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3c5f73fe51
In POSIX Yacc mode, declare yyerror and yylex unless already #defined, or if YYERROR_IS_DECLARED/YYLEX_IS_DECLARED are defined (for consistency with Bison's YYSTYPE_IS_DECLARED/YYLTYPE_IS_DECLARED). See <https://austingroupbugs.net/view.php?id=1388#c5220>. * data/skeletons/c.m4 (b4_function_declare): Resurect. (b4_lex_formals): Since we will possibly expose this prototype in the header, take the prefix into account. * data/skeletons/yacc.c (b4_declare_yyerror_and_yylex): New. (b4_shared_declarations): Use it. * tests/local.at (AT_YACC_IF): New. When in Yacc mode, set the `yacc` Autotest keyword. (AT_YYERROR_DECLARE(c)): Don't declare in Yacc mode, to avoid clashes (since this signature is static). (AT_YYERROR_DEFINE(c)): Don't define as static in Yacc mode. * tests/regression.at (Early token definitions with --yacc): Specify that we are in Yacc mode.
AT_BISON_OPTION_PUSHDEFS/AT_BISON_OPTION_POPDEFS
These two macros must be given the (main) directives so that they define a number of other macros to:
- what the language is (so what compiler tool chain to use, what definition of yylex/yyerror, etc.)
- what skeleton is used
Keywords
The following keywords are used to label tests (with AT_KEYWORDS(category)). Please follow them and avoid creating synonyms.
- action
- api.value.type
- c++: c++ language
- cex: counterexamples.
- d: d language
- deprec: deprecated features.
- diagnostics
- glr
- graph
- java
- lac
- %merge
- multistart
- push
- report: for automaton dumps
- %union
- variant
- yacc: POSIX yacc (%yacc)
Calculator
The grammar features several special directives:
!!YYERROR!+YYACCEPT!-YYABORT!*YYNOMEM