[Olena-patches] 2959: Update Alex's mixin.

https://svn.lrde.epita.fr/svn/oln/trunk/milena/sandbox Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Update Alex's mixin. * abraham/mln/value/mixin.hh (F): Turn into plain type. (mixin): New methods. (operator<): New routine. * abraham/tests/value/mixin.cc: Update. mln/value/mixin.hh | 55 +++++++++++++++++++++++++++++++++++++++++++-------- tests/value/mixin.cc | 54 +++++++++++++++++++++++++++++++++++++++----------- 2 files changed, 90 insertions(+), 19 deletions(-) Index: abraham/tests/value/mixin.cc --- abraham/tests/value/mixin.cc (revision 2958) +++ abraham/tests/value/mixin.cc (working copy) @@ -39,26 +39,58 @@ namespace mln { - namespace value - { - template <unsigned int n> - struct op_less< mln::value::rgb<n> > +// namespace value +// { +// template <unsigned int n> +// struct op_less< mln::value::rgb<n> > +// { +// bool operator()(const mln::value::rgb<n> &a, const mln::value::rgb<n> &b) +// { +// return a.red() < b.red(); +// } +// }; +// } + + struct red_only { - bool operator()(const mln::value::rgb<n> &a, const mln::value::rgb<n> &b) + template <unsigned n> + bool less(const value::rgb<n>& a, const value::rgb<n>& b) { return a.red() < b.red(); } }; + } + + +template <typename T, typename A> +const T& my_violent_cast(const A& a) +{ + return *(const T*)(const void*)(&a); } + +template <typename T, typename A> +T& my_violent_cast(A& a) +{ + return *(T*)(void*)(&a); +} + + int main () { - mln::value::rgb8 r(12, 13, 14); - mln::value::rgb8 s(13, 14, 15); + using namespace mln; + + value::rgb8 r(12, 13, 14); + value::rgb8 s(13, 14, 15); + + typedef value::mixin<value::rgb8,red_only> Rgb; + + std::cout << ( my_violent_cast<Rgb>(r) < my_violent_cast<Rgb>(s) ) << std::endl; + - std::cout - << ( *(mln::value::mixin<mln::value::rgb8, mln::value::op_less>*)(void*) &r < - *(mln::value::mixin<mln::value::rgb8, mln::value::op_less>*)(void*) &s ) - << std::endl; +// std::cout +// << ( *(value::mixin<value::rgb8, value::op_less>*)(void*) &r < +// *(value::mixin<value::rgb8, value::op_less>*)(void*) &s ) +// << std::endl; } Index: abraham/mln/value/mixin.hh --- abraham/mln/value/mixin.hh (revision 2958) +++ abraham/mln/value/mixin.hh (working copy) @@ -35,16 +35,17 @@ namespace mln { + namespace value { - template <typename T, template <typename> class F> + template <typename T, typename F> struct mixin; } namespace trait { - template <typename T, template <typename> class F> + template <typename T, typename F> struct value_< mln::value::mixin<T, F> > : value_< T > // FIXME { @@ -52,23 +53,59 @@ } // end of namespace trait + namespace value { - template <typename T, template <typename> class F> - struct mixin : T, Value < mixin<T, F> >, internal::value_like_ <T, mln_enc(T), mixin<T, F>, mixin<T, F> > + template <typename T, typename F> + struct mixin : T // , Value < mixin<T, F> >, internal::value_like_ <T, mln_enc(T), mixin<T, F>, mixin<T, F> > + { + // typedef T value; + + mixin() + { + } + + mixin(const T& t) + : T(t) { - typedef T value; + } - // Ctor ? + mixin(const mixin& rhs) + : T(rhs) + { + } - // operator (T) (); + mixin& operator=(const mixin& rhs) + { + // FIXME: (?) Test if (this == &rhs)... + this->T::operator=(rhs); + return *this; + } + mixin& operator=(const T& t) + { + // FIXME: (?) Test if (this == &t)... + this->T::operator=(t); + return *this; + } }; + + } // end of namespace mln::value + + + template <typename T, typename F> + bool operator < (const value::mixin<T,F>& lhs, const value::mixin<T,F>& rhs) + { + static F f; + return f.less(lhs, rhs); } + + # ifndef MLN_INCLUDE_ONLY + /* namespace value { @@ -86,7 +123,7 @@ // Ctor - // template <typename T, template <typename> class F> + // template <typename T, typename F> // mixin<T, F>::operator(T)() // { // return (T)*this; @@ -94,6 +131,8 @@ } +*/ + /* template <typename F, typename I> std::ostream& operator<<(std::ostream& ostr, value::shell<F, I> &s)