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accumulator/print.hh
1 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_TRAIT_ACCUMULATOR_PRINT_HH
27 # define MLN_TRAIT_ACCUMULATOR_PRINT_HH
28 
32 
33 # include <iostream>
34 # include <mln/trait/accumulators.hh>
35 # include <mln/metal/is_a.hh>
36 
37 
38 
39 namespace mln
40 {
41 
42  // Forward declaration.
43  template <typename E> struct Accumulator;
44 
45 
46  namespace trait
47  {
48 
49  namespace accumulator
50  {
51 
52  template <typename A>
53  void print(std::ostream& ostr = std::cout);
54 
55  template <typename A>
56  void print(const Accumulator<A>& ima, std::ostream& ostr = std::cout);
57 
58 
59 # ifndef MLN_INCLUDE_ONLY
60 
61  template <typename A>
62  inline
63  void print(std::ostream& ostr)
64  {
65  mlc_is_a(A, Accumulator)::check();
66  typedef mln::trait::accumulator_<A> the;
67  ostr << "{ "
68  << typename the::has_untake().name() << ", "
69  << typename the::has_stop().name() << ", "
70  << typename the::has_set_value().name() << ", "
71  << typename the::when_pix().name() << " }" << std::endl;
72  }
73 
74  template <typename A>
75  inline
76  void print(const Accumulator<A>&, std::ostream& ostr)
77  {
78  print<A>(ostr);
79  }
80 
81 # endif // ! MLN_INCLUDE_ONLY
82 
83  } // end of namespace mln::trait::accumulator
84 
85  } // end of namespace mln::trait
86 
87 } // end of namespace mln
88 
89 
90 #endif // ! MLN_TRAIT_ACCUMULATOR_PRINT_HH