Don't create multiple parent-less top level frames in layout sample.

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

diff --git a/include/wx/debug.h b/include/wx/debug.h
index 59b2d61d37c8388849296cb6c6665c103b655605..35c7ca1222608c382ccdde4dba97ac6ff5b0ac83 100644 (file)
--- a/include/wx/debug.h
+++ b/include/wx/debug.h
@@ -11,7 +11,7 @@
 #ifndef _WX_DEBUG_H_
 #define _WX_DEBUG_H_
 
 #ifndef _WX_DEBUG_H_
 #define _WX_DEBUG_H_
 

-#if !defined(__WXPALMOS5__) && !defined(__WXWINCE__)
+#if !defined(__WXWINCE__)

     #include  <assert.h>
 #endif // systems without assert.h
 
     #include  <assert.h>
 #endif // systems without assert.h
 


@@ -19,6 +19,7 @@
 
 #include "wx/chartype.h"     // for __TFILE__ and wxChar
 #include "wx/cpp.h"          // for __WXFUNCTION__
 
 #include "wx/chartype.h"     // for __TFILE__ and wxChar
 #include "wx/cpp.h"          // for __WXFUNCTION__

+#include "wx/dlimpexp.h"     // for WXDLLIMPEXP_FWD_BASE

 
 class WXDLLIMPEXP_FWD_BASE wxString;
 class WXDLLIMPEXP_FWD_BASE wxCStrData;
 
 class WXDLLIMPEXP_FWD_BASE wxString;
 class WXDLLIMPEXP_FWD_BASE wxCStrData;


@@ -37,28 +38,29 @@ class WXDLLIMPEXP_FWD_BASE wxCStrData;
     2:  Maximal (at least for now): asserts which are "expensive"
         (performance-wise) or only make sense for finding errors in wxWidgets
         itself, as opposed to bugs in applications using it, are also enabled.
     2:  Maximal (at least for now): asserts which are "expensive"
         (performance-wise) or only make sense for finding errors in wxWidgets
         itself, as opposed to bugs in applications using it, are also enabled.

-
-    For compatibility reasons, currently wxDEBUG_LEVEL is defined if
-    __WXDEBUG__ is defined but in the near future (2.9.1) the role of the flags
-    will change and wxDEBUG_LEVEL will be the primary value with __WXDEBUG__
-    only used for compatibility.

  */
 
  */
 

-// if _DEBUG is defined (MS VC++ and others use it in debug builds), define
-// __WXDEBUG__ too
-#ifdef _DEBUG
+// unless wxDEBUG_LEVEL is predefined (by configure or via wx/setup.h under
+// Windows), use the default
+#if !defined(wxDEBUG_LEVEL)
+    #define wxDEBUG_LEVEL 1
+#endif // !defined(wxDEBUG_LEVEL)
+
+/*
+    __WXDEBUG__ is defined when wxDEBUG_LEVEL != 0. This is done mostly for
+    compatibility but it also provides a simpler way to check if asserts and
+    debug logging is enabled at all.
+ */
+#if wxDEBUG_LEVEL > 0

     #ifndef __WXDEBUG__
         #define __WXDEBUG__
     #ifndef __WXDEBUG__
         #define __WXDEBUG__

-    #endif // !__WXDEBUG__
-#endif // _DEBUG
-
-// if NDEBUG is defined (<assert.h> uses it), undef __WXDEBUG__ and WXDEBUG
-#ifdef NDEBUG
+    #endif
+#else

     #undef __WXDEBUG__
     #undef __WXDEBUG__

-    #undef WXDEBUG
-#endif // NDEBUG
+#endif

 
 

-// if __WXDEBUG__ is defined, make sure that WXDEBUG is defined and >= 1
+// Finally there is also a very old WXDEBUG macro not used anywhere at all, it
+// is only defined for compatibility.

