From f08d697699573b034f1cc87015af15e30cf808fd Mon Sep 17 00:00:00 2001
From: Antoine Viallon <antoine@lesviallon.fr>
Date: Wed, 24 May 2023 00:13:56 +0200
Subject: [PATCH] nodes: assignments are not pure if the value is not None

---
 compiler/nodes.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/nodes.py b/compiler/nodes.py
index b0c0982..b9918a1 100644
--- a/compiler/nodes.py
+++ b/compiler/nodes.py
@@ -400,6 +400,10 @@ class Assignment(Node):
     def _values(self) -> list[Node | Any]:
         return [self.identifier, self.value]
 
+    @property
+    def pure(self) -> bool:
+        return self.value is None
+
     def semantic_analysis(self, context: semantic.Context):
         super(Assignment, self).semantic_analysis(context)
         name = self.identifier.value