1 files changed, 117 insertions, 0 deletions
diff --git a/src/GF/Compile/GFCCtoJS.hs b/src/GF/Compile/GFCCtoJS.hs
new file mode 100644
index 000000000..8259e7385
--- /dev/null
+++ b/src/GF/Compile/GFCCtoJS.hs
@@ -0,0 +1,117 @@
+module GF.Compile.GFCCtoJS (pgf2js) where
+
+import PGF.CId
+import PGF.Data
+import qualified PGF.Macros as M
+import qualified GF.JavaScript.AbsJS as JS
+import qualified GF.JavaScript.PrintJS as JS
+
+import GF.Text.UTF8
+import GF.Data.ErrM
+import GF.Infra.Option
+
+import Control.Monad (mplus)
+import Data.Array (Array)
+import qualified Data.Array as Array
+import Data.Maybe (fromMaybe)
+import qualified Data.Map as Map
+
+pgf2js :: PGF -> String
+pgf2js pgf =
+  encodeUTF8 $ JS.printTree $ JS.Program [JS.ElStmt $ JS.SDeclOrExpr $ JS.Decl [JS.DInit (JS.Ident n) grammar]]
+ where
+   n  = prCId $ absname pgf
+   as = abstract pgf
+   cs = Map.assocs (concretes pgf)
+   start = M.lookStartCat pgf
+   grammar = new "GFGrammar" [js_abstract, js_concrete]
+   js_abstract = abstract2js start as
+   js_concrete = JS.EObj $ map (concrete2js start n) cs
+
+abstract2js :: String -> Abstr -> JS.Expr
+abstract2js start ds = new "GFAbstract" [JS.EStr start, JS.EObj $ map absdef2js (Map.assocs (funs ds))]
+
+absdef2js :: (CId,(Type,Expr)) -> JS.Property
+absdef2js (f,(typ,_)) =
+  let (args,cat) = M.catSkeleton typ in 
+    JS.Prop (JS.IdentPropName (JS.Ident (prCId f))) (new "Type" [JS.EArray [JS.EStr (prCId x) | x <- args], JS.EStr (prCId cat)])
+
+concrete2js :: String -> String -> (CId,Concr) -> JS.Property
+concrete2js start n (c, cnc) =
+    JS.Prop l (new "GFConcrete" ([(JS.EObj $ ((map (cncdef2js n (prCId c)) ds) ++ litslins))] ++
+                                 maybe [] (parser2js start) (parser cnc)))
+  where 
+   l  = JS.IdentPropName (JS.Ident (prCId c))
+   ds = concatMap Map.assocs [lins cnc, opers cnc, lindefs cnc]
+   litslins = [JS.Prop (JS.StringPropName    "Int") (JS.EFun [children] [JS.SReturn $ new "Arr" [JS.EIndex (JS.EVar children) (JS.EInt 0)]]), 
+               JS.Prop (JS.StringPropName  "Float") (JS.EFun [children] [JS.SReturn $ new "Arr" [JS.EIndex (JS.EVar children) (JS.EInt 0)]]),
+               JS.Prop (JS.StringPropName "String") (JS.EFun [children] [JS.SReturn $ new "Arr" [JS.EIndex (JS.EVar children) (JS.EInt 0)]])]
+
+
+cncdef2js :: String -> String -> (CId,Term) -> JS.Property
+cncdef2js n l (f, t) = JS.Prop (JS.IdentPropName (JS.Ident (prCId f))) (JS.EFun [children] [JS.SReturn (term2js n l t)])
+
+term2js :: String -> String -> Term -> JS.Expr
+term2js n l t = f t
+  where 
+  f t = 
+    case t of
+      R xs           -> new "Arr" (map f xs)
+      P x y          -> JS.ECall (JS.EMember (f x) (JS.Ident "sel")) [f y]
+      S xs           -> mkSeq (map f xs)
+      K t            -> tokn2js t
+      V i            -> JS.EIndex (JS.EVar children) (JS.EInt i)
+      C i            -> new "Int" [JS.EInt i]
+      F f            -> JS.ECall (JS.EMember (JS.EIndex (JS.EMember (JS.EVar $ JS.Ident n) (JS.Ident "concretes")) (JS.EStr l)) (JS.Ident "rule")) [JS.EStr (prCId f), JS.EVar children]
+      FV xs          -> new "Variants" (map f xs)
+      W str x        -> new "Suffix" [JS.EStr str, f x]
+      TM _           -> new "Meta" []
+
+tokn2js :: Tokn -> JS.Expr
+tokn2js (KS s) = mkStr s
+tokn2js (KP ss vs) = mkSeq (map mkStr ss) -- FIXME
+
+mkStr :: String -> JS.Expr
+mkStr s = new "Str" [JS.EStr s]
+
+mkSeq :: [JS.Expr] -> JS.Expr
+mkSeq [x] = x
+mkSeq xs = new "Seq" xs
+
+argIdent :: Integer -> JS.Ident
+argIdent n = JS.Ident ("x" ++ show n)
+
+children :: JS.Ident
+children = JS.Ident "cs"
+
+-- Parser
+parser2js :: String -> ParserInfo -> [JS.Expr]
+parser2js start p  = [new "Parser" [JS.EStr start,
+                                    JS.EArray $ map frule2js (Array.elems (allRules p)),
+                                    JS.EObj $ map cats (Map.assocs (startupCats p))]]
+  where 
+    cats (c,is) = JS.Prop (JS.IdentPropName (JS.Ident (prCId c))) (JS.EArray (map JS.EInt is))
+
+frule2js :: FRule -> JS.Expr
+frule2js (FRule f ps args res lins) = new "Rule" [JS.EInt res, name2js (f,ps), JS.EArray (map JS.EInt args), lins2js lins]
+
+name2js :: (CId,[Profile]) -> JS.Expr
+name2js (f,ps) | f == wildCId = fromProfile (head ps)
+               | otherwise    = new "FunApp" $ [JS.EStr $ prCId f, JS.EArray (map fromProfile ps)]
+  where
+    fromProfile :: Profile -> JS.Expr
+    fromProfile []   = new "MetaVar" []
+    fromProfile [x]  = daughter x
+    fromProfile args = new "Unify" [JS.EArray (map daughter args)]
+
+    daughter i = new "Arg" [JS.EInt i]
+
+lins2js :: Array FIndex (Array FPointPos FSymbol) -> JS.Expr
+lins2js ls = JS.EArray [ JS.EArray [ sym2js s | s <- Array.elems l] | l <- Array.elems ls]
+
+sym2js :: FSymbol -> JS.Expr
+sym2js (FSymCat l n) = new "ArgProj" [JS.EInt n, JS.EInt l]
+sym2js (FSymTok t) = new "Terminal" [JS.EStr t]
+
+new :: String -> [JS.Expr] -> JS.Expr
+new f xs = JS.ENew (JS.Ident f) xs