 #ifdef __WXDEBUG__
     #if !defined(WXDEBUG) || !WXDEBUG
         #undef WXDEBUG
 #ifdef __WXDEBUG__
     #if !defined(WXDEBUG) || !WXDEBUG
         #undef WXDEBUG


@@ -66,15 +68,6 @@ class WXDLLIMPEXP_FWD_BASE wxCStrData;
     #endif // !WXDEBUG
 #endif // __WXDEBUG__
 
     #endif // !WXDEBUG
 #endif // __WXDEBUG__
 

-// temporarily define wxDEBUG_LEVEL as function of __WXDEBUG__
-#if !defined(wxDEBUG_LEVEL)
-    #ifdef __WXDEBUG__
-        #define wxDEBUG_LEVEL 1
-    #else
-        #define wxDEBUG_LEVEL 0
-    #endif
-#endif // !defined(wxDEBUG_LEVEL)
-

 // ----------------------------------------------------------------------------
 // Handling assertion failures
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // Handling assertion failures
 // ----------------------------------------------------------------------------


@@ -105,7 +98,7 @@ extern WXDLLIMPEXP_DATA_BASE(wxAssertHandler_t) wxTheAssertHandler;
 
     While usually it is enough -- and more convenient -- to just override
     OnAssertFailure(), to handle all assertion failures, including those
 
     While usually it is enough -- and more convenient -- to just override
     OnAssertFailure(), to handle all assertion failures, including those

-    occurring even before wxApp object creation of after its destruction you
+    occurring even before wxApp object creation or after its destruction you

     need to provide your assertion handler function.
 
     This function also provides a simple way to disable all asserts: simply
     need to provide your assertion handler function.
 
     This function also provides a simple way to disable all asserts: simply


@@ -126,9 +119,17 @@ inline wxAssertHandler_t wxSetAssertHandler(wxAssertHandler_t handler)
     return old;
 }
 
     return old;
 }
 

+/*
+    Reset the default assert handler.
+
+    This may be used to enable asserts, which are disabled by default in this
+    case, for programs built in release build (NDEBUG defined).
+ */
+extern void WXDLLIMPEXP_BASE wxSetDefaultAssertHandler();
+

 #else // !wxDEBUG_LEVEL
 
 #else // !wxDEBUG_LEVEL
 

-// provide empty subs in case assertions are completely disabled
+// provide empty stubs in case assertions are completely disabled

 //
 // NB: can't use WXUNUSED() here as we're included from wx/defs.h before it is
 //     defined
 //
 // NB: can't use WXUNUSED() here as we're included from wx/defs.h before it is
 //     defined


@@ -137,16 +138,31 @@ inline wxAssertHandler_t wxSetAssertHandler(wxAssertHandler_t /* handler */)
     return NULL;
 }
 
     return NULL;
 }
 

+inline void wxSetDefaultAssertHandler() { }
+

 #endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
 
 // simply a synonym for wxSetAssertHandler(NULL)
 inline void wxDisableAsserts() { wxSetAssertHandler(NULL); }
 
 #endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
 
 // simply a synonym for wxSetAssertHandler(NULL)
 inline void wxDisableAsserts() { wxSetAssertHandler(NULL); }
 

+/*
+    A macro which disables asserts for applications compiled in release build.
+
+    By default, wxIMPLEMENT_APP (or rather wxIMPLEMENT_WXWIN_MAIN) disable the
+    asserts in the applications compiled in the release build by calling this.
+    It does nothing if NDEBUG is not defined.
+ */
+#ifdef NDEBUG
+    #define wxDISABLE_ASSERTS_IN_RELEASE_BUILD() wxDisableAsserts()
+#else
+    #define wxDISABLE_ASSERTS_IN_RELEASE_BUILD()
+#endif
+

 #if wxDEBUG_LEVEL
 
 /*
     wxOnAssert() is used by the debugging macros defined below. Different
 #if wxDEBUG_LEVEL
 
 /*
     wxOnAssert() is used by the debugging macros defined below. Different

-    overloads are needed because these macros can be used with or without _T().
+    overloads are needed because these macros can be used with or without wxT().

