-/////////////////////////////////////////////////////////////////////////////
-
-// This class closely follows the implementation 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.
-// Copyright (c) 2001, 2002 Peter Dimov
-//
-// Permission to copy, use, modify, sell and distribute this software
-// is granted provided this copyright notice appears in all copies.
-// This software is provided "as is" without express or implied
-// warranty, and with no claim as to its suitability for any purpose.
-//
-// See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation.
-//
-
-#ifndef __WX_SCOPED_POINTER__
-#define __WX_SCOPED_POINTER__
-
-#include "wx/defs.h"
-
-/*
- checked deleters are used to make sure that the type being deleted is really
- a complete type.: otherwise sizeof() would result in a compile-time error
-
- do { ... } while ( 0 ) construct is used to have an anonymous scope
- (otherwise we could have name clashes between different "complete"s) but
- 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 ( wxFalse )
-#endif
-
-#define wxCHECKED_DELETE(ptr) \
- wxPRE_NO_WARNING_SCOPE(scope_var1) \
- { \
- typedef char complete[sizeof(*ptr)]; \
- delete ptr; \
- } wxPOST_NO_WARNING_SCOPE(scope_var1)
-
-#define wxCHECKED_DELETE_ARRAY(ptr) \
- wxPRE_NO_WARNING_SCOPE(scope_var2) \
- { \
- typedef char complete[sizeof(*ptr)]; \
- delete [] ptr; \
- } 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
- functionality.
-
- In addition, the type being used *must* be complete at the time
- that wxDEFINE_SCOPED_* is called or a compiler error will result.
- This is because the class checks for the completeness of the type
- being used.
-*/
-
-
-#define wxDECLARE_SCOPED_PTR(T, name) \
-class name \
-{ \
-private: \
- T * m_ptr; \
- \
- name(name const &); \
- name & operator=(name const &); \
- \
-public: \
- wxEXPLICIT name(T * ptr = NULL) \
- : m_ptr(ptr) { } \
- \
- ~name(); \
- \
- void reset(T * ptr = NULL) \
- { \
- if (m_ptr != ptr) \
- { \
- delete m_ptr; \
- m_ptr = ptr; \
- } \
- } \
- \
- T *release() \
- { \
- T *ptr = m_ptr; \
- m_ptr = NULL; \
- return ptr; \
- } \
- \
- T & operator*() const \
- { \
- wxASSERT(m_ptr != NULL); \
- return *m_ptr; \
- } \
- \
- T * operator->() const \
- { \
- wxASSERT(m_ptr != NULL); \
- return m_ptr; \
- } \
- \
- T * get() const \
- { \
- return m_ptr; \
- } \
- \
- void swap(name & ot) \
- { \
- T * tmp = ot.m_ptr; \
- ot.m_ptr = m_ptr; \
- m_ptr = tmp; \
- } \
-};
-
-#define wxDEFINE_SCOPED_PTR(T, name)\
-name::~name() \
-{ \
- wxCHECKED_DELETE(m_ptr); \
-}
-
-// 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) \
- wxDEFINE_SCOPED_PTR(T, T ## Ptr)
-
-// the same but for arrays instead of simple pointers
-#define wxDECLARE_SCOPED_ARRAY(T, name)\
-class name \
-{ \
-private: \
- T * m_ptr; \
- name(name const &); \
- name & operator=(name const &); \
- \
-public: \
- wxEXPLICIT name(T * p = NULL) : m_ptr(p) \
- {} \
- \
- ~name(); \
- void reset(T * p = NULL); \
- \
- T & operator[](long int i) const\
- { \
- wxASSERT(m_ptr != NULL); \
- wxASSERT(i >= 0); \
- return m_ptr[i]; \
- } \
- \
- T * get() const \
- { \
- return m_ptr; \
- } \
- \
- void swap(name & ot) \
- { \
- T * tmp = ot.m_ptr; \
- ot.m_ptr = m_ptr; \
- m_ptr = tmp; \
- } \
-};
-
-#define wxDEFINE_SCOPED_ARRAY(T, name) \
-name::~name() \
-{ \
- wxCHECKED_DELETE_ARRAY(m_ptr); \
-} \
-void name::reset(T * p){ \
- if (m_ptr != p) \
- { \
- wxCHECKED_DELETE_ARRAY(m_ptr); \
- m_ptr = 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__
projects / wxWidgets.git / blobdiff