Affectation de variable

src/expr.rs

@@ -1,5 +1,11 @@
 use crate::token::Token;
 
+#[derive(Clone)]
+pub struct Assign {
+    pub name: Token,
+    pub value: Box<Expr>,
+}
+
 #[derive(Clone)]
 pub struct Binary {
     pub left: Box<Expr>,
@@ -38,6 +44,7 @@ pub enum Expr {
     LiteralExpr(Literal),
     UnaryExpr(Unary),
     VariableExpr(Variable),
+    AssignExpr(Assign),
 }
 
 pub trait ExprVisitor<T> {
@@ -47,5 +54,6 @@ pub trait ExprVisitor<T> {
     fn visit_unary(&mut self, u: &Unary) -> T;
     fn visit_expr(&mut self, e: &Expr) -> T;
     fn visit_variable(&mut self, v: &Variable) -> T;
+    fn visit_assign(&mut self, a: &Assign) -> T;
 }