+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
-----------------------------------------------------------------------------
--
-- Parsing the top of a Haskell source file to get its module name,
--
-----------------------------------------------------------------------------
-module HeaderInfo ( getImportsFromFile, getImports
+module HeaderInfo ( getImports
, getOptionsFromFile, getOptions
, optionsErrorMsgs ) where
#include "HsVersions.h"
import Parser ( parseHeader )
-import Lexer ( P(..), ParseResult(..), mkPState, pragState
- , lexer, Token(..), PState(..) )
+import Lexer
import FastString
import HsSyn ( ImportDecl(..), HsModule(..) )
import Module ( ModuleName, moduleName )
import PrelNames ( gHC_PRIM, mAIN_NAME )
import StringBuffer ( StringBuffer(..), hGetStringBuffer, hGetStringBufferBlock
, appendStringBuffers )
-import SrcLoc ( Located(..), mkSrcLoc, unLoc, noSrcSpan )
-import FastString ( mkFastString )
-import DynFlags ( DynFlags )
+import Config
+import SrcLoc
+import DynFlags
import ErrUtils
import Util
import Outputable
import Pretty ()
import Panic
+import Maybes
import Bag ( emptyBag, listToBag )
-import Distribution.Compiler
-
-import EXCEPTION ( throwDyn )
-import IO
-import List
+import Control.Exception
+import Control.Monad
+import System.Exit
+import System.IO
+import Data.List
-#if __GLASGOW_HASKELL__ >= 601
+#if !defined(__GLASGOW_HASKELL__) || __GLASGOW_HASKELL__ >= 601
import System.IO ( openBinaryFile )
#else
import IOExts ( openFileEx, IOModeEx(..) )
#endif
-#if __GLASGOW_HASKELL__ < 601
+#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ < 601
openBinaryFile fp mode = openFileEx fp (BinaryMode mode)
#endif
--- getImportsFromFile is careful to close the file afterwards, otherwise
--- we can end up with a large number of open handles before the garbage
--- collector gets around to closing them.
-getImportsFromFile :: DynFlags -> FilePath
- -> IO ([Located ModuleName], [Located ModuleName], Located ModuleName)
-getImportsFromFile dflags filename = do
- buf <- hGetStringBuffer filename
- getImports dflags buf filename
-
-getImports :: DynFlags -> StringBuffer -> FilePath
+getImports :: DynFlags -> StringBuffer -> FilePath -> FilePath
-> IO ([Located ModuleName], [Located ModuleName], Located ModuleName)
-getImports dflags buf filename = do
+getImports dflags buf filename source_filename = do
let loc = mkSrcLoc (mkFastString filename) 1 0
case unP parseHeader (mkPState buf loc dflags) of
PFailed span err -> parseError span err
- POk _ rdr_module ->
+ POk pst rdr_module -> do
+ let ms = getMessages pst
+ printErrorsAndWarnings dflags ms
+ when (errorsFound dflags ms) $ exitWith (ExitFailure 1)
case rdr_module of
- L _ (HsModule mod _ imps _ _ _ _ _) ->
+ L _ (HsModule mb_mod _ imps _ _ _ _) ->
let
- mod_name | Just located_mod <- mod = located_mod
- | otherwise = L noSrcSpan mAIN_NAME
+ main_loc = mkSrcLoc (mkFastString source_filename) 1 0
+ mod = mb_mod `orElse` L (srcLocSpan main_loc) mAIN_NAME
(src_idecls, ord_idecls) = partition isSourceIdecl (map unLoc imps)
source_imps = map getImpMod src_idecls
ordinary_imps = filter ((/= moduleName gHC_PRIM) . unLoc)
(map getImpMod ord_idecls)
-- GHC.Prim doesn't exist physically, so don't go looking for it.
in
- return (source_imps, ordinary_imps, mod_name)
+ return (source_imps, ordinary_imps, mod)
parseError span err = throwDyn $ mkPlainErrMsg span err
getOptionsFromFile :: FilePath -- input file
-> IO [Located String] -- options, if any
getOptionsFromFile filename
- = bracket (openBinaryFile filename ReadMode)
+ = Control.Exception.bracket
+ (openBinaryFile filename ReadMode)
(hClose)
(\handle ->
do buf <- hGetStringBufferBlock handle blockSize
, ITclose_prag <- getToken close
= map (L (getLoc open)) ["-#include",removeSpaces str] `combine`
parseToks xs
+ parseToks (open:close:xs)
+ | ITdocOptions str <- getToken open
+ , ITclose_prag <- getToken close
+ = map (L (getLoc open)) ["-haddock-opts", removeSpaces str]
+ `combine` parseToks xs
+ parseToks (open:xs)
+ | ITdocOptionsOld str <- getToken open
+ = map (L (getLoc open)) ["-haddock-opts", removeSpaces str]
+ `combine` parseToks xs
parseToks (open:xs)
| ITlanguage_prag <- getToken open
= parseLanguage xs
checkExtension :: Located FastString -> Located String
checkExtension (L l ext)
- = case reads (unpackFS ext) of
- [] -> languagePragParseError l
- (okExt,""):_ -> case extensionsToGHCFlag [okExt] of
- ([],[opt]) -> L l opt
- _ -> unsupportedExtnError l okExt
+-- Checks if a given extension is valid, and if so returns
+-- its corresponding flag. Otherwise it throws an exception.
+ = let ext' = unpackFS ext in
+ if ext' `elem` supportedLanguages
+ || ext' `elem` (map ("No"++) supportedLanguages)
+ then L l ("-X"++ext')
+ else unsupportedExtnError l ext'
languagePragParseError loc =
pgmError (showSDoc (mkLocMessage loc (
unsupportedExtnError loc unsup =
pgmError (showSDoc (mkLocMessage loc (
text "unsupported extension: " <>
- (text.show) unsup)))
+ text unsup)))
optionsErrorMsgs :: [String] -> [Located String] -> FilePath -> Messages
projects / ghc-hetmet.git / blobdiff