public function __construct()
{
$this->selector = CssSelectorParser::instance();
// Imported rules
$this->ws = $this->selector->ws;
$this->ident = $this->selector->ident;
$this->string = $this->selector->string;
$this->num = $this->selector->num;
$this->dimension = $this->selector->dimension;
$this->positive = $this->selector->positive;
$escape = '\\\\[0-9a-fA-F]{1,6}|\\\\[^0-9a-fA-F\\r\\n]+';
$nonascii = '[^\\0-\\177]';
$this->hash = new Concatenate(new Sequence('#', "([a-zA-Z0-9_-]+|{$escape}|{$nonascii})+"));
$this->numeric = new Concatenate(new Sequence($this->num, new OptionalChoice('%', $this->ident)));
$this->comment = new Ignore(new RegexParser('/\\*.*?\\*/\\s*', 'ms'));
$this->values = new Many($this->comment, $this->string, $this->hash, $this->ident, $this->numeric, ',', new WhitespaceParser(1));
$this->function = new Concatenate(new Sequence($this->ident, '(', $this->positive, $this->values, ')'));
$this->values->prepend($this->function);
$this->declaration = new Closure(new Sequence($this->ident, $this->ws, ':', $this->ws, $this->values, $this->ws, new OptionalChoice('!important')), function ($data) {
return new CssDeclaration($data[0], implode(' ', $data[2]), $data[3] !== null);
});
$this->ruleset = new Closure(new Sequence($this->selector, $this->positive, $this->ws, '{', $this->ws, new RepSep($this->declaration, ';\\s*'), '}', $this->ws), function ($data) {
return new CssRuleSet($data[0], $data[2]);
});
$this->root = new Closure(new Many($this->ruleset, $this->comment), function ($data) {
return new Css($data);
});
}
public function testDoesNotConsumeBlocks()
{
$input = new Input('h1 {}');
$result = $this->parser->parse($input)->data;
$this->assertEquals('Element(h1)', $result->__toString());
$this->assertEquals(' {}', $input->get());
}
public function matches($selector)
{
if (!is_string($selector)) {
throw new \InvalidArgumentException("{$selector} must be a string");
}
// When dealing with selectors describing objects commas should denote a match of any of these things.
foreach (explode(',', $selector) as $part) {
$part = trim($part);
$selector = CssSelectorParser::instance()->parseString($part);
$object = $selector->define();
$object->isRoot = true;
if ($this->matchesObject($object)) {
return true;
}
}
return false;
}
/**
* @param string|CssObject|Selector $selector
* @return CssObject
*
* @throws \LogicException
*/
public static function buildObject($selector)
{
if ($selector instanceof CssObject) {
return $selector;
}
if (is_string($selector)) {
if (!isset(self::$objectCache[$selector])) {
// When dealing with selectors describing objects commas should denote a match of any of these things.
// An object that must match all of its children should do this.
$choices = [];
foreach (explode(',', $selector) as $part) {
$part = trim($part);
$choices[] = CssSelectorParser::instance()->parseString($part);
}
self::$objectCache[$selector] = new AllSelector($choices);
}
$selector = self::$objectCache[$selector];
}
if ($selector instanceof Selector) {
return $selector->define();
}
throw new \LogicException('I dont know how to build an object from ' . get_class($selector));
}