Add Steal::is_stolen()

Nadrieril · Nadrieril · commit 09ae438eb095 · 2024-08-08T12:11:05.000+02:00
diff --git a/compiler/rustc_data_structures/src/steal.rs b/compiler/rustc_data_structures/src/steal.rs
@@ -51,6 +51,12 @@ impl<T> Steal<T> {
         let value = value_ref.take();
         value.expect("attempt to steal from stolen value")
     }
+
+    /// Writers of rustc drivers often encounter stealing issues. This function makes it possible to
+    /// handle these errors gracefully. This is not used within rustc as the time of writing.
+    pub fn is_stolen(&self) -> bool {
+        self.value.borrow().is_none()
+    }
 }
 
 impl<CTX, T: HashStable<CTX>> HashStable<CTX> for Steal<T> {

Original file line number	Diff line number	Diff line change
`@@ -51,6 +51,12 @@ impl<T> Steal<T> {`
`51`	`51`	`let value = value_ref.take();`
`52`	`52`	`value.expect("attempt to steal from stolen value")`
`53`	`53`	`}`
	`54`	`+`
	`55`	`+ /// Writers of rustc drivers often encounter stealing issues. This function makes it possible to`
	`56`	`+ /// handle these errors gracefully. This is not used within rustc as the time of writing.`
	`57`	`+ pub fn is_stolen(&self) -> bool {`
	`58`	`+ self.value.borrow().is_none()`
	`59`	`+ }`
`54`	`60`	`}`
`55`	`61`
`56`	`62`	`impl<CTX, T: HashStable<CTX>> HashStable<CTX> for Steal<T> {`