/usr/lib/hugs/packages/Cabal/Distribution/Simple/Hugs.hs is in libhugs-cabal-bundled 98.200609.21-5.3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 | {-# OPTIONS_GHC -cpp #-}
-----------------------------------------------------------------------------
-- |
-- Module : Distribution.Simple.Hugs
-- Copyright : Isaac Jones 2003-2006
--
-- Maintainer : Isaac Jones <ijones@syntaxpolice.org>
-- Stability : alpha
-- Portability : portable
--
{- Copyright (c) 2003-2005, Isaac Jones
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Isaac Jones nor the names of other
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}
module Distribution.Simple.Hugs (
build, install,
hugsPackageDir
) where
import Distribution.PackageDescription
( PackageDescription(..), BuildInfo(..),
withLib,
Executable(..), withExe, Library(..),
libModules, hcOptions, autogenModuleName )
import Distribution.Compiler ( Compiler(..), CompilerFlavor(..) )
import Distribution.Package ( PackageIdentifier(..) )
import Distribution.Setup ( CopyDest(..) )
import Distribution.PreProcess ( ppCpp )
import Distribution.PreProcess.Unlit
( unlit )
import Distribution.Simple.LocalBuildInfo
( LocalBuildInfo(..),
mkLibDir, autogenModulesDir )
import Distribution.Simple.Utils( rawSystemExit, die,
dirOf, dotToSep, moduleToFilePath,
smartCopySources, findFile )
import Language.Haskell.Extension
( Extension(..) )
import Distribution.Compat.Directory
( copyFile,createDirectoryIfMissing,
removeDirectoryRecursive )
import Distribution.Compat.FilePath
( joinFileName, splitFileExt, joinFileExt,
dllExtension, searchPathSeparator,
platformPath )
import Data.Char ( isSpace )
import Data.Maybe ( mapMaybe )
import Control.Monad ( unless, when, filterM )
import Control.Exception ( try )
import Data.List ( nub, sort, isSuffixOf )
import System.Directory ( Permissions(..), getPermissions,
setPermissions )
-- -----------------------------------------------------------------------------
-- |Building a package for Hugs.
build :: PackageDescription -> LocalBuildInfo -> Int -> IO ()
build pkg_descr lbi verbose = do
let pref = buildDir lbi
withLib pkg_descr () $ \ l -> do
copyFile (autogenModulesDir lbi `joinFileName` paths_modulename)
(pref `joinFileName` paths_modulename)
compileBuildInfo pref [] (libModules pkg_descr) (libBuildInfo l)
withExe pkg_descr $ compileExecutable (pref `joinFileName` "programs")
where
paths_modulename = autogenModuleName pkg_descr ++ ".hs"
compileExecutable :: FilePath -> Executable -> IO ()
compileExecutable destDir (exe@Executable {modulePath=mainPath, buildInfo=bi}) = do
let exeMods = otherModules bi
srcMainFile <- findFile (hsSourceDirs bi) mainPath
let exeDir = destDir `joinFileName` exeName exe
let destMainFile = exeDir `joinFileName` hugsMainFilename exe
copyModule (CPP `elem` extensions bi) bi srcMainFile destMainFile
let destPathsFile = exeDir `joinFileName` paths_modulename
copyFile (autogenModulesDir lbi `joinFileName` paths_modulename)
destPathsFile
compileBuildInfo exeDir (maybe [] (hsSourceDirs . libBuildInfo) (library pkg_descr)) exeMods bi
compileFiles bi exeDir [destMainFile, destPathsFile]
compileBuildInfo :: FilePath
-> [FilePath] -- ^library source dirs, if building exes
-> [String] -- ^Modules
-> BuildInfo -> IO ()
compileBuildInfo destDir mLibSrcDirs mods bi = do
-- Pass 1: copy or cpp files from src directory to build directory
let useCpp = CPP `elem` extensions bi
let srcDirs = nub $ hsSourceDirs bi ++ mLibSrcDirs
when (verbose > 3) (putStrLn $ "Source directories: " ++ show srcDirs)
flip mapM_ mods $ \ m -> do
fs <- moduleToFilePath srcDirs m suffixes
if null fs then
die ("can't find source for module " ++ m)
else do
let srcFile = head fs
let (_, ext) = splitFileExt srcFile
copyModule useCpp bi srcFile
(destDir `joinFileName` dotToSep m `joinFileExt` ext)
-- Pass 2: compile foreign stubs in build directory
stubsFileLists <- sequence [moduleToFilePath [destDir] modu suffixes |
modu <- mods]
compileFiles bi destDir (concat stubsFileLists)
suffixes = ["hs", "lhs"]
-- Copy or cpp a file from the source directory to the build directory.
