175 lines
9.6 KiB
C++
175 lines
9.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/hashset.h
|
|
// Purpose: wxHashSet class
|
|
// Author: Mattia Barbon
|
|
// Modified by:
|
|
// Created: 11/08/2003
|
|
// RCS-ID: $Id: hashset.h 69568 2011-10-27 22:26:10Z VZ $
|
|
// Copyright: (c) Mattia Barbon
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_HASHSET_H_
|
|
#define _WX_HASHSET_H_
|
|
|
|
#include "wx/hashmap.h"
|
|
|
|
// see comment in wx/hashmap.h which also applies to different standard hash
|
|
// set classes
|
|
|
|
#if wxUSE_STD_CONTAINERS && \
|
|
(defined(HAVE_STD_UNORDERED_SET) || defined(HAVE_TR1_UNORDERED_SET))
|
|
|
|
#if defined(HAVE_STD_UNORDERED_SET)
|
|
#include <unordered_set>
|
|
#define WX_HASH_SET_BASE_TEMPLATE std::unordered_set
|
|
#elif defined(HAVE_TR1_UNORDERED_SET)
|
|
#include <tr1/unordered_set>
|
|
#define WX_HASH_SET_BASE_TEMPLATE std::tr1::unordered_set
|
|
#else
|
|
#error Update this code: unordered_set is available, but I do not know where.
|
|
#endif
|
|
|
|
#elif wxUSE_STD_CONTAINERS && 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_HASH_SET_BASE_TEMPLATE WX_HASH_MAP_NAMESPACE::hash_set
|
|
|
|
#endif // different hash_set/unordered_set possibilities
|
|
|
|
#ifdef WX_HASH_SET_BASE_TEMPLATE
|
|
|
|
// we need to define the class declared by _WX_DECLARE_HASH_SET as a class and
|
|
// not a typedef to allow forward declaring it
|
|
#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, PTROP, CLASSNAME, CLASSEXP ) \
|
|
CLASSEXP CLASSNAME \
|
|
: public WX_HASH_SET_BASE_TEMPLATE< KEY_T, HASH_T, KEY_EQ_T > \
|
|
{ \
|
|
public: \
|
|
explicit CLASSNAME(size_type n = 3, \
|
|
const hasher& h = hasher(), \
|
|
const key_equal& ke = key_equal(), \
|
|
const allocator_type& a = allocator_type()) \
|
|
: WX_HASH_SET_BASE_TEMPLATE< KEY_T, HASH_T, KEY_EQ_T >(n, h, ke, a) \
|
|
{} \
|
|
template <class InputIterator> \
|
|
CLASSNAME(InputIterator f, InputIterator l, \
|
|
const hasher& h = hasher(), \
|
|
const key_equal& ke = key_equal(), \
|
|
const allocator_type& a = allocator_type()) \
|
|
: WX_HASH_SET_BASE_TEMPLATE< KEY_T, HASH_T, KEY_EQ_T >(f, l, h, ke, a)\
|
|
{} \
|
|
CLASSNAME(const WX_HASH_SET_BASE_TEMPLATE< KEY_T, HASH_T, KEY_EQ_T >& s) \
|
|
: WX_HASH_SET_BASE_TEMPLATE< KEY_T, HASH_T, KEY_EQ_T >(s) \
|
|
{} \
|
|
}
|
|
|
|
#else // no appropriate STL class, use our own implementation
|
|
|
|
// 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, PTROP, 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, PTROP, \
|
|
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 ) const \
|
|
{ return GetNode( key ) ? 1 : 0; } \
|
|
}
|
|
|
|
#endif // STL/wx implementations
|
|
|
|
|
|
// 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, wxPTROP_NORMAL, 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, wxPTROP_NORMAL, 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 WXDLLIMPEXP_CORE )
|
|
|
|
// Finally these versions allow to define hash sets of non-objects (including
|
|
// pointers, hence the confusing but wxArray-compatible name) without
|
|
// operator->() which can't be used for them. This is mostly used inside the
|
|
// library itself to avoid warnings when using such hash sets with some less
|
|
// common compilers (notably Sun CC).
|
|
#define WX_DECLARE_HASH_SET_PTR( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME) \
|
|
_WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, wxPTROP_NOP, CLASSNAME, class )
|
|
#define WX_DECLARE_HASH_SET_WITH_DECL_PTR( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL) \
|
|
_WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, wxPTROP_NOP, CLASSNAME, DECL )
|
|
|
|
// 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) \
|
|
{ \
|
|
type::iterator it, en; \
|
|
for( it = (hashset).begin(), en = (hashset).end(); it != en; ++it ) \
|
|
delete *it; \
|
|
(hashset).clear(); \
|
|
}
|
|
|
|
#endif // _WX_HASHSET_H_
|