Ichthyostega
db30da90ce
At the time of the initial design attempts, I naively created a classic interface to describe an fixed container allocated ''elsewhere.'' Meanwhile the C++ language has evolved and this whole idea looks much more as if it could be a ''Concept'' (C++20). Moreover, having several implementations of such a container interface is deemed inadequate, since it would necessitate ''at least two indirections'' — while going the Concept + Template route would allow to work without any indirection, given our current understanding that the `ProcNode` itself is ''not an interface'' — rather a building block.
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
/*
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REF-ARRAY.hpp - abstraction providing array-like access to a list of references
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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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.
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*/
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/** @file ref-array.hpp
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** Abstraction interface: array-like access by subscript
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** @todo as of 2016, this concept seems very questionable: do we _really_ want
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** to abstract over random access, or do we _actually_ want for-iteration??
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** @deprecated 5/2025 to be obsoleted by a similar design
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** @see several.hpp
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*/
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#ifndef LIB_REF_ARRAY_H
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#define LIB_REF_ARRAY_H
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#include "lib/nocopy.hpp"
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namespace lib {
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/**
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* Abstraction: Array of const references.
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* Typically the return type is an interface,
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* and the Implementation wraps some datastructure
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* holding subclasses.
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* @todo ouch -- a collection that isn't iterable... ///////////////////////TICKET #1040
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* @warning in rework 5/2025
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*/
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template<class T>
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class RefArray
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: util::NonCopyable
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{
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public:
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virtual ~RefArray() {} ///< this is an interface
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virtual T const& operator[] (size_t i) const =0;
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virtual size_t size() const =0;
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};
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} // namespace lib
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#endif
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