{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric      #-}
module Distribution.Types.Dependency
  ( Dependency(..)
  , mkDependency
  , depPkgName
  , depVerRange
  , depLibraries
  , simplifyDependency
  , mainLibSet
  ) where

import Distribution.Compat.Prelude
import Prelude ()

import Distribution.Types.VersionRange (isAnyVersionLight)
import Distribution.Version            (VersionRange, anyVersion, simplifyVersionRange)

import Distribution.CabalSpecVersion
import Distribution.Compat.CharParsing        (char, spaces)
import Distribution.Compat.Parsing            (between, option)
import Distribution.Parsec
import Distribution.Pretty
import Distribution.Types.LibraryName
import Distribution.Types.PackageName
import Distribution.Types.UnqualComponentName

import qualified Distribution.Compat.NonEmptySet as NES
import qualified Text.PrettyPrint                as PP

-- | Describes a dependency on a source package (API)
--
-- /Invariant:/ package name does not appear as 'LSubLibName' in
-- set of library names.
--
-- /Note:/ 'Dependency' is not an instance of 'Ord', and so it cannot be used
-- in 'Set' or as the key to a 'Map'.  For these and similar use cases see
-- 'DependencyMap'.
--
data Dependency = Dependency
                    PackageName
                    VersionRange
                    (NonEmptySet LibraryName)
                    -- ^ The set of libraries required from the package.
                    -- Only the selected libraries will be built.
                    -- It does not affect the cabal-install solver yet.
                  deriving ((forall x. Dependency -> Rep Dependency x)
-> (forall x. Rep Dependency x -> Dependency) -> Generic Dependency
forall x. Rep Dependency x -> Dependency
forall x. Dependency -> Rep Dependency x
forall a.
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from :: forall x. Dependency -> Rep Dependency x
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Generic, ReadPrec [Dependency]
ReadPrec Dependency
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$creadsPrec :: Int -> ReadS Dependency
readsPrec :: Int -> ReadS Dependency
$creadList :: ReadS [Dependency]
readList :: ReadS [Dependency]
$creadPrec :: ReadPrec Dependency
readPrec :: ReadPrec Dependency
$creadListPrec :: ReadPrec [Dependency]
readListPrec :: ReadPrec [Dependency]
Read, Int -> Dependency -> ShowS
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Dependency -> String
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showsPrec :: Int -> Dependency -> ShowS
$cshow :: Dependency -> String
show :: Dependency -> String
$cshowList :: [Dependency] -> ShowS
showList :: [Dependency] -> ShowS
Show, Dependency -> Dependency -> Bool
(Dependency -> Dependency -> Bool)
-> (Dependency -> Dependency -> Bool) -> Eq Dependency
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
$c== :: Dependency -> Dependency -> Bool
== :: Dependency -> Dependency -> Bool
$c/= :: Dependency -> Dependency -> Bool
/= :: Dependency -> Dependency -> Bool
Eq, Typeable, Typeable Dependency
Typeable Dependency
-> (forall (c :: * -> *).
    (forall d b. Data d => c (d -> b) -> d -> c b)
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    (forall b r. Data b => c (b -> r) -> c r)
    -> (forall r. r -> c r) -> Constr -> c Dependency)
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    (forall d. Data d => c (t d)) -> Maybe (c Dependency))
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    (forall d e. (Data d, Data e) => c (t d e))
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    Int -> (forall d. Data d => d -> u) -> Dependency -> u)
-> (forall (m :: * -> *).
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    (forall d. Data d => d -> m d) -> Dependency -> m Dependency)
-> (forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Dependency -> m Dependency)
-> (forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Dependency -> m Dependency)
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toConstr :: Dependency -> Constr
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dataTypeOf :: Dependency -> DataType
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(forall d. Data d => d -> m d) -> Dependency -> m Dependency
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(forall d. Data d => d -> m d) -> Dependency -> m Dependency
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Data)

depPkgName :: Dependency -> PackageName
depPkgName :: Dependency -> PackageName
depPkgName (Dependency PackageName
pn VersionRange
_ NonEmptySet LibraryName
_) = PackageName
pn

depVerRange :: Dependency -> VersionRange
depVerRange :: Dependency -> VersionRange
depVerRange (Dependency PackageName
_ VersionRange
vr NonEmptySet LibraryName
_) = VersionRange
vr

depLibraries :: Dependency -> NonEmptySet LibraryName
depLibraries :: Dependency -> NonEmptySet LibraryName
depLibraries (Dependency PackageName
_ VersionRange
_ NonEmptySet LibraryName
cs) = NonEmptySet LibraryName
cs

