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package flags
// ErrorType represents the type of error.
type ErrorType uint
const (
// Unknown or generic error
ErrUnknown ErrorType = iota
// Expected an argument but got none
ErrExpectedArgument
// Unknown flag
ErrUnknownFlag
// Unknown group
ErrUnknownGroup
// Failed to marshal value
ErrMarshal
// The error contains the builtin help message
ErrHelp
// An argument for a boolean value was specified
ErrNoArgumentForBool
// A required flag was not specified
ErrRequired
)
// Error represents a parser error. The error returned from Parse is of this
// type. The error contains both a Type and Message.
type Error struct {
// The type of error
Type ErrorType
// The error message
Message string
}
// Get the errors error message.
func (e *Error) Error() string {
return e.Message
}
func newError(tp ErrorType, message string) *Error {
return &Error{
Type: tp,
Message: message,
}
}
func wrapError(err error) error {
if _, ok := err.(*Error); !ok {
return newError(ErrUnknown, err.Error())
}
return err
}
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