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|
----------------------------------------------------------------------
-- |
-- Module : MkConcrete
-- Maintainer : AR
-- Stability : (stable)
-- Portability : (portable)
--
-- > CVS $Date:
-- > CVS $Author:
-- > CVS $Revision:
--
-- Compile a gfl file into a concrete syntax by using the parser on a resource grammar.
-----------------------------------------------------------------------------
module GF.Compile.MkConcrete (mkConcrete) where
import GF.Grammar.Values (Tree,tree2exp)
import GF.Grammar.PrGrammar (prt_)
import GF.Compile.ShellState (absId,firstStateGrammar)
import GF.API
import qualified GF.Embed.EmbedAPI as EA
import GF.Data.Operations
import GF.Infra.UseIO
import GF.Infra.Option
import Data.Char
import Control.Monad
-- translate strings into lin rules by parsing in a resource
-- grammar. AR 2/6/2005
-- Format of rule (on one line):
-- lin F x y = in C "ssss" ;
-- Format of resource path (on first line):
-- --# -resource=PATH
-- Other lines are copied verbatim.
-- Assumes: resource has been built with
-- i -src -optimize=share SOURCE
-- because mcfg parsing is used.
mkConcrete :: FilePath -> IO ()
mkConcrete file = do
cont <- liftM lines $ readFileIf file
let res = getResPath cont
egr <- appIOE $ optFile2grammar (options [useOptimizer "share"]) res --- for -mcfg
gr <- err (\s -> putStrLn s >> error "resource file rejected") return egr
let abs = prt_ $ absId gr
let parser cat = errVal ([],"No parse") .
optParseArgErrMsg (options [newMParser, firstCat cat, beVerbose]) gr
let morpho = isKnownWord gr
let out = suffixFile "gf" $ justModuleName file
mapM_ (mkCnc out parser morpho) cont
getResPath :: [String] -> String
getResPath s = case head (dropWhile (all isSpace) s) of
'-':'-':'#':path -> reverse (takeWhile (not . (=='=')) (reverse path))
_ -> error "first line must be --# -resource=<PATH>"
mkCnc :: FilePath -> (String -> String -> ([Tree],String)) -> (String -> Bool) ->
String -> IO ()
mkCnc out parser morpho line = do
let (res,msg) = mkCncLine parser morpho line
appendFile out res
appendFile out "\n"
ifNull (return ()) putStrLnFlush msg
mkCncLine :: (String -> String -> ([Tree],String)) -> (String -> Bool) ->
String -> (String,String)
mkCncLine parser morpho line = case words line of
"lin" : rest | elem "in" rest -> mkLinRule "lin" rest
"oper" : rest | elem "in" rest -> mkLinRule "oper" rest
_ -> (line,[])
where
mkLinRule key s =
let
(pre,str) = span (/= "in") s
([cat],rest) = splitAt 1 $ tail str
lin = init (tail (unwords (init rest))) -- unquote
def
| last pre /= "=" = line -- ordinary lin rule
| otherwise = case parser cat lin of
([t],_) -> ind ++ key +++ unwords pre +++ prt_ (tree2exp t) +++ ";"
(t:_,_) -> ind ++ key +++ unwords pre +++ prt_ (tree2exp t) +++ ";"
+++ "-- AMBIGUOUS"
([],msg) -> "{-" ++ line ++++ morph lin ++++ "-}"
in
(def,def)
morph s = case [w | w <- words s, not (morpho w)] of
[] -> ""
ws -> "unknown words: " ++ unwords ws
ind = takeWhile isSpace line
|
