| // Copyright 2019 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // TODO: Remove entire file when support for Go1.12 and lower has been dropped. |
| //go:build !go1.13 |
| // +build !go1.13 |
| |
| package spanner |
| |
| import "golang.org/x/xerrors" |
| |
| // unwrap is a generic implementation of (errors|xerrors).Unwrap(error). This |
| // implementation uses xerrors and is included in Go 1.12 and earlier builds. |
| func unwrap(err error) error { |
| return xerrors.Unwrap(err) |
| } |
| |
| // errorAs is a generic implementation of |
| // (errors|xerrors).As(error, interface{}). This implementation uses xerrors |
| // and is included in Go 1.12 and earlier builds. |
| func errorAs(err error, target interface{}) bool { |
| return xerrors.As(err, target) |
| } |