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-- | Custom Setup that runs bnfc to generate the language sub-libraries
-- for the parsers included in Ogma.
module Main (main) where
import Distribution.Simple ( defaultMainWithHooks, hookedPrograms,
postConf, preBuild, simpleUserHooks )
import Distribution.Simple.Program ( Program (..), findProgramVersion,
simpleProgram )
import System.Process ( system )
-- | Run BNFC on the grammar before the actual build step.
--
-- All options for bnfc are hard-coded here. There is an open bug in Cabal's
-- github repo about supporting BNFC.
main :: IO ()
main = defaultMainWithHooks $ simpleUserHooks
{ hookedPrograms = [ bnfcProgram ]
, postConf = \args flags packageDesc localBuildInfo -> do
_ <- system "bnfc --haskell -p Language.SMV -o src/ grammar/SMV.cf"
postConf simpleUserHooks args flags packageDesc localBuildInfo
}
-- | TODO: This should be in Cabal.Distribution.Simple.Program.Builtin.
bnfcProgram :: Program
bnfcProgram = (simpleProgram "bnfc")
{ programFindVersion = findProgramVersion "--version" id
}
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