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{-# LANGUAGE RecordWildCards #-}
import Options.Applicative
import Data.Aeson
import qualified Data.ByteString.Lazy as B
import LambdaCube.Compiler.Driver
import System.FilePath
import Paths_lambdacube_compiler (getDataDir)
data Config
= Config
{ srcName :: String
, backend :: Backend
, sourceDir :: FilePath
}
sample :: Parser Config
sample = Config
<$> argument str (metavar "SOURCE_FILE")
<*> flag OpenGL33 WebGL1 (long "webgl" <> help "generate WebGL 1.0 pipeline" )
<*> pure "/lc"
main :: IO ()
main = do
cabalDataDir <- getDataDir
cfg <- execParser opts
compile (cfg {sourceDir = cabalDataDir </> "lc"})
where
opts = info (helper <*> sample)
( fullDesc
<> progDesc "compiles LambdaCube graphics pipeline source to JSON IR"
<> header "LambdaCube 3D compiler" )
compile :: Config -> IO ()
compile Config{..} = do
let dropExt n | takeExtension n == ".lc" = dropExtension n
dropExt n = n
baseName = dropExt srcName
pplRes <- compileMain [".", sourceDir] backend baseName
case pplRes of
Left err -> putStrLn err
Right ppl -> do
B.writeFile (baseName <> ".json") $ encode ppl
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