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authorOscar NihlgÄrd <oscarnihlgard@gmail.com>2018-02-24 14:56:17 +0100
committerAndreas Rumpf <rumpf_a@web.de>2018-02-24 14:56:17 +0100
commite4515f304abf9b9ce029b634b38fce2a398a16fc (patch)
tree6d37b5c7fddaa27c4fdb1bf80b8c091dec80f383 /compiler/nimsets.nim
parentba6e11fc888c0e8171797f5af731e6ac6b16c8e6 (diff)
downloadNim-e4515f304abf9b9ce029b634b38fce2a398a16fc.tar.gz
Improve semchecking for duplicate cases in case statements (#7176)
* Improve semchecking for duplicate cases in case statements

* Revert to previous solution

* Improve test
Diffstat (limited to 'compiler/nimsets.nim')
-rw-r--r--compiler/nimsets.nim5
1 files changed, 5 insertions, 0 deletions
diff --git a/compiler/nimsets.nim b/compiler/nimsets.nim
index 94507adf0..bda753e85 100644
--- a/compiler/nimsets.nim
+++ b/compiler/nimsets.nim
@@ -151,6 +151,11 @@ proc complement*(a: PNode): PNode =
   for i in countup(0, high(x)): x[i] = not x[i]
   result = toTreeSet(x, a.typ, a.info)
 
+proc deduplicate*(a: PNode): PNode =
+  var x: TBitSet
+  toBitSet(a, x)
+  result = toTreeSet(x, a.typ, a.info)
+
 proc cardSet(s: PNode): BiggestInt =
   # here we can do better than converting it into a compact set
   # we just count the elements directly