1 /* -*-comment-start: "//";comment-end:""-*-
2 * Mes --- Maxwell Equations of Software
3 * Copyright © 2016,2017,2018 Jan Nieuwenhuizen <janneke@gnu.org>
5 * This file is part of Mes.
7 * Mes is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or (at
10 * your option) any later version.
12 * Mes is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Mes. If not, see <http://www.gnu.org/licenses/>.
28 int ARENA_SIZE = 10000000;
30 int ARENA_SIZE = 100000;
32 int MAX_ARENA_SIZE = 20000000;
42 SCM g_continuations = 0;
54 enum type_t {TCHAR, TCLOSURE, TCONTINUATION, TFUNCTION, TKEYWORD, TMACRO, TNUMBER, TPAIR, TREF, TSPECIAL, TSTRING, TSYMBOL, TVALUES, TVECTOR, TBROKEN_HEART};
63 int (*function) (void);
68 typedef SCM (*function0_t) (void);
69 typedef SCM (*function1_t) (SCM);
70 typedef SCM (*function2_t) (SCM, SCM);
71 typedef SCM (*function3_t) (SCM, SCM, SCM);
72 typedef SCM (*functionn_t) (SCM);
75 function0_t function0;
76 function1_t function1;
77 function2_t function2;
78 function3_t function3;
79 functionn_t functionn;
109 struct scm *g_cells = foobar;
110 struct scm *g_news = foobar;
112 struct scm *g_cells = 0;
113 struct scm *g_news = 0;
116 struct scm scm_nil = {TSPECIAL, "()",0};
117 struct scm scm_f = {TSPECIAL, "#f",0};
118 struct scm scm_t = {TSPECIAL, "#t",0};
119 struct scm scm_dot = {TSPECIAL, ".",0};
120 struct scm scm_arrow = {TSPECIAL, "=>",0};
121 struct scm scm_undefined = {TSPECIAL, "*undefined*",0};
122 struct scm scm_unspecified = {TSPECIAL, "*unspecified*",0};
123 struct scm scm_closure = {TSPECIAL, "*closure*",0};
124 struct scm scm_circular = {TSPECIAL, "*circular*",0};
125 struct scm scm_begin = {TSPECIAL, "*begin*",0};
127 struct scm scm_symbol_dot = {TSYMBOL, "*dot*",0};
128 struct scm scm_symbol_lambda = {TSYMBOL, "lambda",0};
129 struct scm scm_symbol_begin = {TSYMBOL, "begin",0};
130 struct scm scm_symbol_if = {TSYMBOL, "if",0};
131 struct scm scm_symbol_quote = {TSYMBOL, "quote",0};
132 #if 1 //MES_C_DEFINE // snarfing makes these always needed for linking
133 struct scm scm_symbol_define = {TSYMBOL, "define",0};
134 struct scm scm_symbol_define_macro = {TSYMBOL, "define-macro",0};
137 #if 1 //MES_C_READER // snarfing makes these always needed for linking
138 struct scm scm_symbol_quasiquote = {TSYMBOL, "quasiquote", 0};
139 struct scm scm_symbol_unquote = {TSYMBOL, "unquote", 0};
140 struct scm scm_symbol_unquote_splicing = {TSYMBOL, "unquote-splicing", 0};
141 struct scm scm_symbol_syntax = {TSYMBOL, "syntax",0};
142 struct scm scm_symbol_quasisyntax = {TSYMBOL, "quasisyntax", 0};
143 struct scm scm_symbol_unsyntax = {TSYMBOL, "unsyntax", 0};
144 struct scm scm_symbol_unsyntax_splicing = {TSYMBOL, "unsyntax-splicing", 0};
145 #endif // MES_C_READER
147 struct scm scm_symbol_set_x = {TSYMBOL, "set!",0};
149 struct scm scm_symbol_sc_expand = {TSYMBOL, "sc-expand",0};
150 struct scm scm_symbol_macro_expand = {TSYMBOL, "macro-expand",0};
151 struct scm scm_symbol_sc_expander_alist = {TSYMBOL, "*sc-expander-alist*",0};
153 struct scm scm_symbol_call_with_values = {TSYMBOL, "call-with-values",0};
154 struct scm scm_call_with_current_continuation = {TSPECIAL, "*call/cc*",0};
155 struct scm scm_symbol_call_with_current_continuation = {TSYMBOL, "call-with-current-continuation",0};
156 struct scm scm_symbol_current_module = {TSYMBOL, "current-module",0};
