One Hat Cyber Team

Your IP : 3.147.55.1

Server IP : 103.133.214.160

Server : Linux venus.ewebguru.net 4.18.0-553.30.1.el8_10.x86_64 #1 SMP Tue Nov 26 02:30:26 EST 2024 x86_64

Server Software : Apache/2

PHP Version : 8.1.30

Buat File | Buat Folder

Dir : ~/usr/share/doc/perl-Parse-RecDescent/demo/

View File Name : demo_logic.pl

#!/usr/bin/perl -sw

# PARSE LOGICAL EXPRESSIONS

$RD::TRACE=1;

use Parse::RecDescent;

$grammar =
q{
	expr	:	disj  no_garbage

	no_garbage: /^\s*$/
		  | <error: Trailing garbage>

	disj	:	conj  ('or' conj)(s?)

	conj	:	unary ('and' unary)(s?)

	unary	:	'not' atom
		|	'(' disj ( ')' | <error> )
		|	atom

	atom	:	/<.+?>/

};

$parse = new Parse::RecDescent ($grammar);

$input = '';

print "> ";
while (<>)
{

	if (/^\.$/) { defined $parse->expr($input) or print "huh?\n"; $input = '' }
	else	    { chomp; $input .= " $_" }
	print "> ";
}