
    + added logical parameter to HB_GCALL() functions which is passed to
      hb_gcCollectAll()

  * harbour/source/vm/fm.c
    * added MUEXT protection for FM statistic module
    * added MT protection for reference counters. For platforms
      which supports atomic incrmenetation/decrementation (f.e.
      Interlocked*() functions in MS-Win) such operations are
      used. For other it's MUTEX protection. It gives MT safe
      readonly access for HVM complex variables without user
      synchronization. The MUTEX protection can cause some speed
      overhead so it's good to define MT safe version of
      HB_ATOM_INC()/HB_ATOM_DEC() in hbthread.h if given platform
      has them. Now they are defined only for Windows. For other
      platforms We can define can define them in assembler for some
      most popular CPUs in the future.

  * harbour/source/vm/classes.c
    * changed class definition array. Now it keeps pointers to class
      structures.
    * In MT mode allocated at HVM startup big enough array for class
      definitions to avoid later RT reallocations. It effectively eliminates
      MUTEX synchronization for class structure access.
    * protect by MUTEX code for new class creation

  * harbour/source/debug/dbgentry.c
    * eliminated hbvmopt.h and direct accessing to HVM structures

  * harbour/source/rtl/gtclip.c
    * protect with MUTEX access to internal clipboard data

  * harbour/source/rdd/nulsys/nulsys.c
    + added hb_rddCloseAll()

  + harbour/tests/mt
  + harbour/tests/mt/mttest01.prg
  + harbour/tests/mt/mttest02.prg
  + harbour/tests/mt/mttest03.prg
  + harbour/tests/mt/mttest04.prg
  + harbour/tests/mt/mttest05.prg
  + harbour/tests/mt/mttest06.prg
  + harbour/tests/mt/mttest07.prg
    + added some demonstration/test small MT programs written
      using Harbour language. Some of them can be also compiled
      by xHarbour but xHarbour does not pass any of my tests in
      real multi-CPU machine so do not expect they will work
      correctly.

   Harbour threads needs OS threads support. Each Harbour thread is directly
   mapped to OS thread. It's not very efficient on some older system where
   cost of thread creation and/or task switching is very expensive but it
   should not be bigger problem for modern OS-es which can support threads
   in practice nearly in user space only.
   I haven't touched Harbour function calling convention which comes from
   Clipper. It means that we do not pass pointer to VM to each functions
   like CLIP or xBase++. To resolve the problem I have to use thread local
   storage (TLS) where such pointer is kept. If platform does not support
   TLS then it can be emulated by us. Anyhow the speed of accessing TLS
   data and extracting HB_STACK poitner is critical for performance.
   Some compilers depending on used hardware and OS give native support
   for TLS (f.e. __thread keyword in GCC/BCC or __declspec( thread ) in MSVC).
   This should give optimal performance. On other Harbour uses TLS functions
   like TlsGetValue() (MS-WIN) or pthread_getspecific() (PTHREAD) are used.
   OS2 gives quite interesting TLS functionality which seems to be quite fast
   though it will be interesting to know how it is iplemented internally for
   real multi CPU machines (if it depends on CPU exception then the
   performance will be bad). We need TLS only for one pointer to HB_STACK
   structure.
   I haven't added any tricks like HB_THREAD_STUB in xHarbour to reduce
   the cost of TLS access. If it will be necessary for some platform the we
   can add it.
   Except TLS Harbour threads needs OS support for non recursive mutexes or
   critical sections and conditional variables. If platforms does not support
   conditional variables (f.e. MS-Win or OS2) then they can be emulated using
   multistate semaphores. I intentionally didn't create code which may need
   recursive mutexes. The non recursive ones are often faster and some
   platforms may not support recursive mutexes so they will have to be
   emulated by us.
   Harbour uses reference counters for complex variables. It means that even
   readonly access to complex item causes internal write operations necessary
   to increment/decrement its reference counter. To make such readonly access
   MT safe we have to make incrementation and decrementation with result
   checking atomic. By default it's done by mutex inside vm/fm.c but some
   platforms have native support for atomic inc/dec operations, f.e. 
   Interlocked*() functions in MS-Win. If they are available then such
   functions should be used to not reduce the performance by mutex call
   very often used functions. For many CPUs it should be quite easy to
   implement such atomic inc/dec functionality in assembler. F.e. for
   GCC and x86@32 it may looks like:

      static __inline__ void hb_atomic_inc32( volatile int * p )
      {
         __asm__ __volatile__(
            "lock incl %0"
            :"=m" (*p) :"m" (*p)
         );
      }

      static __inline__ int hb_atomic_dec32( volatile int * p )
      {
         unsigned char c;
         __asm__ __volatile__(
            "lock decl %0"
            "sete %1"
            :"=m" (*p), "=qm" (c) :"m" (*p) : "memory"
         );
         return c == 0;
      }

   and then it's enough to define in hbthreads.h:
      #define HB_ATOM_INC( p )    hb_atomic_inc32( ( volatile int * ) p )
      #define HB_ATOM_DEC( p )    hb_atomic_dec32( ( volatile int * ) p )

