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make it possible to forward declare the class defined by WX_DECLARE_HASH_SET (fixes the build on systems where unordered_set is available after r60408)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60410 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2009-04-27 13:26:19 +00:00
parent 82edfbe7d9
commit 5e1d513ea3
1 changed files with 36 additions and 9 deletions
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45
include/wx/hashset.h
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@@ -22,14 +22,12 @@
#if defined(HAVE_STD_UNORDERED_SET)
#include <unordered_set>
#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\
typedef std::unordered_set< KEY_T, HASH_T, KEY_EQ_T > CLASSNAME
#define WX_HASH_SET_BASE_TEMPLATE std::unordered_set
#elif defined(HAVE_TR1_UNORDERED_SET)
#include <tr1/unordered_set>
#define _WX_DECLARE_HASH_SET( KEY_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP )\
typedef std::tr1::unordered_set< KEY_T, HASH_T, KEY_EQ_T > CLASSNAME
#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.
#error Update this code: unordered_set is available, but I do not know where.
#endif
#elif wxUSE_STL && defined(HAVE_STL_HASH_MAP)
@@ -40,10 +38,38 @@
#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( KEY_T, HASH_T, KEY_EQ_T, 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 ) \
@@ -103,7 +129,8 @@ public: \
{ 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) \