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https://github.com/GrammaticalFramework/gf-core.git
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rename some modules that had GFCC in the name to PGF+something
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krasimir
122
src/compiler/GF/Compile/PGFtoJS.hs
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122
src/compiler/GF/Compile/PGFtoJS.hs
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module GF.Compile.PGFtoJS (pgf2js) where
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import PGF.CId
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import PGF.Data hiding (mkStr)
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import qualified PGF.Macros as M
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import qualified GF.JavaScript.AbsJS as JS
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import qualified GF.JavaScript.PrintJS as JS
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import GF.Text.UTF8
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import GF.Data.ErrM
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import GF.Infra.Option
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import Control.Monad (mplus)
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import Data.Array.Unboxed (UArray)
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import qualified Data.Array.IArray as Array
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import Data.Maybe (fromMaybe)
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import Data.Map (Map)
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import qualified Data.Set as Set
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import qualified Data.Map as Map
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import qualified Data.IntMap as IntMap
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pgf2js :: PGF -> String
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pgf2js pgf =
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encodeUTF8 $ JS.printTree $ JS.Program [JS.ElStmt $ JS.SDeclOrExpr $ JS.Decl [JS.DInit (JS.Ident n) grammar]]
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where
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n = showCId $ absname pgf
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as = abstract pgf
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cs = Map.assocs (concretes pgf)
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start = showCId $ M.lookStartCat pgf
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grammar = new "GFGrammar" [js_abstract, js_concrete]
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js_abstract = abstract2js start as
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js_concrete = JS.EObj $ map (concrete2js n) cs
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abstract2js :: String -> Abstr -> JS.Expr
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abstract2js start ds = new "GFAbstract" [JS.EStr start, JS.EObj $ map absdef2js (Map.assocs (funs ds))]
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absdef2js :: (CId,(Type,Int,[Equation])) -> JS.Property
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absdef2js (f,(typ,_,_)) =
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let (args,cat) = M.catSkeleton typ in
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JS.Prop (JS.IdentPropName (JS.Ident (showCId f))) (new "Type" [JS.EArray [JS.EStr (showCId x) | x <- args], JS.EStr (showCId cat)])
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concrete2js :: String -> (CId,Concr) -> JS.Property
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concrete2js n (c, cnc) =
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JS.Prop l (new "GFConcrete" ([flags,(JS.EObj $ ((map (cncdef2js n (showCId c)) ds) ++ litslins))] ++
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maybe [] parser2js (parser cnc)))
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where
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flags = mapToJSObj JS.EStr $ cflags cnc
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l = JS.IdentPropName (JS.Ident (showCId c))
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ds = concatMap Map.assocs [lins cnc, opers cnc, lindefs cnc]
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litslins = [JS.Prop (JS.StringPropName "Int") (JS.EFun [children] [JS.SReturn $ new "Arr" [JS.EIndex (JS.EVar children) (JS.EInt 0)]]),
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JS.Prop (JS.StringPropName "Float") (JS.EFun [children] [JS.SReturn $ new "Arr" [JS.EIndex (JS.EVar children) (JS.EInt 0)]]),
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JS.Prop (JS.StringPropName "String") (JS.EFun [children] [JS.SReturn $ new "Arr" [JS.EIndex (JS.EVar children) (JS.EInt 0)]])]
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cncdef2js :: String -> String -> (CId,Term) -> JS.Property
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cncdef2js n l (f, t) = JS.Prop (JS.IdentPropName (JS.Ident (showCId f))) (JS.EFun [children] [JS.SReturn (term2js n l t)])
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term2js :: String -> String -> Term -> JS.Expr
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term2js n l t = f t
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where
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f t =
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case t of
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R xs -> new "Arr" (map f xs)
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P x y -> JS.ECall (JS.EMember (f x) (JS.Ident "sel")) [f y]
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S xs -> mkSeq (map f xs)
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K t -> tokn2js t
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V i -> JS.EIndex (JS.EVar children) (JS.EInt i)
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C i -> new "Int" [JS.EInt i]
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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 (showCId f), JS.EVar children]
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FV xs -> new "Variants" (map f xs)
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W str x -> new "Suffix" [JS.EStr str, f x]
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TM _ -> new "Meta" []
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tokn2js :: Tokn -> JS.Expr
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tokn2js (KS s) = mkStr s
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tokn2js (KP ss vs) = mkSeq (map mkStr ss) -- FIXME
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mkStr :: String -> JS.Expr
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mkStr s = new "Str" [JS.EStr s]
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mkSeq :: [JS.Expr] -> JS.Expr
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mkSeq [x] = x
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mkSeq xs = new "Seq" xs
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argIdent :: Integer -> JS.Ident
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argIdent n = JS.Ident ("x" ++ show n)
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children :: JS.Ident
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children = JS.Ident "cs"
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-- Parser
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parser2js :: ParserInfo -> [JS.Expr]
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parser2js p = [new "Parser" [JS.EObj $ [JS.Prop (JS.IntPropName cat) (JS.EArray (map frule2js (Set.toList set))) | (cat,set) <- IntMap.toList (productions0 p)],
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JS.EArray $ (map ffun2js (Array.elems (functions p))),
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JS.EArray $ (map seq2js (Array.elems (sequences p))),
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JS.EObj $ map cats (Map.assocs (startCats p)),
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JS.EInt (totalCats p)]]
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where
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cats (c,is) = JS.Prop (JS.IdentPropName (JS.Ident (showCId c))) (JS.EArray (map JS.EInt is))
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frule2js :: Production -> JS.Expr
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frule2js (FApply funid args) = new "Rule" [JS.EInt funid, JS.EArray (map JS.EInt args)]
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frule2js (FCoerce arg) = new "Coerce" [JS.EInt arg]
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ffun2js (FFun f _ lins) = new "FFun" [JS.EStr (showCId f), JS.EArray (map JS.EInt (Array.elems lins))]
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seq2js :: Array.Array FIndex FSymbol -> JS.Expr
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seq2js seq = JS.EArray [sym2js s | s <- Array.elems seq]
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sym2js :: FSymbol -> JS.Expr
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sym2js (FSymCat n l) = new "Arg" [JS.EInt n, JS.EInt l]
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sym2js (FSymLit n l) = new "Lit" [JS.EInt n, JS.EInt l]
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sym2js (FSymKS ts) = new "KS" (map JS.EStr ts)
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sym2js (FSymKP ts alts) = new "KP" [JS.EArray (map JS.EStr ts), JS.EArray (map alt2js alts)]
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alt2js (Alt ps ts) = new "Alt" [JS.EArray (map JS.EStr ps), JS.EArray (map JS.EStr ts)]
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new :: String -> [JS.Expr] -> JS.Expr
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new f xs = JS.ENew (JS.Ident f) xs
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mapToJSObj :: (a -> JS.Expr) -> Map CId a -> JS.Expr
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mapToJSObj f m = JS.EObj [ JS.Prop (JS.IdentPropName (JS.Ident (showCId k))) (f v) | (k,v) <- Map.toList m ]
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