| Copyright | Isaac Jones Simon Marlow 2003-2004 Duncan Coutts 2008 |
|---|---|
| License | BSD3 |
| Maintainer | cabal-devel@haskell.org |
| Portability | portable |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
Distribution.Version
Description
Exports the Version type along with a parser and pretty printer. A version
is something like "1.3.3". It also defines the VersionRange data
types. Version ranges are like ">= 1.2 && < 2".
Synopsis
- data Version
- version0 :: Version
- mkVersion :: [Int] -> Version
- mkVersion' :: Version -> Version
- versionNumbers :: Version -> [Int]
- nullVersion :: Version
- alterVersion :: ([Int] -> [Int]) -> Version -> Version
- data VersionRange
- anyVersion :: VersionRange
- noVersion :: VersionRange
- thisVersion :: Version -> VersionRange
- notThisVersion :: Version -> VersionRange
- laterVersion :: Version -> VersionRange
- earlierVersion :: Version -> VersionRange
- orLaterVersion :: Version -> VersionRange
- orEarlierVersion :: Version -> VersionRange
- unionVersionRanges :: VersionRange -> VersionRange -> VersionRange
- intersectVersionRanges :: VersionRange -> VersionRange -> VersionRange
- withinVersion :: Version -> VersionRange
- majorBoundVersion :: Version -> VersionRange
- withinRange :: Version -> VersionRange -> Bool
- isAnyVersion :: VersionRange -> Bool
- isNoVersion :: VersionRange -> Bool
- isSpecificVersion :: VersionRange -> Maybe Version
- simplifyVersionRange :: VersionRange -> VersionRange
- foldVersionRange :: a -> (Version -> a) -> (Version -> a) -> (Version -> a) -> (a -> a -> a) -> (a -> a -> a) -> VersionRange -> a
- normaliseVersionRange :: VersionRange -> VersionRange
- stripParensVersionRange :: VersionRange -> VersionRange
- hasUpperBound :: VersionRange -> Bool
- hasLowerBound :: VersionRange -> Bool
- data VersionRangeF a
- cataVersionRange :: (VersionRangeF a -> a) -> VersionRange -> a
- anaVersionRange :: (a -> VersionRangeF a) -> a -> VersionRange
- hyloVersionRange :: (VersionRangeF VersionRange -> VersionRange) -> (VersionRange -> VersionRangeF VersionRange) -> VersionRange -> VersionRange
- projectVersionRange :: VersionRange -> VersionRangeF VersionRange
- embedVersionRange :: VersionRangeF VersionRange -> VersionRange
- wildcardUpperBound :: Version -> Version
- majorUpperBound :: Version -> Version
- removeUpperBound :: VersionRange -> VersionRange
- removeLowerBound :: VersionRange -> VersionRange
- transformCaret :: VersionRange -> VersionRange
- transformCaretUpper :: VersionRange -> VersionRange
- transformCaretLower :: VersionRange -> VersionRange
- asVersionIntervals :: VersionRange -> [VersionInterval]
- data VersionInterval = VersionInterval !LowerBound !UpperBound
- data LowerBound = LowerBound !Version !Bound
- data UpperBound
- data Bound
- data VersionIntervals
- toVersionIntervals :: VersionRange -> VersionIntervals
- fromVersionIntervals :: VersionIntervals -> VersionRange
- unVersionIntervals :: VersionIntervals -> [VersionInterval]
Package versions
A Version represents the version of a software entity.
Instances of Eq and Ord are provided, which gives exact
equality and lexicographic ordering of the version number
components (i.e. 2.1 > 2.0, 1.2.3 > 1.2.2, etc.).
This type is opaque and distinct from the Version type in
Data.Version since Cabal-2.0. The difference extends to the
Binary instance using a different (and more compact) encoding.
Since: Cabal-2.0.0.2
Instances
mkVersion :: [Int] -> Version #
Construct Version from list of version number components.
For instance, mkVersion [3,2,1] constructs a Version
representing the version 3.2.1.
All version components must be non-negative. mkVersion []
currently represents the special null version; see also nullVersion.
Since: Cabal-2.0.0.2
mkVersion' :: Version -> Version #
Variant of mkVersion which converts a Data.Version
Version into Cabal's Version type.
Since: Cabal-2.0.0.2
versionNumbers :: Version -> [Int] #
nullVersion :: Version #
Constant representing the special null Version
The nullVersion compares (via Ord) as less than every proper
Version value.
