- %
-% (c) The University of Glasgow, 2006
%
-% Package manipulation
+% (c) The University of Glasgow, 2006
%
\begin{code}
+-- | Package manipulation
module Packages (
module PackageConfig,
-- ---------------------------------------------------------------------------
-- The Package state
--- Package state is all stored in DynFlags, including the details of
+-- | Package state is all stored in 'DynFlag's, including the details of
-- all packages, which packages are exposed, and which modules they
-- provide.
-
--- The package state is computed by initPackages, and kept in DynFlags.
--
--- * -package <pkg> causes <pkg> to become exposed, and all other packages
+-- The package state is computed by 'initPackages', and kept in DynFlags.
+--
+-- * @-package <pkg>@ causes @<pkg>@ to become exposed, and all other packages
-- with the same name to become hidden.
--
--- * -hide-package <pkg> causes <pkg> to become hidden.
+-- * @-hide-package <pkg>@ causes @<pkg>@ to become hidden.
--
--- * Let exposedPackages be the set of packages thus exposed.
--- Let depExposedPackages be the transitive closure from exposedPackages of
+-- * Let @exposedPackages@ be the set of packages thus exposed.
+-- Let @depExposedPackages@ be the transitive closure from @exposedPackages@ of
-- their dependencies.
--
-- * When searching for a module from an preload import declaration,
--- only the exposed modules in exposedPackages are valid.
+-- only the exposed modules in @exposedPackages@ are valid.
--
-- * When searching for a module from an implicit import, all modules
--- from depExposedPackages are valid.
+-- from @depExposedPackages@ are valid.
--
--- * When linking in a comp manager mode, we link in packages the
+-- * When linking in a compilation manager mode, we link in packages the
-- program depends on (the compiler knows this list by the
-- time it gets to the link step). Also, we link in all packages
--- which were mentioned with preload -package flags on the command-line,
--- or are a transitive dependency of same, or are "base"/"rts".
--- The reason for (b) is that we might need packages which don't
+-- which were mentioned with preload @-package@ flags on the command-line,
+-- or are a transitive dependency of same, or are \"base\"/\"rts\".
+-- The reason for this is that we might need packages which don't
-- contain any Haskell modules, and therefore won't be discovered
-- by the normal mechanism of dependency tracking.
-- exposed is True if the package exposes that module.
}
--- A PackageConfigMap maps a PackageId to a PackageConfig
+-- | A PackageConfigMap maps a 'PackageId' to a 'PackageConfig'
type PackageConfigMap = UniqFM PackageConfig
emptyPackageConfigMap :: PackageConfigMap
emptyPackageConfigMap = emptyUFM
+-- | Find the package we know about with the given id (e.g. \"foo-1.0\"), if any
lookupPackage :: PackageConfigMap -> PackageId -> Maybe PackageConfig
lookupPackage = lookupUFM
= foldl add pkg_map new_pkgs
where add pkg_map p = addToUFM pkg_map (packageConfigId p) p
+-- | Looks up the package with the given id in the package state, panicing if it is
+-- not found
getPackageDetails :: PackageState -> PackageId -> PackageConfig
getPackageDetails ps pid = expectJust "getPackageDetails" (lookupPackage (pkgIdMap ps) pid)
--
-- Returns a list of packages to link in if we're doing dynamic linking.
-- This list contains the packages that the user explicitly mentioned with
--- -package flags.
+-- @-package@ flags.
--
-- 'initPackages' can be called again subsequently after updating the
-- 'packageFlags' field of the 'DynFlags', and it will update the
--- 'packageState' in 'DynFlags' and return a list of packages to
+-- 'pkgState' in 'DynFlags' and return a list of packages to
-- link in.
initPackages :: DynFlags -> IO (DynFlags, [PackageId])
initPackages dflags = do
matchingPackages :: String -> [PackageConfig]
-> Maybe ([PackageConfig], [PackageConfig])
matchingPackages str pkgs
- = case partition (matches str) pkgs of
+ = case partition (packageMatches str) pkgs of
([],_) -> Nothing
(ps,rest) -> Just (sortByVersion ps, rest)
- where
- -- A package named on the command line can either include the
- -- version, or just the name if it is unambiguous.
- matches str p
- = str == display (package p)
- || str == display (pkgName (package p))
+
+-- A package named on the command line can either include the
+-- version, or just the name if it is unambiguous.
+packageMatches :: String -> PackageConfig -> Bool
+packageMatches str p
+ = str == display (package p)
+ || str == display (pkgName (package p))
pickPackages :: [PackageConfig] -> [String] -> [PackageConfig]
pickPackages pkgs strs =
-- of preload (command-line) packages to determine which packages to
-- use.
+-- | Find all the include directories in these and the preload packages
getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
getPackageIncludePath dflags pkgs =
collectIncludeDirs `fmap` getPreloadPackagesAnd dflags pkgs
collectIncludeDirs :: [PackageConfig] -> [FilePath]
collectIncludeDirs ps = nub (filter notNull (concatMap includeDirs ps))
+-- | Find all the library paths in these and the preload packages
getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
getPackageLibraryPath dflags pkgs =
collectLibraryPaths `fmap` getPreloadPackagesAnd dflags pkgs
collectLibraryPaths :: [PackageConfig] -> [FilePath]
collectLibraryPaths ps = nub (filter notNull (concatMap libraryDirs ps))
+-- | Find all the link options in these and the preload packages
getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
getPackageLinkOpts dflags pkgs =
collectLinkOpts dflags `fmap` getPreloadPackagesAnd dflags pkgs
expandTag t | null t = ""
| otherwise = '_':t
+-- | Find all the C-compiler options in these and the preload packages
getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
getPackageExtraCcOpts dflags pkgs = do
ps <- getPreloadPackagesAnd dflags pkgs
return (concatMap ccOptions ps)
+-- | Find all the package framework paths in these and the preload packages
getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
getPackageFrameworkPath dflags pkgs = do
ps <- getPreloadPackagesAnd dflags pkgs
return (nub (filter notNull (concatMap frameworkDirs ps)))
+-- | Find all the package frameworks in these and the preload packages
getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
getPackageFrameworks dflags pkgs = do
ps <- getPreloadPackagesAnd dflags pkgs
-- -----------------------------------------------------------------------------
-- Package Utils
--- | Takes a Module, and if the module is in a package returns
--- @(pkgconf,exposed)@ where pkgconf is the PackageConfig for that package,
--- and exposed is True if the package exposes the module.
+-- | Takes a 'Module', and if the module is in a package returns
+-- @(pkgconf, exposed)@ where pkgconf is the PackageConfig for that package,
+-- and exposed is @True@ if the package exposes the module.
lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
lookupModuleInAllPackages dflags m =
case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
Nothing -> []
Just ps -> ps
+-- | Find all the 'PackageConfig' in both the preload packages from 'DynFlags' and corresponding to the list of
+-- 'PackageConfig's
getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
getPreloadPackagesAnd dflags pkgids =
let
-- -----------------------------------------------------------------------------
+-- | Will the 'Name' come from a dynamically linked library?
isDllName :: PackageId -> Name -> Bool
isDllName this_pkg name
| opt_Static = False
-- -----------------------------------------------------------------------------
-- Displaying packages
+-- | Show package info on console, if verbosity is >= 3
dumpPackages :: DynFlags -> IO ()
--- Show package info on console, if verbosity is >= 3
dumpPackages dflags
= do let pkg_map = pkgIdMap (pkgState dflags)
putMsg dflags $
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