diff options
Diffstat (limited to 'stdlib/source/lux.lux')
| -rw-r--r-- | stdlib/source/lux.lux | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/stdlib/source/lux.lux b/stdlib/source/lux.lux index be6755ebe..d4e8efda6 100644 --- a/stdlib/source/lux.lux +++ b/stdlib/source/lux.lux @@ -5907,3 +5907,21 @@ _ (..fail (..wrong_syntax_error (name_of ..:let))))) + +(macro: #export (try tokens) + {#.doc (doc (case (try (risky_computation input)) + (#.Right success) + (do_something success) + + (#.Left error) + (recover_from_failure error)))} + (case tokens + (^ (list expression)) + (do meta_monad + [g!_ (gensym "g!_")] + (wrap (list (` ("lux try" + (.function ((~ g!_) (~ g!_)) + (~ expression))))))) + + _ + (..fail (..wrong_syntax_error (name_of ..try))))) |