COSMIC MACROS

cosmic-macros is one of the packages that compose THE COSMIC INITIATIVE a WebAssembly orchestration framework.

DirectedHandler

Derive the DirectedHandler to receive Waves: ```rust

[derive(DirectedHandler)]

pub struct MyHandler { logger: PointLogger } ```

ROUTES

Flag one and only one impl with #[routes] and annotate functions functions with #route[()] in order to select messages: ```rust

[routes]

impl MyHandler { #[route("Ext")] pub async fn hello(&self, ctx: InCtx<', Text>) -> Result { Ok(format!("Hello, {}", ctx.input.tostring())) } } ```

FULL EXAMPLE

```rust use cosmicuniverse::err::UniErr; use cosmicuniverse::hyper::HyperSubstance; use cosmicuniverse::log::PointLogger; use cosmicuniverse::substance::Substance; use cosmicuniverse::substance::Substance::Text; use cosmicuniverse::wave::core::ReflectedCore; use cosmic_universe::wave::exchange::InCtx;

[derive(DirectedHandler)]

pub struct MyHandler { logger: PointLogger }

[routes]

impl MyHandler { /// the route attribute captures an ExtMethod implementing a custom MyNameIs /// notice that the InCtx will accept any valid cosmicuniverse::substance::Substance #[route("Ext")] pub async fn hello(&self, ctx: InCtx<', Text>) -> Result { /// also we can return any Substance in our Reflected wave Ok(format!("Hello, {}", ctx.input.to_string())) }

/// if the function returns nothing then an Empty Ok Reflected will be returned unless /// the wave type is Wave<Signal> #[route("Ext")] pub async fn bye(&self, ctx: InCtx<'_,()>) { self.logger.info("funny that! He left without saying a word!"); } } ```