{- BNF Converter: Haskell main file Copyright (C) 2004 Author: Markus Forberg, Peter Gammie, Aarne Ranta This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -} module BNFC.Backend.Haskell (makeHaskell, AlexVersion(..), makefile) where -- import BNFC.Utils import BNFC.Options hiding (Backend) import BNFC.CF import BNFC.Backend.Base import BNFC.Backend.Haskell.CFtoHappy import BNFC.Backend.Haskell.CFtoAlex import BNFC.Backend.Haskell.CFtoAlex2 import BNFC.Backend.Haskell.CFtoAlex3 import BNFC.Backend.Txt2Tag import BNFC.Backend.Haskell.CFtoAbstract import BNFC.Backend.Haskell.CFtoTemplate import BNFC.Backend.Haskell.CFtoPrinter import BNFC.Backend.Haskell.CFtoLayout import BNFC.Backend.XML import BNFC.Backend.Haskell.HsOpts import BNFC.Backend.Haskell.ToCNF as ToCNF import BNFC.Backend.Haskell.MkErrM import BNFC.Backend.Haskell.MkSharedString import BNFC.Utils import qualified BNFC.Backend.Common.Makefile as Makefile import Data.Char import Data.Maybe (fromMaybe,maybe) import System.Exit (exitFailure) import System.FilePath (pathSeparator,()) import Control.Monad(when,unless) import System.FilePath (takeFileName) import Text.Printf (printf) -- naming conventions makeHaskell :: SharedOptions -> CF -> Backend makeHaskell opts cf = do let absMod = absFileM opts lexMod = alexFileM opts parMod = happyFileM opts prMod = printerFileM opts layMod = layoutFileM opts errMod = errFileM opts shareMod = shareFileM opts do let dir = codeDir opts mkfile (absFile opts) $ cf2Abstract (byteStrings opts) (ghcExtensions opts) absMod cf case alexMode opts of Alex1 -> do mkfile (alexFile opts) $ cf2alex lexMod errMod cf liftIO $ printf "Use Alex 1.1 to compile %s.\n" (alexFile opts) Alex2 -> do mkfile (alexFile opts) $ cf2alex2 lexMod errMod shareMod (shareStrings opts) (byteStrings opts) cf liftIO $ printf "Use Alex 2.0 to compile %s.\n" (alexFile opts) Alex3 -> do mkfile (alexFile opts) $ cf2alex3 lexMod errMod shareMod (shareStrings opts) (byteStrings opts) cf liftIO $ printf "Use Alex 3.0 to compile %s.\n" (alexFile opts) unless (cnf opts) $ do mkfile (happyFile opts) $ cf2HappyS parMod absMod lexMod errMod (glr opts) (byteStrings opts) cf liftIO $ printf "%s Tested with Happy 1.15\n" (happyFile opts) mkfile (tFile opts) $ testfile opts cf mkfile (txtFile opts) $ cfToTxt (lang opts) cf mkfile (templateFile opts) $ cf2Template (templateFileM opts) absMod errMod cf mkfile (printerFile opts) $ cf2Printer (byteStrings opts) prMod absMod cf when (hasLayout cf) $ mkfile (layoutFile opts) $ cf2Layout (alex1 opts) (inDir opts) layMod lexMod cf mkfile (errFile opts) $ errM errMod cf when (shareStrings opts) $ mkfile (shareFile opts) $ sharedString shareMod (byteStrings opts) cf Makefile.mkMakefile opts $ makefile opts case xml opts of 2 -> makeXML opts True cf 1 -> makeXML opts False cf _ -> return () when (cnf opts) $ do mkfile (cnfTablesFile opts) $ ToCNF.generate opts cf mkfile "TestCNF.hs" $ ToCNF.genTestFile opts cf mkfile "BenchCNF.hs" $ ToCNF.genBenchmark opts codeDir :: Options -> FilePath codeDir opts = let pref = maybe "" pkgToDir (inPackage opts) dir = if inDir opts then lang opts else "" sep = if null pref || null dir then "" else [pathSeparator] in pref ++ sep ++ dir makefile :: Options -> String makefile opts = makeA where glr_params = if glr opts == GLR then "--glr --decode " else "" dir = let d = codeDir opts in if null d then "" else d ++ [pathSeparator] cd c = if null dir then c else "(cd " ++ dir ++ "; " ++ c ++ ")" makeA = Makefile.mkRule "all" [] ([ "happy -gca " ++ glr_params ++ happyFile opts | not (cnf opts) ] ++ [ "alex -g " ++ alexFile opts ] ++ [ if cnf opts then "ghc --make TestCNF.hs" else "ghc --make " ++ tFile opts ++ " -o " ++ mkFile withLang "Test" "" opts]) $ Makefile.mkRule "clean" [] [ "-rm -f " ++ unwords (map (dir++) [ "*.log", "*.aux", "*.hi", "*.o", "*.dvi" ]) , "-rm -f " ++ psFile opts ] $ Makefile.mkRule "distclean" ["clean"] [ "-rm -f " ++ unwords [ mkFile withLang "Doc" "*" opts , mkFile withLang "Lex" "*" opts , mkFile withLang "Par" "*" opts , mkFile withLang "Layout" "*" opts , mkFile withLang "Skel" "*" opts , mkFile withLang "Print" "*" opts , mkFile withLang "Test" "*" opts , mkFile withLang "Abs" "*" opts , mkFile withLang "Test" "" opts , mkFile noLang "ErrM" "*" opts , mkFile noLang "SharedString" "*" opts , mkFile withLang "ComposOp" "*" opts , dir ++ lang opts ++ ".dtd" , mkFile withLang "XML" "*" opts , "Makefile*" ] , if null dir then "" else "\t-rmdir -p " ++ dir ] "" testfile :: Options -> CF -> String testfile opts cf = let lay = hasLayout cf use_xml = xml opts > 0 xpr = if use_xml then "XPrint a, " else "" use_glr = glr opts == GLR if_glr s = if use_glr then s else "" firstParser = if use_glr then "the_parser" else parserName parserName = 'p' : topType topType = show (firstEntry cf) in unlines ["-- automatically generated by BNF Converter", "module Main where\n", "", "import System.IO ( stdin, hGetContents )", "import System.Environment ( getArgs, getProgName )", "import System.Exit ( exitFailure, exitSuccess )", "", "import " ++ alexFileM opts, "import " ++ happyFileM opts, "import " ++ templateFileM opts, "import " ++ printerFileM opts, "import " ++ absFileM opts, if lay then "import " ++ layoutFileM opts else "", if use_xml then "import " ++ xmlFileM opts else "", if_glr "import qualified Data.Map(Map, lookup, toList)", if_glr "import Data.Maybe(fromJust)", "import " ++ errFileM opts, "", if use_glr then "type ParseFun a = [[Token]] -> (GLRResult, GLR_Output (Err a))" else "type ParseFun a = [Token] -> Err a", "", "myLLexer = " ++ if lay then "resolveLayout True . myLexer" else "myLexer", "", "type Verbosity = Int", "", "putStrV :: Verbosity -> String -> IO ()", "putStrV v s = if v > 1 then putStrLn s else return ()", "", "runFile :: (" ++ xpr ++ if_glr "TreeDecode a, " ++ "Print a, Show a) => Verbosity -> ParseFun a -> FilePath -> IO ()", "runFile v p f = putStrLn f >> readFile f >>= run v p", "", "run :: (" ++ xpr ++ if_glr "TreeDecode a, " ++ "Print a, Show a) => Verbosity -> ParseFun a -> String -> IO ()", if use_glr then run_glr else run_std use_xml, "", "showTree :: (Show a, Print a) => Int -> a -> IO ()", "showTree v tree", " = do", " putStrV v $ \"\\n[Abstract Syntax]\\n\\n\" ++ show tree", " putStrV v $ \"\\n[Linearized tree]\\n\\n\" ++ printTree tree", "", "main :: IO ()", "main = do args <- getArgs", " case args of", " [] -> hGetContents stdin >>= run 2 " ++ firstParser, " \"-s\":fs -> mapM_ (runFile 0 " ++ firstParser ++ ") fs", " fs -> mapM_ (runFile 2 " ++ firstParser ++ ") fs", "", if_glr $ "the_parser :: ParseFun " ++ topType, if_glr $ "the_parser = lift_parser " ++ parserName, if_glr $ "", if_glr $ lift_parser ] run_std xml = unlines [ "run v p s = let ts = myLLexer s in case p ts of" , " Bad s -> do putStrLn \"\\nParse Failed...\\n\"" , " putStrV v \"Tokens:\"" , " putStrV v $ show ts" , " putStrLn s" , " exitFailure" , " Ok tree -> do putStrLn \"\\nParse Successful!\"" , " showTree v tree" , if xml then " putStrV v $ \"\\n[XML]\\n\\n\" ++ printXML tree" else "" , " exitSuccess" ] run_glr = unlines [ "run v p s" , " = let ts = map (:[]) $ myLLexer s" , " (raw_output, simple_output) = p ts in" , " case simple_output of" , " GLR_Fail major minor -> do" , " putStrLn major" , " putStrV v minor" , " GLR_Result df trees -> do" , " putStrLn \"\\nParse Successful!\"" , " case trees of" , " [] -> error \"No results but parse succeeded?\"" , " [Ok x] -> showTree v x" , " xs@(_:_) -> showSeveralTrees v xs" , " where" , " showSeveralTrees :: (Print b, Show b) => Int -> [Err b] -> IO ()" , " showSeveralTrees v trees" , " = sequence_ " , " [ do putStrV v (replicate 40 '-')" , " putStrV v $ \"Parse number: \" ++ show n" , " showTree v t" , " | (Ok t,n) <- zip trees [1..]" , " ]" ] lift_parser = unlines [ "type Forest = Data.Map.Map ForestId [Branch] -- omitted in ParX export." , "data GLR_Output a" , " = GLR_Result { pruned_decode :: (Forest -> Forest) -> [a]" , " , semantic_result :: [a]" , " }" , " | GLR_Fail { main_message :: String" , " , extra_info :: String" , " }" , "" , "lift_parser" , " :: (TreeDecode a, Show a, Print a)" , " => ([[Token]] -> GLRResult) -> ParseFun a" , "lift_parser parser ts" , " = let result = parser ts in" , " (\\o -> (result, o)) $" , " case result of" , " ParseError ts f -> GLR_Fail \"Parse failed, unexpected token(s)\\n\"" , " (\"Tokens: \" ++ show ts)" , " ParseEOF f -> GLR_Fail \"Parse failed, unexpected EOF\\n\"" , " (\"Partial forest:\\n\"" , " ++ unlines (map show $ Data.Map.toList f))" , " ParseOK r f -> let find f = fromJust . ((flip Data.Map.lookup) f)" , " dec_fn f = decode (find f) r" , " in GLR_Result (\\ff -> dec_fn $ ff f) (dec_fn f)" ]