| 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 : Fri Jul 7 08:37:25 2017 |
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| 13 | // Update Count : 10 |
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| 14 | // |
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| 15 | |
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| 16 | #pragma once |
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| 17 | |
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| 18 | // An iterator can be used to traverse a data structure. |
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| 19 | trait iterator( otype iterator_type, otype elt_type ) { |
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| 20 | // point to the next element |
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| 21 | // iterator_type ?++( iterator_type & ); |
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| 22 | iterator_type ++?( iterator_type & ); |
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| 23 | iterator_type --?( iterator_type & ); |
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| 24 | |
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| 25 | // can be tested for equality with other iterators |
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| 26 | int ?==?( iterator_type, iterator_type ); |
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| 27 | int ?!=?( iterator_type, iterator_type ); |
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| 28 | |
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| 29 | // dereference to get the pointed-at element |
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| 30 | elt_type & *?( iterator_type ); |
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| 31 | }; |
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| 32 | |
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| 33 | trait iterator_for( otype iterator_type, otype collection_type, otype elt_type | iterator( iterator_type, elt_type ) ) { |
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| 34 | // [ iterator_type begin, iterator_type end ] get_iterators( collection_type ); |
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| 35 | iterator_type begin( collection_type ); |
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| 36 | iterator_type end( collection_type ); |
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| 37 | }; |
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| 38 | |
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| 39 | forall( otype iterator_type, otype elt_type | iterator( iterator_type, elt_type ) ) |
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| 40 | void for_each( iterator_type begin, iterator_type end, void (* func)( elt_type ) ); |
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| 41 | |
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| 42 | forall( otype iterator_type, otype elt_type | iterator( iterator_type, elt_type ) ) |
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| 43 | void for_each_reverse( iterator_type begin, iterator_type end, void (* func)( elt_type ) ); |
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| 44 | |
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| 45 | // Local Variables: // |
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| 46 | // mode: c // |
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| 47 | // tab-width: 4 // |
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| 48 | // End: // |
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