X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d83eeece0ee86a3ad81096d894a560647cef0d3a..32485259c1342115488d219776dfebeb3d4d81b1:/include/wx/ptr_scpd.h

diff --git a/include/wx/ptr_scpd.h b/include/wx/ptr_scpd.h
index ff287cfad4..9f7c88de4b 100644
--- a/include/wx/ptr_scpd.h
+++ b/include/wx/ptr_scpd.h
@@ -10,8 +10,8 @@
 /////////////////////////////////////////////////////////////////////////////
 
 //  This class closely follows the implementation of the boost
-//  library scoped_ptr and is an adaption for c++ macro's in 
-//  the wxWindows project. The original authors of the boost
+//  library scoped_ptr and is an adaption for c++ macro's in
+//  the wxWidgets project. The original authors of the boost
 //  scoped_ptr are given below with their respective copyrights.
 
 //  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
@@ -39,19 +39,28 @@
    still force a semicolon after the macro
 */
 
+#ifdef __WATCOMC__
+    #define wxFOR_ONCE(name)              for(int name=0; name<1; name++)
+    #define wxPRE_NO_WARNING_SCOPE(name)  wxFOR_ONCE(wxMAKE_UNIQUE_NAME(name))
+    #define wxPOST_NO_WARNING_SCOPE(name)
+#else
+    #define wxPRE_NO_WARNING_SCOPE(name)  do
+    #define wxPOST_NO_WARNING_SCOPE(name) while ( 0 )
+#endif
+
 #define wxCHECKED_DELETE(ptr)                                                 \
-    do                                                                        \
+    wxPRE_NO_WARNING_SCOPE(scope_var1)                                        \
     {                                                                         \
         typedef char complete[sizeof(*ptr)];                                  \
         delete ptr;                                                           \
-    } while ( 0 )
+    } wxPOST_NO_WARNING_SCOPE(scope_var1)
 
 #define wxCHECKED_DELETE_ARRAY(ptr)                                           \
-    do                                                                        \
+    wxPRE_NO_WARNING_SCOPE(scope_var2)                                        \
     {                                                                         \
         typedef char complete[sizeof(*ptr)];                                  \
         delete [] ptr;                                                        \
-    } while ( 0 )
+    } wxPOST_NO_WARNING_SCOPE(scope_var2)
 
 /* These scoped pointers are *not* assignable and cannot be used
    within a container.  Look for wxDECLARE_SHARED_PTR for this
@@ -129,8 +138,8 @@ name::~name()                       \
 // this macro can be used for the most common case when you want to declare and
 // define the scoped pointer at the same time and want to use the standard
 // naming convention: auto pointer to Foo is called FooPtr
-#define wxDEFINE_SCOPED_PTR_TYPE(T)                                           \
-    wxDECLARE_SCOPED_PTR(T, T ## Ptr);                                        \
+#define wxDEFINE_SCOPED_PTR_TYPE(T)    \
+    wxDECLARE_SCOPED_PTR(T, T ## Ptr)  \
     wxDEFINE_SCOPED_PTR(T, T ## Ptr)
 
 // the same but for arrays instead of simple pointers
@@ -182,5 +191,32 @@ void name::reset(T * p){                \
     }                                   \
 }
 
+// ----------------------------------------------------------------------------
+// "Tied" scoped pointer: same as normal one but also sets the value of
+//                        some other variable to the pointer value
+// ----------------------------------------------------------------------------
+
+#define wxDEFINE_TIED_SCOPED_PTR_TYPE(T)                                      \
+    wxDEFINE_SCOPED_PTR_TYPE(T);                                              \
+    class T ## TiedPtr : public T ## Ptr                                      \
+    {                                                                         \
+    public:                                                                   \
+        T ## TiedPtr(T **pp, T *p)                                            \
+            : T ## Ptr(p), m_pp(pp)                                           \
+        {                                                                     \
+            m_pOld = *pp;                                                     \
+            *pp = p;                                                          \
+        }                                                                     \
+                                                                              \
+        ~ T ## TiedPtr()                                                      \
+        {                                                                     \
+            *m_pp = m_pOld;                                                   \
+        }                                                                     \
+                                                                              \
+    private:                                                                  \
+        T **m_pp;                                                             \
+        T *m_pOld;                                                            \
+    }
+
 #endif // __WX_SCOPED_POINTER__