| | 1 | /////////////////////////////////////////////////////////////////////////////// |
| | 2 | // Name: wx/checkeddelete.h |
| | 3 | // Purpose: wxCHECKED_DELETE() macro |
| | 4 | // Author: Vadim Zeitlin |
| | 5 | // Created: 2009-02-03 |
| | 6 | // RCS-ID: $Id$ |
| | 7 | // Copyright: (c) 2002-2009 wxWidgets dev team |
| | 8 | // Licence: wxWindows licence |
| | 9 | /////////////////////////////////////////////////////////////////////////////// |
| | 10 | |
| | 11 | #ifndef _WX_CHECKEDDELETE_H_ |
| | 12 | #define _WX_CHECKEDDELETE_H_ |
| | 13 | |
| | 14 | #include "wx/cpp.h" |
| | 15 | |
| | 16 | // TODO: provide wxCheckedDelete[Array]() template functions too |
| | 17 | |
| | 18 | // ---------------------------------------------------------------------------- |
| | 19 | // wxCHECKED_DELETE and wxCHECKED_DELETE_ARRAY macros |
| | 20 | // ---------------------------------------------------------------------------- |
| | 21 | |
| | 22 | /* |
| | 23 | checked deleters are used to make sure that the type being deleted is really |
| | 24 | a complete type.: otherwise sizeof() would result in a compile-time error |
| | 25 | |
| | 26 | do { ... } while ( 0 ) construct is used to have an anonymous scope |
| | 27 | (otherwise we could have name clashes between different "complete"s) but |
| | 28 | still force a semicolon after the macro |
| | 29 | */ |
| | 30 | |
| | 31 | #define wxCHECKED_DELETE(ptr) \ |
| | 32 | wxSTATEMENT_MACRO_BEGIN \ |
| | 33 | typedef char complete[sizeof(*ptr)]; \ |
| | 34 | delete ptr; \ |
| | 35 | wxSTATEMENT_MACRO_END |
| | 36 | |
| | 37 | #define wxCHECKED_DELETE_ARRAY(ptr) \ |
| | 38 | wxSTATEMENT_MACRO_BEGIN \ |
| | 39 | typedef char complete[sizeof(*ptr)]; \ |
| | 40 | delete [] ptr; \ |
| | 41 | wxSTATEMENT_MACRO_END |
| | 42 | |
| | 43 | |
| | 44 | #endif // _WX_CHECKEDDELETE_H_ |
| | 45 | |
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