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#include "utf8_iterator.hpp"
namespace fud {
std::optional<ExtUtf8> Utf8Iterator::peek() const
{
if (m_index >= m_view.length()) {
return std::nullopt;
}
auto utf8 = ExtUtf8::fromStringView(m_view, m_index);
if (!utf8.valid()) {
return std::nullopt;
}
return utf8;
}
std::optional<ExtUtf8> Utf8Iterator::next()
{
if (m_index >= m_view.length()) {
m_index = m_view.length();
return std::nullopt;
}
auto utf8 = ExtUtf8::fromStringView(m_view, m_index);
if (!utf8.valid()) {
m_index = m_view.length();
return std::nullopt;
}
m_index += utf8.size();
return utf8;
}
} // namespace fud
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