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p_transformed_piter.hh
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26 
27 #ifndef MLN_CORE_SITE_SET_P_TRANSFORMED_PITER_HH
28 # define MLN_CORE_SITE_SET_P_TRANSFORMED_PITER_HH
29 
33 
34 # include <mln/core/internal/site_set_iterator_base.hh>
35 # include <mln/core/site_set/p_transformed.hh>
36 # include <mln/convert/to.hh>
37 
38 
39 namespace mln
40 {
41 
42 
51  template <typename Pi, typename S, typename F>
53  : public internal::site_set_iterator_base< p_transformed<S,F>, // Site_Set.
54  p_transformed_piter<Pi,S,F> > // Exact.
55  {
58 
61 
64  bool is_valid_() const;
65 
67  void invalidate_();
68 
70  void start_();
71 
73  void next_();
75 
77  void change_target(const p_transformed<S,F>& s);
78 
79  private:
82 
83  protected:
84  using super_::s_;
85  using super_::p_;
86 
87  // The underlying site iterator.
88  Pi pi_;
89  };
90 
91 
92 
93 # ifndef MLN_INCLUDE_ONLY
94 
95  template <typename Pi, typename S, typename F>
96  inline
98  {
99  }
100 
101  template <typename Pi, typename S, typename F>
102  inline
103  p_transformed_piter<Pi,S,F>::p_transformed_piter(const p_transformed<S,F>& s)
104  {
105  this->change_target(s);
106  }
107 
108  template <typename Pi, typename S, typename F>
109  inline
110  bool
112  {
113  return pi_.is_valid();
114  }
115 
116  template <typename Pi, typename S, typename F>
117  inline
118  void
120  {
121  pi_.invalidate();
122  }
123 
124  template <typename Pi, typename S, typename F>
125  inline
126  void
128  {
129  pi_.start();
130  if (pi_.is_valid())
131  p_ = s_->function()(convert::to<mln_argument(F)>(pi_));
132  }
133 
134  template <typename Pi, typename S, typename F>
135  inline
136  void
138  {
139  pi_.next();
140  if (pi_.is_valid())
141  p_ = s_->function()(convert::to<mln_argument(F)>(pi_));
142  }
143 
144  template <typename Pi, typename S, typename F>
145  inline
146  void
147  p_transformed_piter<Pi,S,F>::change_target(const p_transformed<S,F>& s)
148  {
149  s_ = & s;
150  // p might be also updated since it can hold a pointer towards
151  // the set it designates, so:
152  pi_.change_target(s.primary_set());
153  // Last:
154  this->invalidate();
155  }
156 
157 # endif // ! MLN_INCLUDE_ONLY
158 
159 } // end of namespace mln
160 
161 
162 #endif // ! MLN_CORE_SITE_SET_P_TRANSFORMED_PITER_HH