266 lines
7.9 KiB
Plaintext
266 lines
7.9 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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* Base Class
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*
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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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*
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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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*
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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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*
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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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*
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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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*/
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/*
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* The following parts are Copyright of the individual authors.
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* www - http://www.harbour-project.org
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*
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* 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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*
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* See doc/license.txt for licensing terms.
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*
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*/
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// Harbour Class TClass to build classes
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#include "common.ch"
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#include "hboo.ch"
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//----------------------------------------------------------------------------//
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FUNCTION TClass()
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STATIC s_hClass := nil
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if s_hClass == nil
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s_hClass := __clsNew( "TCLASS", 10 )
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__clsAddMsg( s_hClass, "New", @New(), MET_METHOD )
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__clsAddMsg( s_hClass, "Create", @Create(), MET_METHOD )
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__clsAddMsg( s_hClass, "AddData", @AddData(), MET_METHOD )
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__clsAddMsg( s_hClass, "AddClassData", @AddClassData(), MET_METHOD )
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__clsAddMsg( s_hClass, "AddInline", @AddInline(), MET_METHOD )
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__clsAddMsg( s_hClass, "AddMethod", @AddMethod(), MET_METHOD )
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__clsAddMsg( s_hClass, "AddVirtual", @AddVirtual(), MET_METHOD )
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__clsAddMsg( s_hClass, "Instance", @Instance(), MET_METHOD )
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__clsAddMsg( s_hClass, "SetInit", @SetInit(), MET_METHOD )
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__clsAddMsg( s_hClass, "SetType", @SetType(), MET_METHOD )
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__clsAddMsg( s_hClass, "hClass", 1, MET_DATA )
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__clsAddMsg( s_hClass, "_hClass", 1, MET_DATA )
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__clsAddMsg( s_hClass, "cName", 2, MET_DATA )
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__clsAddMsg( s_hClass, "_cName", 2, MET_DATA )
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__clsAddMsg( s_hClass, "aDatas", 3, MET_DATA )
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__clsAddMsg( s_hClass, "_aDatas", 3, MET_DATA )
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__clsAddMsg( s_hClass, "aMethods", 4, MET_DATA )
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__clsAddMsg( s_hClass, "_aMethods", 4, MET_DATA )
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__clsAddMsg( s_hClass, "aClsDatas", 5, MET_DATA )
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__clsAddMsg( s_hClass, "_aClsDatas", 5, MET_DATA )
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__clsAddMsg( s_hClass, "aInlines", 6, MET_DATA )
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__clsAddMsg( s_hClass, "_aInlines", 6, MET_DATA )
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__clsAddMsg( s_hClass, "aVirtuals", 7, MET_DATA )
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__clsAddMsg( s_hClass, "_aVirtuals", 7, MET_DATA )
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__clsAddMsg( s_hClass, "cSuper", 8, MET_DATA )
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__clsAddMsg( s_hClass, "_cSuper", 8, MET_DATA )
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__clsAddMsg( s_hClass, "uInit", 9, MET_DATA )
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__clsAddMsg( s_hClass, "_uInit", 9, MET_DATA )
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__clsAddMsg( s_hClass, "cType", 10, MET_DATA )
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__clsAddMsg( s_hClass, "_cType", 10, MET_DATA )
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endif
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return __clsInst( s_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 ISCHARACTER( cSuper )
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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,;
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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 ][ CLASSDATA_SYMBOL ], n + nClassBegin,;
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MET_CLASSDATA, ::aClsDatas[ n ][ CLASSDATA_VALUE ] )
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__clsAddMsg( hClass, "_" + ::aClsDatas[ n ][ CLASSDATA_SYMBOL ],;
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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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if ::uInit != nil
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xInit := ::uInit
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endif
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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, xInit )
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local Self := QSelf()
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if ::uInit != nil
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xInit := ::uInit
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endif
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AAdd( ::aClsDatas, { cData, xInit } )
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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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static function SetInit( uValue )
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local Self := QSelf()
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::uInit := uValue
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return nil
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//----------------------------------------------------------------------------//
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static function SetType( cType )
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local Self := QSelf()
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::cType := cType
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return nil
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//----------------------------------------------------------------------------//
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