[PATCH 00/12] RFC: yyreport_error_message

[Akim Demaille]

Here is my proposal for the first batch of changes to improve the
generation of error messages.  There remains of course much to do:

- the case of push parsers
- parse.error rich and dequoted yytname
- support for translated string aliases
- documentation
- other skeletons (those that don't have LAC support will get
  poor quality results.  GLR might be a challenge.)

Please, comment the design and implementation here.  However, you
might find it easier to read here:
https://github.com/akimd/bison/pull/16.


I would have liked to extract more commits that deal with the test
suite from this thread, but it was too entangled, and I already spent
too much time in git rebase and fixing conflicts.  Sorry about that.

Akim Demaille (12):
  yacc.c: extract yyerror_message_arguments
  yacc.c: store token numbers, not token strings
  yacc.c: style: avoid macros
  yacc.c: add custom error message generation
  yacc.c: check custom error messages
  tests: compute verbose error messages from the custom ones
  yacc.c: isolate yyexpected_tokens
  yacc.c: let custom error messages see the location
  yacc.c: check custom error messages with parse-params
  tests: a clearer test for parse-params
  yacc.c: pass the parse-params to yyreport_syntax_error
  yacc.c: portability to G++ 4.8

 data/skeletons/bison.m4 |   5 +-
 data/skeletons/yacc.c   | 248 ++++++++++++++++++++++++++--------------
 examples/c/calc/calc.y  |  55 ++++++++-
 tests/calc.at           | 192 +++++++++++++++++++------------
 tests/local.at          |  82 ++++++++++---
 tests/testsuite.at      |   2 +-
 6 files changed, 401 insertions(+), 183 deletions(-)

-- 
2.24.1