Add while statement

1 files changed, 9 insertions, 0 deletions

diff --git a/src/com/craftinginterpreters/lox/Interpreter.java b/src/com/craftinginterpreters/lox/Interpreter.java
index 6c32233..6b3e409 100644
--- a/src/com/craftinginterpreters/lox/Interpreter.java
+++ b/src/com/craftinginterpreters/lox/Interpreter.java
@@ -158,6 +158,15 @@ class Interpreter implements Expr.Visitor<Object>, Stmt.Visitor<Void> {
     }
 
     @Override
+    public Void visitWhileStmt(Stmt.While stmt) {
+        while (isTruthy(evaluate(stmt.condition))) {
+            execute(stmt.body);
+        }
+
+        return null;
+    }
+
+    @Override
     public Object visitAssignExpr(Expr.Assign expr) {
         Object value = evaluate(expr.value);
         environment.assign(expr.name, value);