   Probably I'll make it for some most popular CPUs in the future.
   In Harbour each thread which wants to call HVM functions have to allocate
   it's own HVM stack. It's done hb_vmThreadInit(). The HVM stack is freed
   by calling hb_vmThreadQuit(). This functions can be called also by 3-rd
   party threads if they want to call HVM functions or execute .prg code.
   Calling HVM functions without allocated stack will cause GPF.
   I moved most of static variables to HVM stack to make them thread
   local. But some of them like FS errors have their own alternative
   copy which is used when thread does not allocate HVM stack. It allows
   to use hb_fs*() functions without HVM stack but programmer have to
   know that error codes return by hb_fs*Error() functions can be
   overwritten by other threads which also didn't allocated HVM stack.
   To execute garbage collector scan and mark pass it's necessary to
   stop other HVM threads. Otherwise the scan may give false results.
   It's also possible to not stop threads but protect with mutex all
   operations on GC items but it will probably cause performance reduction
   and will force some other modifications. Maybe I'll implement it
   in the future.
   I didn't use any OS level thread KILL or CANCEL calls. All HVM threads
   have to be cleanly removed without any resource leaks.
   QUIT command terminate only calling thread. If main (startup) HVM
   thread call QUIT then it sends QUIT request to all existing threads.
   In QUIT state ALWAYS statements and destructors are executed.
   New thread is created by:
      hb_threadStart( <@sStart()> | <bStart> [, <params,...> ] ) -> <pThID>
   The returned value is a pointer to internal thread structure which
   can be used in JOIN or DETACH operations. Each thread should be Joined
   or DETACHED to avoid resource leaks. If programmer does not store
   <pThID> or all instances of <pThID> are destroyed then thread is
   automatically detached. I do not know clear method of thread detaching
   in OS2. If some OS2 users knows it then plase update vm/hbthread.c.
   When thread terminates then all locked by this thread mutexes are
   released.
   Each thread uses its own memvars (PRIVATEs and PUBLICs) and work areas.
   When new thread is created then it inherits from parent thread:
      - code page
      - language
      - SETs
      - default RDD
   error block is initialized to default value by calling ERRORSYS()
   and PUBLIC variable GetList := {} is created.
   The following objects are initialized to default value:
         - error block
         - math error handler and math error block
         - macro compiler features setting (hb_setMacro())
           or move them to SETs.
   We can think about inheriting them. It's also possible to add
   inheriting of all visible memvars but I do not know it's good
   idea.

   Compilation and linking:
   For MT mode HVM library should be compiled with HB_MT_VM macro.
   GNU make automatically creates hbvmmt library which should be
   linked with Harbour MT programs instead of hbvm.
   Non GNU make files should be updated.
   If given compiler support TLS then you can try to set HB_USE_TLS
   to force using native compiler TLS support. Now it's enabled by
   default only for BCC. For Linux and GCC builds it may depend also
   on used GLIBC version. In older system there is no TLS support
   at all or TLS works only for shared binaries so I haven't enabled
   it. If you will test some other compiler then please add default
   native TLS support for them in hbthread.h
   Users using hb* scripts can simply use -mt switch when they want
   to create MT program, f.e.:
      hbmk -n -w3 -es2 -mt mttest01.prg

   There are still some minor things which should be done but I'll
   do them later. Current state seems to be fully functional.
   The most important and still missing is our own file lock server
   for RDD synchronization in POSIX systems. Kernel internally
   recognize POSIX locks by PID and file i-node - not PID and file
   handle. It means that the same file open more then once by one
   process shares locks. Because POSIX locks can be overwritten
   then we do not have any synchronization between aliased workareas
   or threads using the same table in *nixes. We have to make
   synchronization ourselves. I'll create such lock server ASAP.

   Please test and enjoy using Harbour threads.
2008-09-13 16:53:45 +00:00

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