Milena (Olena)
User documentation 2.0a Id
|
00001 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #ifndef MLN_CORE_INTERNAL_IMAGE_IDENTITY_HH 00027 # define MLN_CORE_INTERNAL_IMAGE_IDENTITY_HH 00028 00035 00036 # include <mln/core/internal/image_morpher.hh> 00037 00038 00039 namespace mln 00040 { 00041 00042 namespace internal 00043 { 00044 00045 00046 // Fastest. 00047 00048 template <typename trait_speed, typename I, typename E> 00049 struct image_identity_impl__fastest 00050 { 00051 // Nothing. 00052 }; 00053 00054 template <typename I, typename E> 00055 struct image_identity_impl__fastest< mln::trait::image::speed::fastest, I, E > 00056 { 00057 private: 00058 00059 mlc_const(I)& del_() const 00060 { 00061 return * internal::force_exact<const E>(*this).delegatee_(); 00062 } 00063 00064 I& del_() 00065 { 00066 return * internal::force_exact<E>(*this).delegatee_(); 00067 } 00068 00069 public: 00070 00071 int delta_index(const mln_deduce(I, psite, delta)& dp) const 00072 { 00073 return del_().delta_index(dp); 00074 } 00075 00076 mln_site(I) point_at_index(unsigned i) const 00077 { 00078 return del_().point_at_index(i); 00079 } 00080 00081 unsigned border() const 00082 { 00083 return del_().border(); 00084 } 00085 00086 mln_qlf_value(I)* buffer() 00087 { 00088 return del_().buffer(); 00089 } 00090 00091 const mln_value(I)* buffer() const 00092 { 00093 return del_().buffer(); 00094 } 00095 00096 mln_rvalue(I) element(unsigned i) const 00097 { 00098 return del_().element(i); 00099 } 00100 00101 mln_lvalue(I) element(unsigned i) 00102 { 00103 return del_().element(i); 00104 } 00105 00106 unsigned nelements() const 00107 { 00108 return del_().nelements(); 00109 } 00110 }; 00111 00112 // Facade. 00113 00114 template <typename I, typename E> 00115 struct image_identity_impl 00116 : image_identity_impl__fastest< mln_trait_image_speed(E), I, E > 00117 { 00118 }; 00119 00120 00121 00126 template <typename I, typename S, typename E> 00127 class image_identity 00128 : public image_identity_impl<I, E>, 00129 public image_morpher<I, mln_value(I), S, E> 00130 { 00131 public: 00132 00134 typedef mln_value(I) value; 00135 00137 typedef mln_rvalue(I) rvalue; 00138 00140 typedef mln_morpher_lvalue(I) lvalue; 00141 00143 rvalue operator()(const mln_psite(S)& p) const; 00144 00146 lvalue operator()(const mln_psite(S)& p); 00147 00148 // FIXME Matthieu: Doc! Cf. core/concept/doc/image 00149 const mln_domain(I)& domain() const; 00150 bool has(const mln_psite(I)& p) const; 00151 00152 protected: 00153 00155 image_identity(); 00156 }; 00157 00158 00159 00160 # ifndef MLN_INCLUDE_ONLY 00161 00162 template <typename I, typename S, typename E> 00163 inline 00164 image_identity<I, S, E>::image_identity() 00165 { 00166 } 00167 00168 template <typename I, typename S, typename E> 00169 inline 00170 mln_rvalue(I) 00171 image_identity<I, S, E>::operator()(const mln_psite(S)& p) const 00172 { 00173 mln_precondition(this->delegatee_() != 0); 00174 return this->delegatee_()->operator()(p); 00175 } 00176 00177 template <typename I, typename S, typename E> 00178 inline 00179 typename image_identity<I, S, E>::lvalue 00180 image_identity<I, S, E>::operator()(const mln_psite(S)& p) 00181 { 00182 mln_precondition(this->delegatee_() != 0); 00183 return this->delegatee_()->operator()(p); 00184 } 00185 00186 template <typename I, typename S, typename E> 00187 inline 00188 const mln_domain(I)& 00189 image_identity<I, S, E>::domain() const 00190 { 00191 mln_precondition(this->delegatee_() != 0); 00192 return this->delegatee_()->domain(); 00193 } 00194 00195 template <typename I, typename S, typename E> 00196 inline 00197 bool 00198 image_identity<I, S, E>::has(const mln_psite(I)& p) const 00199 { 00200 mln_precondition(this->delegatee_() != 0); 00201 return this->delegatee_()->has(p); 00202 } 00203 00204 # endif // ! MLN_INCLUDE_ONLY 00205 00206 } // end of namespace mln::internal 00207 00208 } // end of namespace mln 00209 00210 00211 #endif // ! MLN_CORE_INTERNAL_IMAGE_IDENTITY_HH