Since: Cabal-2.0.0.2
alterVersion :: ([Int] -> [Int]) -> Version -> Version #
Apply function to list of version number components
alterVersion f == mkVersion . f . versionNumbers
Since: Cabal-2.0.0.2
Version ranges
data VersionRange #
Instances
| Parsec VersionRange # |
Small history:
Set operations are introduced in 3.0
Operators are introduced in 1.8. Issues only a warning.
Wild-version ranges are introduced in 1.6. Issues only a warning.
|
Defined in Distribution.Types.VersionRange.Internal Methods parsec :: CabalParsing m => m VersionRange # | |
| Pretty VersionRange # |
|
Defined in Distribution.Types.VersionRange.Internal | |
| Structured VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal | |
| Data VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> VersionRange -> c VersionRange Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c VersionRange Source # toConstr :: VersionRange -> Constr Source # dataTypeOf :: VersionRange -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c VersionRange) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c VersionRange) Source # gmapT :: (forall b. Data b => b -> b) -> VersionRange -> VersionRange Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> VersionRange -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> VersionRange -> r Source # gmapQ :: (forall d. Data d => d -> u) -> VersionRange -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> VersionRange -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> VersionRange -> m VersionRange Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> VersionRange -> m VersionRange Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> VersionRange -> m VersionRange Source # | |
| Generic VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal Methods from :: VersionRange -> Rep VersionRange x Source # to :: Rep VersionRange x -> VersionRange Source # | |
| Read VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal | |
| Show VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal | |
| Binary VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal Methods put :: VersionRange -> Put Source # get :: Get VersionRange Source # putList :: [VersionRange] -> Put Source # | |
| NFData VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal Methods rnf :: VersionRange -> () Source # | |
| Eq VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal | |
| Newtype (CompilerFlavor, VersionRange) TestedWith # | |
Defined in Distribution.FieldGrammar.Newtypes Methods pack :: (CompilerFlavor, VersionRange) -> TestedWith # unpack :: TestedWith -> (CompilerFlavor, VersionRange) # | |
| type Rep VersionRange # | |
Defined in Distribution.Types.VersionRange.Internal type Rep VersionRange = D1 ('MetaData "VersionRange" "Distribution.Types.VersionRange.Internal" "Cabal-3.6.3.0" 'False) (((C1 ('MetaCons "ThisVersion" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Version)) :+: C1 ('MetaCons "LaterVersion" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Version))) :+: (C1 ('MetaCons "OrLaterVersion" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Version)) :+: C1 ('MetaCons "EarlierVersion" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Version)))) :+: ((C1 ('MetaCons "OrEarlierVersion" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Version)) :+: C1 ('MetaCons "MajorBoundVersion" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Version))) :+: (C1 ('MetaCons "UnionVersionRanges" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 VersionRange) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 VersionRange)) :+: C1 ('MetaCons "IntersectVersionRanges" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 VersionRange) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 VersionRange))))) | |
Constructing
The version range -any. That is, a version range containing all
versions.
withinRange v anyVersion = True
The empty version range, that is a version range containing no versions.
This can be constructed using any unsatisfiable version range expression,
for example < 0.
withinRange v noVersion = False
thisVersion :: Version -> VersionRange #
The version range == v
withinRange v' (thisVersion v) = v' == v
notThisVersion :: Version -> VersionRange #
The version range || v
withinRange v' (notThisVersion v) = v' /= v
laterVersion :: Version -> VersionRange #
The version range > v
withinRange v' (laterVersion v) = v' > v
earlierVersion :: Version -> VersionRange #
The version range < v
withinRange v' (earlierVersion v) = v' < v
orLaterVersion :: Version -> VersionRange #
The version range >= v
withinRange v' (orLaterVersion v) = v' >= v
orEarlierVersion :: Version -> VersionRange #
The version range <= v
withinRange v' (orEarlierVersion v) = v' <= v
unionVersionRanges :: VersionRange -> VersionRange -> VersionRange #
The version range vr1 || vr2
withinRange v' (unionVersionRanges vr1 vr2) = withinRange v' vr1 || withinRange v' vr2
intersectVersionRanges :: VersionRange -> VersionRange -> VersionRange #
The version range vr1 && vr2
withinRange v' (intersectVersionRanges vr1 vr2) = withinRange v' vr1 && withinRange v' vr2
withinVersion :: Version -> VersionRange #
The version range == v.*.
