diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,369 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) 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You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. 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The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + 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 + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. + +------------------------------------------------------------------------ + +The ncurses binding was originally written by John Meacham, and is +available under the license: + +Unless otherwise stated the following licence applies: + +Copyright (c) 2002-2004 John Meacham (john at repetae dot net) + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be included +in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + diff --git a/Main.hs b/Main.hs new file mode 100644 --- /dev/null +++ b/Main.hs @@ -0,0 +1,49 @@ +-- +-- Copyright (C) 2004 Don Stewart - http://www.cse.unsw.edu.au/~dons +-- +-- 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. +-- + +-- +-- | Frontend to the static binary. We have a separte frontend (rather +-- than putting main in Yi.hs) so we don't get ZCMain_main_* symbols +-- in -package yi, which lets us have multiple frontends, and load +-- them all in ghci. +-- +module Main ( main ) where + +import Yi.Boot +import Yi.Debug + +main :: IO () +main = do + initDebug ".yi-static.dbg" + kernel <- initialize + Yi.Boot.startYi kernel -- call Yi.main dynamically + + + + +{- +import qualified Yi + +main :: IO () +main = do + initDebug ".yi-static.dbg" + kernel <- initialize + Yi.main kernel + +-} diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,42 @@ +#!/usr/bin/env runhaskell +module Main where + +import Distribution.Simple +import Distribution.Setup +import Distribution.PackageDescription +import Distribution.Simple.LocalBuildInfo +import System.Info +import System.Process +import Data.List +import System.IO +import System.Exit +import Data.Maybe + +main :: IO () +main = defaultMainWithHooks defaultUserHooks + { postConf = pC, preBuild = setConfigInfo } + +pC :: Args -> ConfigFlags -> PackageDescription -> LocalBuildInfo -> IO ExitCode +pC args a b lbi = do + fmap (const ()) $ (postConf defaultUserHooks) args a b lbi -- call default function (necessary ?) + getLibDir (compilerPath . compiler $ lbi) >>= \libdir -> + writeFile ".libdir" libdir + return $ ExitSuccess + where getLibDir ghcPath = do + (_, out, _, pid) <- runInteractiveProcess ghcPath ["--print-libdir"] + Nothing Nothing + libDir <- hGetLine out + waitForProcess pid + return libDir + +setConfigInfo args _ + = readFile ".libdir" >>= \libdir -> + return + (Nothing, + [("yi", emptyBuildInfo + { options = [(GHC,[mkOpt ("GHC_LIBDIR",show libdir)])] })]) + where mkOpt (name,def) = "-D"++name++"="++def + +-- Marc Weber: I don't like this patch because it's using the .libdir +-- file to store the libdir. There must be a better way but I don't +-- want to spend more time on this. diff --git a/Yi/Boot.hs b/Yi/Boot.hs new file mode 100644 --- /dev/null +++ b/Yi/Boot.hs @@ -0,0 +1,93 @@ +module Yi.Boot where + +import Yi.Debug hiding (error) +import Yi.Kernel + +import System.Directory ( getHomeDirectory ) + +import qualified GHC +import qualified Packages +import qualified DynFlags +import qualified Module +import Outputable +import Control.Monad + +import GHC.Exts ( unsafeCoerce# ) + + +-- the path of our GHC installation +path :: FilePath +path = GHC_LIBDIR -- See Setup.hs + +-- | Create a suitable Yi Kernel, via a GHC session. +initialize :: IO Kernel +initialize = GHC.defaultErrorHandler