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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
// sprit-forth: A portable subroutine-threaded Forth.
// Copyright (C) 2024 Clyne Sullivan <clyne@bitgloo.com>
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; either version 2 of the License, or (at your
// option) any later version.
//
// This library 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 Library General Public License for
// more details.
//
// You should have received a copy of the GNU Library General Public License
// along with this library; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#include <algorithm>
#include <iostream>
#include <string>
#include "core.hpp"
#include "parse.hpp"
#include "state.hpp"
#include "types.hpp"
// TODO:
// sys m* _/ _% _' depth _rdepth _in _ev find _uma u< um/mod
static void peek() { *Forth.sp = *(Cell *)(*Forth.sp); }
static void commaSP() { comma(Forth.pop()); }
static void discard() { auto v = Forth.pop(); (void)v; }
static void tobool() { if (*Forth.sp) *Forth.sp = -1; }
constinit std::array words {
Word("[", WordWrap<[] { Forth.state = 0; }>).markImmediate(),
Word("]", WordWrap<[] { Forth.state = -1; }>),
Word("@", WordWrap<peek>),
Word("c@", WordWrap<peek, [] { *Forth.sp &= 0xFF; }>),
Word("!", WordWrap<[] { auto a = (Cell *)Forth.pop(); *a = Forth.pop(); }>),
Word("c!", WordWrap<[] { auto a = (char *)Forth.pop(); *a = Forth.pop(); }>),
Word("_d", WordWrap<[] { *Forth.sp += (Cell)Forth.dictdata(); }>),
Word("_jmp", WordWrap<[] { jump((FuncList)*++Exec.ip); }>),
Word("_jmp0", WordWrap<[] {
++Exec.ip;
if (Forth.pop() == 0)
jump((FuncList)*Exec.ip);
}>),
Word(",", WordWrap<commaSP>),
Word("emit", WordWrap<[] { std::putchar(Forth.pop()); }>),
Word("key", WordWrap<[] { Forth.push(key()); }>),
Word("key?", WordWrap<[] { Forth.push(haskey()); }, tobool>),
Word("execute", WordWrap<[] { (void)Exec.executor((FuncList *)Forth.pop()); }>),
Word(":", WordWrap<colon>),
Word(";", WordWrap<semic>).markImmediate(),
Word("exit", fexit),
Word("drop", WordWrap<discard>),
Word("dup", WordWrap<[] { Forth.push(*Forth.sp); }>),
Word("swap", WordWrap<[] { std::swap(*Forth.sp, *(Forth.sp - 1)); }>),
Word("pick", WordWrap<[] { auto t = *(Forth.sp - *Forth.sp - 1); *Forth.sp = t; }>),
Word("cells", WordWrap<[] { *Forth.sp *= sizeof(Cell); }>),
Word("+", WordWrap<[] { *(Forth.sp - 1) += *Forth.sp; }, discard>),
Word("-", WordWrap<[] { *(Forth.sp - 1) -= *Forth.sp; }, discard>),
Word("*", WordWrap<[] { *(Forth.sp - 1) *= *Forth.sp; }, discard>),
Word("/", WordWrap<[] { *(Forth.sp - 1) /= *Forth.sp; }, discard>),
Word("mod", WordWrap<[] { *(Forth.sp - 1) %= *Forth.sp; }, discard>),
Word("=", WordWrap<[] { *(Forth.sp - 1) = *(Forth.sp - 1) == *Forth.sp; }, discard, tobool>),
Word("<", WordWrap<[] { *(Forth.sp - 1) = *(Forth.sp - 1) < *Forth.sp; }, discard, tobool>),
Word("or", WordWrap<[] { *(Forth.sp - 1) |= *Forth.sp; }, discard>),
Word("and", WordWrap<[] { *(Forth.sp - 1) &= *Forth.sp; }, discard>),
Word("xor", WordWrap<[] { *(Forth.sp - 1) ^= *Forth.sp; }, discard>),
Word("lshift", WordWrap<[] { *(Forth.sp - 1) <<= *Forth.sp; }, discard>),
Word("rshift", WordWrap<[] { *(Forth.sp - 1) >>= *Forth.sp; }, discard>),
Word(">r", WordWrap<[] { Forth.rpush(Forth.pop()); }>),
Word("r>", WordWrap<[] { Forth.push(Forth.rpop()); }>),
Word("immediate", WordWrap<[] { Forth.latest->markImmediate(); }>),
Word("aligned", WordWrap<[] { *Forth.sp = aligned(*Forth.sp); }>),
Word("align", WordWrap<align>),
Word("literal", WordWrap<[] { if (Forth.state) compileliteral(); }>).markImmediate(),
Word("\'", WordWrap<tick>),
Word("_i", WordWrap<[] { *Forth.sp = ((Word *)*Forth.sp)->immediate(); }, tobool>),
Word("[']", WordWrap<tick, compileliteral>).markImmediate(),
Word("compile,", WordWrap<peek, commaSP>),
Word("word", WordWrap<word>),
Word("_b", WordWrap<[] {
std::putchar('#'); // Gives a good breakpoint spot for gdb
}>),
Word(".", WordWrap<[] { std::cout << Forth.pop() << ' '; }>)
};
void getinput()
{
std::string line;
if (std::cin.good()) {
std::getline(std::cin, line);
std::for_each(line.begin(), line.end(), addkey);
}
}
int main()
{
std::for_each(words.begin(), words.end(), [](Word& w) { Forth.add(w); });
while (std::cin.good()) {
auto result = parse();
if (result == Error::none)
std::cout << (Forth.state ? "compiled" : "ok") << std::endl;
else
std::cout << "error " << static_cast<int>(result) << std::endl;
}
}
|
