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harbour-core/harbour/source/rtl/array.prg
2004-07-27 09:44:06 +00:00

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/*
* $Id$
*/
/*
* Harbour Project source code:
* Harbour implementation of Class(y) Class Array
*
* Copyright 2004 Antonio Linares <alinares@fivetechsoft.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.
*
*/
#include "hbclass.ch"
CLASS Array FROM ScalarObject FUNCTION _Array
METHOD Init()
METHOD AsString()
MESSAGE At METHOD AtIndex // 'at' is a reserved word
METHOD AtPut()
MESSAGE Add METHOD Append
METHOD AddAll()
METHOD Append()
METHOD Collect()
METHOD Copy()
METHOD Do()
METHOD DeleteAt()
METHOD InsertAt()
METHOD IndexOf()
METHOD IsScalar()
METHOD Remove()
METHOD Scan()
METHOD _Size // assignment method
END CLASS
METHOD Init( nElements ) CLASS Array
::size := If( nElements == nil, 0, nElements )
return Self
METHOD AddAll( aOtherCollection ) CLASS Array
aOtherCollection:Do( { |e| ::Add( e ) } )
return Self
METHOD AsString() CLASS Array
return "{ ... }"
METHOD AtIndex( n ) CLASS Array
return Self[ n ]
METHOD AtPut( n, x ) CLASS Array
return Self[ n ] := x
METHOD Append( x ) CLASS Array
AAdd( Self, x )
return .t.
METHOD Collect( b ) CLASS Array
local i, currElem
local result[ 0 ]
local nElems := Len( Self )
for i := 1 to nElems
currElem := Self[ i ]
if Eval( b, currElem )
AAdd( result, currElem )
end
next
return result
METHOD Copy() CLASS Array
return ACopy( Self, Array( Len( Self ) ) )
METHOD DeleteAt( n ) CLASS Array
if n > 0 .and. n <= Len( Self )
ADel( Self, n )
ASize( Self, Len( Self ) - 1 )
end
return Self
METHOD InsertAt( n, x ) CLASS Array
if n > Len( Self )
ASize( Self, n )
Self[ n ] := x
elseif n > 0
ASize( Self, Len( Self ) + 1 )
AIns( Self, n )
Self[ n ] := x
end
return Self
METHOD IsScalar() CLASS Array
return .t.
METHOD Do( b ) CLASS Array
local i
for i := 1 to Len( Self )
b:Eval( Self[ i ], i )
next
return Self
METHOD IndexOf( x ) CLASS Array
local i
local nElems := Len( Self )
for i := 1 to nElems
if Self[ i ] == x
return i
end
next
return 0
METHOD Remove( e ) CLASS Array
::DeleteAt( ::IndexOf( e ) )
return nil
METHOD Scan( b ) CLASS Array
return AScan( Self, b )
METHOD _Size( newSize ) CLASS Array
ASize( Self, newSize )
return newSize // so that assignment works according to standard rules