Founding the newly structured GF2.0 cvs archive.

src/GF/UseGrammar/GetTree.hs

@@ -0,0 +1,46 @@
+module GetTree where
+
+import GFC
+import Values
+import qualified Grammar as G
+import Ident
+import MMacros
+import Macros
+import Rename
+import TypeCheck
+import PGrammar
+import ShellState
+
+import Operations
+
+-- how to form linearizable trees from strings and from terms of different levels
+--
+-- String --> raw Term --> annot, qualif Term --> Tree
+
+string2tree :: StateGrammar -> String -> Tree
+string2tree gr = errVal uTree . string2treeErr gr
+
+string2treeErr :: StateGrammar -> String -> Err Tree
+string2treeErr gr s = do
+  t <- pTerm s
+  let t1 = refreshMetas [] t
+  let t2 = qualifTerm abstr t1
+  annotate grc t2
+ where
+   abstr = absId gr
+   grc = grammar gr
+
+string2Cat, string2Fun :: StateGrammar -> String -> (Ident,Ident)
+string2Cat gr c = (absId gr,identC c)
+string2Fun = string2Cat
+
+strings2Cat, strings2Fun :: String -> (Ident,Ident)
+strings2Cat s = (identC m, identC (drop 1 c)) where (m,c) = span (/= '.') s
+strings2Fun = strings2Cat
+
+string2ref :: StateGrammar -> String -> Err G.Term
+string2ref _ ('x':'_':ds) = return $ freshAsTerm ds --- hack for generated vars
+string2ref gr s = 
+  if elem '.' s 
+    then return $ uncurry G.Q $ strings2Fun s
+    else return $ G.Vr $ identC s