132 lines
4.6 KiB
Haskell
132 lines
4.6 KiB
Haskell
{-# LANGUAGE OverloadedStrings, RecordWildCards #-}
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module CabalApi (
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fromCabal
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, cabalParseFile
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, cabalBuildInfo
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, cabalAllDependPackages
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, cabalAllExtentions
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) where
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import Control.Applicative
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import Data.Maybe (fromJust, maybeToList, mapMaybe)
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import Data.Set (fromList, toList)
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import Distribution.Package (Dependency(Dependency), PackageName(PackageName))
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import Distribution.PackageDescription
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import Distribution.PackageDescription.Parse (readPackageDescription)
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import Distribution.Text (display)
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import Distribution.Verbosity (silent)
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import Language.Haskell.Extension (Extension(..))
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import System.FilePath
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import Types
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----------------------------------------------------------------
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fromCabal :: [GHCOption]
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-> Cradle
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-> IO ([GHCOption]
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,[IncludeDir]
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,[Package]
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,[LangExt])
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fromCabal ghcOptions cradle = do
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cabal <- cabalParseFile cfile
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let binfo@BuildInfo{..} = cabalBuildInfo cabal
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let exts = map (("-X" ++) . display) $ usedExtensions binfo
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lang = maybe "-XHaskell98" (("-X" ++) . display) defaultLanguage
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libs = map ("-l" ++) extraLibs
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libDirs = map ("-L" ++) extraLibDirs
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gopts = ghcOptions ++ exts ++ [lang] ++ libs ++ libDirs
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idirs = case hsSourceDirs of
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[] -> [cdir,owdir]
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dirs -> map (cdir </>) dirs ++ [owdir]
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let depPkgs = removeMe cfile $ cabalAllDependPackages cabal
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hdrExts = cabalAllExtentions cabal
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return (gopts,idirs,depPkgs,hdrExts)
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where
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owdir = cradleCurrentDir cradle
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Just cdir = cradleCabalDir cradle
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Just cfile = cradleCabalDir cradle
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removeMe :: FilePath -> [String] -> [String]
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removeMe cabalfile = filter (/= me)
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where
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me = dropExtension $ takeFileName cabalfile
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----------------------------------------------------------------
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cabalParseFile :: FilePath -> IO GenericPackageDescription
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cabalParseFile = readPackageDescription silent
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----------------------------------------------------------------
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-- Causes error, catched in the upper function.
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cabalBuildInfo :: GenericPackageDescription -> BuildInfo
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cabalBuildInfo pd = fromJust $ fromLibrary pd <|> fromExecutable pd
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where
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fromLibrary c = libBuildInfo . condTreeData <$> condLibrary c
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fromExecutable c = buildInfo . condTreeData . snd <$> toMaybe (condExecutables c)
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toMaybe [] = Nothing
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toMaybe (x:_) = Just x
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----------------------------------------------------------------
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cabalAllDependPackages :: GenericPackageDescription -> [Package]
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cabalAllDependPackages pd = uniqueAndSort pkgs
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where
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pkgs = map getDependencyPackageName $ cabalAllDependency pd
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cabalAllDependency :: GenericPackageDescription -> [Dependency]
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cabalAllDependency = fromPackageDescription getDeps getDeps getDeps getDeps
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where
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getDeps :: [Tree a] -> [Dependency]
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getDeps = concatMap condTreeConstraints
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getDependencyPackageName :: Dependency -> Package
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getDependencyPackageName (Dependency (PackageName nm) _) = nm
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----------------------------------------------------------------
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cabalAllExtentions :: GenericPackageDescription -> [LangExt]
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cabalAllExtentions pd = uniqueAndSort exts
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where
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buildInfos = cabalAllBuildInfos pd
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eexts = concatMap oldExtensions buildInfos
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++ concatMap defaultExtensions buildInfos
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exts = mapMaybe getExtensionName eexts
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getExtensionName :: Extension -> Maybe LangExt
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getExtensionName (EnableExtension nm) = Just (display nm)
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getExtensionName _ = Nothing
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----------------------------------------------------------------
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cabalAllBuildInfos :: GenericPackageDescription -> [BuildInfo]
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cabalAllBuildInfos = fromPackageDescription f1 f2 f3 f4
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where
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f1 = map (libBuildInfo . condTreeData)
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f2 = map (buildInfo . condTreeData)
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f3 = map (testBuildInfo . condTreeData)
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f4 = map (benchmarkBuildInfo . condTreeData)
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----------------------------------------------------------------
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type Tree = CondTree ConfVar [Dependency]
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fromPackageDescription :: ([Tree Library] -> [a])
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-> ([Tree Executable] -> [a])
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-> ([Tree TestSuite] -> [a])
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-> ([Tree Benchmark] -> [a])
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-> GenericPackageDescription
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-> [a]
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fromPackageDescription f1 f2 f3 f4 pd = lib ++ exe ++ tests ++ bench
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where
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lib = f1 . maybeToList . condLibrary $ pd
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exe = f2 . map snd . condExecutables $ pd
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tests = f3 . map snd . condTestSuites $ pd
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bench = f4 . map snd . condBenchmarks $ pd
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----------------------------------------------------------------
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uniqueAndSort :: [String] -> [String]
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uniqueAndSort = toList . fromList
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