Mercurial > urweb
annotate tests/updateErr.ur @ 1808:90ebfac7e1a3
Better error message for funky command lines
author | Adam Chlipala <adam@chlipala.net> |
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date | Sat, 18 Aug 2012 13:51:41 -0400 |
parents | 7c6b6c3c7b79 |
children | abb0e95dcaa1 |
rev | line source |
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adamc@729 | 1 fun main () : transaction page = |
adamc@729 | 2 s <- source ""; |
adamc@729 | 3 b <- Buffer.create; |
adamc@729 | 4 txt <- source ""; |
adamc@729 | 5 |
adamc@729 | 6 return <xml><body onload={onError (fn xml => Buffer.write b (show xml)); |
adamc@729 | 7 onFail (fn s => alert ("FAIL! " ^ s))}> |
adamc@729 | 8 <dyn signal={s <- signal s; return <xml>{[s]}</xml>}/><br/> |
adamc@729 | 9 <dyn signal={s <- signal s; if s = "" then return <xml>Init</xml> else error <xml>Crapky</xml>}/><br/> |
adamc@729 | 10 <dyn signal={s <- signal s; return <xml>"{[s]}"</xml>}/><br/> |
adamc@729 | 11 |
adamc@729 | 12 <ctextbox source={txt}/> <button onclick={s' <- get txt; set s s'; set txt ""}/> |
adamc@729 | 13 |
adamc@729 | 14 <hr/> |
adamc@729 | 15 |
adamc@729 | 16 <dyn signal={Buffer.render b}/> |
adamc@729 | 17 </body></xml> |