Function module

src/bindings/input/modflags.rs:48–91

(
	ctx: lua::Context<'gc>,
	comp: Rc<RefCell<StrataComp>>,
)

}

pub fn module<'gc>(
	ctx: lua::Context<'gc>,
	comp: Rc<RefCell<StrataComp>>,
) -> anyhow::Result<lua::Value<'gc>> {
	let meta = lua::Table::new(&ctx);

	meta.set(
		ctx,
		lua::MetaMethod::Index,
		lua::Callback::from_fn(&ctx, |ctx, _, mut stack| {
			let _ = stack.pop_front();

			let k = stack.consume::<lua::String>(ctx)?;
			let k = k.to_str()?;
			let bits =
				ModFlags::from_name(k).ok_or_else(|| anyhow::anyhow!("invalid Mod key: {}", k))?;
			let bits = lua::UserData::new_static(&ctx, bits);

			let bits_meta = lua::Table::new(&ctx);
			bits_meta.set(
				ctx,
				lua::MetaMethod::ToString,
				lua::Callback::from_fn(&ctx, |ctx, _, mut stack| {
					let this = stack.consume::<lua::UserData>(ctx)?;
					let this = this.downcast_static::<ModFlags>()?;

					stack.push_front(format!("{:#?}", this).into_value(ctx));
					Ok(lua::CallbackReturn::Return)
				}),
			)?;
			bits.set_metatable(&ctx, Some(bits_meta));

			stack.push_front(lua::Value::UserData(bits));

			Ok(lua::CallbackReturn::Return)
		}),
	)?;

	let ud = lua::UserData::new_static(&ctx, comp);

	ud.set_metatable(&ctx, Some(meta));

	Ok(lua::Value::UserData(ud))
}