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Diffstat (limited to 'odb/tr1-pointer-traits.hxx')
-rw-r--r-- | odb/tr1-pointer-traits.hxx | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/odb/tr1-pointer-traits.hxx b/odb/tr1-pointer-traits.hxx new file mode 100644 index 0000000..edb5ce8 --- /dev/null +++ b/odb/tr1-pointer-traits.hxx @@ -0,0 +1,74 @@ +// file : odb/tr1-pointer-traits.hxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_TR1_POINTER_TRAITS_HXX +#define ODB_TR1_POINTER_TRAITS_HXX + +#include <odb/pre.hxx> + +// This header assumes that the necessary TR1 header has already +// been included. +// +#include <odb/pointer-traits.hxx> + +namespace odb +{ + // Specialization for std::tr1::shared_ptr. + // + template <typename T> + class pointer_traits< std::tr1::shared_ptr<T> > + { + public: + typedef T element_type; + typedef std::tr1::shared_ptr<element_type> pointer_type; + typedef smart_ptr_guard<pointer_type> guard_type; + + static element_type* + get_ptr (const pointer_type& p) + { + return p.get (); + } + + static element_type& + get_ref (const pointer_type& p) + { + return *p; + } + + static bool + null_ptr (const pointer_type& p) + { + return p.get () == 0; + } + + public: + static void* + allocate (std::size_t n) + { + return operator new (n); + } + + static void + free (void* p) + { + operator delete (p); + } + }; + + // Specialization for std::tr1::weak_ptr. + // + template <typename T> + class pointer_traits< std::tr1::weak_ptr<T> > + { + public: + typedef T element_type; + typedef std::tr1::weak_ptr<element_type> pointer_type; + typedef std::tr1::shared_ptr<element_type> strong_pointer_type; + }; +} + +#include <odb/post.hxx> + +#endif // ODB_TR1_POINTER_TRAITS_HXX |