polish the PGF API and make Expr and Type abstract types. Tree is a type synonym of Expr

2009-09-11 13:45:34 +00:00
parent 28a7c4b5c7
commit 1cdf171251
31 changed files with 205 additions and 159 deletions
@@ -16,7 +16,6 @@ module PGF.Paraphrase (
 import PGF.Data
 import PGF.Tree
 import PGF.Macros (lookDef,isData)
-import PGF.Expr
 import PGF.CId

 import Data.List (nub,sort,group)