72cb975213
Throughout, make these changes Copyright headers: GNU Mes First mention of name: GNU Mes Website: https://www.gnu.org/software/mes Git: git://git.savannah.gnu.org/mes.git
873 lines
16 KiB
C
873 lines
16 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if POSIX
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#error "POSIX not supported"
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#endif
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#include <stdio.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libmes.h>
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char arena[2000];
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typedef int SCM;
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int g_debug = 0;
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int g_free = 0;
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SCM g_continuations = 0;
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SCM g_symbols = 0;
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SCM g_stack = 0;
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SCM r0 = 0; // a/env
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SCM r1 = 0; // param 1
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SCM r2 = 0; // save 2+load/dump
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SCM r3 = 0; // continuation
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enum type_t {TCHAR, TCLOSURE, TCONTINUATION, TFUNCTION, TKEYWORD, TMACRO, TNUMBER, TPAIR, TREF, TSPECIAL, TSTRING, TSYMBOL, TVALUES, TVECTOR, TBROKEN_HEART};
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struct scm {
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enum type_t type;
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SCM car;
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SCM cdr;
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};
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struct function {
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int (*function) (void);
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int arity;
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char *name;
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};
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#if __MESC__
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struct scm *g_cells = arena;
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#else
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struct scm *g_cells = (struct scm*)arena;
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#endif
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#define cell_nil 1
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#define cell_f 2
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#define cell_t 3
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#define cell_dot 4
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// #define cell_arrow 5
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#define cell_undefined 6
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#define cell_unspecified 7
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#define cell_closure 8
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#define cell_circular 9
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#define cell_begin 10
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#define cell_symbol_dot 11
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#define cell_symbol_lambda 12
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#define cell_symbol_begin 13
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#define cell_symbol_if 14
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#define cell_symbol_quote 15
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#define cell_symbol_set_x 16
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#define cell_vm_apply 45
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#define cell_vm_apply2 46
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#define cell_vm_eval 47
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#define cell_vm_begin 56
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//#define cell_vm_begin_read_input_file 57
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#define cell_vm_begin2 58
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#define cell_vm_return 63
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SCM tmp;
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SCM tmp_num;
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SCM tmp_num2;
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int ARENA_SIZE = 200;
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struct function g_functions[5];
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int g_function = 0;
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SCM make_cell_ (SCM type, SCM car, SCM cdr);
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struct function fun_make_cell_ = {&make_cell_,3,"core:make-cell"};
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struct scm scm_make_cell_ = {TFUNCTION,0,0};
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//, "core:make-cell", 0};
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SCM cell_make_cell_;
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SCM cons (SCM x, SCM y);
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struct function fun_cons = {&cons,2,"cons"};
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struct scm scm_cons = {TFUNCTION,0,0};
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// "cons", 0};
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SCM cell_cons;
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SCM car (SCM x);
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struct function fun_car = {&car,1,"car"};
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struct scm scm_car = {TFUNCTION,0,0};
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// "car", 0};
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SCM cell_car;
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SCM cdr (SCM x);
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struct function fun_cdr = {&cdr,1,"cdr"};
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struct scm scm_cdr = {TFUNCTION,0,0};
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// "cdr", 0};
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SCM cell_cdr;
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// SCM eq_p (SCM x, SCM y);
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// struct function fun_eq_p = {&eq_p,2,"eq?"};
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// scm scm_eq_p = {TFUNCTION,0,0};
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// SCM cell_eq_p;
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#define TYPE(x) (g_cells[x].type)
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#define CAR(x) g_cells[x].car
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#define LENGTH(x) g_cells[x].car
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#define STRING(x) g_cells[x].car
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#define CDR(x) g_cells[x].cdr
