forked from GitHub/gf-core
51 lines
1.6 KiB
Haskell
51 lines
1.6 KiB
Haskell
module GF.Command.Importing (importGrammar, importSource) where
|
|
|
|
import PGF
|
|
import PGF.Data
|
|
|
|
import GF.Compile
|
|
import GF.Grammar.Grammar (SourceGrammar) -- for cc command
|
|
import GF.Grammar.CF
|
|
import GF.Infra.UseIO
|
|
import GF.Infra.Option
|
|
import GF.Data.ErrM
|
|
|
|
import Data.List (nubBy)
|
|
import System.FilePath
|
|
|
|
-- import a grammar in an environment where it extends an existing grammar
|
|
importGrammar :: PGF -> Options -> [FilePath] -> IO PGF
|
|
importGrammar pgf0 _ [] = return pgf0
|
|
importGrammar pgf0 opts files =
|
|
case takeExtensions (last files) of
|
|
".cf" -> do
|
|
s <- fmap unlines $ mapM readFile files
|
|
let cnc = justModuleName (last files)
|
|
gf <- case getCF cnc s of
|
|
Ok g -> return g
|
|
Bad s -> error s ----
|
|
Ok gr <- appIOE $ compileSourceGrammar opts gf
|
|
epgf <- appIOE $ link opts (cnc ++ "Abs") gr
|
|
case epgf of
|
|
Ok pgf -> return pgf
|
|
Bad s -> error s ----
|
|
s | elem s [".gf",".gfo"] -> do
|
|
res <- appIOE $ compileToPGF opts files
|
|
case res of
|
|
Ok pgf2 -> do return $ unionPGF pgf0 pgf2
|
|
Bad msg -> do putStrLn ('\n':'\n':msg)
|
|
return pgf0
|
|
".pgf" -> do
|
|
pgf2 <- mapM readPGF files >>= return . foldl1 unionPGF
|
|
return $ unionPGF pgf0 pgf2
|
|
ext -> die $ "Unknown filename extension: " ++ show ext
|
|
|
|
importSource :: SourceGrammar -> Options -> [FilePath] -> IO SourceGrammar
|
|
importSource src0 opts files = do
|
|
src <- appIOE $ batchCompile opts files
|
|
case src of
|
|
Ok gr -> return gr
|
|
Bad msg -> do
|
|
putStrLn msg
|
|
return src0
|