copyModule :: Bool -> BuildInfo -> FilePath -> FilePath -> IO ()
copyModule cppAll bi srcFile destFile = do
createDirectoryIfMissing True (dirOf destFile)
(exts, opts, _) <- getOptionsFromSource srcFile
let ghcOpts = hcOptions GHC opts
if cppAll || CPP `elem` exts || "-cpp" `elem` ghcOpts then do
ppCpp bi lbi srcFile destFile verbose
return ()
else
copyFile srcFile destFile
compileFiles :: BuildInfo -> FilePath -> [FilePath] -> IO ()
compileFiles bi modDir fileList = do
ffiFileList <- filterM testFFI fileList
unless (null ffiFileList) $ do
when (verbose > 2) (putStrLn "Compiling FFI stubs")
mapM_ (compileFFI bi modDir) ffiFileList
-- Only compile FFI stubs for a file if it contains some FFI stuff
testFFI :: FilePath -> IO Bool
testFFI file = do
inp <- readHaskellFile file
return ("foreign" `elem` symbols (stripComments False inp))
compileFFI :: BuildInfo -> FilePath -> FilePath -> IO ()
compileFFI bi modDir file = do
(_, opts, file_incs) <- getOptionsFromSource file
let ghcOpts = hcOptions GHC opts
let pkg_incs = ["\"" ++ inc ++ "\""
| inc <- includes bi ++ installIncludes bi]
let incs = nub (sort (file_incs ++ includeOpts ghcOpts ++ pkg_incs))
let pathFlag = "-P" ++ modDir ++ [searchPathSeparator]
let hugsArgs = "-98" : pathFlag : map ("-i" ++) incs
cfiles <- getCFiles file
let cArgs =
["-I" ++ dir | dir <- includeDirs bi] ++
ccOptions bi ++
cfiles ++
["-L" ++ dir | dir <- extraLibDirs bi] ++
ldOptions bi ++
["-l" ++ lib | lib <- extraLibs bi] ++
concat [["-framework", f] | f <- frameworks bi]
rawSystemExit verbose ffihugs (hugsArgs ++ file : cArgs)
ffihugs = compilerPath (compiler lbi)
includeOpts :: [String] -> [String]
includeOpts [] = []
includeOpts ("-#include" : arg : opts) = arg : includeOpts opts
includeOpts (_ : opts) = includeOpts opts
-- get C file names from CFILES pragmas throughout the source file
getCFiles :: FilePath -> IO [String]
getCFiles file = do
inp <- readHaskellFile file
return [platformPath cfile |
"{-#" : "CFILES" : rest <-
map words $ lines $ stripComments True inp,
last rest == "#-}",
cfile <- init rest]
-- List of terminal symbols in a source file.
symbols :: String -> [String]
symbols cs = case lex cs of
(sym, cs'):_ | not (null sym) -> sym : symbols cs'
_ -> []
-- Get the non-literate source of a Haskell module.
readHaskellFile :: FilePath -> IO String
readHaskellFile file = do
text <- readFile file
return $ if ".lhs" `isSuffixOf` file then unlit file text else text
-- ------------------------------------------------------------
-- * options in source files
-- ------------------------------------------------------------
-- |Read the initial part of a source file, before any Haskell code,
-- and return the contents of any LANGUAGE, OPTIONS and INCLUDE pragmas.
getOptionsFromSource
:: FilePath
-> IO ([Extension], -- LANGUAGE pragma, if any
[(CompilerFlavor,[String])], -- OPTIONS_FOO pragmas
[String] -- INCLUDE pragmas
)
getOptionsFromSource file = do
text <- readFile file
return $ foldr appendOptions ([],[],[]) $ map getOptions $
takeWhileJust $ map getPragma $
filter textLine $ map (dropWhile isSpace) $ lines $
stripComments True $
if ".lhs" `isSuffixOf` file then unlit file text else text
where textLine [] = False
textLine ('#':_) = False
textLine _ = True
getPragma :: String -> Maybe [String]
getPragma line = case words line of
("{-#" : rest) | last rest == "#-}" -> Just (init rest)
_ -> Nothing
getOptions ("OPTIONS":opts) = ([], [(GHC, opts)], [])
getOptions ("OPTIONS_GHC":opts) = ([], [(GHC, opts)], [])
getOptions ("OPTIONS_NHC98":opts) = ([], [(NHC, opts)], [])
getOptions ("OPTIONS_HUGS":opts) = ([], [(Hugs, opts)], [])
getOptions ("LANGUAGE":ws) = (mapMaybe readExtension ws, [], [])
where readExtension :: String -> Maybe Extension
readExtension w = case reads w of
[(ext, "")] -> Just ext
[(ext, ",")] -> Just ext
_ -> Nothing
getOptions ("INCLUDE":ws) = ([], [], ws)
getOptions _ = ([], [], [])
appendOptions (exts, opts, incs) (exts', opts', incs')
= (exts++exts', opts++opts', incs++incs')
-- takeWhileJust f = map fromJust . takeWhile isJust
takeWhileJust :: [Maybe a] -> [a]
takeWhileJust (Just x:xs) = x : takeWhileJust xs
takeWhileJust _ = []
-- |Strip comments from Haskell source.
stripComments
:: Bool -- ^ preserve pragmas?
