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all: don't emit an error message when the scanner returns YYERRCODE

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I'm quite pleased to see that the tricky case of glr.c was already
prepared by the changes to support syntax_error exceptions.  Better
yet, it is actually syntax_error that becomes a special case of the
general pattern: make yytoken be YYERRCODE.

* data/skeletons/glr.c (YYFAULTYTOK): Remove the now useless (Basil)
Faulty token.
Instead, use the error token.
* data/skeletons/lalr1.d, data/skeletons/lalr1.java: When computing
the action, first check the case of the error token.

* tests/calc.at: Check cases for the error token symbols before and
after it.
This commit is contained in:
Akim Demaille
2020-04-26 14:48:59 +02:00
parent 58e79539fc
commit b254b36db8
6 changed files with 121 additions and 76 deletions
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2
data/skeletons/glr.cc
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@@ -344,6 +344,8 @@ b4_percent_define_flag_if([[global_tokens_and_yystype]],
#define ]b4_symbol(-2, [id])[ ]b4_namespace_ref[::]b4_parser_class[::token::]b4_symbol(-2, [id])[
#undef ]b4_symbol(0, [id])[
#define ]b4_symbol(0, [id])[ ]b4_namespace_ref[::]b4_parser_class[::token::]b4_symbol(0, [id])[
#undef ]b4_symbol(1, [id])[
#define ]b4_symbol(1, [id])[ ]b4_namespace_ref[::]b4_parser_class[::token::]b4_symbol(1, [id])[
#ifndef ]b4_api_PREFIX[STYPE
# define ]b4_api_PREFIX[STYPE ]b4_namespace_ref[::]b4_parser_class[::semantic_type