X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f29f8af3edf5b678f812e36ea4416983467e9189..534497f54ba955ba2173ecb9eb8128b45c745b62:/TODO diff --git a/TODO b/TODO index d2e457c9..09fce089 100644 --- a/TODO +++ b/TODO @@ -1,27 +1,4 @@ * Short term -** Laxism in Bison invocation arguments: -The flag_argmatch functions were meant to be generic. The introduction of --Werror= in generic code is a bit troublesome, and generates weird -behaviour. Because seeing "error=" causes Bison to match the subsequent -categories with a generic procedure, but on a very specific variable, the -following commands are legal, and equivalent: - -$ bison -Werror=yacc # OK -$ bison --warnings=error=yacc # err, looks very weird? -$ bison -rerror=itemsets # this value of 'report' enum has a value - # of '1 << 1', just like Wyacc -$ bison --report=error=itemsets # (same) -$ bison -ferror=caret # (same) -$ bison --feature=error=caret # (same) - -Basically, writing -rerror={THINGS} or -ferror={FEATURE} is not prohibited, -and results in UB. - -I don't think there is any reason for the user to expect anything out of -these options (this implementation-driven behavior is not documented of -course, as it isn't exactly a feature), so this bug isn't critical but -should be addressed some day nonetheless. - ** Graphviz display code thoughts The code for the --graph option is over two files: print_graph, and graphviz. This is because Bison used to also produce VCG graphs, but since @@ -199,13 +176,13 @@ part of $default. Should we make the two reductions explicit, or just keep $default? See the following point. ** Disabled Reductions -See `tests/conflicts.at (Defaulted Conflicted Reduction)', and decide +See 'tests/conflicts.at (Defaulted Conflicted Reduction)', and decide what we want to do. ** Documentation Extend with error productions. The hard part will probably be finding the right rule so that a single state does not exhibit too many yet -undocumented ``features''. Maybe an empty action ought to be +undocumented ''features''. Maybe an empty action ought to be presented too. Shall we try to make a single grammar with all these features, or should we have several very small grammars? @@ -266,9 +243,9 @@ into exp: exp '+' exp | exp '&' exp; when there are no actions. This can significantly speed up some -grammars. I can't find the papers. In particular the book `LR +grammars. I can't find the papers. In particular the book 'LR parsing: Theory and Practice' is impossible to find, but according to -`Parsing Techniques: a Practical Guide', it includes information about +'Parsing Techniques: a Practical Guide', it includes information about this issue. Does anybody have it?