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#define CONTINUATION(x) g_cells[x].cdr
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#define FUNCTION(x) g_functions[g_cells[x].cdr]
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#define VALUE(x) g_cells[x].cdr
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#define VECTOR(x) g_cells[x].cdr
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#define MAKE_CHAR(n) make_cell_ (tmp_num_ (TCHAR), 0, tmp_num2_ (n))
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#define MAKE_NUMBER(n) make_cell_ (tmp_num_ (TNUMBER), 0, tmp_num2_ (n))
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#define CAAR(x) CAR (CAR (x))
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#define CADAR(x) CAR (CDR (CAR (x)))
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#define CDADAR(x) CAR (CDR (CAR (CDR (x))))
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#define CADR(x) CAR (CDR (x))
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#define MAKE_STRING(x) make_cell_ (tmp_num_ (TSTRING), x, 0)
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SCM
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alloc (int n)
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{
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assert (g_free + n < ARENA_SIZE);
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SCM x = g_free;
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g_free += n;
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return x;
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}
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SCM
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make_cell_ (SCM type, SCM car, SCM cdr)
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{
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SCM x = alloc (1);
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assert (TYPE (type) == TNUMBER);
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TYPE (x) = VALUE (type);
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if (VALUE (type) == TCHAR || VALUE (type) == TNUMBER) {
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if (car) CAR (x) = CAR (car);
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if (cdr) CDR(x) = CDR(cdr);
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}
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else if (VALUE (type) == TFUNCTION) {
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if (car) CAR (x) = car;
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if (cdr) CDR(x) = CDR(cdr);
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}
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else {
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CAR (x) = car;
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CDR(x) = cdr;
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}
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return x;
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}
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SCM
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tmp_num_ (int x)
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{
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VALUE (tmp_num) = x;
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return tmp_num;
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}
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SCM
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tmp_num2_ (int x)
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{
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VALUE (tmp_num2) = x;
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return tmp_num2;
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}
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SCM
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cons (SCM x, SCM y)
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{
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VALUE (tmp_num) = TPAIR;
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return make_cell_ (tmp_num, x, y);
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}
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SCM
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car (SCM x)
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{
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return CAR (x);
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}
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SCM
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cdr (SCM x)
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{
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return CDR(x);
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}
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SCM
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gc_push_frame ()
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{
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SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cell_nil))));
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g_stack = cons (frame, g_stack);
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return g_stack;
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}
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SCM
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append2 (SCM x, SCM y)
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{
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if (x == cell_nil) return y;
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assert (TYPE (x) == TPAIR);
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return cons (car (x), append2 (cdr (x), y));
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}
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SCM
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pairlis (SCM x, SCM y, SCM a)
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{
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if (x == cell_nil)
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return a;
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if (TYPE (x) != TPAIR)
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return cons (cons (x, y), a);
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return cons (cons (car (x), car (y)),
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pairlis (cdr (x), cdr (y), a));
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}
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SCM
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assq (SCM x, SCM a)
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{
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while (a != cell_nil && x == CAAR (a)) a = CDR (a);
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return a != cell_nil ? car (a) : cell_f;
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}
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SCM
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push_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
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{
