// Author: Mattia Barbon
// Modified by:
// Created: 11/08/2003
-// RCS-ID: $Id$
// Copyright: (c) Mattia Barbon
-// Licence: wxWidgets licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_HASHSET_H_
#include "wx/hashmap.h"
-#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
+// 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>
#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;
+#define WX_HASH_SET_BASE_TEMPLATE WX_HASH_MAP_NAMESPACE::hash_set
-#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+#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_IMPL( 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) \
+ {} \
+}
+
+// In some standard library implementations (in particular, the libstdc++ that
+// ships with g++ 4.7), std::unordered_set inherits privately from its hasher
+// and comparator template arguments for purposes of empty base optimization.
+// As a result, in the declaration of a class deriving from std::unordered_set
+// the names of the hasher and comparator classes are interpreted as naming
+// the base class which is inaccessible.
+// The workaround is to prefix the class names with 'struct'; however, don't
+// do this on MSVC because it causes a warning there if the class was
+// declared as a 'class' rather than a 'struct' (and MSVC's std::unordered_set
+// implementation does not suffer from the access problem).
+#ifdef _MSC_VER
+#define WX_MAYBE_PREFIX_WITH_STRUCT(STRUCTNAME) STRUCTNAME
+#else
+#define WX_MAYBE_PREFIX_WITH_STRUCT(STRUCTNAME) struct STRUCTNAME
+#endif
+
+#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, PTROP, CLASSNAME, CLASSEXP ) \
+ _WX_DECLARE_HASH_SET_IMPL( \
+ KEY_T, \
+ WX_MAYBE_PREFIX_WITH_STRUCT(HASH_T), \
+ WX_MAYBE_PREFIX_WITH_STRUCT(KEY_EQ_T), \
+ PTROP, \
+ CLASSNAME, \
+ CLASSEXP)
+
+#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 ) \
CLASSNAME& operator=(const CLASSNAME&) { return *this; } \
};
-#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\
+#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, CLASSNAME##_wxImplementation_HashTable, CLASSEXP, grow_lf70, never_shrink ) \
+_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() ) {} \
\
- void insert( const key_type& key ) \
+ Insert_Result insert( const key_type& key ) \
{ \
- GetOrCreateNode( key ); \
+ bool created; \
+ Node *node = GetOrCreateNode( key, created ); \
+ return Insert_Result( iterator( node, this ), created ); \
} \
\
const_iterator find( const const_key_type& key ) const \
void erase( const const_iterator& it ) { erase( *it ); } \
\
/* count() == 0 | 1 */ \
- size_type count( const const_key_type& key ) \
+ size_type count( const const_key_type& key ) const \
{ return GetNode( key ) ? 1 : 0; } \
}
-#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+#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, CLASSNAME, class )
+ _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, 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 WXDLLEXPORT )
+ 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
//
// 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)
+ { \
+ type::iterator it, en; \
+ for( it = (hashset).begin(), en = (hashset).end(); it != en; ++it ) \
+ delete *it; \
+ (hashset).clear(); \
+ }
#endif // _WX_HASHSET_H_
projects / wxWidgets.git / blobdiff