Macro not_allowed 

macro_rules! not_allowed {
    ($err:expr) => { ... };
    ($fmt:expr, $($arg:tt)*) => { ... };
}

Returns early with a Error::NotAllowed.

Examples

use fory_core::not_allowed;
use fory_core::error::Error;

fn check_operation() -> Result<(), Error> {
    not_allowed!("operation not allowed");
}

fn check_operation_with_context(op: &str) -> Result<(), Error> {
    not_allowed!("operation {} not allowed", op);
}