X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=TODO;h=f3b6476162e3bb3715b1cf0a1bacdb1cd7c9e87a;hp=fd55d0bac1fccf1994c5540ab188f4b6e2caa203;hb=f1dba2b015c3da04fc2fab45604da2e6c9ae0a1d;hpb=03dd839af8e8d1a6c2f69c5410da6d19fbbe3931 diff --git a/TODO b/TODO index fd55d0b..f3b6476 100644 --- a/TODO +++ b/TODO @@ -1,57 +1,52 @@ _____________________________________________________________________________ Immediately - - Performance + - do Forest/Tree still need a Region? + - the unwrap bit in Forest makes it really hard to expose an API for forests - - Forest: keep() and valid() -- can we do this with states - rather than subtrees? + - evil problems with (x y? z /ws) + - ParseFailed, GSS, Walk, Parser, Sequence, Forest + - copyright notices + - documentation - - hash Long->long: it's all bogus + - grammar highlighting? + - comment indentation vs block indentation? + - { and } in
+ - recursive { { foo } } - * pick back up cleaning up end of Parser.java (Reduction) - - - [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?) - URL (RFC) - RFC2822 (email message/headers) + - clean up the whole Walk situation (?) ______________________________________________________________________________ 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? - - "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 - if we need to be able to do lift operations on it. + - substring parsing for better error messages - Parameterized LR - "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? + + - Labeled edges on trees (associate a label with each slot in the + child array in Forest.Body? might make equality tough) -- + equivalent to Feature Structures. Colon-labeling. ______________________________________________________________________________ Later @@ -131,3 +126,17 @@ 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