1 | //
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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3 | //
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4 | // The contents of this file are covered under the licence agreement in the
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5 | // file "LICENCE" distributed with Cforall.
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6 | //
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7 | // iterator --
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8 | //
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9 | // Author : Richard C. Bilson
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10 | // Created On : Wed May 27 17:56:53 2015
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11 | // Last Modified By : Peter A. Buhr
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12 | // Last Modified On : Wed Mar 2 18:06:05 2016
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13 | // Update Count : 9
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14 | //
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15 |
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16 | #ifndef ITERATOR_H
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17 | #define ITERATOR_H
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18 |
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19 | // An iterator can be used to traverse a data structure.
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20 | trait iterator( otype iterator_type, otype elt_type ) {
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21 | // point to the next element
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22 | // iterator_type ?++( iterator_type * );
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23 | iterator_type ++?( iterator_type * );
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24 | iterator_type --?( iterator_type * );
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25 |
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26 | // can be tested for equality with other iterators
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27 | int ?==?( iterator_type, iterator_type );
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28 | int ?!=?( iterator_type, iterator_type );
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29 |
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30 | // dereference to get the pointed-at element
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31 | lvalue elt_type *?( iterator_type );
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32 | };
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33 |
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34 | trait iterator_for( otype iterator_type, otype collection_type, otype elt_type | iterator( iterator_type, elt_type ) ) {
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35 | // [ iterator_type begin, iterator_type end ] get_iterators( collection_type );
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36 | iterator_type begin( collection_type );
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37 | iterator_type end( collection_type );
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38 | };
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39 |
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40 | forall( otype iterator_type, otype elt_type | iterator( iterator_type, elt_type ) )
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41 | void for_each( iterator_type begin, iterator_type end, void (*func)( elt_type ) );
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42 |
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43 | forall( otype iterator_type, otype elt_type | iterator( iterator_type, elt_type ) )
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44 | void for_each_reverse( iterator_type begin, iterator_type end, void (*func)( elt_type ) );
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45 |
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46 | #endif // ITERATOR_H
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47 |
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48 | // Local Variables: //
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49 | // mode: c //
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50 | // tab-width: 4 //
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51 | // End: //
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