-- | Smart constructor of 'Dependency'.
--
-- If 'PackageName' is appears as 'LSubLibName' in a set of sublibraries,
-- it is automatically converted to 'LMainLibName'.
--
-- @since 3.4.0.0
--
mkDependency :: PackageName -> VersionRange -> NonEmptySet LibraryName -> Dependency
mkDependency :: PackageName
-> VersionRange -> NonEmptySet LibraryName -> Dependency
mkDependency PackageName
pn VersionRange
vr NonEmptySet LibraryName
lb = PackageName
-> VersionRange -> NonEmptySet LibraryName -> Dependency
Dependency PackageName
pn VersionRange
vr ((LibraryName -> LibraryName)
-> NonEmptySet LibraryName -> NonEmptySet LibraryName
forall b a. Ord b => (a -> b) -> NonEmptySet a -> NonEmptySet b
NES.map LibraryName -> LibraryName
conv NonEmptySet LibraryName
lb)
  where
    pn' :: UnqualComponentName
pn' = PackageName -> UnqualComponentName
packageNameToUnqualComponentName PackageName
pn

    conv :: LibraryName -> LibraryName
conv l :: LibraryName
l@LibraryName
LMainLibName                 = LibraryName
l
    conv l :: LibraryName
l@(LSubLibName UnqualComponentName
ln) | UnqualComponentName
ln UnqualComponentName -> UnqualComponentName -> Bool
forall a. Eq a => a -> a -> Bool
== UnqualComponentName
pn' = LibraryName
LMainLibName
                            | Bool
otherwise = LibraryName
l

instance Binary Dependency
instance Structured Dependency
instance NFData Dependency where rnf :: Dependency -> ()
rnf = Dependency -> ()
forall a. (Generic a, GNFData (Rep a)) => a -> ()
genericRnf

-- |
--
-- >>> prettyShow $ Dependency "pkg" anyVersion mainLibSet
-- "pkg"
--
-- >>> prettyShow $ Dependency "pkg" anyVersion $ NES.insert (LSubLibName "sublib") mainLibSet
-- "pkg:{pkg, sublib}"
--
-- >>> prettyShow $ Dependency "pkg" anyVersion $ NES.singleton (LSubLibName "sublib")
-- "pkg:sublib"
--
-- >>> prettyShow $ Dependency "pkg" anyVersion $ NES.insert (LSubLibName "sublib-b") $ NES.singleton (LSubLibName "sublib-a")
-- "pkg:{sublib-a, sublib-b}"
--
instance Pretty Dependency where
    pretty :: Dependency -> Doc
pretty (Dependency PackageName
name VersionRange
ver NonEmptySet LibraryName
sublibs) = Doc -> Doc
withSubLibs (PackageName -> Doc
forall a. Pretty a => a -> Doc
pretty PackageName
name) Doc -> Doc -> Doc
<+> Doc
pver
      where
        -- TODO: change to isAnyVersion after #6736
        pver :: Doc
pver | VersionRange -> Bool
isAnyVersionLight VersionRange
ver = Doc
PP.empty
             | Bool
otherwise             = VersionRange -> Doc
forall a. Pretty a => a -> Doc
pretty VersionRange
ver

        withSubLibs :: Doc -> Doc
withSubLibs Doc
doc = case NonEmptySet LibraryName -> [LibraryName]
forall a. NonEmptySet a -> [a]
NES.toList NonEmptySet LibraryName
sublibs of
            [LibraryName
LMainLibName]   -> Doc
doc
            [LSubLibName UnqualComponentName
uq] -> Doc
doc Doc -> Doc -> Doc
<<>> Doc
PP.colon Doc -> Doc -> Doc
<<>> UnqualComponentName -> Doc
forall a. Pretty a => a -> Doc
pretty UnqualComponentName
uq
            [LibraryName]
_                -> Doc
doc Doc -> Doc -> Doc
<<>> Doc
PP.colon Doc -> Doc -> Doc
<<>> Doc -> Doc
PP.braces Doc
prettySublibs

        prettySublibs :: Doc
prettySublibs = [Doc] -> Doc
PP.hsep ([Doc] -> Doc) -> [Doc] -> Doc
forall a b. (a -> b) -> a -> b
$ Doc -> [Doc] -> [Doc]
PP.punctuate Doc
PP.comma ([Doc] -> [Doc]) -> [Doc] -> [Doc]
forall a b. (a -> b) -> a -> b
$ LibraryName -> Doc
prettySublib (LibraryName -> Doc) -> [LibraryName] -> [Doc]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> NonEmptySet LibraryName -> [LibraryName]
forall a. NonEmptySet a -> [a]
NES.toList NonEmptySet LibraryName
sublibs

        prettySublib :: LibraryName -> Doc
prettySublib LibraryName
LMainLibName     = String -> Doc
PP.text (String -> Doc) -> String -> Doc
forall a b. (a -> b) -> a -> b
$ PackageName -> String
unPackageName PackageName
name
        prettySublib (LSubLibName UnqualComponentName
un) = String -> Doc
PP.text (String -> Doc) -> String -> Doc
forall a b. (a -> b) -> a -> b
$ UnqualComponentName -> String
unUnqualComponentName UnqualComponentName
un

