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102 lines
3.2 KiB
C++
102 lines
3.2 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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#ifndef ALEEFORTH_COREWORDS_HPP
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#define ALEEFORTH_COREWORDS_HPP
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#include "types.hpp"
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#include "state.hpp"
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#include <string_view>
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void user_sys(State&);
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class CoreWords
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{
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public:
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constexpr static std::size_t VisibleWordCount = 38; // size
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constexpr static auto HiddenWordJump = VisibleWordCount; // index
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constexpr static auto WordCount = VisibleWordCount + 1; // size
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constexpr static Cell Immediate = (1 << 5);
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constexpr static Cell Compiletime = (1 << 6);
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static int findi(std::string_view);
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static int findi(State&, Word);
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static Func find(State&, Word);
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static void run(int, State&);
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private:
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// Ends with '\0': regular word
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// Ends with '\1': compile-only word
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constexpr static char wordsarr[] =
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"drop\0dup\0swap\0pick\0sys\0"
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"+\0-\0*\0/\0%\0"
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"_@\0_!\0rot\0>r\0r>\0"
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"=\0<\0allot\0&\0|\0"
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"^\0<<\0>>\0(\0:\1"
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";\1here\0imm\0const\0depth\0"
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"key\0exit\0'\0execute\0_jmp\0"
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"_jmp0\0_lit\0literal\1";
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static Func get(int);
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static void op_drop(State&);
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static void op_dup(State&);
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static void op_swap(State&);
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static void op_pick(State&);
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static void op_sys(State&);
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static void op_add(State&);
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static void op_sub(State&);
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static void op_mul(State&);
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static void op_div(State&);
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static void op_mod(State&);
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static void op_peek(State&);
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static void op_poke(State&);
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static void op_rot(State&); // : rot >r swap r> swap ;
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static void op_pushr(State&);
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static void op_popr(State&);
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static void op_eq(State&);
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static void op_lt(State&);
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static void op_allot(State&);
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static void op_and(State&);
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static void op_or(State&);
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static void op_xor(State&);
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static void op_shl(State&);
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static void op_shr(State&);
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static void op_comment(State&);
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static void op_colon(State&);
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static void op_semic(State&);
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static void op_here(State&);
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static void op_imm(State&);
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static void op_const(State&);
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static void op_lit(State&);
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static void op_jump(State&);
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static void op_depth(State&);
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static void op_key(State&);
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static void op_exit(State&);
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static void op_tick(State&);
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static void op_execute(State&);
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static void op_jmp(State&);
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static void op_jmp0(State&);
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static void op_literal(State&); // : literal ['] _lit , , ; imm
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};
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#endif // ALEEFORTH_COREWORDS_HPP
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