Tag - yacc

Reentrant scanner and parser with Aflex and Ayacc

By Stephane Carrez

Version 1.6 of Aflex, the lexical analyzer, and version 1.4 of Ayacc, the Ada parser generator provide numerous improvements to customize the generated scanner and parser. The major change is the support to write a reentrant scanner and parser. Let's have a look at it.

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Aflex 1.5 and Ayacc 1.3.0

By Stephane Carrez

Aflex is a lexical analyzer generating tool similar to the Unix tool lex (1). Ayacc is an Ada parser generator in the style of yacc (1). New releases are available for these two tools and they bring a number of small improvements to these tools written in Ada 83 in the 1990s by John Self, David Taback and Deepak Tolani at the University of California, Irvine.

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