| // Copyright 2011 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Package errors implements functions to manipulate errors. |
| // |
| // This package implements the Go 2 draft designs for error inspection and printing: |
| // |
| // https://go.googlesource.com/proposal/+/master/design/go2draft.md |
| // |
| // This is an EXPERIMENTAL package, and may change in arbitrary ways without notice. |
| package errors |
| |
| // errorString is a trivial implementation of error. |
| type errorString struct { |
| s string |
| frame Frame |
| } |
| |
| // New returns an error that formats as the given text. |
| // |
| // The returned error embeds a Frame set to the caller's location and implements |
| // Formatter to show this information when printed with details. |
| func New(text string) error { |
| return &errorString{text, Caller(1)} |
| } |
| |
| func (e *errorString) Error() string { |
| return e.s |
| } |
| |
| func (e *errorString) FormatError(p Printer) (next error) { |
| p.Print(e.s) |
| e.frame.Format(p) |
| return nil |
| } |