blob: d4d7ef2b1edf2236633693dc7a3da2cd80e7763c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/**
* 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"
/**
* To be implemented by the user, this function is called when the `sys` word
* is executed.
*/
void user_sys(State&);
class CoreWords
{
public:
constexpr static Cell WordCount = 37;
constexpr static Cell Semicolon = 26;
/**
* Finds execution token that corresponds to the given word.
* Returns -1 if not found.
*/
static Cell findi(const char *);
static Cell findi(State&, Word);
/**
* Executes the given CoreWord execution token using the given state.
*/
static void run(Cell, State&);
constexpr static char wordsarr[] =
"_lit\0drop\0dup\0swap\0pick\0sys\0"
"+\0-\0m*\0_/\0_%\0"
"_@\0_!\0>r\0r>\0=\0"
"<\0&\0|\0^\0"
"<<\0>>\0:\0_'\0execute\0"
"exit\0;\0_jmp0\0_jmp\0"
"depth\0_rdepth\0_in\0_ev\0find\0"
"_uma\0u<\0um/mod\0";
};
#endif // ALEEFORTH_COREWORDS_HPP
|
