]>
git.saurik.com Git - wxWidgets.git/blob - include/wx/ptr_scpd.h
1 /////////////////////////////////////////////////////////////////////////////
3 // Purpose: scoped smart pointer class
4 // Author: Jesse Lovelace <jllovela@eos.ncsu.edu>
8 // Copyright: (c) Jesse Lovelace and original Boost authors (see below)
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
12 // This class closely follows the implementation of the boost
13 // library scoped_ptr and is an adaption for c++ macro's in
14 // the wxWindows project. The original authors of the boost
15 // scoped_ptr are given below with their respective copyrights.
17 // (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
18 // Copyright (c) 2001, 2002 Peter Dimov
20 // Permission to copy, use, modify, sell and distribute this software
21 // is granted provided this copyright notice appears in all copies.
22 // This software is provided "as is" without express or implied
23 // warranty, and with no claim as to its suitability for any purpose.
25 // See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation.
28 #ifndef __WX_SCOPED_POINTER__
29 #define __WX_SCOPED_POINTER__
34 checked deleters are used to make sure that the type being deleted is really
35 a complete type.: otherwise sizeof() would result in a compile-time error
37 do { ... } while ( 0 ) construct is used to have an anonymous scope
38 (otherwise we could have name clashes between different "complete"s) but
39 still force a semicolon after the macro
42 #define wxCHECKED_DELETE(ptr) \
45 typedef char complete[sizeof(*ptr)]; \
49 #define wxCHECKED_DELETE_ARRAY(ptr) \
52 typedef char complete[sizeof(*ptr)]; \
56 /* These scoped pointers are *not* assignable and cannot be used
57 within a container. Look for wxDECLARE_SHARED_PTR for this
60 In addition, the type being used *must* be complete at the time
61 that wxDEFINE_SCOPED_* is called or a compiler error will result.
62 This is because the class checks for the completeness of the type
67 #define wxDECLARE_SCOPED_PTR(T, name) \
74 name & operator=(name const &); \
77 wxEXPLICIT name(T * ptr = NULL) \
82 void reset(T * ptr = NULL) \
98 T & operator*() const \
100 wxASSERT(m_ptr != NULL); \
104 T * operator->() const \
106 wxASSERT(m_ptr != NULL); \
115 void swap(name & ot) \
117 T * tmp = ot.m_ptr; \
123 #define wxDEFINE_SCOPED_PTR(T, name)\
126 wxCHECKED_DELETE(m_ptr) \
129 #define wxDECLARE_SCOPED_ARRAY(T, name)\
134 name(name const &); \
135 name & operator=(name const &); \
138 wxEXPLICIT name(T * p = NULL) : m_ptr(p) \
142 void reset(T * p = NULL); \
144 T & operator[](long int i) const\
146 wxASSERT(m_ptr != NULL); \
156 void swap(name & ot) \
158 T * tmp = ot.m_ptr; \
164 #define wxDEFINE_SCOPED_ARRAY(T, name) \
167 wxCHECKED_DELETE_ARRAY(m_ptr) \
169 void name::reset(T * p){ \
172 wxCHECKED_DELETE_ARRAY(m_ptr); \