diff options
| author | aarne <aarne@cs.chalmers.se> | 2008-06-25 16:43:48 +0000 |
|---|---|---|
| committer | aarne <aarne@cs.chalmers.se> | 2008-06-25 16:43:48 +0000 |
| commit | b96b36f43de3e2f8b58d5f539daa6f6d47f25870 (patch) | |
| tree | 0992334be13cec6538a1dea22fbbf26ad6bdf224 /src/GF/Formalism/CFG.hs | |
| parent | fe367412e0aeb4ad5c02de68e6eca382e0f96984 (diff) | |
removed src for 2.9
Diffstat (limited to 'src/GF/Formalism/CFG.hs')
| -rw-r--r-- | src/GF/Formalism/CFG.hs | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/src/GF/Formalism/CFG.hs b/src/GF/Formalism/CFG.hs deleted file mode 100644 index c38adb4e2..000000000 --- a/src/GF/Formalism/CFG.hs +++ /dev/null @@ -1,50 +0,0 @@ ----------------------------------------------------------------------- --- | --- Maintainer : PL --- Stability : (stable) --- Portability : (portable) --- --- > CVS $Date: 2005/04/11 13:52:49 $ --- > CVS $Author: peb $ --- > CVS $Revision: 1.1 $ --- --- CFG formalism ------------------------------------------------------------------------------ - -module GF.Formalism.CFG where - -import GF.Formalism.Utilities -import GF.Infra.Print -import GF.Data.Assoc (accumAssoc) -import GF.Data.SortedList (groupPairs) -import GF.Data.Utilities (mapSnd) - ------------------------------------------------------------- --- type definitions - -type CFGrammar c n t = [CFRule c n t] -data CFRule c n t = CFRule c [Symbol c t] n - deriving (Eq, Ord, Show) - -type CFChart c n t = CFGrammar (Edge c) n t - - ------------------------------------------------------------- --- building syntax charts from grammars - -grammar2chart :: (Ord n, Ord e) => CFGrammar e n t -> SyntaxChart n e -grammar2chart cfchart = accumAssoc groupSyntaxNodes $ - [ (lhs, SNode name (filterCats rhs)) | - CFRule lhs rhs name <- cfchart ] - - ----------------------------------------------------------------------- --- pretty-printing - -instance (Print n, Print c, Print t) => Print (CFRule c n t) where - prt (CFRule cat rhs name) = prt name ++ " : " ++ prt cat ++ - ( if null rhs then "" - else " --> " ++ prtSep " " rhs ) - prtList = prtSep "\n" - - |