Struct Launcher 

pub struct Launcher<G: Command> { /* private fields */ }

Launcher before any subcommand has been registered.

Calling Launcher::command transitions to LauncherWithSubs.

Implementations

impl<G: Command + 'static> Launcher<G>

pub fn of() -> Self

pub fn command<S>(self, name: &str) -> LauncherWithSubs<G>

where S: Command + SubCommandOf<G> + 'static,

Register the first subcommand, moving into subcommand mode.

pub fn command_with_description<S>( self, name: &str, description: &str, ) -> LauncherWithSubs<G>

where S: Command + SubCommandOf<G> + 'static,

Like Launcher::command but with a description override.

pub fn parse(&self, args: &[String]) -> Result<G>

Parse args into a G without running.

pub fn execute(self) -> !

where G: Runnable,

Parse std::env::args(), run G::run, and exit. Parse-origin failures (including those from G::from_parsed, e.g. missing required args, invalid typed values) route through the help printer with exit code 2. Runtime failures from G::run exit with code 1 and no help banner.