public function __construct($namespace, $elem, $parent)
{
if (array_key_exists('value', $elem[ZXml::TAG_ATTRIBUTES_KEY])) {
$this->valueBind = ZExpression::unpackExpression($elem[ZXml::TAG_ATTRIBUTES_KEY]['value']);
}
parent::__construct($namespace, $elem, $parent);
}
public static function parse($expr, $context = null)
{
$expr = trim($expr);
if (empty($expr) || !is_string($expr)) {
return false;
}
preg_match(self::METHOD_EXPRESSION_PATTERN, $expr, $matches);
if (empty($matches)) {
return false;
}
$object = $matches[1];
$method = $matches[2];
$paramString = trim($matches[3]);
$str = strlen($paramString);
if (strlen($str) > 0) {
$params = ZExpression::parseList($paramString, $context, true);
} else {
$params = array();
}
return new ZMethodExpression($object, $method, $params, $context);
}
protected function evaluateZX($oldvalue)
{
$value = $oldvalue;
if (($expr = ZExpression::parse($value, $this)) !== false) {
try {
$value = $expr->getValue();
// its just a nested ZX
if ($oldvalue != $expr->fullExpression) {
$value = str_replace($expr->fullExpression, $value, $oldvalue);
}
} catch (ZExpressionException $e) {
throw new ZException("Failed to evaluate ZX in {$this->fullName}. ZX: {$expr->expression}", 201, $e);
}
}
return $value;
}