1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// Copyright 2019 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 xerrors_test
import (
"fmt"
"golang.org/x/xerrors"
)
type MyError2 struct {
Message string
frame xerrors.Frame
}
func (m *MyError2) Error() string {
return m.Message
}
func (m *MyError2) Format(f fmt.State, c rune) { // implements fmt.Formatter
xerrors.FormatError(m, f, c)
}
func (m *MyError2) FormatError(p xerrors.Printer) error { // implements xerrors.Formatter
p.Print(m.Message)
if p.Detail() {
m.frame.Format(p)
}
return nil
}
func ExampleFormatError() {
err := &MyError2{Message: "oops", frame: xerrors.Caller(1)}
fmt.Printf("%v\n", err)
fmt.Println()
fmt.Printf("%+v\n", err)
}
|
