55 lines
2.3 KiB
C
55 lines
2.3 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/checkeddelete.h
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// Purpose: wxCHECKED_DELETE() macro
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// Author: Vadim Zeitlin
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// Created: 2009-02-03
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// RCS-ID: $Id$
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// Copyright: (c) 2002-2009 wxWidgets dev team
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_CHECKEDDELETE_H_
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#define _WX_CHECKEDDELETE_H_
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// TODO: provide wxCheckedDelete[Array]() template functions too
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// ----------------------------------------------------------------------------
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// wxCHECKED_DELETE and wxCHECKED_DELETE_ARRAY macros
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// ----------------------------------------------------------------------------
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/*
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checked deleters are used to make sure that the type being deleted is really
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a complete type.: otherwise sizeof() would result in a compile-time error
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do { ... } while ( 0 ) construct is used to have an anonymous scope
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(otherwise we could have name clashes between different "complete"s) but
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still force a semicolon after the macro
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*/
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#ifdef __WATCOMC__
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#define wxFOR_ONCE(name) for(int name=0; name<1; name++)
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#define wxPRE_NO_WARNING_SCOPE(name) wxFOR_ONCE(wxMAKE_UNIQUE_NAME(name))
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#define wxPOST_NO_WARNING_SCOPE(name)
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#else
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#define wxPRE_NO_WARNING_SCOPE(name) do
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#define wxPOST_NO_WARNING_SCOPE(name) while ( wxFalse )
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#endif
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#define wxCHECKED_DELETE(ptr) \
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wxPRE_NO_WARNING_SCOPE(scope_var1) \
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{ \
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typedef char complete[sizeof(*ptr)]; \
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delete ptr; \
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} wxPOST_NO_WARNING_SCOPE(scope_var1)
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#define wxCHECKED_DELETE_ARRAY(ptr) \
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wxPRE_NO_WARNING_SCOPE(scope_var2) \
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{ \
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typedef char complete[sizeof(*ptr)]; \
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delete [] ptr; \
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} wxPOST_NO_WARNING_SCOPE(scope_var2)
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#endif // _WX_CHECKEDDELETE_H_
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