public function parse($string)
{
$lastCond = null;
$keywords = array('ifnot', 'if', 'else', 'for', 'loop', '@', '/ifnot', '/if', '/for', '/loop');
foreach (array_keys($this->template->getFunctions()) as $function) {
$keywords[] = $function;
}
$stack = array('children' => array(array('type' => 'string', 'body' => '')));
$stack['children'][0]['parent'] =& $stack;
$current =& $stack['children'][0];
while (!empty($string)) {
$current['body'] .= $this->readUntil('{', $string);
if (!empty($string)) {
$gotKeyword = false;
foreach ($keywords as $keyword) {
$kwLen = strlen($keyword) + 1;
if (substr($string, 0, $kwLen) == '{' . $keyword) {
$gotKeyword = true;
$item = array('type' => $keyword, 'cond' => '', 'children' => '');
$string = substr($string, $kwLen);
$cond = trim($this->readUntil('}', $string));
$item['cond'] = $cond;
$lastCond = $cond;
$string = substr($string, 1);
if (substr($string, 0, 1) == "\n") {
$string = substr($string, 1);
}
if (array_key_exists($keyword, $this->template->getFunctions())) {
$item['function_name'] = $keyword;
$item['type'] = 'function';
}
$str = array('type' => 'string', 'body' => '');
$parent =& $current['parent'];
if (substr($current['body'], 0 - strlen(PHP_EOL)) === PHP_EOL) {
$current['body'] = substr($current['body'], 0, strlen($current['body']) - strlen(PHP_EOL));
}
$item['parent'] =& $parent;
$parent['children'][] = $item;
if ($keyword == '@' || $item['type'] == 'function') {
// If we're processing a variable, add a string to the parent
// and move up to that as current.
$parent['children'][] = $str;
$current =& $parent['children'][count($parent['children']) - 1];
$current['parent'] =& $parent;
} elseif (substr($keyword, 0, 1) == '/') {
// If we're processing the end of a block (if/loop), add a string to the
// parent's parent and move up to that.
$parent =& $parent['parent'];
$parent['children'][] = $str;
$current =& $parent['children'][count($parent['children']) - 1];
$current['parent'] =& $parent;
} else {
$parent['children'][count($parent['children']) - 1]['children'][] = $str;
$current =& $parent['children'][count($parent['children']) - 1]['children'][0];
$current['parent'] =& $parent['children'][count($parent['children']) - 1];
}
break;
}
}
if (!$gotKeyword) {
$current['body'] .= substr($string, 0, 1);
$string = substr($string, 1);
}
}
}
return $this->processStack($stack);
}
