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New. * data/yacc.m4 (b4_pure_args, b4_Pure_args): New. (b4_parse_param): Remove. Use b4_identification. Propagate b4_pure_args where needed to pass them to yyerror. * data/glr.m4 (b4_parse_param): Remove. (b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args) (b4_lpure_formals): New. Use b4_identification. (YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by b4_user_formals and b4_user_args. (yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer) (yyreportAmbiguity): When using a pure parser, also need the location, and the parse-params. Adjust callers. (yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError): When using a pure parser, also need the parse-params. Adjust callers. * tests/calc.at: Test pure (%pure-parser) and absolutely pure (%pure-parser + %parse-param) LALR and GLR parsers. (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF, AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF, AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF. (_AT_DATA_CALC_Y): Equip for purity of yyerror. (_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF. * tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity. * doc/bison.texinfo: Untabify the whole file. (Parser Function): Document %parse-param, deprecate YYPARSE_PARAM. (Pure Calling): Document %lex-param, deprecate YYLEX_PARAM. (Error Reporting): Adjust to these new directives. Document %error-verbose, deprecate YYERROR_VERBOSE.
This directory contains the Bison parser generator. See the file INSTALL for compilation and installation instructions. See the file doc/FAQ for frequently asked questions. It was once true that, when installing Bison on Sequent (or Pyramid?) systems, you had to be in the Berkeley universe. This may no longer be true; we have no way to tell. On VMS, you will probably have to create Makefile from Makefile.in by hand. Remember to do `SET COMMAND BISON' to install the data in `BISON.CLD'. VMS and MS-DOS builds are probably broken right now. If you are able to build Bison on either platform and you need to make changes to do so, please submit those changes as a bug report. Send bug reports to bug-bison@gnu.org. Please include the version number from `bison --version', and a complete, self-contained test case in each bug report. If you have questions about using Bison which the documentation does not answer, send mail to help-bison@gnu.org.