From 5d846eb88cf2ebe120923aef974df8d8216f4e59 Mon Sep 17 00:00:00 2001
From: Xiretza <xiretza@xiretza.xyz>
Date: Wed, 7 Dec 2022 19:16:15 +0100
Subject: [PATCH] common/rust: add Path::parents helper method

---
 common/rust/src/lib.rs | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/common/rust/src/lib.rs b/common/rust/src/lib.rs
index 457791d..8be2e20 100644
--- a/common/rust/src/lib.rs
+++ b/common/rust/src/lib.rs
@@ -2,7 +2,7 @@
 
 mod section_range;
 
-use std::mem;
+use std::{mem, path::Path};
 
 pub use section_range::{EmptyRange, InvalidSectionString, SectionRange};
 
@@ -61,3 +61,18 @@ impl<T> Iterator for UpToTwoIter<T> {
         ret
     }
 }
+
+pub trait PathExt {
+    type Iter<'a>: Iterator<Item = &'a Path>
+    where
+        Self: 'a;
+    fn parents(&self) -> Self::Iter<'_>;
+}
+
+impl PathExt for Path {
+    type Iter<'a> = std::iter::Successors<&'a Path, for<'p> fn(&&'p Path) -> Option<&'p Path>>;
+
+    fn parents(&self) -> Self::Iter<'_> {
+        std::iter::successors(Some(self), |dir| dir.parent())
+    }
+}