Files
bison/examples/c/bistromathic
Akim Demaille ce27796b74 examples: beware of strnlen portability issues
One function missing on Solaris 10 Sparc:

     CCLD     examples/c/bistromathic/bistromathic
    Undefined                       first referenced
    symbol                             in file
    strnlen                             examples/c/bistromathic/bistromathic-parse.o
    ld: fatal: symbol referencing errors. No output written to examples/c/bistromathic/bistromathic

Reported by Dagobert Michelsen.
https://lists.gnu.org/r/bug-bison/2020-05/msg00048.html

* examples/c/bistromathic/parse.y (xstrndup): Don't use strnlen.
xstrndup is assembled from gnulib's xstrndup, strndup and strnlen...
2020-05-04 06:48:00 +02:00
..

bistromathic - all the bells and whistles

This example demonstrates best practices when using Bison.

  • Its hand-written scanner tracks locations.
  • Its interface is pure.
  • It uses the error token to get error recovery.
  • Its interface is "incremental", well suited for interaction: it uses the push-parser API to feed the parser with the incoming tokens.
  • It features an interactive command line with completion based on the parser state, based on yyexpected_tokens.
  • It uses Bison's standard catalogue for internationalization of generated messages.
  • It uses a custom syntax error with location, lookahead correction and token internationalization.
  • It supports debug traces with semantic values.
  • It uses named references instead of the traditional $1, $2, etc.