90 lines
2.6 KiB
Haskell
90 lines
2.6 KiB
Haskell
module Main where
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import Browse
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import Check
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import Control.Applicative
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import Control.Exception hiding (try)
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import Lang
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import Lint
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import List
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import Prelude hiding (catch)
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import System.Console.GetOpt
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import System.Directory
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import System.Environment (getArgs)
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import Types
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----------------------------------------------------------------
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usage :: String
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usage = "ghc-mod version 0.4.2\n"
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++ "Usage:\n"
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++ "\t ghc-mod list\n"
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++ "\t ghc-mod lang\n"
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++ "\t ghc-mod browse <module> [<module> ...]\n"
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++ "\t ghc-mod check <HaskellFile>\n"
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++ "\t ghc-mod [-h opt] lint <HaskellFile>\n"
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++ "\t ghc-mod boot\n"
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++ "\t ghc-mod help\n"
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----------------------------------------------------------------
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defaultOptions :: Options
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defaultOptions = Options {
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convert = toPlain
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, hlintOpts = []
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}
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argspec :: [OptDescr (Options -> Options)]
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argspec = [ Option "l" ["tolisp"]
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(NoArg (\opts -> opts { convert = toLisp }))
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"print as a list of Lisp"
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, Option "h" ["hlintOpt"]
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(ReqArg (\h opts -> opts { hlintOpts = h : hlintOpts opts }) "hlintOpt")
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"hint to be ignored"
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]
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parseArgs :: [OptDescr (Options -> Options)] -> [String] -> (Options, [String])
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parseArgs spec argv
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= case getOpt Permute spec argv of
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(o,n,[] ) -> (foldl (flip id) defaultOptions o, n)
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(_,_,errs) -> error $ concat errs ++ usageInfo usage argspec
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----------------------------------------------------------------
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main :: IO ()
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main = flip catches handlers $ do
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args <- getArgs
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let (opt,cmdArg) = parseArgs argspec args
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res <- case head cmdArg of
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"browse" -> concat <$> mapM (browseModule opt) (tail cmdArg)
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"list" -> listModules opt
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"check" -> withFile (checkSyntax opt) (cmdArg !! 1)
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"lint" -> withFile (lintSyntax opt) (cmdArg !! 1)
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"lang" -> listLanguages opt
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"boot" -> do
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mods <- listModules opt
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langs <- listLanguages opt
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pre <- browseModule opt "Prelude"
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return $ mods ++ langs ++ pre
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_ -> error usage
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putStr res
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where
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handlers = [handler]
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handler :: ErrorCall -> IO ()
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handler _ = putStr usage
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withFile cmd file = do
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exist <- doesFileExist file
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if exist
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then cmd file
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else error $ file ++ " not found"
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----------------------------------------------------------------
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toLisp :: [String] -> String
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toLisp ms = "(" ++ unwords quoted ++ ")\n"
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where
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quote x = "\"" ++ x ++ "\""
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quoted = map quote ms
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toPlain :: [String] -> String
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toPlain = unlines
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