From ac00f77dadd4d447803dd7cab5a36f47365325d0 Mon Sep 17 00:00:00 2001 From: peb Date: Mon, 11 Apr 2005 12:57:45 +0000 Subject: "Committed_by_peb" --- src/GF/OldParsing/ParseCFG.hs | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 src/GF/OldParsing/ParseCFG.hs (limited to 'src/GF/OldParsing/ParseCFG.hs') diff --git a/src/GF/OldParsing/ParseCFG.hs b/src/GF/OldParsing/ParseCFG.hs new file mode 100644 index 000000000..7cba41175 --- /dev/null +++ b/src/GF/OldParsing/ParseCFG.hs @@ -0,0 +1,43 @@ +---------------------------------------------------------------------- +-- | +-- Module : ParseCFG +-- Maintainer : PL +-- Stability : (stable) +-- Portability : (portable) +-- +-- > CVS $Date: 2005/04/11 13:52:54 $ +-- > CVS $Author: peb $ +-- > CVS $Revision: 1.1 $ +-- +-- Main parsing module for context-free grammars +----------------------------------------------------------------------------- + + +module GF.OldParsing.ParseCFG (parse) where + +import Char (toLower) +import GF.OldParsing.Utilities +import GF.OldParsing.CFGrammar +import qualified GF.OldParsing.ParseCFG.General as PGen +import qualified GF.OldParsing.ParseCFG.Incremental 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) + + + + -- cgit v1.2.3