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SbLazyPimplPtr.h
1 #ifndef COIN_SBLAZYPIMPLPTR_H
2 #define COIN_SBLAZYPIMPLPTR_H
3 
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35 
36 // The SbLazyPimplPtr<> class is loosely based on the boost::pimpl_ptr<>-
37 // proposal of 2005 by Asger Mangaard.
38 //
39 // It is reimplemented here as separate classes, not with policy-based
40 // templates, because we still try to support compilers that don't support
41 // template templates (e.g. Visual C++ 6).
42 //
43 // See also SbPimplPtr<>, our implementation of the immediate-creation
44 // policy.
45 
46 #include <Inventor/SbBasic.h>
47 
48 /* ********************************************************************** */
49 
50 #if defined(_MSC_VER) && (_MSC_VER < 1400) /* MSVC <8 */
51 #pragma warning(push)
52 #pragma warning(disable:4251) // for DLL-interface warning
53 #endif /* MSVC <8 */
54 
55 template <class T>
56 class COIN_DLL_API SbLazyPimplPtr {
57 public:
58  SbLazyPimplPtr(void);
59  SbLazyPimplPtr(T * initial);
60  SbLazyPimplPtr(const SbLazyPimplPtr<T> & copy);
61  ~SbLazyPimplPtr(void);
62 
63  void set(T * value);
64  T & get(void) const;
65 
66  SbLazyPimplPtr<T> & operator = (const SbLazyPimplPtr<T> & copy);
67 
68  SbBool operator == (const SbLazyPimplPtr<T> & rhs) const;
69  SbBool operator != (const SbLazyPimplPtr<T> & rhs) const;
70 
71  const T * operator -> (void) const;
72  T * operator -> (void);
73 
74 protected:
75  T * getNew(void) const;
76 
77 protected:
78  mutable T * ptr;
79 
80 }; // SbLazyPimplPtr
81 
82 #ifdef COIN_INTERNAL
83 // the implementation is in the .hpp class
84 #include <Inventor/tools/SbLazyPimplPtr.hpp>
85 #endif // COIN_INTERNAL
86 
87 #if defined(_MSC_VER) && (_MSC_VER < 1400) /* MSVC <8 */
88 #pragma warning(pop)
89 #endif /* MSVC <8 */
90 
91 /* ********************************************************************** */
92 
93 #endif // !COIN_SBLAZYPIMPLPTR_H
Definition: SbLazyPimplPtr.h:56