added --clean for update && list downloadfolder

1 files changed, 34 insertions, 0 deletions

diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..c82688c
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,34 @@
+use core::fmt;
+
+pub type MLE<T> = Result<T, MLError>;
+
+#[derive(Debug)]
+pub struct MLError {
+    etype: ErrorType,
+    message: String,
+}
+
+#[derive(Debug)]
+pub enum ErrorType {
+    ArgumentError
+}
+
+impl std::error::Error for MLError {
+    fn description(&self) -> &str {
+        &self.message
+    }
+}
+
+impl fmt::Display for MLError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self.etype {
+            ErrorType::ArgumentError => write!(f, "ARGS")
+        }
+    }
+}
+
+impl MLError {
+    pub fn new(etype: ErrorType, message: &str) -> Self {
+        Self { etype, message: String::from(message) }
+    }
+}