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67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/**
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* Alee Forth: A portable and concise Forth implementation in modern C++.
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* Copyright (C) 2023 Clyne Sullivan <clyne@bitgloo.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "corewords.hpp"
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#include "state.hpp"
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#include <iterator>
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bool State::compiling() const
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{
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return dict.read(Dictionary::Compiling);
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}
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void State::compiling(bool yes)
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{
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dict.write(Dictionary::Compiling, yes);
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}
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State::Error State::execute(Addr addr)
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{
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auto stat = setjmp(jmpbuf);
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if (!stat) {
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ip = 0;
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auto ins = addr;
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for (;;) {
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CoreWords::run(ins, *this);
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if (!ip)
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break;
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ip += sizeof(Cell);
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ins = dict.read(ip);
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}
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} else {
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return static_cast<State::Error>(stat);
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}
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return State::Error::none;
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}
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std::size_t State::size() const noexcept
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{
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return std::distance(dstack, static_cast<const Cell *>(dsp)) + 1;
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}
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std::size_t State::rsize() const noexcept
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{
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return std::distance(rstack, static_cast<const Cell *>(rsp)) + 1;
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}
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