Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/vendor/chalk-ir-0.87.0/src/visit/binder_impls.rs b/vendor/chalk-ir-0.87.0/src/visit/binder_impls.rs
new file mode 100644
index 000000000..709f99044
--- /dev/null
+++ b/vendor/chalk-ir-0.87.0/src/visit/binder_impls.rs
@@ -0,0 +1,47 @@
+//! This module contains impls of `TypeVisitable` for those types that
+//! introduce binders.
+//!
+//! The more interesting impls of `TypeVisitable` remain in the `visit` module.
+
+use crate::interner::HasInterner;
+use crate::{
+    Binders, Canonical, ControlFlow, DebruijnIndex, FnPointer, Interner, TypeVisitable, TypeVisitor,
+};
+
+impl<I: Interner> TypeVisitable<I> for FnPointer<I> {
+    fn visit_with<B>(
+        &self,
+        visitor: &mut dyn TypeVisitor<I, BreakTy = B>,
+        outer_binder: DebruijnIndex,
+    ) -> ControlFlow<B> {
+        self.substitution
+            .visit_with(visitor, outer_binder.shifted_in())
+    }
+}
+
+impl<T, I: Interner> TypeVisitable<I> for Binders<T>
+where
+    T: HasInterner + TypeVisitable<I>,
+{
+    fn visit_with<B>(
+        &self,
+        visitor: &mut dyn TypeVisitor<I, BreakTy = B>,
+        outer_binder: DebruijnIndex,
+    ) -> ControlFlow<B> {
+        self.value.visit_with(visitor, outer_binder.shifted_in())
+    }
+}
+
+impl<I, T> TypeVisitable<I> for Canonical<T>
+where
+    I: Interner,
+    T: HasInterner<Interner = I> + TypeVisitable<I>,
+{
+    fn visit_with<B>(
+        &self,
+        visitor: &mut dyn TypeVisitor<I, BreakTy = B>,
+        outer_binder: DebruijnIndex,
+    ) -> ControlFlow<B> {
+        self.value.visit_with(visitor, outer_binder.shifted_in())
+    }
+}