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| author | aarne <aarne@cs.chalmers.se> | 2008-05-21 09:26:44 +0000 |
|---|---|---|
| committer | aarne <aarne@cs.chalmers.se> | 2008-05-21 09:26:44 +0000 |
| commit | 055c0d0d5a5bb0dc75904fe53df7f2e4f5732a8f (patch) | |
| tree | 0e63fb68c69c8f6ad0f78893c63420f0a3600e1c /src-2.9/GF/Formalism/CFG.hs | |
| parent | 915a1de71783ab8446b1af9e72c7ba7dfbc12d3f (diff) | |
GF/src is now for 2.9, and the new sources are in src-3.0 - keep it this way until the release of GF 3
Diffstat (limited to 'src-2.9/GF/Formalism/CFG.hs')
| -rw-r--r-- | src-2.9/GF/Formalism/CFG.hs | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/src-2.9/GF/Formalism/CFG.hs b/src-2.9/GF/Formalism/CFG.hs deleted file mode 100644 index c38adb4e2..000000000 --- a/src-2.9/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" - - |