| 1 | // |
|---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
|---|
| 3 | // |
|---|
| 4 | // The contents of this file are covered under the licence agreement in the |
|---|
| 5 | // file "LICENCE" distributed with Cforall. |
|---|
| 6 | // |
|---|
| 7 | // iterator -- |
|---|
| 8 | // |
|---|
| 9 | // Author : Richard C. Bilson |
|---|
| 10 | // Created On : Wed May 27 17:56:53 2015 |
|---|
| 11 | // Last Modified By : Peter A. Buhr |
|---|
| 12 | // Last Modified On : Fri Jul 7 08:37:25 2017 |
|---|
| 13 | // Update Count : 10 |
|---|
| 14 | // |
|---|
| 15 | |
|---|
| 16 | #pragma once |
|---|
| 17 | |
|---|
| 18 | // An iterator can be used to traverse a data structure. |
|---|
| 19 | trait iterator( otype iterator_type, otype elt_type ) { |
|---|
| 20 | // point to the next element |
|---|
| 21 | // iterator_type ?++( iterator_type * ); |
|---|
| 22 | iterator_type ++?( iterator_type * ); |
|---|
| 23 | iterator_type --?( iterator_type * ); |
|---|
| 24 | |
|---|
| 25 | // can be tested for equality with other iterators |
|---|
| 26 | int ?==?( iterator_type, iterator_type ); |
|---|
| 27 | int ?!=?( iterator_type, iterator_type ); |
|---|
| 28 | |
|---|
| 29 | // dereference to get the pointed-at element |
|---|
| 30 | lvalue elt_type *?( iterator_type ); |
|---|
| 31 | }; |
|---|
| 32 | |
|---|
| 33 | trait iterator_for( otype iterator_type, otype collection_type, otype elt_type | iterator( iterator_type, elt_type ) ) { |
|---|
| 34 | // [ iterator_type begin, iterator_type end ] get_iterators( collection_type ); |
|---|
| 35 | iterator_type begin( collection_type ); |
|---|
| 36 | iterator_type end( collection_type ); |
|---|
| 37 | }; |
|---|
| 38 | |
|---|
| 39 | forall( otype iterator_type, otype elt_type | iterator( iterator_type, elt_type ) ) |
|---|
| 40 | void for_each( iterator_type begin, iterator_type end, void (* func)( elt_type ) ); |
|---|
| 41 | |
|---|
| 42 | forall( otype iterator_type, otype elt_type | iterator( iterator_type, elt_type ) ) |
|---|
| 43 | void for_each_reverse( iterator_type begin, iterator_type end, void (* func)( elt_type ) ); |
|---|
| 44 | |
|---|
| 45 | // Local Variables: // |
|---|
| 46 | // mode: c // |
|---|
| 47 | // tab-width: 4 // |
|---|
| 48 | // End: // |
|---|
