GHC.HsToCore.Pmc.Ppr

ghc-9.2.8: The GHC API

Safe Haskell | Safe-Inferred
Language | Haskell2010

GHC.HsToCore.Pmc.Ppr

Description

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

Synopsis

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

# Documentation

pprUncovered :: Nabla -> [Id] -> SDoc Source #

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 "...".