 
     All of them are implemented in src/common/appcmn.cpp and unconditionally
     call wxTheAssertHandler so the caller must check that it is non-NULL
 
     All of them are implemented in src/common/appcmn.cpp and unconditionally
     call wxTheAssertHandler so the caller must check that it is non-NULL


@@ -156,34 +172,34 @@ inline void wxDisableAsserts() { wxSetAssertHandler(NULL); }
 #if wxUSE_UNICODE
 
 // these overloads are the ones typically used by debugging macros: we have to
 #if wxUSE_UNICODE
 
 // these overloads are the ones typically used by debugging macros: we have to

-// provide wxChar* msg version because it's common to use _T() in the macros
+// provide wxChar* msg version because it's common to use wxT() in the macros

 // and finally, we can't use const wx(char)* msg = NULL, because that would
 // be ambiguous
 //
 // also notice that these functions can't be inline as wxString is not defined
 // yet (and can't be as wxString code itself may use assertions)
 // and finally, we can't use const wx(char)* msg = NULL, because that would
 // be ambiguous
 //
 // also notice that these functions can't be inline as wxString is not defined
 // yet (and can't be as wxString code itself may use assertions)

-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,

                                         int line,
                                         const char *func,
                                         const char *cond);
 
                                         int line,
                                         const char *func,
                                         const char *cond);
 

-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,

                                         int line,
                                         const char *func,
                                         const char *cond,
                                         const char *msg);
 
                                         int line,
                                         const char *func,
                                         const char *cond,
                                         const char *msg);
 

-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,

                                         int line,
                                         const char *func,
                                         const char *cond,
                                         int line,
                                         const char *func,
                                         const char *cond,

-                                        const wxChar *msg);
+                                        const wxChar *msg) ;

 #endif /* wxUSE_UNICODE */
 
 // this version is for compatibility with wx 2.8 Unicode build only, we don't
 // use it ourselves any more except in ANSI-only build in which case it is all
 // we need
 #endif /* wxUSE_UNICODE */
 
 // this version is for compatibility with wx 2.8 Unicode build only, we don't
 // use it ourselves any more except in ANSI-only build in which case it is all
 // we need

-extern void WXDLLIMPEXP_BASE wxOnAssert(const wxChar *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const wxChar *file,

                                         int line,
                                         const char *func,
                                         const wxChar *cond,
                                         int line,
                                         const char *func,
                                         const wxChar *cond,


@@ -192,24 +208,24 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const wxChar *file,
 // these overloads work when msg passed to debug macro is a string and we
 // also have to provide wxCStrData overload to resolve ambiguity which would
 // otherwise arise from wxASSERT( s.c_str() )
 // these overloads work when msg passed to debug macro is a string and we
 // also have to provide wxCStrData overload to resolve ambiguity which would
 // otherwise arise from wxASSERT( s.c_str() )

-extern void WXDLLIMPEXP_BASE wxOnAssert(const wxString& file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const wxString& file,

                                         int line,
                                         const wxString& func,
                                         const wxString& cond,
                                         const wxString& msg);
 
                                         int line,
                                         const wxString& func,
                                         const wxString& cond,
                                         const wxString& msg);
 

-extern void WXDLLIMPEXP_BASE wxOnAssert(const wxString& file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const wxString& file,

                                         int line,
                                         const wxString& func,
                                         const wxString& cond);
 
                                         int line,
                                         const wxString& func,
                                         const wxString& cond);
 

-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,

                                         int line,
                                         const char *func,
                                         const char *cond,
                                         const wxCStrData& msg);
 
                                         int line,
                                         const char *func,
                                         const char *cond,
                                         const wxCStrData& msg);
 

-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,

                                         int line,
                                         const char *func,
                                         const char *cond,
                                         int line,
                                         const char *func,
                                         const char *cond,


@@ -235,22 +251,41 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
     this macro only does anything if wxDEBUG_LEVEL >= 2.
  */
 #if wxDEBUG_LEVEL
     this macro only does anything if wxDEBUG_LEVEL >= 2.
  */
 #if wxDEBUG_LEVEL

