oxedyne/fe2o3 — fe2o3_infer/src/macros.rs

553 bytes, 1 run

created by r1870400018:19735, which is this file's identity for as long as the history lasts, whatever it is later renamed to

1	//! One convenience macro, for the shape of failure this crate meets most.
2
3	/// Unwraps an `Option`, returning a tagged error when it is absent.
4	///
5	/// `fe2o3_core` gives `ok!` for the `Result` case and nothing for the `Option`
6	/// case, so a loader that asks a model for a weight it does not carry would
7	/// otherwise be written as a five-line `match` two dozen times over.
8	#[macro_export]
9	macro_rules! some {
10	($opt:expr, $($arg:expr),+ $(,)?) => {
11	match $opt {
12	Some(v) => v,
13	None => return Err(err!($($arg),+ ; Invalid, Missing)),
14	}
15	};
16	}