canic-dsl

Symbolic tokens for Canic endpoint macros.

This crate defines zero-cost marker constants used inside #[canic_query] and #[canic_update] attributes. The symbols are never evaluated; the proc-macro crate pattern-matches on identifiers and expands them into runtime access calls. Use requires(...) expressions with all(...), any(...), and not(...) to compose predicates.

use canic_dsl::access::{app, caller};
use canic_dsl_macros::canic_update;

#[canic_update(requires(app::allows_updates(), caller::is_controller()))]
async fn admin_only_expr() -> Result<(), canic::Error> {
    Ok(())
}