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puts ("push cc\n");
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SCM x = r3;
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r3 = c;
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r2 = p2;
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gc_push_frame ();
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r1 = p1;
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r0 = a;
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r3 = x;
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return cell_unspecified;
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}
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SCM caar (SCM x) {return car (car (x));}
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SCM cadr (SCM x) {return car (cdr (x));}
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SCM cdar (SCM x) {return cdr (car (x));}
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SCM cddr (SCM x) {return cdr (cdr (x));}
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#if __GNUC__
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//FIXME
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SCM call (SCM,SCM);
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SCM gc_pop_frame ();
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#endif
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SCM
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eval_apply ()
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{
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eval_apply:
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switch (r3)
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{
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case cell_vm_apply: {goto apply;}
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case cell_unspecified: {return r1;}
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}
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SCM x = cell_nil;
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SCM y = cell_nil;
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apply:
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switch (TYPE (car (r1)))
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{
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case TFUNCTION: {
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puts ("apply.function\n");
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r1 = call (car (r1), cdr (r1));
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goto vm_return;
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}
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}
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vm_return:
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x = r1;
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gc_pop_frame ();
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r1 = x;
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goto eval_apply;
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}
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SCM
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call (SCM fn, SCM x)
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{
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puts ("call\n");
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if ((FUNCTION (fn).arity > 0 || FUNCTION (fn).arity == -1)
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&& x != cell_nil && TYPE (CAR (x)) == TVALUES)
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x = cons (CADAR (x), CDR (x));
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if ((FUNCTION (fn).arity > 1 || FUNCTION (fn).arity == -1)
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&& x != cell_nil && TYPE (CDR (x)) == TPAIR && TYPE (CADR (x)) == TVALUES)
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x = cons (CAR (x), cons (CDADAR (x), CDR (x)));
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switch (FUNCTION (fn).arity)
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{
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case 0: {return (FUNCTION (fn).function) ();}
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case 1: {return ((SCM(*)(SCM))(FUNCTION (fn).function)) (car (x));}
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case 2: {return ((SCM(*)(SCM,SCM))(FUNCTION (fn).function)) (car (x), cadr (x));}
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case 3: {return ((SCM(*)(SCM,SCM,SCM))(FUNCTION (fn).function)) (car (x), cadr (x), car (cddr (x)));}
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case -1: {return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);}
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}
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return cell_unspecified;
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}
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SCM
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gc_peek_frame ()
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{
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SCM frame = car (g_stack);
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r1 = car (frame);
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r2 = cadr (frame);
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r3 = car (cddr (frame));
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r0 = cadr (cddr (frame));
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return frame;
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}
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SCM
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gc_pop_frame ()
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{
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SCM frame = gc_peek_frame (g_stack);
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g_stack = cdr (g_stack);
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return frame;
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}
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SCM
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mes_g_stack (SCM a) ///((internal))
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{
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r0 = a;
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r1 = MAKE_CHAR (0);
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r2 = MAKE_CHAR (0);
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r3 = MAKE_CHAR (0);
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g_stack = cons (cell_nil, cell_nil);
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return r0;
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}
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// Environment setup
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SCM
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make_tmps (struct scm* cells)
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{
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tmp = g_free++;
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cells[tmp].type = TCHAR;
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tmp_num = g_free++;
