Commit 5884fd32 authored by fendor's avatar fendor

Move File Target parser to library #18596

parent 6a243e9d
......@@ -29,7 +29,7 @@ module GHC (
-- * Flags and settings
DynFlags(..), GeneralFlag(..), Severity(..), Backend(..), gopt,
GhcMode(..), GhcLink(..),
parseDynamicFlags,
parseDynamicFlags, parseTargetFiles,
getSessionDynFlags, setSessionDynFlags,
getProgramDynFlags, setProgramDynFlags, setLogAction,
getInteractiveDynFlags, setInteractiveDynFlags,
......@@ -334,7 +334,8 @@ import GHC.Types.Avail
import GHC.Types.SrcLoc
import GHC.Core
import GHC.Iface.Tidy
import GHC.Driver.Phases ( Phase(..), isHaskellSrcFilename )
import GHC.Driver.Phases ( Phase(..), isHaskellSrcFilename
, isSourceFilename, startPhase )
import GHC.Driver.Finder
import GHC.Driver.Types
import GHC.Driver.CmdLine
......@@ -387,6 +388,7 @@ import GHC.Data.Maybe
import System.IO.Error ( isDoesNotExistError )
import System.Environment ( getEnv )
import System.Directory
import Data.List (isPrefixOf)
-- %************************************************************************
......@@ -729,6 +731,88 @@ parseDynamicFlags dflags cmdline = do
dflags2 <- liftIO $ interpretPackageEnv dflags1
return (dflags2, leftovers, warns)
-- | Parse command line arguments that look like files.
-- First normalises its arguments and then splits them into source files
-- and object files.
-- A source file can be turned into a 'Target' via 'guessTarget'
parseTargetFiles :: DynFlags -> [String] -> (DynFlags, [(String, Maybe Phase)], [String])
parseTargetFiles dflags0 fileish_args =
let
normal_fileish_paths = map normalise_hyp fileish_args
(srcs, objs) = partition_args normal_fileish_paths [] []
dflags1 = dflags0 { ldInputs = map (FileOption "") objs
++ ldInputs dflags0 }
{-
We split out the object files (.o, .dll) and add them
to ldInputs for use by the linker.
The following things should be considered compilation manager inputs:
- haskell source files (strings ending in .hs, .lhs or other
haskellish extension),
- module names (not forgetting hierarchical module names),
- things beginning with '-' are flags that were not recognised by
the flag parser, and we want them to generate errors later in
checkOptions, so we class them as source files (#5921)
- and finally we consider everything without an extension to be
a comp manager input, as shorthand for a .hs or .lhs filename.
Everything else is considered to be a linker object, and passed
straight through to the linker.
-}
in (dflags1, srcs, objs)
-- -----------------------------------------------------------------------------
-- | Splitting arguments into source files and object files. This is where we
-- interpret the -x <suffix> option, and attach a (Maybe Phase) to each source
-- file indicating the phase specified by the -x option in force, if any.
partition_args :: [String] -> [(String, Maybe Phase)] -> [String]
-> ([(String, Maybe Phase)], [String])
partition_args [] srcs objs = (reverse srcs, reverse objs)
partition_args ("-x":suff:args) srcs objs
| "none" <- suff = partition_args args srcs objs
| StopLn <- phase = partition_args args srcs (slurp ++ objs)
| otherwise = partition_args rest (these_srcs ++ srcs) objs
where phase = startPhase suff
(slurp,rest) = break (== "-x") args
these_srcs = zip slurp (repeat (Just phase))
partition_args (arg:args) srcs objs
| looks_like_an_input arg = partition_args args ((arg,Nothing):srcs) objs
| otherwise = partition_args args srcs (arg:objs)
looks_like_an_input :: String -> Bool
looks_like_an_input m = isSourceFilename m
|| looksLikeModuleName m
|| "-" `isPrefixOf` m
|| not (hasExtension m)
-- | To simplify the handling of filepaths, we normalise all filepaths right
-- away. Note the asymmetry of FilePath.normalise:
-- Linux: p\/q -> p\/q; p\\q -> p\\q
-- Windows: p\/q -> p\\q; p\\q -> p\\q
-- #12674: Filenames starting with a hypen get normalised from ./-foo.hs
-- to -foo.hs. We have to re-prepend the current directory.
normalise_hyp :: FilePath -> FilePath
normalise_hyp fp
| strt_dot_sl && "-" `isPrefixOf` nfp = cur_dir ++ nfp
| otherwise = nfp
where
#if defined(mingw32_HOST_OS)
strt_dot_sl = "./" `isPrefixOf` fp || ".\\" `isPrefixOf` fp
#else
strt_dot_sl = "./" `isPrefixOf` fp
#endif
cur_dir = '.' : [pathSeparator]
nfp = normalise fp
-----------------------------------------------------------------------------
-- | Checks the set of new DynFlags for possibly erroneous option
-- combinations when invoking 'setSessionDynFlags' and friends, and if
......
