118 lines
6.7 KiB
C
118 lines
6.7 KiB
C
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/hashset.h
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// Purpose: wxHashSet class
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// Author: Mattia Barbon
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// Modified by:
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// Created: 11/08/2003
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// RCS-ID: $Id: hashset.h 49056 2007-10-05 22:42:35Z VS $
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// Copyright: (c) Mattia Barbon
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_HASHSET_H_
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#define _WX_HASHSET_H_
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#include "wx/hashmap.h"
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#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
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#if defined(HAVE_EXT_HASH_MAP)
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#include <ext/hash_set>
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#elif defined(HAVE_HASH_MAP)
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#include <hash_set>
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#endif
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#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\
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typedef WX_HASH_MAP_NAMESPACE::hash_set< KEY_T, HASH_T, KEY_EQ_T > CLASSNAME
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#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
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// this is a complex way of defining an easily inlineable identity function...
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#define _WX_DECLARE_HASH_SET_KEY_EX( KEY_T, CLASSNAME, CLASSEXP ) \
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CLASSEXP CLASSNAME \
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{ \
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typedef KEY_T key_type; \
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typedef const key_type const_key_type; \
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typedef const_key_type& const_key_reference; \
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public: \
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CLASSNAME() { } \
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const_key_reference operator()( const_key_reference key ) const \
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{ return key; } \
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\
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/* the dummy assignment operator is needed to suppress compiler */ \
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/* warnings from hash table class' operator=(): gcc complains about */ \
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/* "statement with no effect" without it */ \
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CLASSNAME& operator=(const CLASSNAME&) { return *this; } \
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};
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#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\
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_WX_DECLARE_HASH_SET_KEY_EX( KEY_T, CLASSNAME##_wxImplementation_KeyEx, CLASSEXP ) \
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_WX_DECLARE_HASHTABLE( KEY_T, KEY_T, HASH_T, CLASSNAME##_wxImplementation_KeyEx, KEY_EQ_T, CLASSNAME##_wxImplementation_HashTable, CLASSEXP, grow_lf70, never_shrink ) \
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CLASSEXP CLASSNAME:public CLASSNAME##_wxImplementation_HashTable \
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{ \
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public: \
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_WX_DECLARE_PAIR( iterator, bool, Insert_Result, CLASSEXP ) \
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\
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wxEXPLICIT CLASSNAME( size_type hint = 100, hasher hf = hasher(), \
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key_equal eq = key_equal() ) \
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: CLASSNAME##_wxImplementation_HashTable( hint, hf, eq, \
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CLASSNAME##_wxImplementation_KeyEx() ) {} \
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\
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Insert_Result insert( const key_type& key ) \
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{ \
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bool created; \
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Node *node = GetOrCreateNode( key, created ); \
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return Insert_Result( iterator( node, this ), created ); \
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} \
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\
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const_iterator find( const const_key_type& key ) const \
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{ \
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return const_iterator( GetNode( key ), this ); \
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} \
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\
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iterator find( const const_key_type& key ) \
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{ \
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return iterator( GetNode( key ), this ); \
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} \
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\
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size_type erase( const key_type& k ) \
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{ return CLASSNAME##_wxImplementation_HashTable::erase( k ); } \
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void erase( const iterator& it ) { erase( *it ); } \
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void erase( const const_iterator& it ) { erase( *it ); } \
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\
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/* count() == 0 | 1 */ \
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size_type count( const const_key_type& key ) \
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{ return GetNode( key ) ? 1 : 0; } \
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}
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#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
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// these macros are to be used in the user code
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#define WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \
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_WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, class )
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// and these do exactly the same thing but should be used inside the
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// library
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#define WX_DECLARE_HASH_SET_WITH_DECL( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL) \
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_WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL )
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#define WX_DECLARE_EXPORTED_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \
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WX_DECLARE_HASH_SET_WITH_DECL( KEY_T, HASH_T, KEY_EQ_T, \
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CLASSNAME, class WXDLLEXPORT )
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// delete all hash elements
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//
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// NB: the class declaration of the hash elements must be visible from the
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// place where you use this macro, otherwise the proper destructor may not
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// be called (a decent compiler should give a warning about it, but don't
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// count on it)!
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#define WX_CLEAR_HASH_SET(type, hashset) \
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{ \
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type::iterator it, en; \
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for( it = (hashset).begin(), en = (hashset).end(); it != en; ++it ) \
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delete *it; \
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(hashset).clear(); \
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}
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#endif // _WX_HASHSET_H_
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