60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
/*
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* Copyright 2015 - 2018 gtalent2@gmail.com
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <ox/std/byteswap.hpp>
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#include <ox/std/memops.hpp>
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#include "err.hpp"
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#include "presenceindicator.hpp"
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namespace ox {
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FieldPresenceIndicator::FieldPresenceIndicator(uint8_t *mask, std::size_t maxLen) {
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m_mask = mask;
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m_maskLen = maxLen;
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}
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Result<bool> FieldPresenceIndicator::get(std::size_t i) const {
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if (i / 8 < m_maskLen) {
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return (m_mask[i / 8] >> (i % 8)) & 1;
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} else {
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return {false, OxError(MC_PRESENCEMASKOUTBOUNDS)};
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}
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}
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Error FieldPresenceIndicator::set(std::size_t i, bool on) {
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if (i / 8 < m_maskLen) {
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if (on) {
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m_mask[i / 8] |= 1 << (i % 8);
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} else {
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m_mask[i / 8] &= ~(1 << (i % 8));
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}
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return OxError(0);
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} else {
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return OxError(MC_PRESENCEMASKOUTBOUNDS);
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}
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}
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void FieldPresenceIndicator::setFields(int fields) noexcept {
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m_fields = fields;
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m_maskLen = (fields / 8 + 1) - (fields % 8 == 0);
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}
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int FieldPresenceIndicator::getFields() const noexcept {
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return m_fields;
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}
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void FieldPresenceIndicator::setMaxLen(int maxLen) noexcept {
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m_maskLen = maxLen;
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}
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int FieldPresenceIndicator::getMaxLen() const noexcept {
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return m_maskLen;
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}
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}
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