For example, for version 1.2, the version range == 1.2.* is the same as
>= 1.2 && < 1.3
withinRange v' (laterVersion v) = v' >= v && v' < upper v
where
upper (Version lower t) = Version (init lower ++ [last lower + 1]) tmajorBoundVersion :: Version -> VersionRange #
The version range ^>= v.
For example, for version 1.2.3.4, the version range ^>= 1.2.3.4
is the same as >= 1.2.3.4 && < 1.3.
Note that ^>= 1 is equivalent to >= 1 && < 1.1.
Since: Cabal-2.0.0.2
Inspection
withinRange :: Version -> VersionRange -> Bool #
Does this version fall within the given range?
This is the evaluation function for the VersionRange type.
isAnyVersion :: VersionRange -> Bool #
Does this VersionRange place any restriction on the Version or is it
in fact equivalent to AnyVersion.
Note this is a semantic check, not simply a syntactic check. So for example
the following is True (for all v).
isAnyVersion (EarlierVersion v `UnionVersionRanges` orLaterVersion v)
isNoVersion :: VersionRange -> Bool #
This is the converse of isAnyVersion. It check if the version range is
empty, if there is no possible version that satisfies the version range.
For example this is True (for all v):
isNoVersion (EarlierVersion v `IntersectVersionRanges` LaterVersion v)
isSpecificVersion :: VersionRange -> Maybe Version #
Is this version range in fact just a specific version?
For example the version range ">= 3 && <= 3" contains only the version
3.
simplifyVersionRange :: VersionRange -> VersionRange #
Simplify a VersionRange expression. For non-empty version ranges
this produces a canonical form. Empty or inconsistent version ranges
are left as-is because that provides more information.
If you need a canonical form use
fromVersionIntervals . toVersionIntervals
It satisfies the following properties:
withinRange v (simplifyVersionRange r) = withinRange v r
withinRange v r = withinRange v r' ==> simplifyVersionRange r = simplifyVersionRange r' || isNoVersion r || isNoVersion r'
Arguments
| :: a |
|
| -> (Version -> a) | "== v" |
| -> (Version -> a) | "> v" |
| -> (Version -> a) | "< v" |
| -> (a -> a -> a) |
|
| -> (a -> a -> a) |
|
| -> VersionRange | |
| -> a |
Fold over the basic syntactic structure of a VersionRange.
This provides a syntactic view of the expression defining the version range.
The syntactic sugar ">= v", "<= v" and "== v.*" is presented
in terms of the other basic syntax.
For a semantic view use asVersionIntervals.
normaliseVersionRange :: VersionRange -> VersionRange #
Normalise VersionRange.
In particular collapse (== v || > v) into >= v, and so on.
stripParensVersionRange :: VersionRange -> VersionRange #
Remove VersionRangeParens constructors.
Since version 3.4 this function is id, there aren't VersionRangeParens constructor in VersionRange anymore.
Since: Cabal-2.2
hasUpperBound :: VersionRange -> Bool #
Does the version range have an upper bound?
Since: Cabal-1.24.0.0
hasLowerBound :: VersionRange -> Bool #
Does the version range have an explicit lower bound?
Note: this function only considers the user-specified lower bounds, but not the implicit >=0 lower bound.
Since: Cabal-1.24.0.0
Cata & ana
data VersionRangeF a #
F-Algebra of VersionRange. See cataVersionRange.
Since: Cabal-2.2
Constructors
| ThisVersionF Version | |
| LaterVersionF Version | |
| OrLaterVersionF Version | |
| EarlierVersionF Version | |
| OrEarlierVersionF Version | |
| MajorBoundVersionF Version | |
| UnionVersionRangesF a a | |
| IntersectVersionRangesF a a |
Instances
cataVersionRange :: (VersionRangeF a -> a) -> VersionRange -> a #
Fold VersionRange.
Since: Cabal-2.2
anaVersionRange :: (a -> VersionRangeF a) -> a -> VersionRange #
Unfold VersionRange.