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cells[tmp_num].type = TNUMBER;
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tmp_num2 = g_free++;
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cells[tmp_num2].type = TNUMBER;
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return 0;
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}
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SCM
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make_symbol_ (SCM s)
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{
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VALUE (tmp_num) = TSYMBOL;
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SCM x = make_cell_ (tmp_num, s, 0);
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g_symbols = cons (x, g_symbols);
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return x;
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}
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SCM
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make_symbol (SCM s)
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{
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SCM x = 0;
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return x ? x : make_symbol_ (s);
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}
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SCM
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acons (SCM key, SCM value, SCM alist)
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{
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return cons (cons (key, value), alist);
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}
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// Jam Collector
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SCM g_symbol_max;
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SCM
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gc_init_cells ()
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{
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return 0;
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}
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// INIT NEWS
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SCM
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mes_symbols () ///((internal))
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{
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gc_init_cells ();
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// gc_init_news ();
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#if __GNUC__ && 0
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//#include "mes.symbols.i"
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#else
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g_free++;
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// g_cells[cell_nil] = scm_nil;
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g_free++;
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// g_cells[cell_f] = scm_f;
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g_free++;
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// g_cells[cell_t] = scm_t;
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g_free++;
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// g_cells[cell_dot] = scm_dot;
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g_free++;
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// g_cells[cell_arrow] = scm_arrow;
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g_free++;
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// g_cells[cell_undefined] = scm_undefined;
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g_free++;
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// g_cells[cell_unspecified] = scm_unspecified;
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g_free++;
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// g_cells[cell_closure] = scm_closure;
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g_free++;
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// g_cells[cell_circular] = scm_circular;
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g_free++;
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// g_cells[cell_begin] = scm_begin;
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///
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g_free = 44;
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g_free++;
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// g_cells[cell_vm_apply] = scm_vm_apply;
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g_free++;
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// g_cells[cell_vm_apply2] = scm_vm_apply2;
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g_free++;
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// g_cells[cell_vm_eval] = scm_vm_eval;
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///
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g_free = 55;
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g_free++;
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// g_cells[cell_vm_begin] = scm_vm_begin;
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g_free++;
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// g_cells[cell_vm_begin_read_input_file] = scm_vm_begin_read_input_file;
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g_free++;
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// g_cells[cell_vm_begin2] = scm_vm_begin2;
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///
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g_free = 62;
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g_free++;
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// g_cells[cell_vm_return] = scm_vm_return;
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#endif
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g_symbol_max = g_free;
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make_tmps (g_cells);
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g_symbols = 0;
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for (int i=1; i<g_symbol_max; i++)
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g_symbols = cons (i, g_symbols);
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SCM a = cell_nil;
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a = acons (cell_symbol_dot, cell_dot, a);
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a = acons (cell_symbol_begin, cell_begin, a);
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a = acons (cell_closure, a, a);
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return a;
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}
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SCM
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make_closure (SCM args, SCM body, SCM a)
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{
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return make_cell_ (tmp_num_ (TCLOSURE), cell_f, cons (cons (cell_circular, a), cons (args, body)));
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}
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SCM
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mes_environment () ///((internal))
