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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_COREWORDS_HPP
#define ALEEFORTH_COREWORDS_HPP
#include "types.hpp"
#include "state.hpp"
int user_sys(State&);
class CoreWords
{
public:
constexpr static std::size_t VisibleWordCount = 30; // size
constexpr static std::size_t HiddenWordLiteral = 30; // index
constexpr static std::size_t HiddenWordJump = 31; // index
constexpr static std::size_t WordCount = 32; // size
constexpr static Cell Immediate = (1 << 5);
static int findi(std::string_view str);
static Func find(std::string_view str);
static void run(int i, State& state);
private:
constexpr static char wordsarr[] =
"drop\0dup\0swap\0pick\0sys\0"
"+\0-\0*\0/\0%\0"
"@\0!\0rot\0>r\0r>\0"
"=\0<\0allot\0&\0|\0"
"^\0<<\0>>\0(\0:\0"
";\0here\0exit\0imm\0const\0";
// lit, jmp, jmp0, ', lits
static Func get(int index);
static int op_drop(State& state);
static int op_dup(State& state);
static int op_swap(State& state);
static int op_pick(State& state);
static int op_sys(State& state);
static int op_add(State& state);
static int op_sub(State& state);
static int op_mul(State& state);
static int op_div(State& state);
static int op_mod(State& state);
static int op_peek(State& state);
static int op_poke(State& state);
static int op_rot(State& state);
static int op_pushr(State& state);
static int op_popr(State& state);
static int op_eq(State& state);
static int op_lt(State& state);
static int op_allot(State& state);
static int op_and(State& state);
static int op_or(State& state);
static int op_xor(State& state);
static int op_shl(State& state);
static int op_shr(State& state);
static int op_comment(State& state);
static int op_colon(State& state);
static int op_semic(State& state);
static int op_here(State& state);
static int op_exit(State& state);
static int op_imm(State& state);
static int op_const(State& state);
static int op_literal(State& state);
static int op_jump(State& state);
};
#endif // ALEEFORTH_COREWORDS_HPP
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