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support cstring in case (#20130)

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* implement case for cstring

for now just converts to string on C backend

* custom implementation for cstring

* remove leftover

* revert even more

* add nil + fix packages weird variant literal bug

* update docs
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metagn 2022-09-01 19:10:00 +03:00 • committed by GitHub
commit a95b6391fd
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13 changed files with 126 additions and 18 deletions
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compiler/optimizer.nim
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@ -178,7 +178,7 @@ proc analyse(c: var Con; b: var BasicBlock; n: PNode) =
of nkCaseStmt:
let isExhaustive = skipTypes(n[0].typ,
abstractVarRange-{tyTypeDesc}).kind notin {tyFloat..tyFloat128, tyString} or
abstractVarRange-{tyTypeDesc}).kind notin {tyFloat..tyFloat128, tyString, tyCstring} or
n[^1].kind == nkElse
analyse(c, b, n[0])