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add splitKind to HaskKind
author
Adam Megacz
<megacz@cs.berkeley.edu>
Mon, 14 Mar 2011 22:10:13 +0000
(15:10 -0700)
committer
Adam Megacz
<megacz@cs.berkeley.edu>
Mon, 14 Mar 2011 22:10:13 +0000
(15:10 -0700)
src/HaskKinds.v
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diff --git
a/src/HaskKinds.v
b/src/HaskKinds.v
index
1452045
..
b5cc2ff
100644
(file)
--- a/
src/HaskKinds.v
+++ b/
src/HaskKinds.v
@@
-50,3
+50,10
@@
Instance KindEqDecidable : EqDecidable Kind.
destruct v2; try (right; intro q; inversion q; fail) ; left ; auto.
Defined.
destruct v2; try (right; intro q; inversion q; fail) ; left ; auto.
Defined.
+(* splits a kind into a list of arguments and a result *)
+Fixpoint splitKind (k:Kind) : ((list Kind) * Kind) :=
+ match k with
+ | a ⇛ b => let (args,res) := splitKind b in ((a::args),res)
+ | _ => (nil, k)
+ end.
+