diff options
Diffstat (limited to 'stdlib/source/library/lux/meta/compiler/phase.lux')
| -rw-r--r-- | stdlib/source/library/lux/meta/compiler/phase.lux | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/stdlib/source/library/lux/meta/compiler/phase.lux b/stdlib/source/library/lux/meta/compiler/phase.lux index 77574a4aa..dd87d5866 100644 --- a/stdlib/source/library/lux/meta/compiler/phase.lux +++ b/stdlib/source/library/lux/meta/compiler/phase.lux @@ -1,6 +1,6 @@ (.require [library - [lux (.except except with) + [lux (.except except with try) [abstract [functor (.only Functor)] [monad (.only Monad do)]] @@ -113,6 +113,18 @@ (at ..monad in []) (..except exception message))])) +(def .public (try it) + (All (_ state value) + (-> (Operation state value) + (Operation state (Try value)))) + (function (_ state) + (when (it state) + {try.#Success [state' it']} + {try.#Success [state' {try.#Success it'}]} + + {try.#Failure error} + {try.#Success [state {try.#Failure error}]}))) + (def .public identity (All (_ s a) (Phase s a a)) (function (_ archive input state) |