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view tests/buffer.ur @ 1251:70092a661f70
Basic handling of recursive functions in Iflow
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 01 May 2010 09:51:46 -0400 |
parents | 2197f0e24a9f |
children |
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datatype lines = End | Line of string * source lines type t = { Head : source lines, Tail : source (source lines) } val create = head <- source End; tail <- source head; return {Head = head, Tail = tail} fun renderL lines = case lines of End => <xml/> | Line (line, linesS) => <xml>{[line]}<br/><dyn signal={renderS linesS}/></xml> and renderS linesS = lines <- signal linesS; return (renderL lines) fun render t = renderS t.Head fun write t s = oldTail <- get t.Tail; newTail <- source End; set oldTail (Line (s, newTail)); set t.Tail newTail