757d603e4c
* include/libmes-mini.h (g_stdin, g_stdout, g_stderr): Rename to __stdin, __stdout, __stderr. Update users.
345 lines
6.3 KiB
C
345 lines
6.3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
|
||
* GNU Mes --- Maxwell Equations of Software
|
||
* Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||
*
|
||
* This file is part of GNU Mes.
|
||
*
|
||
* GNU Mes is free software; you can redistribute it and/or modify it
|
||
* under the terms of the GNU General Public License as published by
|
||
* the Free Software Foundation; either version 3 of the License, or (at
|
||
* your option) any later version.
|
||
*
|
||
* GNU Mes 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 General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#if POSIX
|
||
#error "POSIX not supported"
|
||
#endif
|
||
|
||
#include <libmes.h>
|
||
|
||
#include <fcntl.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
|
||
char arena[300];
|
||
|
||
typedef int SCM;
|
||
|
||
SCM g_stack = 0;
|
||
SCM r0 = 0; // a/env
|
||
SCM r1 = 0; // param 1
|
||
SCM r2 = 0; // save 2+load/dump
|
||
SCM r3 = 0; // continuation
|
||
|
||
enum type_t {TCHAR, TCLOSURE, TCONTINUATION, TFUNCTION, TKEYWORD, TMACRO, TNUMBER, TPAIR, TREF, TSPECIAL, TSTRING, TSYMBOL, TVALUES, TVECTOR, TBROKEN_HEART};
|
||
|
||
struct scm {
|
||
enum type_t type;
|
||
SCM car;
|
||
SCM cdr;
|
||
};
|
||
|
||
#if __MESC__
|
||
struct scm *g_cells = arena;
|
||
#else
|
||
struct scm *g_cells = (struct scm*)arena;
|
||
#endif
|
||
|
||
#define cell_nil 1
|
||
#define cell_f 2
|
||
#define cell_t 3
|
||
|
||
#define TYPE(x) (g_cells[x].type)
|
||
|
||
#define CAR(x) g_cells[x].car
|
||
|
||
#define CDR(x) g_cells[x].cdr
|
||
#define VALUE(x) g_cells[x].cdr
|
||
|
||
SCM
|
||
car (SCM x)
|
||
{
|
||
return CAR (x);
|
||
}
|
||
|
||
SCM
|
||
cdr (SCM x)
|
||
{
|
||
return CDR (x);
|
||
}
|
||
|
||
SCM caar (SCM x) {return car (car (x));}
|
||
SCM cadr (SCM x) {return car (cdr (x));}
|
||
SCM cdar (SCM x) {return cdr (car (x));}
|
||
SCM cddr (SCM x) {return cdr (cdr (x));}
|
||
|
||
SCM
|
||
gc_peek_frame ()
|
||
{
|
||
SCM frame = car (g_stack);
|
||
r1 = car (frame);
|
||
r2 = cadr (frame);
|
||
r3 = car (cddr (frame));
|
||
r0 = cadr (cddr (frame));
|
||
return frame;
|
||
}
|
||
|
||
// Environment setup
|
||
|
||
SCM
|
||
mes_environment ()
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
SCM
|
||
mes_builtins (SCM a)
|
||
{
|
||
return a;
|
||
}
|
||
|
||
SCM
|
||
fill ()
|
||
{
|
||
TYPE (0) = 0x6c6c6168;
|
||
CAR (0) = 0x6a746f6f;
|
||
CDR (0) = 0x00002165;
|
||
|
||
TYPE (1) = TSYMBOL;
|
||
CAR (1) = 0x2d2d2d2d;
|
||
CDR (1) = 0x3e3e3e3e;
|
||
|
||
TYPE (9) = 0x2d2d2d2d;
|
||
CAR (9) = 0x2d2d2d2d;
|
||
CDR (9) = 0x3e3e3e3e;
|
||
|
||
// (A(B))
|
||
TYPE (10) = TPAIR;
|
||
CAR (10) = 11;
|
||
CDR (10) = 12;
|
||
|
||
TYPE (11) = TCHAR;
|
||
CAR (11) = 0x58585858;
|
||
CDR (11) = 89;
|
||
|
||
TYPE (12) = TPAIR;
|
||
CAR (12) = 13;
|
||
CDR (12) = 1;
|
||
|
||
TYPE (13) = TCHAR;
|
||
CAR (11) = 0x58585858;
|
||
CDR (13) = 90;
|
||
|
||
TYPE (14) = 0x58585858;
|
||
CAR (14) = 0x58585858;
|
||
CDR (14) = 0x58585858;
|
||
|
||
TYPE (14) = 0x58585858;
|
||
CAR (14) = 0x58585858;
|
||
CDR (14) = 0x58585858;
|
||
|
||
TYPE (16) = 0x3c3c3c3c;
|
||
CAR (16) = 0x2d2d2d2d;
|
||
CDR (16) = 0x2d2d2d2d;
|
||
return 0;
|
||
}
|
||
|
||
SCM
|
||
display_ (SCM x)
|
||
{
|
||
//puts ("<display>\n");
|
||
switch (TYPE (x))
|
||
{
|
||
case TCHAR:
|
||
