mirror of
https://github.com/GrammaticalFramework/gf-core.git
synced 2026-04-12 22:39:31 -06:00
136 lines
3.7 KiB
Haskell
136 lines
3.7 KiB
Haskell
----------------------------------------------------------------------
|
|
-- |
|
|
-- Module : GFCCAPI
|
|
-- Maintainer : Aarne Ranta
|
|
-- Stability : (stable)
|
|
-- Portability : (portable)
|
|
--
|
|
-- > CVS $Date:
|
|
-- > CVS $Author:
|
|
-- > CVS $Revision:
|
|
--
|
|
-- Reduced Application Programmer's Interface to GF, meant for
|
|
-- embedded GF systems. AR 19/9/2007
|
|
-----------------------------------------------------------------------------
|
|
|
|
module GF.GFCC.API where
|
|
|
|
import GF.GFCC.Linearize
|
|
import GF.GFCC.Generate
|
|
import GF.GFCC.Macros
|
|
import GF.GFCC.DataGFCC
|
|
import GF.GFCC.CId
|
|
import GF.GFCC.Raw.ConvertGFCC
|
|
import GF.GFCC.Raw.ParGFCCRaw
|
|
import GF.Command.PPrTree
|
|
|
|
import GF.Data.ErrM
|
|
|
|
import GF.Parsing.FCFG
|
|
|
|
import qualified Data.Map as Map
|
|
import System.Random (newStdGen)
|
|
import System.Directory (doesFileExist)
|
|
|
|
|
|
-- This API is meant to be used when embedding GF grammars in Haskell
|
|
-- programs. The embedded system is supposed to use the
|
|
-- .gfcc grammar format, which is first produced by the gf program.
|
|
|
|
---------------------------------------------------
|
|
-- Interface
|
|
---------------------------------------------------
|
|
|
|
data MultiGrammar = MultiGrammar {gfcc :: GFCC}
|
|
type Language = String
|
|
type Category = String
|
|
type Tree = Exp
|
|
|
|
file2grammar :: FilePath -> IO MultiGrammar
|
|
|
|
linearize :: MultiGrammar -> Language -> Tree -> String
|
|
parse :: MultiGrammar -> Language -> Category -> String -> [Tree]
|
|
|
|
linearizeAll :: MultiGrammar -> Tree -> [String]
|
|
linearizeAllLang :: MultiGrammar -> Tree -> [(Language,String)]
|
|
|
|
parseAll :: MultiGrammar -> Category -> String -> [[Tree]]
|
|
parseAllLang :: MultiGrammar -> Category -> String -> [(Language,[Tree])]
|
|
|
|
generateAll :: MultiGrammar -> Category -> [Tree]
|
|
generateRandom :: MultiGrammar -> Category -> IO [Tree]
|
|
generateAllDepth :: MultiGrammar -> Category -> Maybe Int -> [Tree]
|
|
|
|
readTree :: MultiGrammar -> String -> Tree
|
|
showTree :: Tree -> String
|
|
|
|
languages :: MultiGrammar -> [Language]
|
|
categories :: MultiGrammar -> [Category]
|
|
|
|
startCat :: MultiGrammar -> Category
|
|
|
|
---------------------------------------------------
|
|
-- Implementation
|
|
---------------------------------------------------
|
|
|
|
file2grammar f = do
|
|
gfcc <- file2gfcc f
|
|
return (MultiGrammar gfcc)
|
|
|
|
file2gfcc f = do
|
|
s <- readFileIf f
|
|
g <- parseGrammar s
|
|
return $ toGFCC g
|
|
|
|
linearize mgr lang = GF.GFCC.Linearize.linearize (gfcc mgr) (mkCId lang)
|
|
|
|
parse mgr lang cat s =
|
|
case lookParser (gfcc mgr) (mkCId lang) of
|
|
Nothing -> error "no parser"
|
|
Just pinfo -> case parseFCF "bottomup" pinfo (mkCId cat) (words s) of
|
|
Ok x -> x
|
|
Bad s -> error s
|
|
|
|
linearizeAll mgr = map snd . linearizeAllLang mgr
|
|
linearizeAllLang mgr t =
|
|
[(lang,linearThis mgr lang t) | lang <- languages mgr]
|
|
|
|
parseAll mgr cat = map snd . parseAllLang mgr cat
|
|
|
|
parseAllLang mgr cat s =
|
|
[(lang,ts) | lang <- languages mgr, let ts = parse mgr lang cat s, not (null ts)]
|
|
|
|
generateRandom mgr cat = do
|
|
gen <- newStdGen
|
|
return $ genRandom gen (gfcc mgr) (mkCId cat)
|
|
|
|
generateAll mgr cat = generate (gfcc mgr) (mkCId cat) Nothing
|
|
generateAllDepth mgr cat = generate (gfcc mgr) (mkCId cat)
|
|
|
|
readTree _ = pTree
|
|
|
|
showTree = prExp
|
|
|
|
abstractName mgr = prCId (absname (gfcc mgr))
|
|
|
|
languages mgr = [prCId l | l <- cncnames (gfcc mgr)]
|
|
|
|
categories mgr = [prCId c | c <- Map.keys (cats (abstract (gfcc mgr)))]
|
|
|
|
startCat mgr = lookStartCat (gfcc mgr)
|
|
|
|
emptyMultiGrammar = MultiGrammar emptyGFCC
|
|
|
|
------------ for internal use only
|
|
|
|
linearThis = GF.GFCC.API.linearize
|
|
|
|
err f g ex = case ex of
|
|
Ok x -> g x
|
|
Bad s -> f s
|
|
|
|
readFileIf f = do
|
|
b <- doesFileExist f
|
|
if b then readFile f
|
|
else putStrLn ("file " ++ f ++ " not found") >> return ""
|