* data/bison.simple (yyparse): Do not implement @$ = @1.

[bison.git] / TODO

diff --git a/TODO b/TODO
index a6b677f62edf4fa48476d0677ecf152308c7e7c1..e94652cd35f24d50231813ebc54bf0ca3624d22d 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,6 +1,5 @@
 -*- outline -*-
 
-
 * Several %unions
 I think this is a pleasant (but useless currently) feature, but in the
 future, I want a means to %include other bits of grammars, and _then_
@@ -22,31 +21,6 @@ When implementing multiple-%union support, bare the following in mind:
          char *sval;
        }
 
-* Language independent actions
-
-Currently bison, the generator, transforms $1, $$ and so forth into
-direct C code, manipulating the stacks.  This is problematic, because
-(i) it means that if we want more languages, we need to update the
-generator, and (ii), it forces names everywhere (e.g., the C++
-skeleton would be happy to use other naming schemes, and actually,
-even other accessing schemes).
-
-Therefore we want
-
-1. the generator to replace $1, etc. by M4 macro invocations
-   (b4_dollar(1), b4_at(3), b4_dollar_dollar) etc.
-
-2. the skeletons to define these macros.
-
-But currently the actions are double-quoted, to protect them from M4
-evaluation.  So we need to:
-
-3. stop quoting them
-
-4. change the [ and ] in the actions into @<:@ and @:>@
-
-5. extend the postprocessor to maps these back onto [ and ].
-
 * Coding system independence
 Paul notes:
 
@@ -215,7 +189,6 @@ Show reductions.    []
 ** %no-lines           [ok]
 ** %no-parser          []
 ** %pure-parser                []
-** %semantic-parser    []
 ** %token-table                []
 ** Options which could use parse_dquoted_param ().
 Maybe transfered in lex.c.