/**
* Constructor
*
* @param string $markup
* @param array $tokens
* @param FileSystem $fileSystem
*
* @throws \Liquid\LiquidException
*/
public function __construct($markup, array &$tokens, FileSystem $fileSystem = null)
{
$syntaxRegexp = new Regexp('/(\\w+)\\s*=\\s*(' . Liquid::get('QUOTED_FRAGMENT') . '+)/');
$filterSeperatorRegexp = new Regexp('/' . Liquid::get('FILTER_SEPARATOR') . '\\s*(.*)/');
$filterSplitRegexp = new Regexp('/' . Liquid::get('FILTER_SEPARATOR') . '/');
$filterNameRegexp = new Regexp('/\\s*(\\w+)/');
$filterArgumentRegexp = new Regexp('/(?:' . Liquid::get('FILTER_ARGUMENT_SEPARATOR') . '|' . Liquid::get('ARGUMENT_SEPARATOR') . ')\\s*(' . Liquid::get('QUOTED_FRAGMENT') . ')/');
$this->filters = array();
if ($filterSeperatorRegexp->match($markup)) {
$filters = $filterSplitRegexp->split($filterSeperatorRegexp->matches[1]);
foreach ($filters as $filter) {
$filterNameRegexp->match($filter);
$filtername = $filterNameRegexp->matches[1];
$filterArgumentRegexp->matchAll($filter);
$matches = Liquid::arrayFlatten($filterArgumentRegexp->matches[1]);
array_push($this->filters, array($filtername, $matches));
}
}
if ($syntaxRegexp->match($markup)) {
$this->to = $syntaxRegexp->matches[1];
$this->from = $syntaxRegexp->matches[2];
} else {
throw new LiquidException("Syntax Error in 'assign' - Valid syntax: assign [var] = [source]");
}
}
