+bool GetChangePolicy(const char ** attr, T & value, const std::string & attrName)
+{
+if (!CheckValue(attr, attrName))
+ return false;
+std::string type(attr[1]);
+switch (type)
+ {
+ case "allow":
+ value = TARIFF::ALLOW;
+ break;
+ case "to_cheap":
+ value = TARIFF::TO_CHEAP;
+ break;
+ case "to_expensive":
+ value = TARIFF::TO_EXPENSIVE;
+ break;
+ case "deny":
+ value = TARIFF::DENY;
+ break;
+ default:
+ return false;
+ }
+return true;
+}
+