+}
+
+
+bool UnusedTypeRemover::apply(Stage &stage)
+{
+ stage.content.visit(*this);
+ NodeRemover().apply(stage, unused_nodes);
+ return !unused_nodes.empty();
+}
+
+void UnusedTypeRemover::visit(Literal &literal)
+{
+ unused_nodes.erase(literal.type);
+}
+
+void UnusedTypeRemover::visit(UnaryExpression &unary)
+{
+ unused_nodes.erase(unary.type);
+ TraversingVisitor::visit(unary);
+}
+
+void UnusedTypeRemover::visit(BinaryExpression &binary)
+{
+ unused_nodes.erase(binary.type);
+ TraversingVisitor::visit(binary);
+}
+
+void UnusedTypeRemover::visit(FunctionCall &call)
+{
+ unused_nodes.erase(call.type);
+ TraversingVisitor::visit(call);
+}
+
+void UnusedTypeRemover::visit(BasicTypeDeclaration &type)
+{
+ if(type.base_type)
+ unused_nodes.erase(type.base_type);
+ unused_nodes.insert(&type);
+}
+
+void UnusedTypeRemover::visit(ImageTypeDeclaration &type)
+{
+ if(type.base_type)
+ unused_nodes.erase(type.base_type);
+ unused_nodes.insert(&type);
+}