support SDK < 10.6, fixes #14902

[wxWidgets.git] / include / wx / longlong.h

diff --git a/include/wx/longlong.h b/include/wx/longlong.h
index de468676fd401fd0c889d9a59d0a3d61a3a63aef..19c580110e25dccaf721f61e413bfcd320b5070a 100644 (file)
--- a/include/wx/longlong.h
+++ b/include/wx/longlong.h
@@ -404,14 +404,23 @@ public:
         // convert to ulong with range checking in debug mode (only!)
     unsigned long ToULong() const
     {
-        wxASSERT_MSG( m_ll <= LONG_MAX,
+        wxASSERT_MSG( m_ll <= ULONG_MAX,
                       wxT("wxULongLong to long conversion loss of precision") );
 
         return wx_truncate_cast(unsigned long, m_ll);
     }
 
         // convert to double
+        //
+        // For some completely obscure reasons compiling the cast below with
+        // VC6 in DLL builds only (!) results in "error C2520: conversion from
+        // unsigned __int64 to double not implemented, use signed __int64" so
+        // we must use a different version for that compiler.
+#ifdef __VISUALC6__
+    double ToDouble() const;
+#else
     double ToDouble() const { return wx_truncate_cast(double, m_ll); }
+#endif
 
     // operations
         // addition
@@ -1077,25 +1086,60 @@ WXDLLIMPEXP_BASE class wxTextInputStream &operator>>(class wxTextInputStream &st
 
 #if wxUSE_LONGLONG_NATIVE
 
+// VC6 is known to not have __int64 specializations of numeric_limits<> in its
+// <limits> anyhow so don't bother including it, especially as it results in
+// tons of warnings because the standard header itself uses obsolete template
+// specialization syntax.
+#ifndef __VISUALC6__
+
 #include <limits>
 
 namespace std
 {
 
-template<> class numeric_limits<wxLongLong>
-    : public numeric_limits<wxLongLong_t>
-{
-};
-
-template<> class numeric_limits<wxULongLong>
-    : public numeric_limits<wxULongLong_t>
-{
-};
+#ifdef __clang__
+  // libstdc++ (used by Clang) uses struct for numeric_limits; unlike gcc, clang
+  // warns about this
+  template<> struct numeric_limits<wxLongLong>  : public numeric_limits<wxLongLong_t> {};
+  template<> struct numeric_limits<wxULongLong> : public numeric_limits<wxULongLong_t> {};
+#else
+  template<> class numeric_limits<wxLongLong>  : public numeric_limits<wxLongLong_t> {};
+  template<> class numeric_limits<wxULongLong> : public numeric_limits<wxULongLong_t> {};
+#endif
 
 } // namespace std
 
+#endif // !VC6
+
 #endif // wxUSE_LONGLONG_NATIVE
 
+// ----------------------------------------------------------------------------
+// Specialize wxArgNormalizer to allow using wxLongLong directly with wx pseudo
+// vararg functions.
+// ----------------------------------------------------------------------------
+
+// Notice that this must be done here and not in wx/strvararg.h itself because
+// we can't include wx/longlong.h from there as this header itself includes
+// wx/string.h which includes wx/strvararg.h too, so to avoid the circular
+// dependencies we can only do it here (or add another header just for this but
+// it doesn't seem necessary).
+#include "wx/strvararg.h"
+
+template<>
+struct WXDLLIMPEXP_BASE wxArgNormalizer<wxLongLong>
+{
+     wxArgNormalizer(wxLongLong value,
+                     const wxFormatString *fmt, unsigned index)
+         : m_value(value)
+     {
+         wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_LongLongInt );
+     }
+
+     wxLongLong_t get() const { return m_value.GetValue(); }
+
+     wxLongLong m_value;
+};
+
 #endif // wxUSE_LONGLONG
 
 #endif // _WX_LONGLONG_H