Darcs.Patch.Set

Documentation

data PatchSet p wStart wY where

The patches in a repository are stored in chunks broken up at "clean" tags. A tag is clean if the only patches before it in the current repository ordering are ones that the tag depends on (either directly or indirectly). Each chunk is stored in a separate inventory file on disk.

A PatchSet represents a repo's history as the list of patches since the last clean tag, and then a list of patch lists each delimited by clean tags.

Because the invariants about clean tags can only be maintained if a PatchSet contains the whole history, the first witness is always forced to be Origin. The type still has two witnesses so it can easily be used with combinators like :> and Fork.

The history is lazily loaded from disk so does not normally need to be all kept in memory.

Constructors

PatchSet :: RL (Tagged p) Origin wX -> RL (PatchInfoAnd p) wX wY -> PatchSet p Origin wY

Instances

Ident (PatchSet p)

Defined in Darcs.Patch.Set

Methods

ident :: PatchSet p wX wY -> PatchId (PatchSet p)

Show2 p => Show2 (PatchSet p)

Defined in Darcs.Patch.Set

Methods

showDict2 :: ShowDict (PatchSet p wX wY)

Show2 p => Show1 (PatchSet p wStart)

Defined in Darcs.Patch.Set

Methods

showDict1 :: Dict (Show (PatchSet p wStart wX))

Show2 p => Show (PatchSet p wStart wY)

Defined in Darcs.Patch.Set

Methods

showsPrec :: Int -> PatchSet p wStart wY -> ShowS

show :: PatchSet p wStart wY -> String

showList :: [PatchSet p wStart wY] -> ShowS

type PatchId (PatchSet p)

Defined in Darcs.Patch.Set

type PatchId (PatchSet p) = Set PatchInfo

data Tagged p wX wZ where

A Tagged is a single chunk of a PatchSet. It has a PatchInfo representing a clean tag, the hash of the previous inventory (if it exists), and the list of patches since that previous inventory.

Constructors

Tagged :: RL (PatchInfoAnd p) wX wY -> PatchInfoAnd p wY wZ -> Maybe InventoryHash -> Tagged p wX wZ

Instances

Show2 p => Show2 (Tagged p)

Defined in Darcs.Patch.Set

Methods

showDict2 :: ShowDict (Tagged p wX wY)

Show2 p => Show1 (Tagged p wX)

Defined in Darcs.Patch.Set

Methods

showDict1 :: Dict (Show (Tagged p wX wX0))

Show2 p => Show (Tagged p wX wZ)

Defined in Darcs.Patch.Set

Methods

showsPrec :: Int -> Tagged p wX wZ -> ShowS

show :: Tagged p wX wZ -> String

showList :: [Tagged p wX wZ] -> ShowS

type SealedPatchSet p wStart = Sealed (PatchSet p wStart)

data Origin

Origin is a type used to represent the initial context of a repo.

progressPatchSet :: String -> PatchSet p wStart wX -> PatchSet p wStart wX

Runs a progress action for each tag and patch in a given PatchSet, using the passed progress message. Does not alter the PatchSet.

patchSetInventoryHashes :: PatchSet p wX wY -> [Maybe InventoryHash]

patchSetTags :: PatchSet p wX wY -> [String]

The tag names of all tags of a given PatchSet.

emptyPatchSet :: PatchSet p Origin Origin

appendPSFL :: PatchSet p wStart wX -> FL (PatchInfoAnd p) wX wY -> PatchSet p wStart wY

appendPSFL takes a PatchSet and a FL of patches that "follow" the PatchSet, and concatenates the patches into the PatchSet.

patchSet2RL :: PatchSet p wStart wX -> RL (PatchInfoAnd p) wStart wX

patchSet2RL takes a PatchSet and returns an equivalent, linear RL of patches.

patchSet2FL :: PatchSet p wStart wX -> FL (PatchInfoAnd p) wStart wX

patchSet2FL takes a PatchSet and returns an equivalent, linear FL of patches.

inOrderTags :: PatchSet p wS wX -> [PatchInfo]

patchSetSnoc :: PatchSet p wX wY -> PatchInfoAnd p wY wZ -> PatchSet p wX wZ

patchSetSplit :: PatchSet p wX wY -> (PatchSet p :> RL (PatchInfoAnd p)) wX wY

Split a PatchSet before the latest known clean tag. The left part is what comes before the tag, the right part is the tag and its non-dependencies.

patchSetDrop :: Int -> PatchSet p wStart wX -> SealedPatchSet p wStart

Drop the last n patches from the given PatchSet.