| Safe Haskell | None |
|---|---|
| Language | GHC2024 |
GHC.Core.TyCon.RecWalk
Contents
Synopsis
- data RecTcChecker
- initRecTc :: RecTcChecker
- defaultRecTcMaxBound :: Int
- setRecTcMaxBound :: Int -> RecTcChecker -> RecTcChecker
- checkRecTc :: RecTcChecker -> TyCon -> Maybe RecTcChecker
Recursion breaking
data RecTcChecker Source #
Keeps track of how many times we have unwrapped various TyCons,
to avoid falling into a loop.
See Note [Expanding newtypes and products].
Instances
| Outputable RecTcChecker Source # | |
Defined in GHC.Core.TyCon.RecWalk Methods ppr :: RecTcChecker -> SDoc Source # | |
initRecTc :: RecTcChecker Source #
Initialise a RecTcChecker with defaultRecTcMaxBound.
defaultRecTcMaxBound :: Int Source #
The default upper bound (100) for the number of times a RecTcChecker is
allowed to encounter each TyCon.
setRecTcMaxBound :: Int -> RecTcChecker -> RecTcChecker Source #
Change the upper bound for the number of times a RecTcChecker is allowed
to encounter each TyCon.
checkRecTc :: RecTcChecker -> TyCon -> Maybe RecTcChecker Source #