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module GetGFC where
import Operations
import ParGFC
import GFC
import MkGFC
import Modules
import GetGrammar (err2err) ---
import UseIO
getCanonModule :: FilePath -> IOE CanonModule
getCanonModule file = do
gr <- getCanonGrammar file
case modules gr of
[m] -> return m
_ -> ioeErr $ Bad "expected exactly one module in a file"
getCanonGrammar :: FilePath -> IOE CanonGrammar
getCanonGrammar file = do
s <- ioeIO $ readFileIf file
c <- ioeErr {- $ err2err -} $ pCanon $ myLexer s
return $ canon2grammar c
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