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* src/reader.c (symbol_list): `guard' and `guard_line' are new members. (symbol_list_new): Adjust. (copy_action): action_line is the first line, not the last. (copy_guard): Just as for actions, store the `action' only, not the switch/case/break flesh. Don't parse the user action that might follow the guard, let... (readgram): do it, i.e., now, there can be an action after a guard. In other words the guard is just explicitly optional. (packgram): Adjust. * src/output.c (guards_output): New. (output_parser): Call it when needed. (output): Also free the guard and attrs obstacks. * src/files.c, src/files.h (obstack_save): Remove. (output_files): Remove. As a result, if one needs the former `.act' file, using an appropriate skeleton which requires actions and guards is now required. * src/main.c (main): Adjust. * tests/semantic.at: New. * tests/regression.at: Use `input.y' as input file name. Avoid 8+3 problems by requiring input.c when the test needs the parser.
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.