composure_macros

The macros behind Composure: write a Discord command as a function, a message as markup.

Don't depend on this crate directly: enable composure's macros feature, which re-exports everything here.
cargo add composure --features macros

use composure::{app, command, rsx, view, command::View};

/// Repeat some text
#[command]
fn echo(#[option("What to say", max_len = 200)] text: &str) -> String {
    text.to_string()
}

/// A button that counts its clicks, no database required
#[view]
pub fn Counter(count: u32) -> View {
    rsx! {
        <Text>"Clicked " {count} " times"</Text>
        <Row>
            <Button primary on:click:add=move |_| Counter { count: count + 1 }>"+1"</Button>
        </Row>
    }
}

#[app(handlers(echo, Counter))]
pub struct Bot;

Macro	What it gives you
`#[command]`	A slash or context-menu command from a function: Options from its typed parameters, the description from its doc comment
`#[group]`	Subcommands: `/mod ban`, `/mod kick`
`#[autocomplete]`	Suggestions while the user types
`#[derive(Choice)]`	An enum as a fixed set of choices
`#[component]`, `#[modal]`	Handlers for buttons, selects and modal submits, with state carried in the `custom_id`
`#[derive(Modal)]`	A form whose submit arrives as your struct
`rsx!`	JSX-like markup for Components V2 messages and modals
`#[view]`	A reusable layout with inline event handlers
`#[app]`	Collects everything into the handler an Adapter serves

Mistakes are caught at compile time with errors that say what to do: a missing description, an Option bound outside its type, two commands with the same name, a button in the wrong place, a modal input without a matching parameter.

Learn them in the guide; every rsx! tag and attribute is in the Views reference.

License

Licensed under the Apache License, Version 2.0.

composure_macros 0.2.0

composure_macros

License