Mercurial > urweb
diff src/reduce.sml @ 1122:85d194409b17
Reduce concatenations of the empty record; unpoly non-recursive functions
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Sun, 10 Jan 2010 13:44:22 -0500 |
parents | 0657e5adc938 |
children | 51e596feec37 |
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--- a/src/reduce.sml Sun Jan 10 10:40:57 2010 -0500 +++ b/src/reduce.sml Sun Jan 10 13:44:22 2010 -0500 @@ -291,6 +291,8 @@ case (#1 c1, #1 c2) of (CRecord (k, xcs1), CRecord (_, xcs2)) => (CRecord (kind env k, xcs1 @ xcs2), loc) + | (CRecord (_, []), _) => c2 + | (_, CRecord (_, [])) => c1 | _ => (CConcat (c1, c2), loc) end | CMap (dom, ran) => (CMap (kind env dom, kind env ran), loc)