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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"
#include <string_view>
void user_sys(State&);
class CoreWords
{
public:
constexpr static std::size_t WordCount = 37;
constexpr static Cell Immediate = (1 << 5);
constexpr static Cell Compiletime = (1 << 6);
static int findi(std::string_view);
static int findi(State&, Word);
static Func find(State&, Word);
static bool run(int, State&);
private:
// Ends with '\0': regular word
// Ends with '\1': compile-only word
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:\1"
";\1here\0const\0depth\0"
"key\0exit\0'\0execute\0_jmp\0"
"_jmp0\0_lit\0literal\1";
static Func get(int);
static void op_drop(State&);
static void op_dup(State&);
static void op_swap(State&);
static void op_pick(State&);
static void op_sys(State&);
static void op_add(State&);
static void op_sub(State&);
static void op_mul(State&);
static void op_div(State&);
static void op_mod(State&);
static void op_peek(State&);
static void op_poke(State&);
static void op_rot(State&); // : rot >r swap r> swap ;
static void op_pushr(State&);
static void op_popr(State&);
static void op_eq(State&);
static void op_lt(State&);
static void op_allot(State&);
static void op_and(State&);
static void op_or(State&);
static void op_xor(State&);
static void op_shl(State&);
static void op_shr(State&);
static void op_comment(State&);
static void op_colon(State&);
static void op_semic(State&);
static void op_here(State&);
static void op_const(State&);
static void op_lit(State&);
static void op_depth(State&);
static void op_key(State&);
static void op_exit(State&);
static void op_tick(State&);
static void op_execute(State&);
static void op_jmp(State&);
static void op_jmp0(State&);
static void op_literal(State&); // : literal ['] _lit , , ; imm
};
#endif // ALEEFORTH_COREWORDS_HPP
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