Elaborating record patterns

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/rpat.lac b/tests/rpat.lac
new file mode 100644
index 00000000..6c4f9c5e
--- /dev/null
+++ b/tests/rpat.lac
@@ -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