Since: Cabal-2.2
hyloVersionRange :: (VersionRangeF VersionRange -> VersionRange) -> (VersionRange -> VersionRangeF VersionRange) -> VersionRange -> VersionRange #
Refold VersionRange
Since: Cabal-2.2
projectVersionRange :: VersionRange -> VersionRangeF VersionRange #
Since: Cabal-2.2
embedVersionRange :: VersionRangeF VersionRange -> VersionRange #
Since: Cabal-2.2
Utilities
wildcardUpperBound :: Version -> Version #
Since: Cabal-2.2
majorUpperBound :: Version -> Version #
Compute next greater major version to be used as upper bound
Example: 0.4.1 produces the version 0.5 which then can be used
to construct a range >= 0.4.1 && < 0.5
Since: Cabal-2.2
Modification
removeUpperBound :: VersionRange -> VersionRange #
Given a version range, remove the highest upper bound. Example: (>= 1 && <
3) || (>= 4 && < 5) is converted to (>= 1 && || (= 4).
transformCaret :: VersionRange -> VersionRange #
Rewrite ^>= x.y.z into >= x.y.z && < x.(y+1)
Since: Cabal-3.6.0.0
transformCaretUpper :: VersionRange -> VersionRange #
Rewrite ^>= x.y.z into >= x.y.z
Since: Cabal-3.6.0.0
transformCaretLower :: VersionRange -> VersionRange #
Rewrite ^>= x.y.z into <x.(y+1)
Since: Cabal-3.6.0.0
Version intervals view
asVersionIntervals :: VersionRange -> [VersionInterval] #
View a VersionRange as a union of intervals.
This provides a canonical view of the semantics of a VersionRange as
opposed to the syntax of the expression used to define it. For the syntactic
view use foldVersionRange.
Each interval is non-empty. The sequence is in increasing order and no
intervals overlap or touch. Therefore only the first and last can be
unbounded. The sequence can be empty if the range is empty
(e.g. a range expression like && 2).
Other checks are trivial to implement using this view. For example:
isNoVersion vr | [] <- asVersionIntervals vr = True
| otherwise = FalseisSpecificVersion vr
| [(LowerBound v InclusiveBound
,UpperBound v' InclusiveBound)] <- asVersionIntervals vr
, v == v' = Just v
| otherwise = Nothingdata VersionInterval #
Constructors
| VersionInterval !LowerBound !UpperBound |
Instances
| Show VersionInterval # | |
Defined in Distribution.Types.VersionInterval | |
| Eq VersionInterval # | |
Defined in Distribution.Types.VersionInterval Methods (==) :: VersionInterval -> VersionInterval -> Bool # (/=) :: VersionInterval -> VersionInterval -> Bool # | |
data LowerBound #
Constructors
| LowerBound !Version !Bound |
Instances
| Show LowerBound # | |
Defined in Distribution.Types.VersionInterval | |
| Eq LowerBound # | |
Defined in Distribution.Types.VersionInterval | |
data UpperBound #
Constructors
| NoUpperBound | |
| UpperBound !Version !Bound |
Instances
| Show UpperBound # | |
Defined in Distribution.Types.VersionInterval | |
| Eq UpperBound # | |
Defined in Distribution.Types.VersionInterval | |
Constructors
| ExclusiveBound | |
| InclusiveBound |
VersionIntervals abstract type
The VersionIntervals type and the accompanying functions are exposed
primarily for completeness and testing purposes. In practice
asVersionIntervals is the main function to use to
view a VersionRange as a bunch of VersionIntervals.
data VersionIntervals #
A complementary representation of a VersionRange. Instead of a boolean
version predicate it uses an increasing sequence of non-overlapping,
non-empty intervals.
The key point is that this representation gives a canonical representation
for the semantics of VersionRanges. This makes it easier to check things
like whether a version range is empty, covers all versions, or requires a
certain minimum or maximum version. It also makes it easy to check equality
or containment. It also makes it easier to identify 'simple' version
predicates for translation into foreign packaging systems that do not
support complex version range expressions.
Instances
| Show VersionIntervals # | |
Defined in Distribution.Types.VersionInterval | |
| Eq VersionIntervals # | |
Defined in Distribution.Types.VersionInterval Methods (==) :: VersionIntervals -> VersionIntervals -> Bool # (/=) :: VersionIntervals -> VersionIntervals -> Bool # | |
toVersionIntervals :: VersionRange -> VersionIntervals #
Convert a VersionRange to a sequence of version intervals.
fromVersionIntervals :: VersionIntervals -> VersionRange #
Convert a VersionIntervals value back into a VersionRange expression
representing the version intervals.
unVersionIntervals :: VersionIntervals -> [VersionInterval] #
Inspect the list of version intervals.