Eq for expressions

src/gboml/ast/expression_operators.py

@@ -41,6 +41,13 @@ class BoolExpressionComparison(BoolExpression):
     operator: Operator
     rhs: Expression
 
+    def __bool__(self):
+        """ Checks if lhs and rhs are *exactly* the same tree in an eq relation """
+        #TODO improve me
+        if self.operator == Operator.equal:
+            return self.lhs is self.rhs
+        return False
+
 
 @dataclass
 class ExpressionUseGenScope(ExpressionObj):

src/gboml/ast/expressions.py

@@ -5,7 +5,14 @@ from gboml.ast.base import GBOMLObject
 
 @dataclass
 class ExpressionObj(GBOMLObject):
-    pass
+    def __eq__(self, obj):
+        from gboml.ast.expression_operators import Operator, BoolExpressionComparison
+        # first: check type
+        if not isinstance(obj, Expression):
+            return False
+        if self is obj:
+            return True
+        return BoolExpressionComparison(self, Operator.equal, obj)
 
 
 Expression = int | float | ExpressionObj