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/*
* libfud
* Copyright 2024 Dominick Allen
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fud_utf8_iterator.hpp"
namespace fud {
Option<Utf8> Utf8Iterator::peek() const
{
if (m_index >= m_view.length()) {
return NullOpt;
}
auto character = Utf8::from(m_view, m_index);
if (!character.valid()) {
return NullOpt;
}
return character;
}
Option<Utf8> Utf8Iterator::next()
{
if (m_index >= m_view.length()) {
m_index = m_view.length();
return NullOpt;
}
auto character = Utf8::from(m_view, m_index);
if (!character.valid()) {
m_index = m_view.length();
return NullOpt;
}
m_index += character.size();
return character;
}
} // namespace fud
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