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/**
* Alee Forth: A portable and concise Forth implementation in modern C++.
* Copyright (C) 2023 Clyne Sullivan <clyne@bitgloo.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef ALEEFORTH_SPLITMEMDICTRW_HPP
#define ALEEFORTH_SPLITMEMDICTRW_HPP
#include "alee.hpp"
#include <algorithm>
template<unsigned long int LON, unsigned long int HIN>
class SplitMemDictRW : public Dictionary
{
uint8_t *lodict;
uint32_t hidict;
public:
constexpr explicit SplitMemDictRW(uint8_t *lo, uint32_t hi):
lodict(lo), hidict(hi) {}
constexpr SplitMemDictRW(const SplitMemDictRW<LON, HIN>& spd):
SplitMemDictRW(spd.lodict, spd.hidict) {}
constexpr auto& operator=(const SplitMemDictRW<LON, HIN>& spd) {
*this = SplitMemDictRW(spd.lodict, hidict);
return *this;
}
virtual Cell read(Addr addr) const noexcept final {
if (addr < LON)
return *reinterpret_cast<const Cell *>(lodict + addr);
else
return _data20_read_short(hidict + addr - LON);
}
virtual void write(Addr addr, Cell value) noexcept final {
if (addr < LON)
*reinterpret_cast<Cell *>(lodict + addr) = value;
else
_data20_write_short(hidict + addr - LON, value);
}
virtual uint8_t readbyte(Addr addr) const noexcept final {
if (addr < LON)
return lodict[addr];
else
return _data20_read_char(hidict + addr - LON);
}
virtual void writebyte(Addr addr, uint8_t value) noexcept final {
if (addr < LON)
lodict[addr] = value;
else
_data20_write_char(hidict + addr - LON, value);
}
virtual unsigned long int capacity() const noexcept final {
return LON + HIN;
}
};
#endif // ALEEFORTH_SPLITMEMDICTRW_HPP
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