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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/hashset.h | |
3 | // Purpose: wxHashSet class | |
4 | // Author: Mattia Barbon | |
5 | // Modified by: | |
6 | // Created: 11/08/2003 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Mattia Barbon | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifndef _WX_HASHSET_H_ | |
13 | #define _WX_HASHSET_H_ | |
14 | ||
15 | #include "wx/hashmap.h" | |
16 | ||
17 | // this is a complex way of defining an easily inlineable identity function... | |
18 | #define _WX_DECLARE_HASH_SET_KEY_EX( KEY_T, CLASSNAME, CLASSEXP ) \ | |
19 | CLASSEXP CLASSNAME \ | |
20 | { \ | |
21 | typedef KEY_T key_type; \ | |
22 | typedef const key_type const_key_type; \ | |
23 | typedef const_key_type& const_key_reference; \ | |
24 | public: \ | |
25 | CLASSNAME() { } \ | |
26 | const_key_reference operator()( const_key_reference key ) const \ | |
27 | { return key; } \ | |
28 | \ | |
29 | /* the dummy assignment operator is needed to suppress compiler */ \ | |
30 | /* warnings from hash table class' operator=(): gcc complains about */ \ | |
31 | /* "statement with no effect" without it */ \ | |
32 | CLASSNAME& operator=(const CLASSNAME&) { return *this; } \ | |
33 | }; | |
34 | ||
35 | #define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\ | |
36 | _WX_DECLARE_HASH_SET_KEY_EX( KEY_T, CLASSNAME##_wxImplementation_KeyEx, CLASSEXP ) \ | |
37 | _WX_DECLARE_HASHTABLE( KEY_T, KEY_T, HASH_T, CLASSNAME##_wxImplementation_KeyEx, KEY_EQ_T, CLASSNAME##_wxImplementation_HashTable, CLASSEXP, grow_lf70, never_shrink ) \ | |
38 | CLASSEXP CLASSNAME:public CLASSNAME##_wxImplementation_HashTable \ | |
39 | { \ | |
40 | public: \ | |
41 | CLASSNAME( size_type hint = 100, hasher hf = hasher(), \ | |
42 | key_equal eq = key_equal() ) \ | |
43 | : CLASSNAME##_wxImplementation_HashTable( hint, hf, eq, \ | |
44 | CLASSNAME##_wxImplementation_KeyEx() ) {} \ | |
45 | \ | |
46 | void insert( const key_type& key ) \ | |
47 | { \ | |
48 | GetOrCreateNode( key ); \ | |
49 | } \ | |
50 | \ | |
51 | const_iterator find( const const_key_type& key ) const \ | |
52 | { \ | |
53 | return const_iterator( GetNode( key ), this ); \ | |
54 | } \ | |
55 | \ | |
56 | iterator find( const const_key_type& key ) \ | |
57 | { \ | |
58 | return iterator( GetNode( key ), this ); \ | |
59 | } \ | |
60 | \ | |
61 | size_type erase( const key_type& k ) \ | |
62 | { return CLASSNAME##_wxImplementation_HashTable::erase( k ); } \ | |
63 | void erase( const iterator& it ) { erase( *it ); } \ | |
64 | void erase( const const_iterator& it ) { erase( *it ); } \ | |
65 | \ | |
66 | /* count() == 0 | 1 */ \ | |
67 | size_type count( const const_key_type& key ) \ | |
68 | { return GetNode( key ) ? 1 : 0; } \ | |
69 | } | |
70 | ||
71 | // these macros are to be used in the user code | |
72 | #define WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \ | |
73 | _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, class ) | |
74 | ||
75 | // and these do exactly the same thing but should be used inside the | |
76 | // library | |
77 | #define WX_DECLARE_HASH_SET_WITH_DECL( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL) \ | |
78 | _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL ) | |
79 | ||
80 | #define WX_DECLARE_EXPORTED_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \ | |
81 | WX_DECLARE_HASH_SET_WITH_DECL( KEY_T, HASH_T, KEY_EQ_T, \ | |
82 | CLASSNAME, class WXDLLEXPORT ) | |
83 | ||
84 | // delete all hash elements | |
85 | // | |
86 | // NB: the class declaration of the hash elements must be visible from the | |
87 | // place where you use this macro, otherwise the proper destructor may not | |
88 | // be called (a decent compiler should give a warning about it, but don't | |
89 | // count on it)! | |
90 | #define WX_CLEAR_HASH_SET(type, hashset) \ | |
91 | WX_CLEAR_HASH_MAP(type, hashset) | |
92 | ||
93 | #endif // _WX_HASHSET_H_ |