* data/skeletons/bison.m4 (b4_symbol_token_kind): Give a definition to
$undefined.
(b4_token_visible_if): $undefined has an id.
* src/output.c (prepare_symbol_definitions): Stop lying: $undefined
_is_ a token.
* tests/input.at: Adjust.
There are people out there that do use YYERRCODE (the token kind of
the error token). See for instance
3812012bb7/unixODBC-2.3.2/Drivers/nn/yylex.c.
Currently, YYERRCODE is defined by yacc.c in an adhoc way as a #define
in the *.c file only. It belongs with the other token kinds.
YYERRCODE is not a nice name, it does not fit in our naming scheme.
YYERROR would be more logical, but it collides with the YYERROR macro.
Shall we keep the same name in all the skeletons? Besides, to avoid
collisions in C, we need to apply the api prefix: YYERRCODE is
actually <PREFIX>ERRCODE. This is not needed in the other languages.
* data/skeletons/bison.m4 (b4_symbol_token_kind): New.
Map the error token to "YYERRCODE".
* data/skeletons/yacc.c (YYERRCODE): Don't define it, it's handled by...
* src/output.c (prepare_symbol_definitions): this.
* tests/input.at (Redefining the error token): Check it.
Address compiler warnings such as
warning: declaration of 'yyla' shadows a member of 'yy::parser::context' [-Wshadow]
* data/skeletons/lalr1.cc (context): Don't use the same names for
variables and members.
Use foo_ for private members, as in parser.
Also, use the + trick in array accesses to please ICC and provide it
with an int.
The name fixed-output-files is pretty clear: generate y.tab.c, as Yacc
does. So let's detach this from %yacc which does more: it requires
POSIX Yacc behavior.
This directive is obsolete since December 29th 2001
8c9a50bee1. It does not show in the
doc. I don't want to spend more time on improving its diagnostics, it
could be removed just as well as far as I'm concerned.
* src/scan-gram.l, src/parse-gram.y (%fixed-output-files): Detach from
%yacc.
* src/parse-gram.y: Use the location of the whole definition to record
the location of a %define variable, instead of just the name of the
variable.
Adjust tests.
