[ox/std] Add iterator to Vector

(synced from 15d8e9de5b)

src/ox/std/iterator.hpp

@@ -0,0 +1,36 @@
+
+#pragma once
+
+#ifndef OX_USE_STDLIB
+namespace std {
+
+struct input_iterator_tag {
+};
+
+struct output_iterator_tag {
+};
+
+struct forward_iterator_tag: public input_iterator_tag {
+};
+
+struct bidirectional_iterator_tag: public forward_iterator_tag {
+};
+
+struct random_access_iterator_tag: public bidirectional_iterator_tag {
+};
+
+struct contiguous_iterator_tag: public random_access_iterator_tag {
+};
+
+template<typename Category, typename T>
+struct iterator {
+	using iterator_category = Category;
+	using value_type = T;
+	using pointer = T*;
+	using reference = T&;
+};
+
+}
+#else
+#include <iterator>
+#endif