Struct gumdrop::Error

pub struct Error { /* fields omitted */ }

Represents an error encountered during argument parsing

Methods

impl Error

fn failed_parse(opt: Opt, err: String) -> Error

Returns an error for a failed attempt at parsing an option value.

fn insufficient_arguments(opt: Opt, expected: usize, found: usize) -> Error

Returns an error for an option expecting two or more arguments not receiving the expected number of arguments.

fn unexpected_argument(opt: Opt) -> Error

Returns an error for an option receiving an unexpected argument value, e.g. --option=value.

fn unexpected_single_argument(opt: Opt, n: usize) -> Error

Returns an error for an option expecting two or more argument values receiving only one in the long form, e.g. --option=value.

These options must be passed as, e.g. --option value second-value [...].

fn missing_argument(opt: Opt) -> Error

Returns an error for a missing required argument.

fn missing_command() -> Error

Returns an error for a missing command name.

fn unexpected_free(arg: &str) -> Error

Returns an error when a free argument was encountered, but the options type does not support free arguments.

fn unrecognized_command(name: &str) -> Error

Returns an error for an unrecognized command.

fn unrecognized_option(opt: Opt) -> Error

Returns an error for an unrecognized option.

fn unrecognized_long(opt: &str) -> Error

Returns an error for an unrecognized long option, e.g. --option.

fn unrecognized_short(opt: char) -> Error

Returns an error for an unrecognized short option, e.g. -o.

Trait Implementations

impl Debug for Error

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl StdError for Error

fn description(&self) -> &str

A short description of the error.

fn cause(&self) -> Option<&Error>

The lower-level cause of this error, if any.