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-rw-r--r--include/utf8_iterator.hpp39
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diff --git a/include/utf8_iterator.hpp b/include/utf8_iterator.hpp
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+++ b/include/utf8_iterator.hpp
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+#ifndef FUD_UTF8_ITERATOR_HPP
+#define FUD_UTF8_ITERATOR_HPP
+
+#include "string.hpp"
+#include "utf8.hpp"
+
+#include <cstddef>
+#include <optional>
+
+namespace fud {
+
+class Utf8Iterator {
+ private:
+ size_t m_index{0};
+ // NOLINTBEGIN(cppcoreguidelines-avoid-const-or-ref-data-members)
+ const StringView m_view;
+ // NOLINTEND(cppcoreguidelines-avoid-const-or-ref-data-members)
+
+ public:
+ explicit constexpr Utf8Iterator(const String& extString) : m_view{extString}
+ {
+ }
+
+ explicit constexpr Utf8Iterator(const StringView& view) : m_view{view}
+ {
+ }
+
+ constexpr void reset()
+ {
+ m_index = 0;
+ }
+
+ [[nodiscard]] std::optional<ExtUtf8> peek() const;
+ std::optional<ExtUtf8> next();
+};
+
+} // namespace fud
+
+#endif