-> String -- ^ input source text
-> String
stripComments keepPragmas = stripCommentsLevel 0
where stripCommentsLevel :: Int -> String -> String
stripCommentsLevel 0 ('"':cs) = '"':copyString cs
stripCommentsLevel 0 ('-':'-':cs) = -- FIX: symbols like -->
stripCommentsLevel 0 (dropWhile (/= '\n') cs)
stripCommentsLevel 0 ('{':'-':'#':cs)
| keepPragmas = '{' : '-' : '#' : copyPragma cs
stripCommentsLevel n ('{':'-':cs) = stripCommentsLevel (n+1) cs
stripCommentsLevel 0 (c:cs) = c : stripCommentsLevel 0 cs
stripCommentsLevel n ('-':'}':cs) = stripCommentsLevel (n-1) cs
stripCommentsLevel n (c:cs) = stripCommentsLevel n cs
stripCommentsLevel _ [] = []
copyString ('\\':c:cs) = '\\' : c : copyString cs
copyString ('"':cs) = '"' : stripCommentsLevel 0 cs
copyString (c:cs) = c : copyString cs
copyString [] = []
copyPragma ('#':'-':'}':cs) = '#' : '-' : '}' : stripCommentsLevel 0 cs
copyPragma (c:cs) = c : copyPragma cs
copyPragma [] = []
-- -----------------------------------------------------------------------------
-- Install for Hugs
-- For install, copy-prefix = prefix, but for copy they're different.
-- The library goes in <copy-prefix>/lib/hugs/packages/<pkgname>
-- (i.e. <prefix>/lib/hugs/packages/<pkgname> on the target system).
-- Each executable goes in <copy-prefix>/lib/hugs/programs/<exename>
-- (i.e. <prefix>/lib/hugs/programs/<exename> on the target system)
-- with a script <copy-prefix>/bin/<exename> pointing at
-- <prefix>/lib/hugs/programs/<exename>
install
:: Int -- ^verbose
-> FilePath -- ^Library install location
-> FilePath -- ^Program install location
-> FilePath -- ^Executable install location
-> FilePath -- ^Program location on target system
-> FilePath -- ^Build location
-> PackageDescription
-> IO ()
install verbose libDir installProgDir binDir targetProgDir buildPref pkg_descr = do
withLib pkg_descr () $ \ libInfo -> do
try $ removeDirectoryRecursive libDir
smartCopySources verbose [buildPref] libDir (libModules pkg_descr) hugsInstallSuffixes True False
let buildProgDir = buildPref `joinFileName` "programs"
when (any (buildable . buildInfo) (executables pkg_descr)) $
createDirectoryIfMissing True binDir
withExe pkg_descr $ \ exe -> do
let buildDir = buildProgDir `joinFileName` exeName exe
let installDir = installProgDir `joinFileName` exeName exe
let targetDir = targetProgDir `joinFileName` exeName exe
try $ removeDirectoryRecursive installDir
smartCopySources verbose [buildDir] installDir
("Main" : autogenModuleName pkg_descr : otherModules (buildInfo exe)) hugsInstallSuffixes True False
let targetName = "\"" ++ (targetDir `joinFileName` hugsMainFilename exe) ++ "\""
-- FIX (HUGS): use extensions, and options from file too?
-- see http://hackage.haskell.org/trac/hackage/ticket/43
let hugsOptions = hcOptions Hugs (options (buildInfo exe))
let exeFile = binDir `joinFileName` exeName exe
let script = unlines [
"#! /bin/sh",
unwords ("runhugs" : hugsOptions ++ [targetName, "\"$@\""])]
writeFile exeFile script
perms <- getPermissions exeFile
setPermissions exeFile perms { executable = True, readable = True }
hugsInstallSuffixes :: [String]
hugsInstallSuffixes = ["hs", "lhs", dllExtension]
-- |Hugs library directory for a package
hugsPackageDir :: PackageDescription -> LocalBuildInfo -> FilePath
hugsPackageDir pkg_descr lbi =
mkLibDir pkg_descr lbi NoCopyDest
`joinFileName` "packages" `joinFileName` pkgName (package pkg_descr)
-- |Filename used by Hugs for the main module of an executable.
-- This is a simple filename, so that Hugs will look for any auxiliary
-- modules it uses relative to the directory it's in.
hugsMainFilename :: Executable -> FilePath
hugsMainFilename exe = "Main" `joinFileExt` ext
where (_, ext) = splitFileExt (modulePath exe)
|