Created
May 28, 2020 08:08
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Enhanced error handling based on new features introduced in Go 1.13
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| package werror | |
| import ( | |
| "fmt" | |
| ) | |
| type Error struct { | |
| Err error // the underlying error | |
| Str string | |
| } | |
| func Wrap(err error) *Error { | |
| return &Error{ | |
| Err: err, | |
| } | |
| } | |
| func (e *Error) SetError(err error) *Error { | |
| e.Str = err.Error() | |
| return e | |
| } | |
| func (e *Error) SetErrorf(format string, a ...interface{}) *Error { | |
| e.Str = fmt.Sprintf(format, a...) | |
| return e | |
| } | |
| // Error implements the error interface. | |
| func (e *Error) Error() string { return e.Str } | |
| // Unwrap follows the Unwrap convention introduced in Go 1.13, | |
| // See https://blog.golang.org/go1.13-errors | |
| func (e *Error) Unwrap() error { return e.Err } |
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