Generalized compilation fix for old compilers.

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

diff --git a/include/wx/log.h b/include/wx/log.h
index c3ee768cbfdd5678e6372b4b037971893f00ed4d..164bdfca90c5b9da37afe674ff0159adda24f6ba 100644 (file)
--- a/include/wx/log.h
+++ b/include/wx/log.h
@@ -121,13 +121,6 @@ public:
     // ctor
     wxLog(){}
 
-    // Internal buffer.
-
-    // Allow replacement of the fixed size static buffer with
-    // a user allocated one.  Pass in NULL to restore the
-    // built in static buffer.
-    static wxChar *SetLogBuffer( wxChar *buf, size_t size = 0 );
-
     // these functions allow to completely disable all log messages
 
     // is logging disabled now?
@@ -135,7 +128,7 @@ public:
 
     // change the flag state, return the previous one
     static bool EnableLogging(bool doIt = true)
-    { bool doLogOld = ms_doLog; ms_doLog = doIt; return doLogOld; }
+        { bool doLogOld = ms_doLog; ms_doLog = doIt; return doLogOld; }
 
     // static sink function - see DoLog() for function to overload in the
     // derived classes
@@ -190,7 +183,7 @@ public:
     // log the count of repeating messages instead of logging the messages
     // multiple times
     static void SetRepetitionCounting(bool bRepetCounting = true)
-    { ms_bRepetCounting = bRepetCounting; }
+        { ms_bRepetCounting = bRepetCounting; }
 
     // gets duplicate counting status
     static bool GetRepetitionCounting() { return ms_bRepetCounting; }
@@ -200,7 +193,7 @@ public:
 
     // add string trace mask
     static void AddTraceMask(const wxString& str)
-    { ms_aTraceMasks.push_back(str); }
+        { ms_aTraceMasks.push_back(str); }
 
     // add string trace mask
     static void RemoveTraceMask(const wxString& str);
@@ -248,6 +241,11 @@ public:
     // this method exists for backwards compatibility only, don't use
     bool HasPendingMessages() const { return true; }
 
+#if WXWIN_COMPATIBILITY_2_6
+    // this function doesn't do anything any more, don't call it
+    wxDEPRECATED( static wxChar *SetLogBuffer(wxChar *buf, size_t size = 0) );
+#endif
+
 protected:
     // the logging functions that can be overriden
 
@@ -515,6 +513,7 @@ public:
 #define wxTRACE_OleCalls wxEmptyString // OLE interface calls
 
 #endif // wxUSE_LOG/!wxUSE_LOG
+
 #define DECLARE_LOG_FUNCTION2(level, argclass, arg)                         \
     DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, WXDLLIMPEXP_BASE)
 
@@ -550,7 +549,7 @@ DECLARE_LOG_FUNCTION(SysError);
 DECLARE_LOG_FUNCTION2(SysError, long, lErrCode);
 
 // debug functions do nothing in release mode
-#if wxUSE_LOG_DEBUG
+#if wxUSE_LOG && wxUSE_LOG_DEBUG
     DECLARE_LOG_FUNCTION(Debug);
 
     // there is no more unconditional LogTrace: it is not different from
@@ -565,17 +564,34 @@ DECLARE_LOG_FUNCTION2(SysError, long, lErrCode);
     // wxLog::GetActive()->GetTraceMask() -- it's deprecated in favour of
     // string identifiers
     DECLARE_LOG_FUNCTION2(Trace, wxTraceMask, mask);
-#else   //!debug
-    // these functions do nothing in release builds
-
-    // note that leaving out "fmt" in the vararg functions provokes a warning
-    // from SGI CC: "the last argument of the varargs function is unnamed"
-    inline void wxVLogDebug(const wxChar *, va_list) { }
-    inline void wxLogDebug(const wxChar *fmt, ...) { wxUnusedVar(fmt); }
-    inline void wxVLogTrace(wxTraceMask, const wxChar *, va_list) { }
-    inline void wxLogTrace(wxTraceMask, const wxChar *fmt, ...) { wxUnusedVar(fmt); }
-    inline void wxVLogTrace(const wxChar *, const wxChar *, va_list) { }
-    inline void wxLogTrace(const wxChar *, const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+#else   //!debug || !wxUSE_LOG
+    // these functions do nothing in release builds, but don't define them as
+    // nothing as it could result in different code structure in debug and
+    // release and this could result in trouble when these macros are used
+    // inside if/else
+    //
+    // note that making wxVLogDebug/Trace() themselves (empty inline) functions
+    // is a bad idea as some compilers are stupid enough to not inline even
+    // empty functions if their parameters are complicated enough, but by
+    // defining them as an empty inline function we ensure that even dumbest
+    // compilers optimise them away
+    inline void wxLogNop() { }
+
+    #define wxVLogDebug(fmt, valist) wxLogNop()
+    #define wxVLogTrace(mask, fmt, valist) wxLogNop()
+
+    #ifdef HAVE_VARIADIC_MACROS
+        // unlike the inline functions below, this completely removes the
+        // wxLogXXX calls from the object file:
+        #define wxLogDebug(fmt, ...) wxLogNop()
+        #define wxLogTrace(mask, fmt, ...) wxLogNop()
+    #else // !HAVE_VARIADIC_MACROS
+        // note that leaving out "fmt" in the vararg functions provokes a warning
+        // from SGI CC: "the last argument of the varargs function is unnamed"
+        inline void wxLogDebug(const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+        inline void wxLogTrace(wxTraceMask, const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+        inline void wxLogTrace(const wxChar *, const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+    #endif // HAVE_VARIADIC_MACROS/!HAVE_VARIADIC_MACROS
 #endif // debug/!debug
 
 // wxLogFatalError helper: show the (fatal) error to the user in a safe way,
@@ -606,8 +622,8 @@ wxSafeShowMessage(const wxString& title, const wxString& text);
     #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
 
 #else   //!debug
-    inline void wxLogApiError(const wxChar *, long) { }
-    inline void wxLogLastError(const wxChar *) { }
+    #define wxLogApiError(api, err) wxLogNop()
+    #define wxLogLastError(api) wxLogNop()
 #endif  //debug/!debug
 
 // wxCocoa has additiional trace masks