#endif // defined( __VISUALC__ )
/*
- Note: the outer helper class _WX_LIST_HELPER_##liT below is a workaround
+ Note 1: the outer helper class _WX_LIST_HELPER_##liT below is a workaround
for mingw 3.2.3 compiler bug that prevents a static function of liT class
from being exported into dll. A minimal code snippet reproducing the bug:
The program does not link under mingw_gcc 3.2.3 producing undefined
reference to Foo::Bar() function
+
+
+ Note 2: the EmptyList is needed to allow having a NULL pointer-like
+ invalid iterator. We used to use just an uninitialized iterator object
+ instead but this fails with some debug/checked versions of STL, notably the
+ glibc version activated with _GLIBCXX_DEBUG, so we need to have a separate
+ invalid iterator.
*/
// the real wxList-class declaration
decl liT : public std::list<elT> \
{ \
private: \
+ typedef std::list<elT> BaseListType; \
+ static BaseListType EmptyList; \
+ \
bool m_destroy; \
+ \
public: \
decl compatibility_iterator \
{ \
private: \
- /* Workaround for broken VC6 nested class name resolution */ \
- typedef std::list<elT>::iterator iterator; \
- friend class liT; \
- private: \
+ /* Workaround for broken VC6 nested class name resolution */ \
+ typedef std::list<elT>::iterator iterator; \
+ friend class liT; \
+ \
iterator m_iter; \
liT * m_list; \
+ \
public: \
compatibility_iterator() \
- : m_iter(), m_list( NULL ) {} \
+ : m_iter(EmptyList.end()), m_list( NULL ) {} \
compatibility_iterator( liT* li, iterator i ) \
: m_iter( i ), m_list( li ) {} \
compatibility_iterator( const liT* li, iterator i ) \
std::advance( i, idx ); \
return compatibility_iterator( this, i ); \
} \
+ elT operator[](size_t idx) const \
+ { \
+ return Item(idx).GetData(); \
+ } \
+ \
compatibility_iterator GetFirst() const \
{ \
return compatibility_iterator( this, \
void Sort( wxSortCompareFunction compfunc ) \
{ sort( WX_LIST_SORTFUNCTION( elT, compfunc ) ); } \
~liT() { Clear(); } \
+ \
+ /* It needs access to our EmptyList */ \
+ friend decl compatibility_iterator; \
}
#define WX_DECLARE_LIST(elementtype, listname) \