+
+set<Node *> AssignmentCollector::apply(Node &node)
+{
+ node.visit(*this);
+ return assigned_variables;
+}
+
+void AssignmentCollector::visit(VariableReference &var)
+{
+ if(assignment_target)
+ assigned_variables.insert(var.declaration);
+}
+
+void AssignmentCollector::visit(InterfaceBlockReference &iface)
+{
+ if(assignment_target)
+ assigned_variables.insert(iface.declaration);
+}
+
+void AssignmentCollector::visit(UnaryExpression &unary)
+{
+ SetFlag set_assignment(assignment_target, (unary.oper->token[1]=='+' || unary.oper->token[1]=='-'));
+ TraversingVisitor::visit(unary);
+}
+
+void AssignmentCollector::visit(BinaryExpression &binary)
+{
+ binary.left->visit(*this);
+ SetFlag clear_assignment(assignment_target, false);
+ binary.right->visit(*this);
+}
+
+void AssignmentCollector::visit(Assignment &assign)
+{
+ {
+ SetFlag set_assignment(assignment_target);
+ assign.left->visit(*this);
+ }
+ assign.right->visit(*this);
+}
+