Idris.Coverage

Documentation

genClauses :: FC -> Name -> [([Name], Term)] -> [PTerm] -> Idris [PTerm]

Given a list of LHSs, generate a extra clauses which cover the remaining cases. The ones which haven't been provided are marked absurd so that the checker will make sure they can't happen.

This will only work after the given clauses have been typechecked and the names are fully explicit!

validCoverageCase :: Context -> Err -> Bool

Does this error result rule out a case as valid when coverage checking?

recoverableCoverage :: Context -> Err -> Bool

Check whether an error is recoverable in the sense needed for coverage checking.

mkPatTm :: PTerm -> Idris Term

Generate a pattern from an impossible LHS.

We need this to eliminate the pattern clauses which have been provided explicitly from new clause generation.