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forked from GitHub/gf-core

efficient and nicer implementation for literal categories

This commit is contained in:
krasimir
2008-10-21 14:30:36 +00:00
parent 6633ae71f1
commit 0606de738e
6 changed files with 62 additions and 58 deletions

View File

@@ -128,6 +128,7 @@ lins2js p ls = JS.EArray [JS.EArray [sym2js s | s <- Array.elems (sequences p Ar
sym2js :: FSymbol -> JS.Expr
sym2js (FSymCat n l) = new "ArgProj" [JS.EInt n, JS.EInt l]
sym2js (FSymLit n l) = new "ArgProj" [JS.EInt n, JS.EInt l]
sym2js (FSymTok (KS t)) = new "Terminal" [JS.EStr t]
new :: String -> [JS.Expr] -> JS.Expr

View File

@@ -162,7 +162,10 @@ convertArg (C max) nr path lbl_path lin lins = do
convertArg (S _) nr path lbl_path lin lins = do
(_, args) <- readState
let PFCat _ cat rcs tcs = args !! nr
return ((lbl_path, FSymCat nr (index path rcs 0) : lin) : lins)
l = index path rcs 0
sym | isLiteralCat cat = FSymLit nr l
| otherwise = FSymCat nr l
return ((lbl_path, sym : lin) : lins)
where
index lbl' (lbl:lbls) idx
| lbl' == lbl = idx
@@ -257,7 +260,7 @@ expandHOAS abs_defs cnc_defs lincats env =
add_hoFun env (n,cat) =
let linRec = reverse $
[(l ,[FSymCat 0 i]) | (l,i) <- case arg of {PFCat _ _ rcs _ -> zip rcs [0..]}] ++
[([],[FSymCat i 0]) | i <- [1..n]]
[([],[FSymLit i 0]) | i <- [1..n]]
(env1,lins) = List.mapAccumL addFSeq env linRec
newLinRec = mkArray lins
@@ -274,7 +277,7 @@ expandHOAS abs_defs cnc_defs lincats env =
-- add one PMCFG function for each high-order category: _V : Var -> Cat
add_varFun env cat =
let (env1,seqid) = addFSeq env ([],[FSymCat 0 0])
let (env1,seqid) = addFSeq env ([],[FSymLit 0 0])
lins = replicate (case res of {PFCat _ _ rcs _ -> length rcs}) seqid
(env2,funid) = addFFun env1 (FFun _V [[0]] (mkArray lins))
env3 = foldl (\env res -> addProduction env2 res (FApply funid [fcatVar]))