-- |
--
-- >>> simpleParsec "mylib:sub" :: Maybe Dependency
-- Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LSubLibName (UnqualComponentName "sub") :| [])))
--
-- >>> simpleParsec "mylib:{sub1,sub2}" :: Maybe Dependency
-- Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LSubLibName (UnqualComponentName "sub1") :| [LSubLibName (UnqualComponentName "sub2")])))
--
-- >>> simpleParsec "mylib:{ sub1 , sub2 }" :: Maybe Dependency
-- Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LSubLibName (UnqualComponentName "sub1") :| [LSubLibName (UnqualComponentName "sub2")])))
--
-- >>> simpleParsec "mylib:{ sub1 , sub2 } ^>= 42" :: Maybe Dependency
-- Just (Dependency (PackageName "mylib") (MajorBoundVersion (mkVersion [42])) (fromNonEmpty (LSubLibName (UnqualComponentName "sub1") :| [LSubLibName (UnqualComponentName "sub2")])))
--
-- >>> simpleParsec "mylib:{ } ^>= 42" :: Maybe Dependency
-- Nothing
--
-- >>> traverse_ print (map simpleParsec ["mylib:mylib", "mylib:{mylib}", "mylib:{mylib,sublib}" ] :: [Maybe Dependency])
-- Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LMainLibName :| [])))
-- Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LMainLibName :| [])))
-- Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LMainLibName :| [LSubLibName (UnqualComponentName "sublib")])))
--
-- Spaces around colon are not allowed:
--
-- >>> map simpleParsec ["mylib: sub", "mylib :sub", "mylib: {sub1,sub2}", "mylib :{sub1,sub2}"] :: [Maybe Dependency]
-- [Nothing,Nothing,Nothing,Nothing]
--
-- Sublibrary syntax is accepted since @cabal-version: 3.0@
--
-- >>> map (`simpleParsec'` "mylib:sub") [CabalSpecV2_4, CabalSpecV3_0] :: [Maybe Dependency]
-- [Nothing,Just (Dependency (PackageName "mylib") (OrLaterVersion (mkVersion [0])) (fromNonEmpty (LSubLibName (UnqualComponentName "sub") :| [])))]
--
instance Parsec Dependency where
    parsec :: forall (m :: * -> *). CabalParsing m => m Dependency
parsec = do
        PackageName
name <- m PackageName
forall a (m :: * -> *). (Parsec a, CabalParsing m) => m a
forall (m :: * -> *). CabalParsing m => m PackageName
parsec

        NonEmptySet LibraryName
libs <- NonEmptySet LibraryName
-> m (NonEmptySet LibraryName) -> m (NonEmptySet LibraryName)
forall (m :: * -> *) a. Alternative m => a -> m a -> m a
option NonEmptySet LibraryName
mainLibSet (m (NonEmptySet LibraryName) -> m (NonEmptySet LibraryName))
-> m (NonEmptySet LibraryName) -> m (NonEmptySet LibraryName)
forall a b. (a -> b) -> a -> b
$ do
          Char
_ <- Char -> m Char
forall (m :: * -> *). CharParsing m => Char -> m Char
char Char
':'
          m ()
forall (m :: * -> *). CabalParsing m => m ()
versionGuardMultilibs
          LibraryName -> NonEmptySet LibraryName
forall a. a -> NonEmptySet a
NES.singleton (LibraryName -> NonEmptySet LibraryName)
-> m LibraryName -> m (NonEmptySet LibraryName)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> m LibraryName
parseLib m (NonEmptySet LibraryName)
-> m (NonEmptySet LibraryName) -> m (NonEmptySet LibraryName)
forall a. m a -> m a -> m a
forall (f :: * -> *) a. Alternative f => f a -> f a -> f a
<|> m (NonEmptySet LibraryName)
parseMultipleLibs

        m ()
forall (m :: * -> *). CharParsing m => m ()
spaces -- https://github.com/haskell/cabal/issues/5846

