Files
gf-core/src/GF/Compile/GetGrammar.hs

53 lines
1.7 KiB
Haskell

----------------------------------------------------------------------
-- |
-- Module : GetGrammar
-- Maintainer : AR
-- Stability : (stable)
-- Portability : (portable)
--
-- > CVS $Date: 2005/11/15 17:56:13 $
-- > CVS $Author: aarne $
-- > CVS $Revision: 1.16 $
--
-- this module builds the internal GF grammar that is sent to the type checker
-----------------------------------------------------------------------------
module GF.Compile.GetGrammar (getSourceModule, addOptionsToModule) where
import GF.Data.Operations
import GF.Infra.UseIO
import GF.Infra.Modules
import GF.Infra.Option
import GF.Grammar.Lexer
import GF.Grammar.Parser
import GF.Grammar.Grammar
import GF.Compile.ReadFiles
import Data.Char (toUpper)
import Data.List (nub)
import qualified Data.ByteString.Char8 as BS
import Control.Monad (foldM)
import System.Cmd (system)
getSourceModule :: Options -> FilePath -> IOE SourceModule
getSourceModule opts file0 = ioe $
catch (do file <- foldM runPreprocessor file0 (flag optPreprocessors opts)
content <- BS.readFile file
case runP pModDef content of
Left (Pn l c,msg) -> return (Bad (file++":"++show l++":"++show c++": "++msg))
Right mo -> return (Ok (addOptionsToModule opts mo)))
(\e -> return (Bad (show e)))
addOptionsToModule :: Options -> SourceModule -> SourceModule
addOptionsToModule opts = mapSourceModule (\m -> m { flags = flags m `addOptions` opts })
-- FIXME: should use System.IO.openTempFile
runPreprocessor :: FilePath -> String -> IO FilePath
runPreprocessor file0 p = do
let tmp = "_gf_preproc.tmp"
cmd = p +++ file0 ++ ">" ++ tmp
system cmd
return tmp