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opt/value.hh
1 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
2 //
3 // This file is part of Olena.
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19 // instantiate templates or use macros or inline functions from this
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25 
26 #ifndef MLN_OPT_VALUE_HH
27 # define MLN_OPT_VALUE_HH
28 
32 
33 # include <mln/core/concept/image.hh>
34 # include <mln/trait/images.hh>
35 
36 namespace mln
37 {
38 
39  namespace opt
40  {
41 
42  template <typename I>
43  inline
44  mln_rvalue(I) value(const Image<I>& ima);
45 
46  template <typename I>
47  inline
48  mln_lvalue(I) value(Image<I>& ima);
49 
50 
51 # ifndef MLN_INCLUDE_ONLY
52 
53  namespace impl
54  {
55 
56  template <typename I>
57  inline
58  mln_rvalue(I) value_impl(trait::image::category::domain_morpher,
59  const Image<I>& ima)
60  {
61  return value(*exact(ima).delegatee_());
62  }
63 
64  template <typename I>
65  inline
66  mln_rvalue(I) value_impl(trait::image::category::any,
67  const Image<I>& ima)
68  {
69  mlc_is(mln_trait_image_value_storage(I),
70  trait::image::value_storage::singleton)::check();
71  return exact(ima).value_();
72  }
73 
74 
75 
76 
77  template <typename I>
78  inline
79  mln_lvalue(I) value_impl(trait::image::category::domain_morpher,
80  Image<I>& ima)
81  {
82  return value(*exact(ima).delegatee_());
83  }
84 
85  template <typename I>
86  inline
87  mln_lvalue(I) value_impl(trait::image::category::any,
88  Image<I>& ima)
89  {
90  mlc_is(mln_trait_image_value_storage(I),
91  trait::image::value_storage::singleton)::check();
92  return exact(ima).value_();
93  }
94  }
95 
96 
97  template <typename I>
98  inline
99  mln_rvalue(I) value(const Image<I>& ima)
100  {
101  return impl::value_impl(mln_trait_image_category(I)(), ima);
102  }
103 
104  template <typename I>
105  inline
106  mln_lvalue(I) value(Image<I>& ima)
107  {
108  return impl::value_impl(mln_trait_image_category(I)(), ima);
109  }
110 
111 
112 
113 
114 # endif // ! MLN_INCLUDE_ONLY
115 
116  } // end of namespace mln::opt
117 
118 } // end of namespace mln
119 
120 
121 #endif // ! MLN_OPT_VALUE_HH