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//UNARYPRED
template<typename Type, typename F_PTR = int(*)(int)>
class PredicateFunction1
{
F_PTR d_fun;
public:
using argument_type = Type;
PredicateFunction1(F_PTR const &ptr)
:
d_fun(ptr)
{}
bool operator()(Type const &t) const
{
return d_fun(t);
}
};
//=
//BINPRED
template<typename Type1, typename Type2,
typename F_PTR = int(*)(Type1 const &t1, Type2 const &t2)>
class PredicateFunction2
{
F_PTR d_fun;
public:
using first_argument_type = Type1;
using second_argument_type = Type2;
using result_type = bool;
PredicateFunction2(F_PTR const &ptr)
:
d_fun(ptr)
{}
bool operator()(Type1 const &t1, Type2 const &t2) const
{
return d_fun(t1, t2);
}
};
//=
//PREDOBJ1
template <class Class, typename Type>
class PredicateObject1
{
Class &d_cl;
bool (Class::*d_member)(Type const &);
public:
using argument_type = Type;
PredicateObject1(Class &cl, bool (Class::*member)(Type const &) =
&Class::operator())
:
d_cl(cl),
d_member(member)
{}
PredicateObject1(Class *cl, bool (Class::*member)(Type const &) =
&Class::operator())
:
d_cl(*cl),
d_member(member)
{}
bool operator()(Type const &t) const
{
return (d_cl.*d_member)(t);
}
operator Class() const
{
return d_cl;
}
};
//=
//PREDOBJ2
template <class Class, typename Type1, typename Type2 = Type1>
class PredicateObject2
{
Class &d_cl;
bool (Class::*d_member)(Type1 const &, Type2 const &);
public:
using first_argument_type = Type1;
using second_argument_type = Type2;
using result_type = bool;
PredicateObject2(Class &cl,
bool (Class::*member)(Type1 const &, Type2 const &) =
&Class::operator())
:
d_cl(cl),
d_member(member)
{}
PredicateObject2(Class *cl,
bool (Class::*member)(Type1 const &, Type2 const &) =
&Class::operator())
:
d_cl(*cl),
d_member(member)
{}
bool operator()(Type1 const &t1, Type2 const &t2) const
{
return (d_cl.*d_member)(t1, t2);
}
operator Class() const
{
return d_cl;
}
};
//=
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