1// Copyright 2019 Google LLC 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15// TODO: Remove entire file when support for Go1.12 and lower has been dropped. 16// +build go1.13 17 18package spanner 19 20import "errors" 21 22// unwrap is a generic implementation of (errors|xerrors).Unwrap(error). This 23// implementation uses errors and is included in Go 1.13 and later builds. 24func unwrap(err error) error { 25 return errors.Unwrap(err) 26} 27 28// errorAs is a generic implementation of 29// (errors|xerrors).As(error, interface{}). This implementation uses errors and 30// is included in Go 1.13 and later builds. 31func errorAs(err error, target interface{}) bool { 32 return errors.As(err, target) 33} 34