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{
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SCM a = 0;
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a = mes_symbols ();
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a = mes_g_stack (a);
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return a;
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}
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SCM
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mes_builtins (SCM a)
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{
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#if 0
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//__GNUC__
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//#include "mes.i"
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// #include "lib.i"
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// #include "math.i"
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// #include "posix.i"
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// #include "reader.i"
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// #include "lib.environment.i"
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// #include "math.environment.i"
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// #include "mes.environment.i"
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// #include "posix.environment.i"
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// #include "reader.environment.i"
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#else
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scm_make_cell_.cdr = g_function;
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g_functions[g_function++] = fun_make_cell_;
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cell_make_cell_ = g_free++;
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g_cells[cell_make_cell_] = scm_make_cell_;
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scm_cons.cdr = g_function;
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g_functions[g_function++] = fun_cons;
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cell_cons = g_free++;
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g_cells[cell_cons] = scm_cons;
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scm_car.cdr = g_function;
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g_functions[g_function++] = fun_car;
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cell_car = g_free++;
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g_cells[cell_car] = scm_car;
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scm_cdr.cdr = g_function;
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g_functions[g_function++] = fun_cdr;
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cell_cdr = g_free++;
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g_cells[cell_cdr] = scm_cdr;
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#endif
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return a;
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}
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SCM
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bload_env (SCM a) ///((internal))
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{
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g_stdin = open ("module/mes/read-0.mo", 0);
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char *p = (char*)g_cells;
|
||
assert (getchar () == 'M');
|
||
assert (getchar () == 'E');
|
||
assert (getchar () == 'S');
|
||
g_stack = getchar () << 8;
|
||
g_stack += getchar ();
|
||
int c = getchar ();
|
||
while (c != EOF)
|
||
{
|
||
*p++ = c;
|
||
c = getchar ();
|
||
}
|
||
g_free = (p-(char*)g_cells) / sizeof (struct scm);
|
||
gc_peek_frame ();
|
||
g_symbols = r1;
|
||
g_stdin = STDIN;
|
||
r0 = mes_builtins (r0);
|
||
return r2;
|
||
}
|
||
|
||
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;
|
||
|
||
// (cons 0 1)
|
||
TYPE (10) = TPAIR;
|
||
CAR (10) = 11;
|
||
CDR (10) = 12;
|
||
|
||
TYPE (11) = TFUNCTION;
|
||
CAR (11) = 0x58585858;
|
||
// 0 = make_cell_
|
||
// 1 = cons
|
||
// 2 = car
|
||
CDR (11) = 1;
|
||
|
||
TYPE (12) = TPAIR;
|
||
CAR (12) = 13;
|
||
//CDR (12) = 1;
|
||
CDR (12) = 14;
|
||
|
||
TYPE (13) = TNUMBER;
|
||
CAR (13) = 0x58585858;
|
||
CDR (13) = 0;
|
||
|
||
TYPE (14) = TPAIR;
|
||
CAR (14) = 15;
|
||
CDR (14) = 1;
|
||
|
||
TYPE (15) = TNUMBER;
|
||
CAR (15) = 0x58585858;
|
||
CDR (15) = 1;
|
||
|
||
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
|
||
simple_bload_env (SCM a) ///((internal))
|
||
{
|
||
puts ("reading: ");
|
||
char *mo = "module/mes/tiny-0-32.mo";
|
||
puts (mo);
|
||
puts ("\n");
|
||
g_stdin = open (mo, 0);
|
||
if (g_stdin < 0) {eputs ("no such file: module/mes/tiny-0-32.mo\n");return 1;}
|
||
|
||
char *p = (char*)g_cells;
|
||
int c;
|
||
|
||
assert (getchar () == 'M');
|
||
assert (getchar () == 'E');
|
||
assert (getchar () == 'S');
|
||
puts (" *GOT MES*\n");
|
||
|
||
g_stack = getchar () << 8;
|
||
g_stack += getchar ();
|
||
|
||
puts ("stack: ");
|
||
puts (itoa (g_stack));
|
||
puts ("\n");
|
||
|
||
c = getchar ();
|
||
while (c != -1)
|
||
{
|
||
*p++ = c;
|
||
c = getchar ();
|
||
}
|
||
|
||
puts ("read done\n");
|
||
|
||
g_free = (p-(char*)g_cells) / sizeof (struct scm);
|
||
|
||
if (g_free != 15) exit (33);
|
||
|
||
g_symbols = 1;
|
||
|
||
g_stdin = STDIN;
|
||
r0 = mes_builtins (r0);
|
||
|
||
if (g_free != 19) exit (34);
|
||
|
||
puts ("cells read: ");
|
||
puts (itoa (g_free));
|
||
puts ("\n");
|
||
|
||
puts ("symbols: ");
|
||
puts (itoa (g_symbols));
|
||
puts ("\n");
|
||
// display_ (g_symbols);
|
||
// puts ("\n");
|
||
|
||
display_ (10);
|
||
puts ("\n");
|
||
|
||
fill ();
|
||
r2 = 10;
|
||
|
||
if (TYPE (12) != TPAIR)
|
||
exit (33);
|
||
|
||
puts ("program[");
|
||
puts (itoa (r2));
|
||
puts ("]: ");
|
||
|
||
display_ (r2);
|
||
//display_ (14);
|
||
puts ("\n");
|
||
|
||
r0 = 1;
|
||
//r2 = 10;
|
||
return r2;
|
||
}
|
||
|
||
int
|
||
main (int argc, char *argv[])
|
||
{
|
||
puts ("Hello cons-mes!\n");
|
||
if (argc > 1 && !strcmp (argv[1], "--help")) return eputs ("Usage: mes [--dump|--load] < FILE");
|
||
#if __GNUC__
|
||
if (argc > 1 && !strcmp (argv[1], "--version")) {eputs ("Mes ");return eputs (VERSION);};
|
||
#else
|
||
if (argc > 1 && !strcmp (argv[1], "--version")) {eputs ("Mes ");return eputs ("0.4");};
|
||
#endif
|
||
g_stdin = STDIN;
|
||
|
||
r0 = mes_environment ();
|
||
|
||
SCM program = simple_bload_env (r0);
|
||
|
||
puts ("g_free=");
|
||
puts (itoa(g_free));
|
||
puts ("\n");
|
||
|
||
push_cc (r2, cell_unspecified, r0, cell_unspecified);
|
||
|
||
puts ("g_free=");
|
||
puts (itoa(g_free));
|
||
puts ("\n");
|
||
|
||
puts ("g_stack=");
|
||
puts (itoa(g_stack));
|
||
puts ("\n");
|
||
|
||
puts ("r0=");
|
||
puts (itoa(r0));
|
||
puts ("\n");
|
||
|
||
puts ("r1=");
|
||
puts (itoa(r1));
|
||
puts ("\n");
|
||
|
||
puts ("r2=");
|
||
puts (itoa(r2));
|
||
puts ("\n");
|
||
|
||
puts ("r3=");
|
||
puts (itoa(r3));
|
||
puts ("\n");
|
||
|
||
r3 = cell_vm_apply;
|
||
r1 = eval_apply ();
|
||
display_ (r1);
|
||
|
||
eputs ("\n");
|
||
return 0;
|
||
}
|
||
|