Mercurial > urweb
diff tests/stuff.lac @ 12:d89477f07c1e
Fun with records
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Fri, 28 Mar 2008 17:34:57 -0400 |
parents | e97c6d335869 |
children |
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--- a/tests/stuff.lac Fri Mar 28 15:20:46 2008 -0400 +++ b/tests/stuff.lac Fri Mar 28 17:34:57 2008 -0400 @@ -16,3 +16,23 @@ val v1 = fn t :: Type => fn x : t => x val v2 = v1 [t :: Type -> t -> t] v1 + +val r = {X = v1, Y = v2} +val v1_again = r.X +val v2_again = r.Y + +val r2 = {X = {}, Y = v2, Z = {}} +val r2_X = r2.X +val r2_Y = r2.Y +val r2_Z = r2.Z + +val f = fn fs :: {Type} => fn x : $([X = {}] ++ fs) => x.X +val f2 = fn fs :: {Type} => fn x : $(fs ++ [X = {}]) => x.X +val f3 = fn fs :: {Type} => fn x : $([X = {}, Y = {Z : {}}] ++ fs) => x.X +val f4 = fn fs :: {Type} => fn x : $([X = {}, Y = {Z : {}}] ++ fs) => x.Y +val f5 = fn fs1 :: {Type} => fn fs2 :: {Type} => fn x : $(fs1 ++ [X = {}] ++ fs2) => x.X +val f6 = fn fs1 :: {Type} => fn fs2 :: {Type} => fn x : $(fs1 ++ [X = {}] ++ fs2 ++ [Y = {Z : {}}]) => x.X +val f7 = fn fs1 :: {Type} => fn fs2 :: {Type} => fn x : $(fs1 ++ [X = {}] ++ fs2 ++ [Y = {Z : {}}]) => x.Y + +val test = f [[Y = t :: Type -> t -> t, Z = {}]] r2 +val test = f7 [[Y = t :: Type -> t -> t]] [[Z = {}]] r2