1 files changed, 28 insertions, 0 deletions
diff --git a/development/tools/cargo-workspace2/src/ops/error.rs b/development/tools/cargo-workspace2/src/ops/error.rs
new file mode 100644
index 000000000000..3dde73d954d8
--- /dev/null
+++ b/development/tools/cargo-workspace2/src/ops/error.rs
@@ -0,0 +1,28 @@
+use std::fmt::{self, Display, Formatter};
+
+/// Special result type that wraps an OpError
+pub type Result<T> = std::result::Result<T, OpError>;
+
+/// An error that occured while running an operation
+#[derive(Debug)]
+pub enum OpError {
+    NoSuchCrate(String),
+    CircularDependency(String, String),
+}
+
+impl Display for OpError {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                Self::NoSuchCrate(n) => format!("No crate `{}` was not found in the workspace", n),
+                Self::CircularDependency(a, b) => format!(
+                    "Crates `{}` and `{}` share a hard circular dependency.\
+                     Operation not possible!",
+                    a, b
+                ),
+            }
+        )
+    }
+}