-    // call this function to break into the debugger unconditionally (assuming
-    // the program is running under debugger, of course)
-    extern void WXDLLIMPEXP_BASE wxTrap();
+    // wxTrap() can be used to break into the debugger unconditionally
+    // (assuming the program is running under debugger, of course).
+    //
+    // If possible, we prefer to define it as a macro rather than as a function
+    // to open the debugger at the position where we trapped and not inside the
+    // trap function itself which is not very useful.
+    #if wxCHECK_VISUALC_VERSION(7)
+        #define wxTrap() __debugbreak()
+    #else
+        extern WXDLLIMPEXP_BASE void wxTrap();
+    #endif // Win VisualC

 
 

-    // assert checks if the condition is true and calls the assert handler with
-    // the provided message if it isn't
+    // Global flag used to indicate that assert macros should call wxTrap(): it
+    // is set by the default assert handler if the user answers yes to the
+    // question of whether to trap.
+    extern WXDLLIMPEXP_DATA_BASE(bool) wxTrapInAssert;
+
+    // This macro checks if the condition is true and calls the assert handler
+    // with the provided message if it isn't and finally traps if the special
+    // flag indicating that it should do it was set by the handler.

     //
     //

-    // NB: the macro is defined like this to ensure that nested if/else
-    //     statements containing it are compiled in the same way whether it is
-    //     defined as empty or not; also notice that we can't use ";" instead
-    //     of "{}" as some compilers warn about "possible unwanted ;" then
+    // Notice that we don't use the handler return value for compatibility
+    // reasons (if we changed its return type, we'd need to change wxApp::
+    // OnAssertFailure() too which would break user code overriding it), hence
+    // the need for the ugly global flag.

     #define wxASSERT_MSG(cond, msg)                                           \
     #define wxASSERT_MSG(cond, msg)                                           \

-        if ( !wxTheAssertHandler || (cond) )                                  \
-        {}                                                                    \
-        else                                                                  \
-            wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__, #cond, msg)
+        wxSTATEMENT_MACRO_BEGIN                                               \
+            if ( wxTheAssertHandler && !(cond) &&                             \
+                    (wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__,           \
+                                #cond, msg), wxTrapInAssert) )                \
+            {                                                                 \
+                wxTrapInAssert = false;                                       \
+                wxTrap();                                                     \
+            }                                                                 \
+        wxSTATEMENT_MACRO_END

 
     // a version without any additional message, don't use unless condition
     // itself is fully self-explanatory
 
     // a version without any additional message, don't use unless condition
     // itself is fully self-explanatory


@@ -258,8 +293,17 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
 
     // wxFAIL is a special form of assert: it always triggers (and so is
     // usually used in normally unreachable code)
 
     // wxFAIL is a special form of assert: it always triggers (and so is
     // usually used in normally unreachable code)

-    #define wxFAIL_COND_MSG(cond, msg) \
-        wxOnAssert(__FILE__, __LINE__,  __WXFUNCTION__, cond, msg)
+    #define wxFAIL_COND_MSG(cond, msg)                                        \
+        wxSTATEMENT_MACRO_BEGIN                                               \
+            if ( wxTheAssertHandler &&                                        \
+                    (wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__,           \
+                                cond, msg), wxTrapInAssert) )                \
+            {                                                                 \
+                wxTrapInAssert = false;                                       \
+                wxTrap();                                                     \
+            }                                                                 \
+        wxSTATEMENT_MACRO_END
+

     #define wxFAIL_MSG(msg) wxFAIL_COND_MSG("Assert failure", msg)
     #define wxFAIL wxFAIL_MSG((const char*)NULL)
 #else // !wxDEBUG_LEVEL
     #define wxFAIL_MSG(msg) wxFAIL_COND_MSG("Assert failure", msg)
     #define wxFAIL wxFAIL_MSG((const char*)NULL)
 #else // !wxDEBUG_LEVEL


