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|
--
-- Haddock - A Haskell Documentation Tool
--
-- (c) Simon Marlow 2003
--
module Haddock.GHC (
startGhc,
module Haddock.GHC.Typecheck,
module Haddock.GHC.Utils
) where
import Haddock.GHC.Typecheck
import Haddock.GHC.Utils
import Haddock.Exception
import Haddock.Options
import Data.Foldable (foldlM)
import Data.Maybe
import Control.Monad
import GHC
import DynFlags hiding (Option)
import Packages hiding (package)
import StaticFlags
-- | Start a GHC session with the -haddock flag set. Also turn off
-- compilation and linking.
startGhc :: String -> [String] -> IO (Session, DynFlags)
startGhc libDir flags = do
restFlags <- parseStaticFlags flags
session <- newSession (Just libDir)
dynflags <- getSessionDynFlags session
let dynflags' = dopt_set dynflags Opt_Haddock
let dynflags'' = dynflags' {
hscTarget = HscAsm,
ghcMode = CompManager,
ghcLink = NoLink
}
dynflags''' <- parseGhcFlags dynflags'' restFlags flags
setSessionDynFlags session dynflags'''
return (session, dynflags''')
-- | Expose the list of packages to GHC. Then initialize GHC's package state
-- and get the name of the actually loaded packages matching the supplied
-- list of packages. The matching packages might be newer versions of the
-- supplied ones. For each matching package, return its InstalledPackageInfo.
-- Commented out, since it is unused and doesn't build with GHC >= 6.9
{-
loadPackages :: Session -> [String] -> IO [InstalledPackageInfo]
-- It would be better to try to get the "in scope" packages from GHC instead.
-- This would make the -use-package flag unnecessary. But currently it
-- seems all you can get from the GHC api is all packages that are linked in
-- (i.e the closure of the "in scope" packages).
loadPackages session pkgStrs = do
-- expose the packages
dfs <- getSessionDynFlags session
let dfs' = dfs { packageFlags = packageFlags dfs ++ map ExposePackage pkgStrs }
setSessionDynFlags session dfs'
-- try to parse the packages and get their names, without versions
pkgNames <- mapM (handleParse . unpackPackageId . stringToPackageId) pkgStrs
-- init GHC's package state
(dfs'', depPackages) <- initPackages dfs'
-- compute the pkgIds of the loaded packages matching the
-- supplied ones
let depPkgs = map (fromJust . unpackPackageId) depPackages
matchingPackages = [ mkPackageId pkg | pkg <- depPkgs,
pkgName pkg `elem` pkgNames ]
-- get InstalledPackageInfos for each package
let pkgInfos = map (getPackageDetails (pkgState dfs'')) matchingPackages
return pkgInfos
where
handleParse (Just pkg) = return (pkgName pkg)
handleParse Nothing = throwE "Could not parse package identifier"
-}
-- | Try to parse dynamic GHC flags
parseGhcFlags dynflags flags origFlags = do
(dynflags', rest) <- parseDynamicFlags dynflags flags
if not (null rest)
then throwE ("Couldn't parse GHC options: " ++ (unwords origFlags))
else return dynflags'
|
