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//! `Mingling` Example - Async
//!
//! After enabling the `async` feature:
//! 1. The `chain!` macro will support using **async** functions,
//! 2. The `exec` function of `Program` will return a `Future` for you to use with an async runtime
//!
//! ## Enable Feature
//! Enable the `async` feature for mingling in `Cargo.toml`
//! ```toml
//! [dependencies]
//! mingling = { version = "...", features = ["async"] }
//! ```
//!
//! # How to Run
//! ```bash
//! cargo run --manifest-path ./examples/example-async/Cargo.toml -- hello World
//! ```
use mingling::prelude::*;
dispatcher!("hello", HelloCommand => HelloEntry);
// Use Tokio async runtime
#[tokio::main]
async fn main() {
let mut program = ThisProgram::new();
program.with_dispatcher(HelloCommand);
// Run program
program.exec().await;
}
pack!(Hello = String);
// You can freely use async / non-async functions to declare your Chain
#[chain]
// fn parse_name(prev: HelloEntry) -> Next {
async fn parse_name(prev: HelloEntry) -> Next {
let name = prev.first().cloned().unwrap_or_else(|| "World".to_string());
Hello::new(name).to_render()
}
// For renderers, you can still only use synchronous functions
#[renderer]
fn render_hello_who(prev: Hello) {
r_println!("Hello, {}!", *prev);
}
gen_program!();
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