[Olena-patches] milena r1085: add behavior to value types

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2007-09-07 Matthieu Garrigues &lt;garrigues.matthieu(a)lrde.epita.fr&gt; add behavior to value types * mln/value/int_u.hh: add interop to prop * mln/value/props.hh: add interop to prop * sandbox/garrigues/value_behavior.cc: try to implement behaviors mln/value/int_u.hh | 1 mln/value/props.hh | 1 sandbox/garrigues/value_behavior.cc | 103 ++++++++++++++++++++++++++++++++++++ 3 files changed, 105 insertions(+) Index: trunk/milena/mln/value/props.hh =================================================================== --- trunk/milena/mln/value/props.hh (revision 1084) +++ trunk/milena/mln/value/props.hh (revision 1085) @@ -31,6 +31,7 @@ /*! \file mln/value/props.hh * * \brief Define properties of value types. + * FIXME : add interop typedef in each props */ # include <climits> Index: trunk/milena/mln/value/int_u.hh =================================================================== --- trunk/milena/mln/value/int_u.hh (revision 1084) +++ trunk/milena/mln/value/int_u.hh (revision 1085) @@ -103,6 +103,7 @@ static const unsigned nbits = n; typedef data_kind kind; typedef float sum; + typedef int interop; }; Index: trunk/milena/sandbox/garrigues/value_behavior.cc =================================================================== --- trunk/milena/sandbox/garrigues/value_behavior.cc (revision 0) +++ trunk/milena/sandbox/garrigues/value_behavior.cc (revision 1085) @@ -0,0 +1,103 @@ +# include <mln/value/int_u8.hh> +# include <mln/value/props.hh> + +using mln::value::props; + +/// Get the iterop type of a value type +# define mln_interop(I) typename mln::value::props<I>::interop + +// value_type behavior +template<typename V, template<typename> class B > +struct behave : V +{ + typedef B<V> behavior; + typedef V value; + + behave(const typename behavior::to_compute v) + { + this->v_ = behavior::compute(v); + } + + V& + operator= (const typename behavior::to_compute& v) + { + this->v_ = behavior::compute(v); + } + + V& + operator+= (const typename behavior::to_compute& v) + { + this->v_ = behavior::compute(this->v_ + v); + } + + V& + operator-= (const typename behavior::to_compute& v) + { + this->v_ = behavior::compute(this->v_ - v); + } + +}; + +template<typename V> +struct saturated +{ + typedef V val; + + typedef mln_interop(val) to_compute; + + static val compute(to_compute n) + { + if (props<val>::min() > n) + return props<val>::min(); + if (props<val>::max() < n) + return props<val>::max(); + return n; + } + +}; + +// template<typename V> +// struct round +// { +// typedef V val; +// // to_compute ? int or float? +// typedef mln_interop(val) to_compute; +// static val compute(to_compute n) +// { +// if (props<val>::min() > n) +// return props<val>::min(); +// if (props<val>::max() < n) +// return props<val>::max(); +// return n; +// } + +// }; + +int main() +{ + + typedef behave<mln::value::int_u8, saturated> my_u8_sat; + typedef behave<mln::value::int_u<3>, saturated> my_u3_sat; + + my_u8_sat i=259; + std::cout << i << std::endl; + i += 10; + std::cout << i << std::endl; + + i -= 5; + std::cout << i << std::endl; + + i -= 500; + std::cout << i << std::endl; + std::cout << std::endl; + + + my_u3_sat j = -5000; + std::cout << j << std::endl; + j = 2; + std::cout << j << std::endl; + j = 3; + std::cout << j << std::endl; + j = 11; + std::cout << j << std::endl; +}