74 lines
2 KiB
C++
74 lines
2 KiB
C++
|
/*
|
||
|
|
ITER-SOURCE.hpp - an interface to build an opaque iterator-based data source
|
||
|
|
|
||
|
|
Copyright (C) Lumiera.org
|
||
|
|
2010, Hermann Vosseler <Ichthyostega@web.de>
|
||
|
|
|
||
|
|
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 of the
|
||
|
|
License, 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 program; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @file iter-source.hpp
|
||
|
|
** Extension module to build an opaque data source, accessible as
|
||
|
|
** <i>Lumiera Forward Iterator</i>. It is based on combining an IterAdapter
|
||
|
|
** with classical polymorphism; here, the data source, which is addressed
|
||
|
|
** by IderAdapter through the "iteration control API", is abstracted behind
|
||
|
|
** an interface (with virtual functions). Together this allows to build
|
||
|
|
** a simple data source type, without needing to disclose details of
|
||
|
|
** the implementation.
|
||
|
|
**
|
||
|
|
** @see iter-adapter.hpp
|
||
|
|
** @see itertool.hpp
|
||
|
|
** @see iter-source-test.cpp
|
||
|
|
**
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef LIB_ITER_SOURCE_H
|
||
|
|
#define LIB_ITER_SOURCE_H
|
||
|
|
|
||
|
|
|
||
|
|
#include "lib/iter-adapter.hpp"
|
||
|
|
//#include "lib/bool-checkable.hpp"
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
namespace lib {
|
||
|
|
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Iteration source interface to abstract a data source,
|
||
|
|
* which then can be accessed through IterAdapter as a frontend,
|
||
|
|
* allowing to pull individual elements until exhaustion.
|
||
|
|
*
|
||
|
|
* @see PlacementIndex::Table#_eachEntry_4check usage example
|
||
|
|
* @see iter-source-test.cpp
|
||
|
|
*/
|
||
|
|
template<class TY>
|
||
|
|
class IterSource
|
||
|
|
: public lib::BoolCheckable<IterSource<TY> >
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace lib
|
||
|
|
#endif
|