include/tools/weakbase.hxx

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  19
  20 #ifndef INCLUDED_TOOLS_WEAKBASE_HXX
  21 #define INCLUDED_TOOLS_WEAKBASE_HXX
  22
  23 #include <tools/weakbase.h>
  24
  25 /// see weakbase.h for documentation
  26
  27 namespace tools
  28 {
  29
  30 template< class reference_type >
  31 inline WeakReference< reference_type >::WeakReference()
  32 {
  33     mpWeakConnection = new WeakConnection;
  34 }
  35
  36 template< class reference_type >
  37 inline WeakReference< reference_type >::WeakReference( reference_type* pReference )
  38 {
  39     reset( pReference );
  40 }
  41
  42 template< class reference_type >
  43 inline WeakReference< reference_type >::WeakReference( const WeakReference< reference_type >& rWeakRef )
  44 {
  45     mpWeakConnection = rWeakRef.mpWeakConnection;
  46 }
  47
  48 template< class reference_type >
  49 inline WeakReference< reference_type >::WeakReference( WeakReference< reference_type >&& rWeakRef )
  50 {
  51     mpWeakConnection = std::move(rWeakRef.mpWeakConnection);
  52     rWeakRef.reset();
  53 }
  54
  55 template< class reference_type >
  56 inline bool WeakReference< reference_type >::is() const
  57 {
  58     return mpWeakConnection->mpReference != nullptr;
  59 }
  60
  61 template< class reference_type >
  62 inline reference_type * WeakReference< reference_type >::get() const
  63 {
  64     auto pWeakBase = mpWeakConnection->mpReference;
  65     if (!pWeakBase)
  66         return nullptr;
  67     assert(dynamic_cast<reference_type *>(pWeakBase));
  68     return static_cast<reference_type *>(pWeakBase);
  69 }
  70
  71 template< class reference_type >
  72 inline void WeakReference< reference_type >::reset( reference_type* pReference )
  73 {
  74     if( pReference )
  75         mpWeakConnection = pReference->getWeakConnection();
  76     else
  77         reset();
  78 }
  79
  80 template< class reference_type >
  81 inline void WeakReference< reference_type >::reset()
  82 {
  83     mpWeakConnection = new WeakConnection;
  84 }
  85
  86 template< class reference_type >
  87 inline reference_type * WeakReference< reference_type >::operator->() const
  88 {
  89     return get();
  90 }
  91
  92 template< class reference_type >
  93 inline bool WeakReference< reference_type >::operator==(const reference_type * pReferenceObject) const
  94 {
  95     return mpWeakConnection->mpReference == pReferenceObject;
  96 }
  97
  98 template< class reference_type >
  99 inline bool WeakReference< reference_type >::operator==(const WeakReference<reference_type> & handle) const
 100 {
 101     return mpWeakConnection == handle.mpWeakConnection;
 102 }
 103
 104 template< class reference_type >
 105 inline bool WeakReference< reference_type >::operator!=(const WeakReference<reference_type> & handle) const
 106 {
 107     return mpWeakConnection != handle.mpWeakConnection;
 108 }
 109
 110 template< class reference_type >
 111 inline bool WeakReference< reference_type >::operator<(const WeakReference<reference_type> & handle) const
 112 {
 113     return mpWeakConnection->mpReference < handle.mpWeakConnection->mpReference;
 114 }
 115
 116 template< class reference_type >
 117 inline bool WeakReference< reference_type >::operator>(const WeakReference<reference_type> & handle) const
 118 {
 119     return mpWeakConnection->mpReference > handle.mpWeakConnection->mpReference;
 120 }
 121
 122 template< class reference_type >
 123 inline WeakReference<reference_type>& WeakReference<reference_type>::operator= (
 124     const WeakReference<reference_type>& rReference)
 125 {
 126     if (&rReference != this)
 127         mpWeakConnection = rReference.mpWeakConnection;
 128     return *this;
 129 }
 130
 131 template< class reference_type >
 132 inline WeakReference<reference_type>& WeakReference<reference_type>::operator= (
 133     WeakReference<reference_type>&& rReference)
 134 {
 135     mpWeakConnection = std::move(rReference.mpWeakConnection);
 136     return *this;
 137 }
 138
 139 inline void WeakBase::clearWeak()
 140 {
 141     if( mpWeakConnection.is() )
 142         mpWeakConnection->mpReference = nullptr;
 143 }
 144
 145 inline WeakConnection* WeakBase::getWeakConnection()
 146 {
 147     if( !mpWeakConnection.is() )
 148         mpWeakConnection = new WeakConnection( this );
 149     return mpWeakConnection.get();
 150 }
 151
 152 }
 153
 154 #endif
 155
 156 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */