A disjunction is a set of {@link Expression} instances connected by logical
"and" operators.
public function testToString()
{
$expr1 = new AndX();
$expr2 = new AndX(array(new GreaterThan(10), new EndsWith('.css')));
$expr3 = new AndX(array(new GreaterThan(10), new OrX(array(new Contains('foo'), new EndsWith('.css')))));
$this->assertSame('', $expr1->toString());
$this->assertSame('>10 && endsWith(".css")', $expr2->toString());
$this->assertSame('>10 && (contains("foo") || endsWith(".css"))', $expr3->toString());
}
private function traverseConjunction(AndX $expr)
{
$conjuncts1 = $expr->getConjuncts();
$conjuncts2 = array();
foreach ($conjuncts1 as $conjunct) {
if ($conjunct = $this->traverse($conjunct)) {
$conjuncts2[] = $conjunct;
}
}
if ($conjuncts1 === $conjuncts2) {
return $expr;
}
return $conjuncts2 ? new AndX($conjuncts2) : null;
}
