diff --git a/src/rstd/collections.rs b/src/rstd/collections.rs
index 3db9aad..926addf 100644
--- a/src/rstd/collections.rs
+++ b/src/rstd/collections.rs
@@ -3,3 +3,4 @@
 pub mod avl;
 pub mod pair;
 pub mod stack;
+pub mod tree;
diff --git a/src/rstd/collections/tree.rs b/src/rstd/collections/tree.rs
new file mode 100644
index 0000000..10ff42d
--- /dev/null
+++ b/src/rstd/collections/tree.rs
@@ -0,0 +1,40 @@
+use std::{error::Error, fmt::Display};
+
+use crate::rstd::{atomic::au64::*, point::*};
+
+#[derive(Debug)]
+pub enum TreeParseError<E> {
+    Int(IntParseError),
+    Point(PointParseError),
+    Key(E),
+}
+
+impl<E> From<IntParseError> for TreeParseError<E> {
+    fn from(value: IntParseError) -> Self {
+        Self::Int(value)
+    }
+}
+
+impl<E> From<PointParseError> for TreeParseError<E> {
+    fn from(value: PointParseError) -> Self {
+        Self::Point(value)
+    }
+}
+
+impl<E: Display> Display for TreeParseError<E> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Int(int_error) => {
+                write!(f, "failed to parse AVL tree height: {int_error}")
+            }
+            Self::Point(point_error) => {
+                write!(f, "failed to parse AVL node reference: {point_error}")
+            }
+            Self::Key(key_error) => {
+                write!(f, "failed to parse AVL node key: {key_error}")
+            }
+        }
+    }
+}
+
+impl<E: Error> Error for TreeParseError<E> {}