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c260f6c90e
Allow matching rather than unification, as long as it doesn't solve any metavariables on the way. I noticed a potential unification bug on the way, forgetting to update whether holes are solved when unifying argument lists.
19 lines
426 B
Plaintext
19 lines
426 B
Plaintext
data Nat : Type where
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Z : Nat
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S : Nat -> Nat
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plus : Nat -> Nat -> Nat
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plus Z $y = y
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plus (S $k) $y = S (plus k y)
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data Baz : Nat -> Type where
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AddThings : (x : Nat) -> (y : Nat) -> Baz (plus x y)
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addBaz : (x : Nat) -> Baz x -> Nat
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addBaz (plus x y) (AddThings _ _) = plus x y
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-- Can't unify because of the repeated argument
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addBaz4 : (x : Nat) -> Baz x -> Nat
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addBaz4 (plus _ _) (AddThings x x) = plus x x
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