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completely phrase based parser and support for pre {} in PMCFG

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krasimir
2009-06-16 11:56:08 +00:00
parent 9ba7a9e420
commit 194a185e63
12 changed files with 147 additions and 68 deletions
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24
src/PGF/PMCFG.hs
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@@ -16,24 +16,20 @@ type FPointPos = Int
data FSymbol
= FSymCat {-# UNPACK #-} !Int {-# UNPACK #-} !FIndex
| FSymLit {-# UNPACK #-} !Int {-# UNPACK #-} !FIndex
| FSymTok Tokn
| FSymKS [String]
| FSymKP [String] [Alternative]
deriving (Eq,Ord,Show)
type Profile = [Int]
data Production
= FApply {-# UNPACK #-} !FunId [FCat]
| FCoerce {-# UNPACK #-} !FCat
| FConst Tree String
| FConst Tree [String]
deriving (Eq,Ord,Show)
data FFun = FFun CId [Profile] {-# UNPACK #-} !(UArray FIndex SeqId) deriving (Eq,Ord,Show)
type FSeq = Array FPointPos FSymbol
type FunId = Int
type SeqId = Int
data Tokn =
KS String
| KP [String] [Alternative]
deriving (Eq,Ord,Show)
data Alternative =
Alt [String] [String]
deriving (Eq,Ord,Show)
@@ -70,8 +66,8 @@ ppProduction (fcat,FApply funid args) =
ppFCat fcat <+> text "->" <+> ppFunId funid <> brackets (hcat (punctuate comma (map ppFCat args)))
ppProduction (fcat,FCoerce arg) =
ppFCat fcat <+> text "->" <+> char '_' <> brackets (ppFCat arg)
ppProduction (fcat,FConst _ s) =
ppFCat fcat <+> text "->" <+> ppStr s
ppProduction (fcat,FConst _ ss) =
ppFCat fcat <+> text "->" <+> ppStrs ss
ppFun (funid,FFun fun _ arr) =
ppFunId funid <+> text ":=" <+> parens (hcat (punctuate comma (map ppSeqId (elems arr)))) <+> brackets (text (prCId fun))
@@ -84,14 +80,12 @@ ppStartCat (id,fcats) =
ppSymbol (FSymCat d r) = char '<' <> int d <> comma <> int r <> char '>'
ppSymbol (FSymLit d r) = char '<' <> int d <> comma <> int r <> char '>'
ppSymbol (FSymTok t) = ppTokn t
ppSymbol (FSymKS ts) = ppStrs ts
ppSymbol (FSymKP ts alts) = text "pre" <+> braces (hsep (punctuate semi (ppStrs ts : map ppAlt alts)))
ppTokn (KS t) = ppStr t
ppTokn (KP ts alts) = text "pre" <+> braces (hsep (punctuate semi (hsep (map ppStr ts) : map ppAlt alts)))
ppAlt (Alt ts ps) = ppStrs ts <+> char '/' <+> hsep (map (doubleQuotes . text) ps)
ppAlt (Alt ts ps) = hsep (map ppStr ts) <+> char '/' <+> hsep (map ppStr ps)
ppStr s = doubleQuotes (text s)
ppStrs ss = doubleQuotes (hsep (map text ss))
ppFCat fcat
| fcat == fcatString = text "String"