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Fixed an error in sequential pattern matches #324

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Merged
dorchard merged 1 commit into from
Apr 20, 2026
Merged

Fixed an error in sequential pattern matches #324

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11 changes: 11 additions & 0 deletions frontend/tests/cases/positive/simple/case2.gr
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
caser : Int -> Int
caser n = case n of
0 -> 2;
1 -> 3;
2 -> 5;
5 -> 7;
3 -> 11;
n -> n

main : Int
main = caser 0 * caser 1 * caser 2 * caser 3 * caser 4 * caser 5 * caser 6
1 change: 1 addition & 0 deletions frontend/tests/cases/positive/simple/case2.gr.output
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
55440
8 changes: 4 additions & 4 deletions interpreter/src/Language/Granule/Interpreter/Eval.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -660,15 +660,15 @@ pmatchCBV ctxt ((PBox _ _ _ p, e):ps) v@(Val _ _ _ (Promote _ v')) = do
Just e -> return $ Just e
Nothing -> pmatchCBV ctxt ps v

pmatchCBV ctxt ((PInt _ _ _ n, e):ps) (Val _ _ _ (NumInt m)) =
pmatchCBV ctxt ((PInt _ _ _ n, e):ps) v@(Val _ _ _ (NumInt m)) =
if n == m
then return $ Just e
else pmatchCBV ctxt ps e
else pmatchCBV ctxt ps v

pmatchCBV ctxt ((PFloat _ _ _ n, e):ps) (Val _ _ _ (NumFloat m)) =
pmatchCBV ctxt ((PFloat _ _ _ n, e):ps) v@(Val _ _ _ (NumFloat m)) =
if n == m
then return $ Just e
else pmatchCBV ctxt ps e
else pmatchCBV ctxt ps v

pmatchCBV ctxt (_:ps) v = pmatchCBV ctxt ps v

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