github.com/sagernet/sing@v0.2.6/common/exceptions/cause.go (about)

     1  package exceptions
     2  
     3  type causeError struct {
     4  	message string
     5  	cause   error
     6  }
     7  
     8  func (e *causeError) Error() string {
     9  	if e.cause == nil {
    10  		return e.message
    11  	}
    12  	return e.message + ": " + e.cause.Error()
    13  }
    14  
    15  func (e *causeError) Unwrap() error {
    16  	return e.cause
    17  }