implementing fallback from Simple to Intelligent.

This commit is contained in:
Kazu Yamamoto 2014-07-19 11:53:05 +09:00
parent 5abd75ea7d
commit 981051a642

View File

@ -8,18 +8,27 @@ import DynFlags (ExtensionFlag(..), xopt)
import GHC (DynFlags(..), LoadHowMuch(..))
import qualified GHC as G
import Language.Haskell.GhcMod.DynFlags
import Language.Haskell.GhcMod.Monad (IOish, GhcModT)
import Language.Haskell.GhcMod.Monad
-- | Set the files as targets and load them.
setTargetFiles :: IOish m => [FilePath] -> GhcModT m ()
setTargetFiles files = do
targets <- forM files $ \file -> G.guessTarget file Nothing
G.setTargets targets
xs <- G.depanal [] False
-- FIXME, checking state
loadTargets $ needsFallback xs
mode <- getMode
if mode == Intelligent then
loadTargets Intelligent
else do
mdls <- G.depanal [] False
let fallback = needsFallback mdls
if fallback then do
resetTargets targets
setIntelligent
loadTargets Intelligent
else
loadTargets Simple
where
loadTargets False = do
loadTargets Simple = do
-- Reporting error A and error B
void $ G.load LoadAllTargets
mss <- filter (\x -> G.ms_hspp_file x `elem` files) <$> G.getModuleGraph
@ -27,10 +36,18 @@ setTargetFiles files = do
mapM_ (G.parseModule >=> G.typecheckModule >=> G.desugarModule) mss
-- Error B duplicates. But we cannot ignore both error reportings,
-- sigh. So, the logger makes log messages unique by itself.
loadTargets True = do
loadTargets Intelligent = do
df <- G.getSessionDynFlags
void $ G.setSessionDynFlags (setModeIntelligent df)
void $ G.load LoadAllTargets
resetTargets targets = do
G.setTargets []
void $ G.load LoadAllTargets
G.setTargets targets
setIntelligent = do
newdf <- setModeIntelligent <$> G.getSessionDynFlags
void $ G.setSessionDynFlags newdf
setMode Intelligent
needsFallback :: G.ModuleGraph -> Bool
needsFallback = any (hasTHorQQ . G.ms_hspp_opts)