| 1 | package e |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "runtime/debug" |
| 6 | ) |
| 7 | |
| 8 | // TypeErr returns an error with a string that explains what error was expected and what was received. |
| 9 | func TypeErr(expected, actual any) error { |
| 10 | return fmt.Errorf("expected type %T, got %T", expected, actual) |
| 11 | } |
| 12 | |
| 13 | // compile time type check that HandlerError is an error |
| 14 | var _ error = New(nil) |
| 15 | |
| 16 | // HandlerError adds a stack trace to an error |
| 17 | type HandlerError struct { |
| 18 | Err error |
| 19 | Stack []byte |
| 20 | } |
| 21 | |
| 22 | // Error makes HandlerError implement error |
| 23 | func (err HandlerError) Error() string { |
| 24 | return fmt.Sprintf("%s in:\n%s", err.Err.Error(), err.Stack) |
| 25 | } |
| 26 | |
| 27 | // New returns a new HandlerError |
| 28 | func New(err error) HandlerError { |
| 29 | return HandlerError{Err: err, Stack: debug.Stack()} |
| 30 | } |