        VersionRange
ver  <- m VersionRange
forall a (m :: * -> *). (Parsec a, CabalParsing m) => m a
forall (m :: * -> *). CabalParsing m => m VersionRange
parsec m VersionRange -> m VersionRange -> m VersionRange
forall a. m a -> m a -> m a
forall (f :: * -> *) a. Alternative f => f a -> f a -> f a
<|> VersionRange -> m VersionRange
forall a. a -> m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure VersionRange
anyVersion
        Dependency -> m Dependency
forall a. a -> m a
forall (m :: * -> *) a. Monad m => a -> m a
return (Dependency -> m Dependency) -> Dependency -> m Dependency
forall a b. (a -> b) -> a -> b
$ PackageName
-> VersionRange -> NonEmptySet LibraryName -> Dependency
mkDependency PackageName
name VersionRange
ver NonEmptySet LibraryName
libs
      where
        parseLib :: m LibraryName
parseLib          = UnqualComponentName -> LibraryName
LSubLibName (UnqualComponentName -> LibraryName)
-> m UnqualComponentName -> m LibraryName
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> m UnqualComponentName
forall a (m :: * -> *). (Parsec a, CabalParsing m) => m a
forall (m :: * -> *). CabalParsing m => m UnqualComponentName
parsec
        parseMultipleLibs :: m (NonEmptySet LibraryName)
parseMultipleLibs = m ()
-> m Char
-> m (NonEmptySet LibraryName)
-> m (NonEmptySet LibraryName)
forall (m :: * -> *) bra ket a.
Applicative m =>
m bra -> m ket -> m a -> m a
between
            (Char -> m Char
forall (m :: * -> *). CharParsing m => Char -> m Char
char Char
'{' m Char -> m () -> m ()
forall a b. m a -> m b -> m b
forall (f :: * -> *) a b. Applicative f => f a -> f b -> f b
*> m ()
forall (m :: * -> *). CharParsing m => m ()
spaces)
            (m ()
forall (m :: * -> *). CharParsing m => m ()
spaces m () -> m Char -> m Char
forall a b. m a -> m b -> m b
forall (f :: * -> *) a b. Applicative f => f a -> f b -> f b
*> Char -> m Char
forall (m :: * -> *). CharParsing m => Char -> m Char
char Char
'}')
            (NonEmpty LibraryName -> NonEmptySet LibraryName
forall a. Ord a => NonEmpty a -> NonEmptySet a
NES.fromNonEmpty (NonEmpty LibraryName -> NonEmptySet LibraryName)
-> m (NonEmpty LibraryName) -> m (NonEmptySet LibraryName)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> m LibraryName -> m (NonEmpty LibraryName)
forall (m :: * -> *) a. CabalParsing m => m a -> m (NonEmpty a)
parsecCommaNonEmpty m LibraryName
parseLib)

versionGuardMultilibs :: CabalParsing m => m ()
versionGuardMultilibs :: forall (m :: * -> *). CabalParsing m => m ()
versionGuardMultilibs = do
  CabalSpecVersion
csv <- m CabalSpecVersion
forall (m :: * -> *). CabalParsing m => m CabalSpecVersion
askCabalSpecVersion
  Bool -> m () -> m ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (CabalSpecVersion
csv CabalSpecVersion -> CabalSpecVersion -> Bool
forall a. Ord a => a -> a -> Bool
< CabalSpecVersion
CabalSpecV3_0) (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$ String -> m ()
forall a. String -> m a
forall (m :: * -> *) a. MonadFail m => String -> m a
fail (String -> m ()) -> String -> m ()
forall a b. (a -> b) -> a -> b
$ [String] -> String
unwords
    [ String
"Sublibrary dependency syntax used."
    , String
"To use this syntax the package needs to specify at least 'cabal-version: 3.0'."
    , String
"Alternatively, if you are depending on an internal library, you can write"
    , String
"directly the library name as it were a package."
    ]

-- | Library set with main library.
--
-- @since 3.4.0.0
mainLibSet :: NonEmptySet LibraryName
mainLibSet :: NonEmptySet LibraryName
mainLibSet = LibraryName -> NonEmptySet LibraryName
forall a. a -> NonEmptySet a
NES.singleton LibraryName
LMainLibName

-- | Simplify the 'VersionRange' expression in a 'Dependency'.
-- See 'simplifyVersionRange'.
--
simplifyDependency :: Dependency -> Dependency
simplifyDependency :: Dependency -> Dependency
simplifyDependency (Dependency PackageName
name VersionRange
range NonEmptySet LibraryName
comps) =
  PackageName
-> VersionRange -> NonEmptySet LibraryName -> Dependency
Dependency PackageName
name (VersionRange -> VersionRange
simplifyVersionRange VersionRange
range) NonEmptySet LibraryName
comps