227 lines
6.8 KiB
Plaintext
227 lines
6.8 KiB
Plaintext
/*
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* $Id$
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*/
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/*
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Harbour Project source code
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Harbour Base Class
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Copyright 1999 Antonio Linares <alinares@fivetech.com>
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www - http://www.harbour-project.org
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version, with one exception:
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The exception is that if you link the Harbour Runtime Library (HRL)
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and/or the Harbour Virtual Machine (HVM) with other files to produce
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an executable, this does not by itself cause the resulting executable
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to be covered by the GNU General Public License. Your use of that
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executable is in no way restricted on account of linking the HRL
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and/or HVM code into it.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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their web site at http://www.gnu.org/).
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*/
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/* Harbour Project source code
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http://www.Harbour-Project.org/
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The following functions are Copyright 1999 Eddie Runia <eddie@runia.com>:
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Support for inheritance
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Support for default DATA values
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See doc/hdr_tpl.txt, Version 1.2 or later, for licensing terms.
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*/
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// Harbour Class TClass to build classes
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#include "hboo.ch"
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//----------------------------------------------------------------------------//
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function TClass()
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static hClass := 0
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if hClass == 0
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hClass = __clsNew( "TCLASS", 8 )
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__clsAddMsg( hClass, "New", @New(), MET_METHOD )
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__clsAddMsg( hClass, "Create", @Create(), MET_METHOD )
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__clsAddMsg( hClass, "AddData", @AddData(), MET_METHOD )
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__clsAddMsg( hClass, "AddClassData", @AddClassData(), MET_METHOD )
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__clsAddMsg( hClass, "AddInline", @AddInline(), MET_METHOD )
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__clsAddMsg( hClass, "AddMethod", @AddMethod(), MET_METHOD )
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__clsAddMsg( hClass, "AddVirtual", @AddVirtual(), MET_METHOD )
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__clsAddMsg( hClass, "Instance", @Instance(), MET_METHOD )
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__clsAddMsg( hClass, "hClass", 1, MET_DATA )
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__clsAddMsg( hClass, "_hClass", 1, MET_DATA )
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__clsAddMsg( hClass, "cName", 2, MET_DATA )
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__clsAddMsg( hClass, "_cName", 2, MET_DATA )
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__clsAddMsg( hClass, "aDatas", 3, MET_DATA )
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__clsAddMsg( hClass, "_aDatas", 3, MET_DATA )
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__clsAddMsg( hClass, "aMethods", 4, MET_DATA )
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__clsAddMsg( hClass, "_aMethods", 4, MET_DATA )
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__clsAddMsg( hClass, "aClsDatas", 5, MET_DATA )
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__clsAddMsg( hClass, "_aClsDatas", 5, MET_DATA )
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__clsAddMsg( hClass, "aInlines", 6, MET_DATA )
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__clsAddMsg( hClass, "_aInlines", 6, MET_DATA )
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__clsAddMsg( hClass, "aVirtuals", 7, MET_DATA )
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__clsAddMsg( hClass, "_aVirtuals", 7, MET_DATA )
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__clsAddMsg( hClass, "cSuper", 8, MET_DATA )
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__clsAddMsg( hClass, "_cSuper", 8, MET_DATA )
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endif
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return __clsInst( hClass )
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//----------------------------------------------------------------------------//
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static function New( cClassName, cSuper )
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local Self := QSelf()
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::cName = Upper( cClassName )
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::aDatas = {}
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::aMethods = {}
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::aClsDatas = {}
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::aInlines = {}
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::aVirtuals = {}
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if ValType( cSuper ) == "C"
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::cSuper = cSuper
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endif
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return Self
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//----------------------------------------------------------------------------//
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static function Create()
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local Self := QSelf()
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local n
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local nLen
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local nLenDatas := Len( ::aDatas )
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local nDataBegin := 0
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local nClassBegin := 0
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local hClass
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local hSuper
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local ahSuper := {}
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if ::cSuper == NIL
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hClass := __clsNew( ::cName, nLenDatas )
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else // Single inheritance
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hSuper := __clsInstSuper( Upper( ::cSuper ) )
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hClass := __clsNew( ::cName, nLenDatas, hSuper )
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// Add class casts
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__clsAddMsg( hClass, Upper( ::cSuper ), hSuper, MET_SUPER )
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__clsAddMsg( hClass, "__SUPER", hSuper, MET_SUPER )
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nDataBegin := __cls_CntData( hSuper ) // Get offset for new DATAs
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nClassBegin := __cls_CntClsData( hSuper ) // Get offset for new ClassData
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endif
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::hClass = hClass
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for n = 1 to nLenDatas
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__clsAddMsg( hClass, ::aDatas[ n ][ DATA_SYMBOL ], n + nDataBegin, MET_DATA, ;
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::aDatas[ n ][ DATA_VALUE ] )
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__clsAddMsg( hClass, "_" + ::aDatas[ n ][ DATA_SYMBOL ], n + nDataBegin, MET_DATA )
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next
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nLen = Len( ::aMethods )
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for n = 1 to nLen
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__clsAddMsg( hClass, ::aMethods[ n ][ 1 ], ::aMethods[ n ][ 2 ], MET_METHOD )
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next
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nLen = Len( ::aClsDatas )
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for n = 1 to nLen
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__clsAddMsg( hClass, ::aClsDatas[ n ], n + nClassBegin, MET_CLASSDATA )
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__clsAddMsg( hClass, "_" + ::aClsDatas[ n ], n + nClassBegin, MET_CLASSDATA )
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next
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nLen = Len( ::aInlines )
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for n = 1 to nLen
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__clsAddMsg( hClass, ::aInlines[ n ][ 1 ], ::aInlines[ n ][ 2 ],;
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MET_INLINE )
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next
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// __clsAddMsg( hClass, Upper( ::cName ), {|self|self}, MET_INLINE ) // Useful?
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nLen = Len( ::aVirtuals )
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for n = 1 to nLen
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__clsAddMsg( hClass, ::aVirtuals[ n ], n, MET_VIRTUAL )
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next
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return nil
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//----------------------------------------------------------------------------//
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static function Instance()
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local Self := QSelf()
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return __clsInst( ::hClass )
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//----------------------------------------------------------------------------//
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static function AddData( cData, xInit ) /* xInit is initializer */
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local Self := QSelf()
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AAdd( ::aDatas, { cData, xInit } )
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return nil
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//----------------------------------------------------------------------------//
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static function AddClassData( cData )
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local Self := QSelf()
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AAdd( ::aClsDatas, cData )
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return nil
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//----------------------------------------------------------------------------//
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static function AddInline( cMethod, bCode )
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local Self := QSelf()
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AAdd( ::aInlines, { cMethod, bCode } )
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return nil
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//----------------------------------------------------------------------------//
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static function AddMethod( cMethod, nFuncPtr )
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local Self := QSelf()
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AAdd( ::aMethods, { cMethod, nFuncPtr } )
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return nil
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//----------------------------------------------------------------------------//
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static function AddVirtual( cMethod )
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local Self := QSelf()
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AAdd( ::aVirtuals, cMethod )
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return nil
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//----------------------------------------------------------------------------//
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