DynFlags.defaultDynFlags $ do + session <- GHC.newSession GHC.Interactive (Just path) + dflags1 <- GHC.getSessionDynFlags session + + home <- getHomeDirectory + (dflags1',_otherFlags) <- GHC.parseDynamicFlags dflags1 [ + "-package ghc", "-fglasgow-exts", "-cpp", + "-i", -- clear the search directory (don't look in ./) + "-i" ++ home ++ "/.yi" -- We look for source files in ~/.yi +-- ,"-v" + ] + (dflags2, packageIds) <- Packages.initPackages dflags1' + logPutStrLn $ "packagesIds: " ++ (showSDocDump $ ppr $ packageIds) + GHC.setSessionDynFlags session dflags2{GHC.hscTarget=GHC.HscInterpreted} + return Kernel { + getSessionDynFlags = GHC.getSessionDynFlags session, + setSessionDynFlags = GHC.setSessionDynFlags session, + compileExpr = GHC.compileExpr session, + loadAllTargets = GHC.load session GHC.LoadAllTargets, + setTargets = GHC.setTargets session, + guessTarget = GHC.guessTarget, + findModule = \s -> GHC.findModule session (GHC.mkModuleName s) Nothing, + setContext = GHC.setContext session, + setContextAfterLoad = setContextAfterLoadL session, + getNamesInScope = GHC.getNamesInScope session, + getRdrNamesInScope = GHC.getRdrNamesInScope session, + nameToString = Outputable.showSDoc . Outputable.ppr, + isLoaded = GHC.isLoaded session, + mkModuleName = Module.mkModuleName, + getModuleGraph = GHC.getModuleGraph session + } + + +-- | Dynamically start Yi. +startYi :: Kernel -> IO () +startYi kernel = GHC.defaultErrorHandler DynFlags.defaultDynFlags $ do + result <- compileExpr kernel ("Yi.main :: Yi.Kernel -> Prelude.IO ()") + -- coerce the interpreted expression, so we check that we are not making an horrible mistake. + logPutStrLn "Starting Yi!" + case result of + Nothing -> error "Could not compile Yi.main!" + Just x -> do let (x' :: Kernel -> IO ()) = unsafeCoerce# x + x' kernel + return () + +setContextAfterLoadL :: GHC.Session -> IO [GHC.Module] +setContextAfterLoadL session = do + preludeModule <- GHC.findModule session (GHC.mkModuleName "Prelude") Nothing + yiModule <- GHC.findModule session (GHC.mkModuleName "Yi.Yi") Nothing -- this module re-exports all useful stuff. + graph <- GHC.getModuleGraph session + graph' <- filterM (GHC.isLoaded session . GHC.ms_mod_name) graph + targets <- GHC.getTargets session + let targets' = [ m | Just m <- map (findTarget graph') targets ] + modules = map GHC.ms_mod targets' + context = preludeModule:yiModule:modules + GHC.setContext session [] context + return context + where + findTarget ms t + = case filter (`matches` t) ms of + [] -> Nothing + (m:_) -> Just m + + summary `matches` GHC.Target (GHC.TargetModule m) _ + = GHC.ms_mod_name summary == m + summary `matches` GHC.Target (GHC.TargetFile f _) _ + | Just f' <- GHC.ml_hs_file (GHC.ms_location summary) = f == f' + _summary `matches` _target + = False + diff --git a/Yi/Debug.hs b/Yi/Debug.hs new file mode 100644 --- /dev/null +++ b/Yi/Debug.hs @@ -0,0 +1,58 @@ +module Yi.Debug ( + initDebug -- :: FilePath -> IO () + ,trace -- :: String -> a -> a + ,logPutStrLn + ,logError + ,logStream + ,Yi.Debug.error + ) where + +import Control.Concurrent +import Data.IORef +import System.IO +import System.IO.Unsafe ( unsafePerformIO ) +import System.Time + +dbgHandle :: IORef Handle +dbgHandle = unsafePerformIO $ newIORef stderr + +-- Set the file to which debugging output should be written. Though this +-- is called /init/Debug. This function should be called at most once. +-- Debugging output is sent to stderr by default (i.e., if this function +-- is never called. +initDebug :: FilePath -> IO () +initDebug f = do + openFile f WriteMode >>= writeIORef dbgHandle + logPutStrLn "Logging initialized." + +-- Outputs the given string before returning