| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/checkeddelete.h |
| 3 | // Purpose: wxCHECKED_DELETE() macro |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Created: 2009-02-03 |
| 6 | // Copyright: (c) 2002-2009 wxWidgets dev team |
| 7 | // Licence: wxWindows licence |
| 8 | /////////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #ifndef _WX_CHECKEDDELETE_H_ |
| 11 | #define _WX_CHECKEDDELETE_H_ |
| 12 | |
| 13 | #include "wx/cpp.h" |
| 14 | |
| 15 | // TODO: provide wxCheckedDelete[Array]() template functions too |
| 16 | |
| 17 | // ---------------------------------------------------------------------------- |
| 18 | // wxCHECKED_DELETE and wxCHECKED_DELETE_ARRAY macros |
| 19 | // ---------------------------------------------------------------------------- |
| 20 | |
| 21 | /* |
| 22 | checked deleters are used to make sure that the type being deleted is really |
| 23 | a complete type.: otherwise sizeof() would result in a compile-time error |
| 24 | |
| 25 | do { ... } while ( 0 ) construct is used to have an anonymous scope |
| 26 | (otherwise we could have name clashes between different "complete"s) but |
| 27 | still force a semicolon after the macro |
| 28 | */ |
| 29 | |
| 30 | #define wxCHECKED_DELETE(ptr) \ |
| 31 | wxSTATEMENT_MACRO_BEGIN \ |
| 32 | typedef char complete[sizeof(*ptr)] WX_ATTRIBUTE_UNUSED; \ |
| 33 | delete ptr; \ |
| 34 | wxSTATEMENT_MACRO_END |
| 35 | |
| 36 | #define wxCHECKED_DELETE_ARRAY(ptr) \ |
| 37 | wxSTATEMENT_MACRO_BEGIN \ |
| 38 | typedef char complete[sizeof(*ptr)] WX_ATTRIBUTE_UNUSED; \ |
| 39 | delete [] ptr; \ |
| 40 | wxSTATEMENT_MACRO_END |
| 41 | |
| 42 | |
| 43 | #endif // _WX_CHECKEDDELETE_H_ |
| 44 | |