GHC.HsToCore.PmCheck.Ppr

ghc-8.10.5: The GHC API

Safe Haskell | None
Language | Haskell2010

GHC.HsToCore.PmCheck.Ppr

Description

Provides factilities for pretty-printing `Delta`s in a way appropriate for user facing pattern match warnings.

Synopsis

- pprUncovered :: Delta -> [Id] -> SDoc

# Documentation

pprUncovered :: Delta -> [Id] -> SDoc #

Pretty-print the guts of an uncovered value vector abstraction, i.e., its components and refutable shapes associated to any mentioned variables.

Example for @([Just p, q], [p :-> [3,4], q :-> [0,5]]):

    (Just p) q
        where p is not one of {3, 4}
              q is not one of {0, 5}

When the set of refutable shapes contains more than 3 elements, the additional elements are indicated by "...".