61 lines
2.1 KiB
Haskell
61 lines
2.1 KiB
Haskell
{-# LANGUAGE CPP #-}
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module Language.Haskell.GhcMod.Target (
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setTargetFiles
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) where
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import Control.Applicative ((<$>))
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import Control.Monad (forM, void, (>=>))
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import DynFlags (ExtensionFlag(..), xopt)
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import GHC (LoadHowMuch(..))
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import qualified GHC as G
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import Language.Haskell.GhcMod.DynFlags
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import Language.Haskell.GhcMod.Monad
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-- | Set the files as targets and load them.
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setTargetFiles :: IOish m => [FilePath] -> GhcModT m ()
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setTargetFiles files = do
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targets <- forM files $ \file -> G.guessTarget file Nothing
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G.setTargets targets
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mode <- getCompilerMode
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if mode == Intelligent then
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loadTargets Intelligent
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else do
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mdls <- G.depanal [] False
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let fallback = needsFallback mdls
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if fallback then do
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resetTargets targets
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setIntelligent
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loadTargets Intelligent
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else
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loadTargets Simple
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where
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loadTargets Simple = do
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-- Reporting error A and error B
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void $ G.load LoadAllTargets
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mss <- filter (\x -> G.ms_hspp_file x `elem` files) <$> G.getModuleGraph
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-- Reporting error B and error C
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mapM_ (G.parseModule >=> G.typecheckModule >=> G.desugarModule) mss
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-- Error B duplicates. But we cannot ignore both error reportings,
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-- sigh. So, the logger makes log messages unique by itself.
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loadTargets Intelligent = do
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df <- G.getSessionDynFlags
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void $ G.setSessionDynFlags (setModeIntelligent df)
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void $ G.load LoadAllTargets
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resetTargets targets = do
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G.setTargets []
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void $ G.load LoadAllTargets
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G.setTargets targets
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setIntelligent = do
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newdf <- setModeIntelligent <$> G.getSessionDynFlags
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void $ G.setSessionDynFlags newdf
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setCompilerMode Intelligent
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needsFallback :: G.ModuleGraph -> Bool
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needsFallback = any $ \ms ->
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let df = G.ms_hspp_opts ms in
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Opt_TemplateHaskell `xopt` df
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|| Opt_QuasiQuotes `xopt` df
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#if __GLASGOW_HASKELL__ >= 708
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|| (Opt_PatternSynonyms `xopt` df)
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#endif
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