@@ -276,10 +320,17 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
     #define wxASSERT_LEVEL_2_MSG(cond, msg) wxASSERT_MSG(cond, msg)
     #define wxASSERT_LEVEL_2(cond) wxASSERT(cond)
 #else // wxDEBUG_LEVEL < 2
     #define wxASSERT_LEVEL_2_MSG(cond, msg) wxASSERT_MSG(cond, msg)
     #define wxASSERT_LEVEL_2(cond) wxASSERT(cond)
 #else // wxDEBUG_LEVEL < 2

-    #define wxASSERT_LEVEL_2_MSG
-    #define wxASSERT_LEVEL_2
+    #define wxASSERT_LEVEL_2_MSG(cond, msg)
+    #define wxASSERT_LEVEL_2(cond)

 #endif
 
 #endif
 

+// This is simply a wrapper for the standard abort() which is not available
+// under all platforms.
+//
+// It isn't really debug-related but there doesn't seem to be any better place
+// for it, so declare it here and define it in appbase.cpp, together with
+// wxTrap().
+extern void WXDLLIMPEXP_BASE wxAbort();

 
 /*
     wxCHECK macros always check their conditions, setting debug level to 0 only
 
 /*
     wxCHECK macros always check their conditions, setting debug level to 0 only


@@ -293,7 +344,7 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
         wxCHECK_RET( p != NULL, "pointer can't be NULL" )
 */
 
         wxCHECK_RET( p != NULL, "pointer can't be NULL" )
 */
 

-// the generic macro: takes the condition to check, the statement to be execute
+// the generic macro: takes the condition to check, the statement to be executed

 // in case the condition is false and the message to pass to the assert handler
 #define wxCHECK2_MSG(cond, op, msg)                                       \
     if ( cond )                                                           \
 // in case the condition is false and the message to pass to the assert handler
 #define wxCHECK2_MSG(cond, op, msg)                                       \
     if ( cond )                                                           \


@@ -361,6 +412,24 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
           unsigned int msg: expr; \
           wxMAKE_UNIQUE_ASSERT_NAME() { wxUnusedVar(msg); } \
         }
           unsigned int msg: expr; \
           wxMAKE_UNIQUE_ASSERT_NAME() { wxUnusedVar(msg); } \
         }

+#elif defined( __VMS )
+namespace wxdebug{
+
+// HP aCC cannot deal with missing names for template value parameters
+template <bool x> struct STATIC_ASSERTION_FAILURE;
+
+template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
+
+// HP aCC cannot deal with missing names for template value parameters
+template<int x> struct static_assert_test{};
+
+}
+    #define WX_JOIN( X, Y ) X##Y
+    #define WX_STATIC_ASSERT_BOOL_CAST(x) (bool)(x)
+    #define wxCOMPILE_TIME_ASSERT(expr, msg) \
+       typedef ::wxdebug::static_assert_test<\
+          sizeof(::wxdebug::STATIC_ASSERTION_FAILURE< WX_STATIC_ASSERT_BOOL_CAST( expr ) >)>\
+            WX_JOIN(wx_static_assert_typedef_, __LINE__)

 #else
     #define wxCOMPILE_TIME_ASSERT(expr, msg) \
         struct wxMAKE_UNIQUE_ASSERT_NAME { unsigned int msg: expr; }
 #else
     #define wxCOMPILE_TIME_ASSERT(expr, msg) \
         struct wxMAKE_UNIQUE_ASSERT_NAME { unsigned int msg: expr; }


@@ -393,10 +462,9 @@ extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
 /*
     Return true if we're running under debugger.
 
 /*
     Return true if we're running under debugger.
 

-    Currently this only really works under Win32 and Mac in CodeWarrior builds,
-    it always returns false in other cases.
+    Currently only really works under Win32 and just returns false elsewhere.

  */
  */

-#if defined(__WXMAC__) || defined(__WIN32__)
+#if defined(__WIN32__)

     extern bool WXDLLIMPEXP_BASE wxIsDebuggerRunning();
 #else // !Mac
     inline bool wxIsDebuggerRunning() { return false; }
     extern bool WXDLLIMPEXP_BASE wxIsDebuggerRunning();
 #else // !Mac
     inline bool wxIsDebuggerRunning() { return false; }