Darcs.Patch.Match

First matcher, Second matcher and Nonrange matcher

When we match for patches, we have a PatchSet, of which we want a subset. This subset is formed by the patches in a given interval which match a given criterion. If we represent time going left to right, then we have (up to) three Matchers:

• the firstMatcher is the left bound of the interval,
• the secondMatcher is the right bound, and
• the nonrangeMatcher is the criterion we use to select among patches in the interval.

Documentation

matchParser :: Matchable p => CharParser st (MatchFun p)

helpOnMatchers :: [String]

The string that is emitted when the user runs darcs help --match.

addInternalMatcher :: Matchable p => Maybe (Matcher p) -> Maybe (Matcher p)

matchFirstPatchset :: Matchable p => [MatchFlag] -> PatchSet p wStart wX -> SealedPatchSet p wStart

matchFirstPatchset fs ps returns the part of ps before its first matcher, ie the one that comes first dependencywise. Hence, patches in matchFirstPatchset fs ps are the context for the ones we don't want.

matchSecondPatchset :: Matchable p => [MatchFlag] -> PatchSet p wStart wX -> SealedPatchSet p wStart

matchSecondPatchset fs ps returns the part of ps before its second matcher, ie the one that comes last dependencywise.

splitSecondFL

Arguments

:: Matchable p

=> (forall wA wB. q wA wB -> Sealed2 (PatchInfoAnd p))

-> [MatchFlag]

-> FL q wX wY

-> (FL q :> FL q) wX wY

The first element is the patches before and including the first patch matching the second matcher, the second element is the patches after it

Split on the second matcher. Note that this picks up the first match starting from the earliest patch in a sequence, as opposed to matchSecondPatchset which picks up the first match starting from the latest patch

matchPatch :: Matchable p => [MatchFlag] -> PatchSet p wStart wX -> Sealed2 (Named p)

matchAPatch :: Matchable p => [MatchFlag] -> PatchInfoAnd p wX wY -> Bool

matchAPatch fs p tells whether p matches the matchers in the flags fs

matchAPatchread :: Matchable p => [MatchFlag] -> PatchInfoAnd p wX wY -> Bool

matchAPatchread fs p tells whether p matches the matchers in the flags listed in fs.

getNonrangeMatchS :: (ApplyMonad m (ApplyState p), MonadProgress m, Matchable p, ApplyState p ~ Tree) => [MatchFlag] -> PatchSet p Origin wX -> m ()

firstMatch :: [MatchFlag] -> Bool

firstMatch fs tells whether fs implies a "first match", that is if we match against patches from a point in the past on, rather than against all patches since the creation of the repository.

secondMatch :: [MatchFlag] -> Bool

secondMatch fs tells whether fs implies a "second match", that is if we match against patches up to a point in the past on, rather than against all patches until now.

haveNonrangeMatch :: forall p. Matchable p => PatchType p -> [MatchFlag] -> Bool

haveNonrangeMatch flags tells whether there is a flag in flags which corresponds to a match that is "non-range". Thus, --match, --patch, --hash and --index make haveNonrangeMatch true, but not --from-patch or --to-patch.

havePatchsetMatch :: [MatchFlag] -> Bool

havePatchsetMatch flags tells whether there is a "patchset match" in the flag list. A patchset match is --match or --patch, or --context, but not --from-patch nor (!) --index. Question: Is it supposed not to be a subset of haveNonrangeMatch?

checkMatchSyntax :: [MatchFlag] -> IO ()

applyInvToMatcher :: (Matchable p, ApplyMonad m (ApplyState p)) => InclusiveOrExclusive -> Matcher p -> PatchSet p Origin wX -> m ()

nonrangeMatcher :: Matchable p => [MatchFlag] -> Maybe (Matcher p)

nonrangeMatcher is the criterion that is used to match against patches in the interval. It is 'Just m' when the --patch, --match, --tag options are passed (or their plural variants).

data InclusiveOrExclusive

Constructors

Inclusive

Exclusive

Instances

Eq InclusiveOrExclusive

matchExists :: Matcher p -> PatchSet p wStart wX -> Bool

matchExists m ps tells whether there is a patch matching m in ps

applyNInv :: (Matchable p, ApplyMonad m (ApplyState p)) => Int -> PatchSet p Origin wX -> m ()

applyNInv n ps applies the inverse of the last n patches of ps.

hasIndexRange :: [MatchFlag] -> Maybe (Int, Int)

getMatchingTag :: Matchable p => Matcher p -> PatchSet p wStart wX -> SealedPatchSet p wStart

getMatchingTag m ps, where m is a Matcher which matches tags returns a SealedPatchSet containing all patches in the last tag which matches m. Last tag means the most recent tag in repository order, i.e. the last one you'd see if you ran darcs changes -t m. Calls error if there is no matching tag.

matchAPatchset :: Matchable p => Matcher p -> PatchSet p wStart wX -> SealedPatchSet p wStart

matchAPatchset m ps returns a (the largest?) subset of ps ending in patch which matches m. Calls error if there is none.

getFirstMatchS :: (ApplyMonad m (ApplyState p), MonadProgress m, Matchable p) => [MatchFlag] -> PatchSet p Origin wX -> m ()

nonrangeMatcherIsTag :: [MatchFlag] -> Bool

nonrangeMatcherIsTag returns true if the matching option was '--tag'

data MatchFlag

Constructors

OnePattern String

SeveralPattern String

AfterPattern String

UpToPattern String

OnePatch String

OneHash String

AfterHash String

UpToHash String

SeveralPatch String

AfterPatch String

UpToPatch String

OneTag String

AfterTag String

UpToTag String

LastN Int

PatchIndexRange Int Int

Context AbsolutePath

Instances

Show MatchFlag