package bbgo import ( "fmt" "reflect" "github.com/sirupsen/logrus" ) func isSymbolBasedStrategy(rs reflect.Value) (string, bool) { field := rs.FieldByName("Symbol") if !field.IsValid() { return "", false } if field.Kind() != reflect.String { return "", false } return field.String(), true } func hasField(rs reflect.Value, fieldName string) (field reflect.Value, ok bool) { field = rs.FieldByName(fieldName) return field, field.IsValid() } func injectField(rs reflect.Value, fieldName string, obj interface{}, pointerOnly bool) error { field := rs.FieldByName(fieldName) if !field.IsValid() { return nil } logrus.Infof("found %s in %s, injecting %T...", fieldName, rs.Type(), obj) if !field.CanSet() { return fmt.Errorf("field %s of %s can not be set", fieldName, rs.Type()) } rv := reflect.ValueOf(obj) if field.Kind() == reflect.Ptr { if field.Type() != rv.Type() { return fmt.Errorf("field type mismatches: %s != %s", field.Type(), rv.Type()) } field.Set(rv) } else if field.Kind() == reflect.Interface { field.Set(rv) } else { // set as value if pointerOnly { return fmt.Errorf("field %s %s does not allow value assignment (pointer type only)", field.Type(), rv.Type()) } field.Set(rv.Elem()) } return nil }