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# $Id: verbs.fcl,v 1.1.1.1 2004/07/23 19:22:41 tang Exp $
# Recognizes various English verbs in sentences.
# This is based upon example 'ch1-02.l' from "lex & yacc" by John
# R. Levine, Tony Mason, and Doug Brown (by O'Reilly & Associates, ISBN
# 1-56592-000-7). For more information on using lex and yacc, see
# http://www.oreilly.com/catalog/lex/.
%{
#!/usr/bin/tclsh
%}
%%
[\t ]+ # ignore whitespace
is |
am |
are |
were |
was |
be |
being |
been |
do |
does |
did |
will puts "$yytext: is a verb"
[a-zA-Z]+ puts "$yytext: is not a verb"
.|\n ECHO ;# normal default anyway
%%
yylex
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