forked from GitHub/gf-core
106 lines
4.5 KiB
Haskell
106 lines
4.5 KiB
Haskell
module GF.Compile.PGFtoJS (pgf2js) where
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import PGF(showCId)
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import PGF.Internal 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.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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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 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,[DepPragma],Int,Maybe ([Equation],[[M.Instr]]),Double)) -> 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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lit2js (LStr s) = JS.EStr s
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lit2js (LInt n) = JS.EInt n
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lit2js (LFlt d) = JS.EDbl d
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concrete2js :: (CId,Concr) -> JS.Property
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concrete2js (c,cnc) =
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JS.Prop l (new "GFConcrete" [mapToJSObj (lit2js) $ cflags cnc,
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JS.EObj $ [JS.Prop (JS.IntPropName cat) (JS.EArray (map frule2js (Set.toList set))) | (cat,set) <- IntMap.toList (productions cnc)],
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JS.EArray $ (map ffun2js (Array.elems (cncfuns cnc))),
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JS.EArray $ (map seq2js (Array.elems (sequences cnc))),
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JS.EObj $ map cats (Map.assocs (cnccats cnc)),
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JS.EInt (totalCats cnc)])
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where
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l = JS.IdentPropName (JS.Ident (showCId c))
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{-
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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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-}
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cats (c,CncCat start end _) = JS.Prop (JS.IdentPropName (JS.Ident (showCId c))) (JS.EObj [JS.Prop (JS.IdentPropName (JS.Ident "s")) (JS.EInt start)
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,JS.Prop (JS.IdentPropName (JS.Ident "e")) (JS.EInt end)])
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{-
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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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-}
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children :: JS.Ident
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children = JS.Ident "cs"
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frule2js :: Production -> JS.Expr
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frule2js (PApply funid args) = new "Apply" [JS.EInt funid, JS.EArray (map farg2js args)]
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frule2js (PCoerce arg) = new "Coerce" [JS.EInt arg]
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farg2js (PArg hypos fid) = new "PArg" (map (JS.EInt . snd) hypos ++ [JS.EInt fid])
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ffun2js (CncFun fns lins) = new "CncFun" [JS.EArray (map (JS.EStr . showCId) fns), JS.EArray (map JS.EInt (Array.elems lins))]
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seq2js :: Array.Array DotPos Symbol -> JS.Expr
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seq2js seq = JS.EArray [sym2js s | s <- Array.elems seq]
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sym2js :: Symbol -> JS.Expr
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sym2js (SymCat n l) = new "SymCat" [JS.EInt n, JS.EInt l]
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sym2js (SymLit n l) = new "SymLit" [JS.EInt n, JS.EInt l]
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sym2js (SymVar n l) = new "SymVar" [JS.EInt n, JS.EInt l]
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sym2js (SymKS t) = new "SymKS" [JS.EStr t]
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sym2js (SymKP ts alts) = new "SymKP" [JS.EArray (map sym2js ts), JS.EArray (map alt2js alts)]
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sym2js SymBIND = new "SymKS" [JS.EStr "&+"]
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sym2js SymSOFT_BIND = new "SymKS" [JS.EStr "&+"]
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sym2js SymSOFT_SPACE = new "SymKS" [JS.EStr "&+"]
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sym2js SymCAPIT = new "SymKS" [JS.EStr "&|"]
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sym2js SymALL_CAPIT = new "SymKS" [JS.EStr "&|"]
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sym2js SymNE = new "SymNE" []
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alt2js (ps,ts) = new "Alt" [JS.EArray (map sym2js 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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