From 5d184aaf30995f3f048114b72c9d32fc8a39cb92 Mon Sep 17 00:00:00 2001
From: Paul Dicker <paul@pitdicker.nl>
Date: Wed, 10 May 2023 14:23:51 +0200
Subject: [PATCH] Add `try_opt` and `expect` macros

---
 src/lib.rs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 336e18751d..9f7293d81e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -546,3 +546,25 @@ impl fmt::Debug for OutOfRange {
 
 #[cfg(feature = "std")]
 impl std::error::Error for OutOfRange {}
+
+/// Workaround because `?` is not (yet) available in const context.
+#[macro_export]
+macro_rules! try_opt {
+    ($e:expr) => {
+        match $e {
+            Some(v) => v,
+            None => return None,
+        }
+    };
+}
+
+/// Workaround because `.expect()` is not (yet) available in const context.
+#[macro_export]
+macro_rules! expect {
+    ($e:expr, $m:literal) => {
+        match $e {
+            Some(v) => v,
+            None => panic!($m),
+        }
+    };
+}