function outputExpression(CSSExpression $e)
{
$out = '';
foreach ($e->getTerms() as $e) {
$out .= $e[0] . $this->outputTerm($e[1]);
}
return $out;
}
function CSSExpression($endtoken)
{
$exprs = new CSSExpression();
$term = $this->CSSTerm();
if (!$term) {
$this->error('Syntax of expression doesn\'t match any allowed term');
}
$exprs->add(NULL, $term);
$safe = 100;
while ($safe--) {
$op = $this->CSSOperator($endtoken);
if ($op == false) {
break;
}
$term = $this->CSSTerm();
if ($term == false) {
break;
}
$exprs->add($op, $term);
}
return $exprs;
}