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feat: add FunInfo.getArity

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This commit is contained in:
Leonardo de Moura 2021-09-14 15:58:00 -07:00
parent deea3996be
commit 736f119beb
1 changed files with 3 additions and 0 deletions
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3
src/Lean/Meta/FunInfo.lean
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@ -75,4 +75,7 @@ def getFunInfo (fn : Expr) : MetaM FunInfo :=
def getFunInfoNArgs (fn : Expr) (nargs : Nat) : MetaM FunInfo :=
getFunInfoAux fn (some nargs)
def FunInfo.getArity (info : FunInfo) : Nat :=
info.paramInfo.size
end Lean.Meta