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errors.go
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/
errors.go
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package ishell
// errLevel is the severity of an error.
type errLevel int
const (
warnLevel errLevel = iota + 1
stopLevel
exitLevel
panicLevel
)
type noHandlerError string
func newNoHandlerError() noHandlerError {
return noHandlerError("no handler registered for input")
}
func (e noHandlerError) Error() string {
return string(e)
}
// shellError is an interractive shell error
type shellError struct {
err string
level errLevel
}
func (s shellError) Error() string {
return s.err
}
// WarnErr creates a Warn level error
func WarnErr(err string) error {
return shellError{
err: err,
level: warnLevel,
}
}
// StopErr creates a Stop level error. Shell stops if encountered.
func StopErr(err string) error {
return shellError{
err: err,
level: stopLevel,
}
}
// ExitErr creates a Exit level error. Program terminates if encountered.
func ExitErr(err string) error {
return shellError{
err: err,
level: exitLevel,
}
}
// PanicErr creates a Panic level error. Program panics if encountered.
func PanicErr(err string) error {
return shellError{
err: err,
level: panicLevel,
}
}