Safe Haskell | None |
---|---|
Language | Haskell2010 |
- data Hopefully a wX wY
- = Hopefully (SimpleHopefully a wX wY)
- | Hashed String (SimpleHopefully a wX wY)
- data SimpleHopefully a wX wY
- = Actually (a wX wY)
- | Unavailable String
- data PatchInfoAnd p wA wB = PIAP !PatchInfo (Hopefully (Named p) wA wB)
- data WPatchInfo wA wB
- unWPatchInfo :: WPatchInfo wA wB -> PatchInfo
- compareWPatchInfo :: WPatchInfo wA wB -> WPatchInfo wC wD -> EqCheck (wA, wB) (wC, wD)
- piap :: PatchInfo -> Named p wA wB -> PatchInfoAnd p wA wB
- n2pia :: Named p wX wY -> PatchInfoAnd p wX wY
- patchInfoAndPatch :: PatchInfo -> Hopefully (Named p) wA wB -> PatchInfoAnd p wA wB
- fmapPIAP :: (forall wA wB. p wA wB -> q wA wB) -> PatchInfoAnd p wX wY -> PatchInfoAnd q wX wY
- fmapFLPIAP :: (FL p wX wY -> FL q wX wY) -> PatchInfoAnd p wX wY -> PatchInfoAnd q wX wY
- conscientiously :: (Doc -> Doc) -> PatchInfoAnd p wA wB -> Named p wA wB
- hopefully :: PatchInfoAnd p wA wB -> Named p wA wB
- info :: PatchInfoAnd p wA wB -> PatchInfo
- winfo :: PatchInfoAnd p wA wB -> WPatchInfo wA wB
- hopefullyM :: Monad m => PatchInfoAnd p wA wB -> m (Named p wA wB)
- createHashed :: String -> (String -> IO (Sealed (a wX))) -> IO (Sealed (Hopefully a wX))
- extractHash :: PatchInfoAnd p wA wB -> Either (Named p wA wB) String
- actually :: a wX wY -> Hopefully a wX wY
- unavailable :: String -> Hopefully a wX wY
- patchDesc :: forall p wX wY. PatchInfoAnd p wX wY -> String
Documentation
Hopefully
p C(x y)
is Either
String (p C(x y))
in a
form adapted to darcs patches. The C
(x y)
represents the type
witness for the patch that should be there. The Hopefully
type
just tells whether we expect the patch to be hashed or not, and
SimpleHopefully
does the real work of emulating
Either
. Hopefully sh
represents an expected unhashed patch, and
Hashed hash sh
represents an expected hashed patch with its hash.
Hopefully (SimpleHopefully a wX wY) | |
Hashed String (SimpleHopefully a wX wY) |
data SimpleHopefully a wX wY Source
SimpleHopefully
is a variant of Either String
adapted for
type witnesses. Actually
is the equivalent of Right
, while
Unavailable
is Left
.
Actually (a wX wY) | |
Unavailable String |
Show (a wX wY) => Show (SimpleHopefully a wX wY) |
data PatchInfoAnd p wA wB Source
represents a hope we have to get a
patch through its info. We're not sure we have the patch, but we
know its info.PatchInfoAnd
p wA wB
data WPatchInfo wA wB Source
represents the info of a patch, marked with
the patch's witnesses.WPatchInfo
wA wB
unWPatchInfo :: WPatchInfo wA wB -> PatchInfo Source
compareWPatchInfo :: WPatchInfo wA wB -> WPatchInfo wC wD -> EqCheck (wA, wB) (wC, wD) Source
piap :: PatchInfo -> Named p wA wB -> PatchInfoAnd p wA wB Source
creates a PatchInfoAnd containing p with info i.piap
i p
n2pia :: Named p wX wY -> PatchInfoAnd p wX wY Source
n2pia
creates a PatchInfoAnd representing a Named
patch.
patchInfoAndPatch :: PatchInfo -> Hopefully (Named p) wA wB -> PatchInfoAnd p wA wB Source
fmapPIAP :: (forall wA wB. p wA wB -> q wA wB) -> PatchInfoAnd p wX wY -> PatchInfoAnd q wX wY Source
fmapFLPIAP :: (FL p wX wY -> FL q wX wY) -> PatchInfoAnd p wX wY -> PatchInfoAnd q wX wY Source
conscientiously :: (Doc -> Doc) -> PatchInfoAnd p wA wB -> Named p wA wB Source
tries to extract a patch from a conscientiously
er hpPatchInfoAnd
.
If it fails, it applies the error handling function er
to a description
of the patch info component of hp
.
hopefully :: PatchInfoAnd p wA wB -> Named p wA wB Source
tries to get a patch from a hopefully
hpPatchInfoAnd
value. If it fails, it outputs an error "failed to read patch:
<description of the patch>". We get the description of the patch
from the info part of hp
info :: PatchInfoAnd p wA wB -> PatchInfo Source
winfo :: PatchInfoAnd p wA wB -> WPatchInfo wA wB Source
hopefullyM :: Monad m => PatchInfoAnd p wA wB -> m (Named p wA wB) Source
hopefullyM
is a version of hopefully
which calls fail
in a
monad instead of erroring.
extractHash :: PatchInfoAnd p wA wB -> Either (Named p wA wB) String Source
unavailable :: String -> Hopefully a wX wY Source
patchDesc :: forall p wX wY. PatchInfoAnd p wX wY -> String Source