Trait AddCommandExt 

pub trait AddCommandExt {
    // Required methods
    fn add_command<T>(&mut self) -> &mut Self
       where T: Command + 'static;
    fn has_command<T>(&self) -> bool
       where T: Command + 'static;
}

Extension trait for AppBuilder to add command registration methods.

This trait provides convenient methods for registering commands with the application builder. Commands registered this way will be available in the CLI interface when the application is run.

Required Methods

fn add_command<T>(&mut self) -> &mut Self

where T: Command + 'static,

Registers a command with the application builder.

The command will be available as a subcommand in the CLI interface. If this is the first command being added, a CommandRegistry will be automatically created and added to the application.

Type Parameters

• T - The command type to register. Must implement Command + 'static.

Returns

Returns &mut Self for method chaining.

Examples

use diode::{App, AppBuilder};
use diode_base::{Command, AddCommandExt};
use clap::Command as ClapCommand;
use std::process::ExitCode;
use std::sync::Arc;

struct MyCommand;
impl Command for MyCommand {
    fn command() -> ClapCommand { ClapCommand::new("my-cmd") }
}

let app = App::builder()
    .add_command::<MyCommand>()
    .build()
    .await?;

fn has_command<T>(&self) -> bool

where T: Command + 'static,

Checks if a command type has been registered.

Type Parameters

• T - The command type to check for.

Returns

Returns true if the command is registered, false otherwise.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl AddCommandExt for AppBuilder

fn add_command<T>(&mut self) -> &mut Self

where T: Command + 'static,

fn has_command<T>(&self) -> bool

where T: Command + 'static,

Implementors