yapp -v myParser.yp

##</code><code>##

1 shift/reduce conflict

##</code><code>##

use MyParser;
  $parser=new MyParser();
  $value=$parser->YYParse(yylex => \&lexer_sub, yyerror => \&error_sub);
  $nberr=$parser->YYNberr();
  $parser->YYData->{DATA}= [ 'a and ( b or c)' ];
  $data=$parser->YYData->{DATA}[0];

##</code><code>##


Syntax error.
Can't locate object method "new" via package "MyParser" (perhaps you forgot to l
oad "MyParser"?) at myparser.pl line 2, <STDIN> line 1.