1 files changed, 21 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
index c7ea164..3ae6463 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,6 +12,27 @@ pub mod proxy;
 pub mod subscription;
 
 #[derive(Debug)]
+pub struct IllegalArgumentException(String);
+
+impl IllegalArgumentException {
+    pub fn new(msg: &str) -> IllegalArgumentException {
+        IllegalArgumentException(msg.to_string())
+    }
+}
+
+impl fmt::Display for IllegalArgumentException {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+
+impl Error for IllegalArgumentException {
+    fn description(&self) -> &str {
+        &self.0
+    }
+}
+
+#[derive(Debug)]
 pub struct IllegalStateException {
     details: String
 }