indexable.h
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/**
* \file
* This interface provides only one function at all.
* indexUuid will generate a uuid to the current object.
*
* This one is not generic enough for an interface...I
* don't want to rely on Uuid here....The Uuid stuff is more
* an implementation of this interface.
*
* An implementation of indexable::index should always return
* an instance of class Index / or an class that implements
* the index interface. Uuid would then be a candidate for such
* a class.
*
* \todo
* Maybe merge hashable and indexable. Thus we might get an
* easy way to exchange the hashing mechanism used for my
* associative arrays.
*
* \author Georg Hopp
*
* \copyright
* Copyright © 2014 Georg Hopp
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __TR_INTERFACE_INDEXABLE_H__
#define __TR_INTERFACE_INDEXABLE_H__
#include "tr/interface.h"
typedef void * (* fptr_TR_getIndex)(void *);
TR_INTERFACE(TR_Indexable) {
TR_IFID;
fptr_TR_getIndex index;
};
/**
* Get it's index from an indexable object.
*/
inline
void *
TR_getIndex(void * indexable)
{
void * ret;
TR_RETCALL(indexable, TR_Indexable, index, ret);
return ret;
}
#endif // __TR_INTERFACE_INDEXABLE_H__
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