Enum DispatchError

pub enum DispatchError {
    ActionCommand {
        command_name: String,
        source: Box<dyn Error>,
    },
    SubcommandNotInMap {
        command_name: String,
        all_commands: Vec<&'static str>,
    },
    NoSubcommand,
}

Error generated by CommandMap::dispatch.

Variants

ActionCommand

An error originating from the execution of the ActionCommand itself - an error in the business logic.

Fields

command_name: String

source: Box<dyn Error>

SubcommandNotInMap

The CommandMap does not have an associated ActionCommand named the same thing as the clap::ArgMatches matched command. This may happen if additional clap::Commands have been added beyond those present in the CommandMap.

Fields

command_name: String

all_commands: Vec<&'static str>

NoSubcommand

The clap::ArgMatches does not have a subcommand, which means that the clap::Command which matched this clap::ArgMatches is the most specific. For example, if my-program has a hello-world subcommand, but the CommandMap returns DispatchError::NoSubcommand, it means that the program was invoked as my-program with no subcommand at all.

Trait Implementations

impl Debug for DispatchError

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

Formats the value using the given formatter.

impl Display for DispatchError

fn fmt(&self, __snafu_display_formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for DispatchError

where Self: Debug + Display,

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

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

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl ErrorCompat for DispatchError

fn backtrace(&self) -> Option<&Backtrace>

Returns a Backtrace that may be printed.

fn iter_chain(&self) -> ChainCompat<'_>

where Self: AsErrorSource,

Returns an iterator for traversing the chain of errors, starting with the current error and continuing with recursive calls to Error::source.