public static function resolveExpression($expression)
{
$expression = trim($expression);
$matched_subexpression = array();
if (preg_match('/^\\{\\$([^\\}]+)\\}$/', $expression, $matched_subexpression)) {
$subexpression = trim($matched_subexpression[1]);
$matched_subexpression_components = array();
if (preg_match('/^([^\\.]+)\\.(.+)$/', $subexpression, $matched_subexpression_components)) {
$scope_name = $matched_subexpression_components[1];
$attribute = $matched_subexpression_components[2];
$return_value = new __FlowAttribute();
$scope = self::resolveScope($scope_name);
$return_value->setScope($scope);
$return_value->setAttribute($attribute);
}
} else {
$return_value = $expression;
}
return $return_value;
}
protected function _parseAttribute(__ConfigurationSection &$flow_section)
{
$attribute = new __FlowAttribute();
if ($flow_section->hasAttribute('attribute') && $flow_section->hasAttribute('scope')) {
$flow_attribute = new __FlowAttribute();
$flow_attribute->setAttribute($flow_section->getAttribute('attribute'));
$scope = __WebflowExpressionHelper::resolveScope($flow_section->getAttribute('scope'));
$flow_attribute->setScope($scope);
$attribute->setAttribute($flow_attribute);
}
if ($flow_section->hasAttribute('value')) {
$value = __WebflowExpressionHelper::resolveExpression($flow_section->getAttribute('value'));
$attribute->setValue($value);
}
return $attribute;
}