///////////////////////////////////////////////////////////////////////////// // Name: wx/hashset.h // Purpose: wxHashSet class // Author: Mattia Barbon // Modified by: // Created: 11/08/2003 // RCS-ID: $Id$ // Copyright: (c) Mattia Barbon // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_HASHSET_H_ #define _WX_HASHSET_H_ #include "wx/hashmap.h" #if wxUSE_STL && defined(HAVE_STL_HASH_MAP) #if defined(HAVE_EXT_HASH_MAP) #include <ext/hash_set> #elif defined(HAVE_HASH_MAP) #include <hash_set> #endif #define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\ typedef WX_HASH_MAP_NAMESPACE::hash_set< KEY_T, HASH_T, KEY_EQ_T > CLASSNAME #else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) // this is a complex way of defining an easily inlineable identity function... #define _WX_DECLARE_HASH_SET_KEY_EX( KEY_T, CLASSNAME, CLASSEXP ) \ CLASSEXP CLASSNAME \ { \ typedef KEY_T key_type; \ typedef const key_type const_key_type; \ typedef const_key_type& const_key_reference; \ public: \ CLASSNAME() { } \ const_key_reference operator()( const_key_reference key ) const \ { return key; } \ \ /* the dummy assignment operator is needed to suppress compiler */ \ /* warnings from hash table class' operator=(): gcc complains about */ \ /* "statement with no effect" without it */ \ CLASSNAME& operator=(const CLASSNAME&) { return *this; } \ }; #define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\ _WX_DECLARE_HASH_SET_KEY_EX( KEY_T, CLASSNAME##_wxImplementation_KeyEx, CLASSEXP ) \ _WX_DECLARE_HASHTABLE( KEY_T, KEY_T, HASH_T, CLASSNAME##_wxImplementation_KeyEx, KEY_EQ_T, CLASSNAME##_wxImplementation_HashTable, CLASSEXP, grow_lf70, never_shrink ) \ CLASSEXP CLASSNAME:public CLASSNAME##_wxImplementation_HashTable \ { \ public: \ _WX_DECLARE_PAIR( iterator, bool, Insert_Result, CLASSEXP ) \ \ wxEXPLICIT CLASSNAME( size_type hint = 100, hasher hf = hasher(), \ key_equal eq = key_equal() ) \ : CLASSNAME##_wxImplementation_HashTable( hint, hf, eq, \ CLASSNAME##_wxImplementation_KeyEx() ) {} \ \ Insert_Result insert( const key_type& key ) \ { \ bool created; \ Node *node = GetOrCreateNode( key, created ); \ return Insert_Result( iterator( node, this ), created ); \ } \ \ const_iterator find( const const_key_type& key ) const \ { \ return const_iterator( GetNode( key ), this ); \ } \ \ iterator find( const const_key_type& key ) \ { \ return iterator( GetNode( key ), this ); \ } \ \ size_type erase( const key_type& k ) \ { return CLASSNAME##_wxImplementation_HashTable::erase( k ); } \ void erase( const iterator& it ) { erase( *it ); } \ void erase( const const_iterator& it ) { erase( *it ); } \ \ /* count() == 0 | 1 */ \ size_type count( const const_key_type& key ) \ { return GetNode( key ) ? 1 : 0; } \ } #endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) // these macros are to be used in the user code #define WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \ _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, class ) // and these do exactly the same thing but should be used inside the // library #define WX_DECLARE_HASH_SET_WITH_DECL( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL) \ _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL ) #define WX_DECLARE_EXPORTED_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \ WX_DECLARE_HASH_SET_WITH_DECL( KEY_T, HASH_T, KEY_EQ_T, \ CLASSNAME, class WXDLLEXPORT ) // delete all hash elements // // NB: the class declaration of the hash elements must be visible from the // place where you use this macro, otherwise the proper destructor may not // be called (a decent compiler should give a warning about it, but don't // count on it)! #define WX_CLEAR_HASH_SET(type, hashset) \ WX_CLEAR_HASH_MAP(type, hashset) #endif // _WX_HASHSET_H_