1 files changed, 9 insertions, 1 deletions
diff --git a/compilador/astree/expr.py b/compilador/astree/expr.py
index d5a2cb0..c074553 100644
--- a/compilador/astree/expr.py
+++ b/compilador/astree/expr.py
@@ -114,9 +114,17 @@ class ReadExpr:
 
 # A return statement.
 #
-#     return a
+#     retorna a
 ReturnExpr = Optional[Expr]
 
+# A while expression.
+#
+#     mientras (cond) { }
+@dataclass
+class WhileExpr:
+    cond: Expr
+    body: Expr
+
 # A Javañol expression.
 Expr = (AccessExpr | AssignExpr | BinarithmExpr | CallExpr |
         ConstantExpr | ForExpr | IfExpr | CompoundExpr |