checkpoint

[sbp.git] / TODO

diff --git a/TODO b/TODO
index fd55d0b..fb89b52 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,28 +1,16 @@
 _____________________________________________________________________________
 Immediately
 
-  - Performance
+  - clean up the whole Walk situation (?)
 
-     - 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)
+  - decent/better error messages
+      - fix the location stuff, it's broken
 
-  - [more] sensible tree-printout
 
-  - revamp Tib.Block (do it all in the parser using indent/dedent?)
+______________________________________________________________________________
+v1.1
 
-  - 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
-
   - write some grammars
       - Java grammar
       - TeX (math?)
@@ -33,10 +21,13 @@ Immediately
 ______________________________________________________________________________
 Soon
 
-  - substring parsing for better error messages
+  - serialization of parse tables
 
-  - clean up the whole Walk situation
+  - "ambiguity modulo dropped fragments"?
+       - can this be checked statically?
+       - eliminated statically?
 
+  - substring parsing for better error messages
   - "lift" cases:
       - right now I can only lift the last child in a forest...  begs
         the question of what the right representation for Forests is
@@ -46,12 +37,9 @@ Soon
   - "Regular Right Part" grammars (NP Chapman, etc)
   - Attribute unification
 
-  - serialization of parse tables
   - inference of rejections for literals
   - "prefer whitespace higher up" (?)
-  - "ambiguity modulo dropped fragments"?
-       - can this be checked statically?
-       - eliminated statically?
+
 
 ______________________________________________________________________________
 Later
@@ -131,3 +119,17 @@ 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