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📝 diffComparableTerms.

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This commit is contained in:
Rob Rix 2016-08-04 12:48:27 -04:00
parent 9374ed5a4a
commit 26b5f5b41b
1 changed files with 1 additions and 0 deletions
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src/Interpreter.hs
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@ -34,6 +34,7 @@ diffTerms :: (Eq leaf, Hashable leaf, Eq (Record fields), HasField fields Catego
-> Diff leaf (Record fields)
diffTerms construct comparable cost a b = fromMaybe (replacing a b) $ diffComparableTerms construct comparable cost a b
-- | Diff two terms recursively, given functions characterizing the diffing. If the terms are incomparable, returns 'Nothing'.
diffComparableTerms :: (Eq leaf, Hashable leaf, Eq (Record fields), HasField fields Category) => DiffConstructor leaf (Record fields) -> Comparable leaf (Record fields) -> SES.Cost (Diff leaf (Record fields)) -> Term leaf (Record fields) -> Term leaf (Record fields) -> Maybe (Diff leaf (Record fields))
diffComparableTerms construct comparable cost = recur
where recur a b