{
|
||
//puts ("<char>\n");
|
||
puts ("#\\");
|
||
putchar (VALUE (x));
|
||
break;
|
||
}
|
||
case TFUNCTION:
|
||
{
|
||
//puts ("<function>\n");
|
||
if (VALUE (x) == 0)
|
||
puts ("core:make-cell");
|
||
if (VALUE (x) == 1)
|
||
puts ("cons");
|
||
if (VALUE (x) == 2)
|
||
puts ("car");
|
||
if (VALUE (x) == 3)
|
||
puts ("cdr");
|
||
break;
|
||
}
|
||
case TNUMBER:
|
||
{
|
||
//puts ("<number>\n");
|
||
#if __GNUC__
|
||
puts (itoa (VALUE (x)));
|
||
#else
|
||
int i;
|
||
i = VALUE (x);
|
||
i = i + 48;
|
||
putchar (i);
|
||
#endif
|
||
break;
|
||
}
|
||
case TPAIR:
|
||
{
|
||
//puts ("<pair>\n");
|
||
//if (cont != cell_f) puts "(");
|
||
puts ("(");
|
||
if (x && x != cell_nil) display_ (CAR (x));
|
||
if (CDR (x) && CDR (x) != cell_nil)
|
||
{
|
||
#if __GNUC__
|
||
if (TYPE (CDR (x)) != TPAIR)
|
||
puts (" . ");
|
||
#else
|
||
int c;
|
||
c = CDR (x);
|
||
c = TYPE (c);
|
||
if (c != TPAIR)
|
||
puts (" . ");
|
||
#endif
|
||
display_ (CDR (x));
|
||
}
|
||
//if (cont != cell_f) puts (")");
|
||
puts (")");
|
||
break;
|
||
}
|
||
case TSPECIAL:
|
||
{
|
||
switch (x)
|
||
{
|
||
case 1: {puts ("()"); break;}
|
||
case 2: {puts ("#f"); break;}
|
||
case 3: {puts ("#t"); break;}
|
||
default:
|
||
{
|
||
#if __GNUC__
|
||
puts ("<x:");
|
||
puts (itoa (x));
|
||
puts (">");
|
||
#else
|
||
puts ("<x>");
|
||
#endif
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
case TSYMBOL:
|
||
{
|
||
switch (x)
|
||
{
|
||
case 11: {puts (" . "); break;}
|
||
case 12: {puts ("lambda"); break;}
|
||
case 13: {puts ("begin"); break;}
|
||
case 14: {puts ("if"); break;}
|
||
case 15: {puts ("quote"); break;}
|
||
case 37: {puts ("car"); break;}
|
||
case 38: {puts ("cdr"); break;}
|
||
case 39: {puts ("null?"); break;}
|
||
case 40: {puts ("eq?"); break;}
|
||
case 41: {puts ("cons"); break;}
|
||
default:
|
||
{
|
||
#if __GNUC__
|
||
puts ("<s:");
|
||
puts (itoa (x));
|
||
puts (">");
|
||
#else
|
||
puts ("<s>");
|
||
#endif
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
{
|
||
//puts ("<default>\n");
|
||
#if __GNUC__
|
||
puts ("<");
|
||
puts (itoa (TYPE (x)));
|
||
puts (":");
|
||
puts (itoa (x));
|
||
puts (">");
|
||
#else
|
||
puts ("_");
|
||
#endif
|
||
break;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
SCM
|
||
bload_env (SCM a) ///((internal))
|
||
{
|
||
puts ("reading: ");
|
||
char *mo = "module/mes/tiny-0-32.mo";
|
||
puts (mo);
|
||
puts ("\n");
|
||
__stdin = open (mo, 0);
|
||
if (__stdin < 0) {eputs ("no such file: module/mes/tiny-0-32.mo\n");return 1;}
|
||
|
||
// BOOM
|
||
//char *p = arena;
|
||
char *p = (char*)g_cells;
|
||
int c;
|
||
|
||
c = getchar ();
|
||
putchar (c);
|
||
if (c != 'M') exit (10);
|
||
c = getchar ();
|
||
putchar (c);
|
||
if (c != 'E') exit (11);
|
||
c = getchar ();
|
||
putchar (c);
|
||
if (c != 'S') exit (12);
|
||
puts (" *GOT MES*\n");
|
||
|
||
// skip stack
|
||
getchar ();
|
||
getchar ();
|
||
|
||
int i = 0;
|
||
c = getchar ();
|
||
while (c != -1)
|
||
{
|
||
i++;
|
||
eputs (itoa (i));
|
||
eputs (": ");
|
||
eputs (itoa (c));
|
||
eputs ("\n");
|
||
*p++ = c;
|
||
c = getchar ();
|
||
}
|
||
|
||
puts ("read done\n");
|
||
display_ (10);
|
||
|
||
puts ("\n");
|
||
return r2;
|
||
}
|
||
|
||
int
|
||
main (int argc, char *argv[])
|
||
{
|
||
fill ();
|
||
char *p = arena;
|
||
puts (p);
|
||
puts ("\n");
|
||
display_ (10);
|
||
puts ("\n");
|
||
SCM program = bload_env (r0);
|
||
|
||
return 0;
|
||
}
|