Trait bash_builtins::Builtin

pub trait Builtin {
    // Required method
    fn call(&mut self, args: &mut Args) -> Result<()>;
}

The Builtin trait contains the implementation for a bash builtin.

Required Methods

fn call(&mut self, args: &mut Args) -> Result<()>

Method invoked when the builtin is typed in the prompt.

It returns an instance of Result. The value Ok(()) returns the exit code 0 to the shell. Error::ExitCode can be used to return a specific exit code.

Any error type that implements std::error::Error can be used with the ? operator to return an error from this method.

Command-line arguments are read from the Args instance.

Implementors