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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.
38 lines
809 B
Markdown
38 lines
809 B
Markdown
# AT_BISON_OPTION_PUSHDEFS/AT_BISON_OPTION_POPDEFS
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These two macros must be given the (main) directives so that they
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define a number of other macros to:
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- what the language is (so what compiler tool chain to use, what
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definition of yylex/yyerror, etc.)
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- what skeleton is used
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# Keywords
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The following keywords are used to label tests (with
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AT_KEYWORDS([[category]])). Please follow them and avoid creating
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synonyms.
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- action
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- api.value.type
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- c++: c++ language
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- cex: counterexamples.
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- d: d language
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- deprec: deprecated features.
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- diagnostics
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- glr
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- graph
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- java
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- lac
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- %merge
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- multistart
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- push
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- report: for automaton dumps
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- %union
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- variant
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- yacc: POSIX yacc (%yacc)
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# Calculator
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The grammar features several special directives:
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- `!!` YYERROR
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- `!+` YYACCEPT
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- `!-` YYABORT
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- `!*` YYNOMEM
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