Mercurial > urweb
view tests/gform.ur @ 1309:127561e4aef1
Documenting limits
author | Adam Chlipala <adam@chlipala.net> |
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date | Thu, 14 Oct 2010 11:54:54 -0400 (2010-10-14) |
parents | 71bafe66dbe1 |
children |
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con stringify = fold (fn nm :: Name => fn u :: Unit => fn t :: {Type} => [nm = string] ++ t) [] signature S = sig con rs :: {Unit} end signature S' = sig con rs :: {Unit} val handler : $(stringify rs) -> page val page : unit -> page end functor F (M : S) : S' where con rs = M.rs = struct con rs = M.rs val handler = fn x : $(stringify M.rs) => <html><body> {fold [fn rs :: {Unit} => $(stringify rs) -> xml body [] []] (fn nm :: Name => fn u :: Unit => fn rest :: {Unit} => fn f : $(stringify rest) -> xml body [] [] => fn x : $(stringify ([nm] ++ rest)) => <body><li> {cdata x.nm}</li> {f (x -- nm)}</body>) (fn x => <body></body>) [M.rs] x} </body></html> val page = fn () => <html><body> <lform> {fold [fn rs :: {Unit} => xml lform [] (stringify rs)] (fn nm :: Name => fn u :: Unit => fn rest :: {Unit} => fn frag : xml lform [] (stringify rest) => <lform><li> <textbox{nm}/></li> {useMore frag}</lform>) <lform></lform> [rs]} <submit action={handler}/> </lform> </body></html> end structure M = F(struct con rs = [A, B, C] end) open M