/**
* Visits a directive node
*
* @param DirectiveNode $node The node
* @param VisitorArguments $arguments The arguments
* @return DirectiveNode|null
*/
public function visitDirective(DirectiveNode $node, VisitorArguments $arguments)
{
if ($node->name === '@charset') {
if (!$node->getIsReferenced()) {
return null;
}
// Only output the debug info together with subsequent @charset definitions
// a comment (or @media statement) before the actual @charset directive would
// be considered illegal css as it has to be on the first line
if ($this->charset) {
if ($node->debugInfo) {
$comment = new CommentNode(sprintf("/* %s */\n", str_replace("\n", '', $node->toCSS($this->getContext()))));
$comment->debugInfo = $node->debugInfo;
return $this->visit($comment);
}
return null;
}
$this->charset = true;
}
if (count($node->rules)) {
// it is still true that it is only one ruleset in array
// this is last such moment
$this->mergeRules($node->rules[0]->rules);
$node->accept($this);
$arguments->visitDeeper = false;
// the directive was directly referenced and therefore needs to be shown in the output
if ($node->getIsReferenced()) {
return $node;
}
if (!count($node->rules)) {
return null;
}
// the directive was not directly referenced - we need to check whether some of its children
// was referenced
if ($this->hasVisibleChild($node)) {
// marking as referenced in case the directive is stored inside another directive
$node->markReferenced();
return $node;
}
// The directive was not directly referenced and does not contain anything that
// was referenced. Therefore it must not be shown in output.
return null;
} else {
if (!$node->getIsReferenced()) {
return null;
}
}
return $node;
}
/**
* @covers variable
*/
public function testVariable()
{
// FIXME: implement more!
$d = new DirectiveNode('15', new AnonymousNode('bar'));
$this->assertEquals(null, $d->variable('foo'));
}