Ur/Web: tests/cookie.ur annotate

Add a new scoping check for unification variables, to fix a type inference bug

author	Adam Chlipala <adam@chlipala.net>
date	Sun, 18 Dec 2011 11:29:13 -0500
parents	1626dcba13ee
children

rev	line source
adamc@459	1 cookie c : string
adamc@459	2
adamc@466	3 fun other () =
adamc@463	4 so <- getCookie c;
adamc@459	5 case so of
adamc@459	6 None => return <xml>No cookie</xml>
adamc@459	7 \| Some s => return <xml>Cookie: {[s]}</xml>
adamc@466	8
adamc@466	9 structure M = struct
adamc@466	10 fun aux () =
adamc@466	11 setCookie c "Hi";
adamc@466	12 so <- getCookie c;
adamc@466	13 case so of
adamc@466	14 None => return <xml>No cookie</xml>
adamc@466	15 \| Some s => return <xml><body>Cookie: {[s]}<br/>
adamc@466	16 <a link={other ()}>Other</a></body></xml>
adamc@466	17 end
adamc@466	18
adamc@466	19 fun main () : transaction page = return <xml><body>
adamc@466	20 <a link={other ()}>Other</a><br/>
adamc@466	21 <a link={M.aux ()}>Aux</a><br/>
adamc@466	22 </body></xml>

Mercurial > urweb