Function Wrap

errors.go:184–196

Wrap returns an error annotating err with a stack trace at the point Wrap is called, and the supplied message. If err is nil, Wrap returns nil.

(err error, message string)

// at the point Wrap is called, and the supplied message.
// If err is nil, Wrap returns nil.
func Wrap(err error, message string) error {
	if err == nil {
		return nil
	}
	err = &withMessage{
		cause: err,
		msg:   message,
	}
	return &withStack{
		err,
		callers(),
	}
}

// Wrapf returns an error annotating err with a stack trace
// at the point Wrapf is called, and the format specifier.