103 lines
3.1 KiB
Haskell
103 lines
3.1 KiB
Haskell
-- ghc-mod: Making Haskell development *more* fun
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-- Copyright (C) 2015 Daniel Gröber <dxld ÄT darkboxed DOT org>
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--
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU Affero General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU Affero General Public License for more details.
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--
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-- You should have received a copy of the GNU Affero General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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{-# LANGUAGE GeneralizedNewtypeDeriving #-}
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module Language.Haskell.GhcMod.Logging (
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module Language.Haskell.GhcMod.Logging
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, module Language.Haskell.GhcMod.Pretty
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, GmLogLevel(..)
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, module Text.PrettyPrint
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, module Data.Monoid
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) where
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import Control.Applicative hiding (empty)
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import Control.Monad
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import Control.Monad.Trans.Class
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import Data.List
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import Data.Char
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import Data.Monoid
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import Data.Maybe
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import System.IO
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import System.FilePath
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import Text.PrettyPrint hiding (style, (<>))
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import Prelude
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import Language.Haskell.GhcMod.Monad.Types
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import Language.Haskell.GhcMod.Types
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import Language.Haskell.GhcMod.Pretty
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import Language.Haskell.GhcMod.Output
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gmSetLogLevel :: GmLog m => GmLogLevel -> m ()
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gmSetLogLevel level =
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gmlJournal $ GhcModLog (Just level) (Last Nothing) []
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gmSetDumpLevel :: GmLog m => Bool -> m ()
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gmSetDumpLevel level =
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gmlJournal $ GhcModLog Nothing (Last (Just level)) []
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increaseLogLevel :: GmLogLevel -> GmLogLevel
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increaseLogLevel l | l == maxBound = l
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increaseLogLevel l = succ l
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decreaseLogLevel :: GmLogLevel -> GmLogLevel
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decreaseLogLevel l | l == minBound = l
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decreaseLogLevel l = pred l
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-- |
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-- >>> Just GmDebug <= Nothing
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-- False
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-- >>> Just GmException <= Just GmDebug
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-- True
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-- >>> Just GmDebug <= Just GmException
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-- False
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gmLog :: (MonadIO m, GmLog m, GmEnv m) => GmLogLevel -> String -> Doc -> m ()
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gmLog level loc' doc = do
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GhcModLog { gmLogLevel = Just level' } <- gmlHistory
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let loc | loc' == "" = empty
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| otherwise = text loc' <+>: empty
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msgDoc = gmLogLevelDoc level <+>: sep [loc, doc]
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msg = dropWhileEnd isSpace $ gmRenderDoc msgDoc
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when (level <= level') $ gmErrStrLn msg
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gmlJournal (GhcModLog Nothing (Last Nothing) [(level, loc', msgDoc)])
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gmVomit :: (MonadIO m, GmLog m, GmEnv m) => String -> Doc -> String -> m ()
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gmVomit filename doc content = do
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gmLog GmVomit "" $ doc <+>: text content
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GhcModLog { gmLogVomitDump = Last mdump }
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<- gmlHistory
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dir <- cradleTempDir `liftM` cradle
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when (fromMaybe False mdump) $
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liftIO $ writeFile (dir </> filename) content
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newtype LogDiscardT m a = LogDiscardT { runLogDiscard :: m a }
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deriving (Functor, Applicative, Monad)
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instance MonadTrans LogDiscardT where
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lift = LogDiscardT
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instance Monad m => GmLog (LogDiscardT m) where
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gmlJournal = const $ return ()
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gmlHistory = return mempty
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gmlClear = return ()
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