statements in rust

rust/rox/src/expression.rs

@@ -1,7 +1,12 @@
 use crate::token::{self, Token};
 
+/// Enumeration of all types of expressions.
 #[derive(Debug, Clone, PartialEq)]
 pub enum Expression {
+    Assign {
+        name: Token,
+        value: Box<Expression>,
+    },
     Binary {
         left: Box<Expression>,
         operator: Token,
@@ -17,4 +22,7 @@ pub enum Expression {
         operator: Token,
         right: Box<Expression>,
     },
+    Variable {
+        name: Token,
+    },
 }