From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Mon, 8 Jan 2024 01:21:28 +0400
Subject: Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
---
vendor/miette/src/macro_helpers.rs | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 vendor/miette/src/macro_helpers.rs
(limited to 'vendor/miette/src/macro_helpers.rs')
diff --git a/vendor/miette/src/macro_helpers.rs b/vendor/miette/src/macro_helpers.rs
new file mode 100644
index 0000000..5520899
--- /dev/null
+++ b/vendor/miette/src/macro_helpers.rs
@@ -0,0 +1,38 @@
+// Huge thanks to @jam1gamer for this hack:
+// https://twitter.com/jam1garner/status/1515887996444323840
+
+#[doc(hidden)]
+pub trait IsOption {}
+impl<T> IsOption for Option<T> {}
+
+#[doc(hidden)]
+#[derive(Debug, Default)]
+pub struct OptionalWrapper<T>(pub core::marker::PhantomData<T>);
+
+impl<T> OptionalWrapper<T> {
+ pub fn new() -> Self {
+ Self(core::marker::PhantomData)
+ }
+}
+
+#[doc(hidden)]
+pub trait ToOption {
+ #[doc(hidden)]
+ fn to_option<T>(self, value: T) -> Option<T>;
+}
+
+impl<T> OptionalWrapper<T>
+where
+ T: IsOption,
+{
+ #[doc(hidden)]
+ pub fn to_option(self, value: &T) -> &T {
+ value
+ }
+}
+
+impl<T> ToOption for &OptionalWrapper<T> {
+ fn to_option<U>(self, value: U) -> Option<U> {
+ Some(value)
+ }
+}
--
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