Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 38 insertions, 0 deletions

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)
+    }
+}