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Simplify Construct_array and add version for non-variadic compilers

This commit is contained in:
Simon Giraudot 2017-01-27 15:20:49 +01:00
parent ffd7af06ef
commit df5cf3e5b1
1 changed files with 59 additions and 10 deletions
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69
STL_Extension/include/CGAL/array.h
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@ -46,16 +46,6 @@ namespace cpp0x = cpp11;
using cpp11::array; using cpp11::array;
struct Construct_array
{
template <typename T, typename... Args>
cpp11::array<T, 1 + sizeof...(Args)> operator()(const T& t, const Args& ... args)
{
cpp11::array< T, 1 + sizeof...(Args) > a = { { t, static_cast<T>(args)... } };
return a;
}
};
// The make_array() function simply constructs an std::array. // The make_array() function simply constructs an std::array.
// It is needed for cases where a std::array is used as a class data // It is needed for cases where a std::array is used as a class data
// member and you want to initialize it in the member initializers list. // member and you want to initialize it in the member initializers list.
@ -94,6 +84,17 @@ make_array(const T & t, const Args & ... args)
return a; return a;
} }
// Functor version
struct Construct_array
{
template <typename T, typename... Args>
cpp11::array<T, 1 + sizeof...(Args)> operator()(const T& t, const Args& ... args)
{
return make_array (t, args...);
}
};
#else // CGAL_CFG_NO_CPP0X_VARIADIC_TEMPLATES #else // CGAL_CFG_NO_CPP0X_VARIADIC_TEMPLATES
template < typename T > inline template < typename T > inline
@ -145,6 +146,54 @@ make_array(const T& b1, const T& b2, const T& b3, const T& b4, const T& b5,
return a; return a;
} }
// Functor version
struct Construct_array
{
template < typename T >
cpp11::array<T, 1>
operator()(const T& b1)
{
return make_array (b1);
}
template < typename T >
cpp11::array<T, 2>
operator()(const T& b1, const T& b2)
{
return make_array (b1, b2);
}
template < typename T >
cpp11::array<T, 3>
operator()(const T& b1, const T& b2, const T& b3)
{
return make_array (b1, b2, b3);
}
template < typename T >
cpp11::array<T, 4>
operator()(const T& b1, const T& b2, const T& b3, const T& b4)
{
return make_array (b1, b2, b3, b4);
}
template < typename T >
cpp11::array<T, 5>
operator()(const T& b1, const T& b2, const T& b3, const T& b4, const T& b5)
{
return make_array (b1, b2, b3, b4, b5);
}
template < typename T >
cpp11::array<T, 6>
operator()(const T& b1, const T& b2, const T& b3, const T& b4, const T& b5,
const T& b6)
{
return make_array (b1, b2, b3, b4, b5, b6);
}
};
#endif // CGAL_CFG_NO_CPP0X_VARIADIC_TEMPLATES #endif // CGAL_CFG_NO_CPP0X_VARIADIC_TEMPLATES
} //namespace CGAL } //namespace CGAL