entity: finish adding non-erased constraints

Now only erased ones remain.

1 files changed, 5 insertions, 2 deletions

diff --git a/entity/constraints.hpp b/entity/constraints.hpp
index 171c555a..bc991dfc 100644
--- a/entity/constraints.hpp
+++ b/entity/constraints.hpp
@@ -13,11 +13,12 @@ template<typename T> struct range
     using limits = std::numeric_limits<T>;
     T min = limits::min(), max = limits::max();
 
-    constexpr operator erased_constraints::range() const;
+    constexpr operator erased_constraints::range() const noexcept;
+    constexpr operator std::pair<T, T>() const noexcept;
 };
 
 template<typename T>
-constexpr range<T>::operator erased_constraints::range() const
+constexpr range<T>::operator erased_constraints::range() const noexcept
 {
     using enum erased_constraints::range::type_;
     if constexpr (std::is_floating_point_v<T>)
@@ -29,6 +30,8 @@ constexpr range<T>::operator erased_constraints::range() const
     return { {}, {}, type_none };
 }
 
+template<typename T> constexpr range<T>::operator std::pair<T, T>() const noexcept { return { min, max }; }
+
 using length = erased_constraints::length;
 using group = erased_constraints::group;