+resource_load_error::resource_load_error(const string &name, const string &err):
+ runtime_error(format("%s: %s", name, err))
+{ }
+
+resource_load_error::resource_load_error(const string &name, const exception &exc):
+ runtime_error(format("%s: %s: %s", name, Debug::demangle(typeid(exc).name()), exc.what()))
+{ }
+
+