factored exceptions into non-inner classes

[sbp.git] / TODO

diff --git a/TODO b/TODO
index fd55d0b..1ad1494 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,13 +1,6 @@
 _____________________________________________________________________________
 Immediately
 
-  - Performance
-
-     - Forest: keep() and valid() -- can we do this with states
-       rather than subtrees?
-
-     - hash Long->long: it's all bogus
-
   * pick back up cleaning up end of Parser.java (Reduction)
 
   - [more] sensible tree-printout
@@ -17,9 +10,6 @@ Immediately
   - more natural phrasing of metagrammar?
   - finalize metagrammar and rdp-op's
 
-  - should Union.add() be there?
-  - should Atom.top() be there?
-
   - decent/better error messages
       - fix the location stuff, it's broken
 
@@ -131,3 +121,17 @@ Neat Ideas
 
   - Rekers & Koorn note that GLR Substring Parsing can be used to do
     really elegant and generalized "autocompletion".
+
+
+______________________________________________________________________________
+Ideas for the Future
+
+- Incremental parse table construction
+- "lazy GLR" and "lazy trees" -> language with first-class CF matching
+    - perhaps linear boolean grammars instead? (linear time, quad space)
+- Forest parsing => chained parsers
+- unification parsing, attributes, etc
+- RRP grammars?
+- Take another stab at maximal-match?  Nonterminal not-followed-by is
+  too strong.
+- Error recovery based on substring parsing