Derive Clone trait for Operation struct

src/operations/cdt.rs

@@ -22,6 +22,7 @@ use crate::operations::cdt_context::CdtContext;
 use crate::Value;
 
 #[doc(hidden)]
+#[derive(Clone)]
 pub enum CdtArgument<'a> {
     Byte(u8),
     Int(i64),
@@ -34,7 +35,14 @@ pub enum CdtArgument<'a> {
 pub type OperationEncoder =
     Box<dyn Fn(&mut Option<&mut Buffer>, &CdtOperation, &[CdtContext]) -> Result<usize>>;
 
+impl Clone for Box<dyn OperationEncoder> {
+    fn clone(&self) -> Self {
+        self.clone_box()
+    }
+}
+
 #[doc(hidden)]
+#[derive(Clone)]
 pub struct CdtOperation<'a> {
     pub op: u8,
     pub encoder: OperationEncoder,

src/operations/exp.rs

@@ -48,6 +48,7 @@ pub enum ExpWriteFlags {
 pub type ExpressionEncoder = Box<dyn Fn(&mut Option<&mut Buffer>, &ExpOperation) -> Result<usize>>;
 
 #[doc(hidden)]
+#[derive(Clone)]
 pub struct ExpOperation<'a> {
     pub encoder: ExpressionEncoder,
     pub policy: i64,

src/operations/mod.rs

@@ -57,6 +57,7 @@ pub enum OperationType {
 }
 
 #[doc(hidden)]
+#[derive(Clone)]
 pub enum OperationData<'a> {
     None,
     Value(&'a Value),
@@ -68,13 +69,15 @@ pub enum OperationData<'a> {
 }
 
 #[doc(hidden)]
+#[derive(Clone)]
 pub enum OperationBin<'a> {
     None,
     All,
     Name(&'a str),
 }
 
 /// Database operation definition. This data type is used in the client's `operate()` method.
+#[derive(Clone)]
 pub struct Operation<'a> {
     // OpType determines type of operation.
     #[doc(hidden)]