"Committed_by_peb"

src/GF/Parsing/ParseCFG.hs

@@ -0,0 +1,43 @@
+----------------------------------------------------------------------
+-- |
+-- Module      : ParseCFG
+-- Maintainer  : PL
+-- Stability   : (stable)
+-- Portability : (portable)
+--
+-- > CVS $Date: 2005/03/21 14:17:42 $ 
+-- > CVS $Author: peb $
+-- > CVS $Revision: 1.1 $
+--
+-- Main parsing module for context-free grammars
+-----------------------------------------------------------------------------
+
+
+module GF.Parsing.ParseCFG (parse) where
+
+import Char (toLower)
+import GF.Parsing.Parser
+import GF.Conversion.CFGrammar
+import qualified GF.Parsing.CFParserGeneral as PGen
+import qualified GF.Parsing.CFParserIncremental as PInc
+
+
+parse :: (Ord n, Ord c, Ord t, Show t) => 
+	 String -> CFParser n c t
+parse = decodeParser . map toLower
+
+decodeParser ['g',s]   = PGen.parse (decodeStrategy s)
+decodeParser ['i',s,f] = PInc.parse (decodeStrategy s, decodeFilter f)
+decodeParser _ = decodeParser "ibn"
+
+decodeStrategy 'b' = (True, False)
+decodeStrategy 't' = (False, True)
+
+decodeFilter 'a' = (True, True)
+decodeFilter 'b' = (True, False)
+decodeFilter 't' = (False, True)
+decodeFilter 'n' = (False, False)
+
+
+
+