Mercurial > urweb
diff tests/rpat.lac @ 175:b2d752455182
Elaborating record patterns
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Thu, 31 Jul 2008 13:08:57 -0400 |
| parents | |
| children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/rpat.lac Thu Jul 31 13:08:57 2008 -0400 @@ -0,0 +1,13 @@ +val f = fn x : {A : int} => case x of {A = _} => 0 +val f = fn x : {A : int} => case x of {A = _, ...} => 0 +val f = fn x : {A : int, B : int} => case x of {A = _, ...} => 0 +val f = fn x : {A : int, B : int} => case x of {A = 1, B = 2} => 0 | {A = _, ...} => 1 + +datatype t = A | B + +val f = fn x => case x of {A = A, B = 2} => 0 | {A = A, ...} => 0 | {A = B, ...} => 0 + +val f = fn x => case x of {A = {A = A, ...}, B = B} => 0 + | {B = A, ...} => 1 + | {A = {A = B, B = A}, B = B} => 2 + | {A = {A = B, B = B}, B = B} => 3