......@@ -16,7 +16,7 @@ module Main (main) where
-- The official GHC API
import qualified GHC
import GHC ( Ghc, GhcMonad(..), Backend (..),
import GHC (parseTargetFiles, Ghc, GhcMonad(..), Backend (..),
LoadHowMuch(..) )
import GHC.Driver.CmdLine
......@@ -74,7 +74,6 @@ import GHC.Iface.Recomp.Binary ( fingerprintBinMem )
import System.IO
import System.Environment
import System.Exit
import System.FilePath
import Control.Monad
import Control.Monad.Trans.Class
import Control.Monad.Trans.Except (throwE, runExceptT)
......@@ -219,29 +218,7 @@ main' postLoadMode dflags0 args flagWarnings = do
liftIO $ showBanner postLoadMode dflags4
let
-- To simplify the handling of filepaths, we normalise all filepaths right
-- away. Note the asymmetry of FilePath.normalise:
-- Linux: p/q -> p/q; p\q -> p\q
-- Windows: p/q -> p\q; p\q -> p\q
-- #12674: Filenames starting with a hypen get normalised from ./-foo.hs
-- to -foo.hs. We have to re-prepend the current directory.
normalise_hyp fp
| strt_dot_sl && "-" `isPrefixOf` nfp = cur_dir ++ nfp
| otherwise = nfp
where
#if defined(mingw32_HOST_OS)
strt_dot_sl = "./" `isPrefixOf` fp || ".\\" `isPrefixOf` fp
#else
strt_dot_sl = "./" `isPrefixOf` fp
#endif
cur_dir = '.' : [pathSeparator]
nfp = normalise fp
normal_fileish_paths = map (normalise_hyp . unLoc) fileish_args
(srcs, objs) = partition_args normal_fileish_paths [] []
dflags5 = dflags4 { ldInputs = map (FileOption "") objs
++ ldInputs dflags4 }
let (dflags5, srcs, objs) = parseTargetFiles dflags4 (map unLoc fileish_args)
-- we've finished manipulating the DynFlags, update the session
_ <- GHC.setSessionDynFlags dflags5
......@@ -289,51 +266,6 @@ ghciUI hsc_env dflags0 srcs maybe_expr = do
interactiveUI defaultGhciSettings srcs maybe_expr
#endif
-- -----------------------------------------------------------------------------
-- Splitting arguments into source files and object files. This is where we
-- interpret the -x <suffix> option, and attach a (Maybe Phase) to each source
-- file indicating the phase specified by the -x option in force, if any.
partition_args :: [String] -> [(String, Maybe Phase)] -> [String]
-> ([(String, Maybe Phase)], [String])
partition_args [] srcs objs = (reverse srcs, reverse objs)
partition_args ("-x":suff:args) srcs objs
| "none" <- suff = partition_args args srcs objs
| StopLn <- phase = partition_args args srcs (slurp ++ objs)
| otherwise = partition_args rest (these_srcs ++ srcs) objs
where phase = startPhase suff
(slurp,rest) = break (== "-x") args
these_srcs = zip slurp (repeat (Just phase))
partition_args (arg:args) srcs objs
| looks_like_an_input arg = partition_args args ((arg,Nothing):srcs) objs
| otherwise = partition_args args srcs (arg:objs)
{-
We split out the object files (.o, .dll) and add them
to ldInputs for use by the linker.
The following things should be considered compilation manager inputs:
- haskell source files (strings ending in .hs, .lhs or other
haskellish extension),
- module names (not forgetting hierarchical module names),
- things beginning with '-' are flags that were not recognised by
the flag parser, and we want them to generate errors later in
checkOptions, so we class them as source files (#5921)
- and finally we consider everything without an extension to be
a comp manager input, as shorthand for a .hs or .lhs filename.
Everything else is considered to be a linker object, and passed
straight through to the linker.
-}
looks_like_an_input :: String -> Bool
looks_like_an_input m = isSourceFilename m
|| looksLikeModuleName m
|| "-" `isPrefixOf` m
|| not (hasExtension m)
-- -----------------------------------------------------------------------------
-- Option sanity checks
......
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