Attribute Macro capnp 

#[capnp]

Generate Cap’n Proto schema from an impl block.

Example

use server_less::capnp;

struct UserService;

#[capnp(id = "0x85150b117366d14b")]
impl UserService {
    /// Get user by ID
    fn get_user(&self, id: String) -> String { ... }

    /// Create a new user
    fn create_user(&self, name: String, email: String) -> String { ... }
}

// Get the Cap'n Proto schema
let schema = UserService::capnp_schema();

// Write to file for use with capnpc
UserService::write_capnp("schema/users.capnp")?;

The generated schema can be used with capnpc to generate the full Cap’n Proto serialization code.