the second argument. +trace :: String -> a -> a +trace s e = unsafePerformIO $ do logPutStrLn s + return e +{-# NOINLINE trace #-} + + +error :: String -> a +error s = unsafePerformIO $ do logPutStrLn s + Prelude.error s + +logPutStrLn :: String -> IO () +logPutStrLn s = do time <- toCalendarTime =<< getClockTime + tId <- myThreadId + h <- readIORef dbgHandle + hPutStrLn h $ calendarTimeToString time ++ " " ++ show tId ++ " " ++ s + hFlush h + +logError :: String -> IO () +logError s = logPutStrLn $ "error: " ++ s + +logStream :: Show a => String -> Chan a -> IO () +logStream msg ch = do + logPutStrLn $ "Logging stream " ++ msg + forkIO $ logStreamThread msg ch + return () + +logStreamThread :: Show a => String -> Chan a -> IO () +logStreamThread msg ch = do + stream <- getChanContents =<< dupChan ch + mapM_ logPutStrLn [msg ++ "(" ++ show i ++ ")" ++ show event | event <- stream | i <- [(0::Int)..] ] diff --git a/Yi/Kernel.hs b/Yi/Kernel.hs new file mode 100644 --- /dev/null +++ b/Yi/Kernel.hs @@ -0,0 +1,57 @@ + + +-- | This module is the interface to GHC (interpreter). It knows +-- nothing about Yi (at the haskell level; it can know names of +-- modules or functions as strings) + +module Yi.Kernel (Kernel(..), eval, moduleName, moduleNameString, ms_mod_name) where + +import Control.Monad +import Outputable +import qualified GHC +import qualified Linker +import qualified Module +import qualified Packages + +-- | GHC API Kernel. +-- Calls to the GHC API must go though this type. (Because of the use "global variables" in GHC I imagine) +-- ie. the simpler approach of passing just the GHC session does not work. + +data Kernel = Kernel + { + getSessionDynFlags :: IO GHC.DynFlags, + setSessionDynFlags :: GHC.DynFlags -> IO [Packages.PackageId], + compileExpr :: String -> IO (Maybe GHC.HValue), + guessTarget :: String -> Maybe GHC.Phase -> IO GHC.Target, + setTargets :: [GHC.Target] -> IO (), + loadAllTargets :: IO GHC.SuccessFlag, + findModule :: String -> IO GHC.Module, + setContext :: [GHC.Module] -- ^ entire top level scope of these modules + -> [GHC.Module] -- ^ exports only of these modules + -> IO (), + setContextAfterLoad :: IO [GHC.Module], + getNamesInScope :: IO [GHC.Name], + getRdrNamesInScope :: IO [GHC.RdrName], + mkModuleName :: String -> GHC.ModuleName, + isLoaded :: GHC.ModuleName -> IO Bool, + nameToString :: forall a. Outputable a => a -> String, + getModuleGraph :: IO GHC.ModuleGraph + } + +-- | Dynamic evaluation +eval :: Kernel -> String -> IO GHC.HValue +eval kernel expr = do + result <- compileExpr kernel expr + case result of + Nothing -> error $ "Could not compile expr: " ++ expr + Just x -> return x + + +moduleName :: GHC.Module -> GHC.ModuleName +moduleName = Module.moduleName + +moduleNameString :: GHC.ModuleName -> String +moduleNameString = Module.moduleNameString + +ms_mod_name :: GHC.ModSummary -> GHC.ModuleName +ms_mod_name = GHC.ms_mod_name diff --git a/yi.cabal b/yi.cabal new file mode 100644 --- /dev/null +++ b/yi.cabal @@ -0,0 +1,25 @@ +name: yi +version: 0.2 +category: Editor +synopsis: The Haskell-Scriptable Editor +description: + Yi is a text editor written and extensible in Haskell. The goal of Yi is + to provide a flexible, powerful and correct editor core dynamically + scriptable in Haskell. + Note that you will need either yi-gtk or yi-vty to actually run Yi. +license: GPL +license-file: LICENSE +author: Don Stewart +maintainer: dons@cse.unsw.edu.au +build-depends: ghc>=6.6, base, mtl, regex-posix + +executable: yi +main-is: Main.hs +other-modules: + Yi.Boot + Yi.Debug + Yi.Kernel +extensions: CPP +ghc-options: -Wall -fglasgow-exts -O -funbox-strict-fields -fasm -optl-Wl,-s + +