diff options
-rw-r--r-- | lib/ur/top.ur | 7 | ||||
-rw-r--r-- | lib/ur/top.urs | 4 |
2 files changed, 11 insertions, 0 deletions
diff --git a/lib/ur/top.ur b/lib/ur/top.ur index 6c6c896c..02567917 100644 --- a/lib/ur/top.ur +++ b/lib/ur/top.ur @@ -179,6 +179,13 @@ fun mapUX [tf :: Type] [ctx :: {Unit}] <xml>{f [nm] [rest] r}{acc}</xml>) <xml/> +fun mapUX_rev [tf :: Type] [ctx :: {Unit}] + (f : nm :: Name -> rest :: {Unit} -> [[nm] ~ rest] => tf -> xml ctx [] []) = + @@foldR [fn _ => tf] [fn _ => xml ctx [] []] + (fn [nm :: Name] [u :: Unit] [rest :: {Unit}] [[nm] ~ rest] r acc => + <xml>{acc}{f [nm] [rest] r}</xml>) + <xml/> + fun mapX [K] [tf :: K -> Type] [ctx :: {Unit}] (f : nm :: Name -> t :: K -> rest :: {K} -> [[nm] ~ rest] => diff --git a/lib/ur/top.urs b/lib/ur/top.urs index 8273db0c..ec098955 100644 --- a/lib/ur/top.urs +++ b/lib/ur/top.urs @@ -126,6 +126,10 @@ val mapUX : tf :: Type -> ctx :: {Unit} -> (nm :: Name -> rest :: {Unit} -> [[nm] ~ rest] => tf -> xml ctx [] []) -> r ::: {Unit} -> folder r -> $(mapU tf r) -> xml ctx [] [] +val mapUX_rev : tf :: Type -> ctx :: {Unit} + -> (nm :: Name -> rest :: {Unit} -> [[nm] ~ rest] => + tf -> xml ctx [] []) + -> r ::: {Unit} -> folder r -> $(mapU tf r) -> xml ctx [] [] (* Generate some XML by mapping over a heterogenously-typed record *) val mapX : K --> tf :: (K -> Type) -> ctx :: {Unit} |