157 struct scm scm_symbol_primitive_load = {TSYMBOL, "primitive-load",0};
158 struct scm scm_symbol_read_input_file = {TSYMBOL, "read-input-file",0};
159 struct scm scm_symbol_write = {TSYMBOL, "write",0};
160 struct scm scm_symbol_display = {TSYMBOL, "display",0};
162 struct scm scm_symbol_throw = {TSYMBOL, "throw",0};
163 struct scm scm_symbol_not_a_pair = {TSYMBOL, "not-a-pair",0};
164 struct scm scm_symbol_system_error = {TSYMBOL, "system-error",0};
165 struct scm scm_symbol_wrong_number_of_args = {TSYMBOL, "wrong-number-of-args",0};
166 struct scm scm_symbol_wrong_type_arg = {TSYMBOL, "wrong-type-arg",0};
167 struct scm scm_symbol_unbound_variable = {TSYMBOL, "unbound-variable",0};
169 struct scm scm_symbol_argv = {TSYMBOL, "%argv",0};
170 struct scm scm_symbol_mes_prefix = {TSYMBOL, "%prefix",0};
171 struct scm scm_symbol_mes_version = {TSYMBOL, "%version",0};
173 struct scm scm_symbol_car = {TSYMBOL, "car",0};
174 struct scm scm_symbol_cdr = {TSYMBOL, "cdr",0};
175 struct scm scm_symbol_null_p = {TSYMBOL, "null?",0};
176 struct scm scm_symbol_eq_p = {TSYMBOL, "eq?",0};
177 struct scm scm_symbol_cons = {TSYMBOL, "cons",0};
179 struct scm scm_vm_evlis = {TSPECIAL, "*vm-evlis*",0};
180 struct scm scm_vm_evlis2 = {TSPECIAL, "*vm-evlis2*",0};
181 struct scm scm_vm_evlis3 = {TSPECIAL, "*vm-evlis3*",0};
182 struct scm scm_vm_apply = {TSPECIAL, "core:apply",0};
183 struct scm scm_vm_apply2 = {TSPECIAL, "*vm-apply2*",0};
184 struct scm scm_vm_eval = {TSPECIAL, "core:eval",0};
186 //MES_FIXED_PRIMITIVES
187 struct scm scm_vm_eval_car = {TSPECIAL, "*vm-eval-car*",0};
188 struct scm scm_vm_eval_cdr = {TSPECIAL, "*vm-eval-cdr*",0};
189 struct scm scm_vm_eval_cons = {TSPECIAL, "*vm-eval-cons*",0};
190 struct scm scm_vm_eval_null_p = {TSPECIAL, "*vm-eval-null-p*",0};
191 #if 1 //MES_C_DEFINE // snarfing makes these always needed for linking
192 struct scm scm_vm_eval_define = {TSPECIAL, "*vm-eval-define*",0};
195 struct scm scm_vm_eval_set_x = {TSPECIAL, "*vm-eval-set!*",0};
196 struct scm scm_vm_eval_macro = {TSPECIAL, "*vm-eval-macro*",0};
197 struct scm scm_vm_eval_check_func = {TSPECIAL, "*vm-eval-check-func*",0};
198 struct scm scm_vm_eval2 = {TSPECIAL, "*vm-eval2*",0};
199 struct scm scm_vm_macro_expand = {TSPECIAL, "core:macro-expand",0};
200 struct scm scm_vm_begin = {TSPECIAL, "*vm-begin*",0};
201 struct scm scm_vm_begin_read_input_file = {TSPECIAL, "*vm-begin-read-input-file*",0};
202 struct scm scm_vm_begin2 = {TSPECIAL, "*vm-begin2*",0};
203 struct scm scm_vm_if = {TSPECIAL, "*vm-if*",0};
204 struct scm scm_vm_if_expr = {TSPECIAL, "*vm-if-expr*",0};
205 struct scm scm_vm_call_with_values2 = {TSPECIAL, "*vm-call-with-values2*",0};
206 struct scm scm_vm_call_with_current_continuation2 = {TSPECIAL, "*vm-call-with-current-continuation2*",0};
207 struct scm scm_vm_return = {TSPECIAL, "*vm-return*",0};
209 struct scm scm_symbol_gnuc = {TSYMBOL, "%gnuc",0};
210 struct scm scm_symbol_mesc = {TSYMBOL, "%mesc",0};
211 struct scm scm_symbol_c_reader = {TSYMBOL, "%c-reader",0};
212 struct scm scm_symbol_c_define = {TSYMBOL, "%c-define",0};
214 struct scm scm_test = {TSYMBOL, "test",0};
217 #include "mes.mes.symbols.h"
219 #include "mes.symbols.h"
226 struct function g_functions[200];
229 #if !__GNUC__ || !_POSIX_SOURCE
232 #include "math.mes.h"
234 #include "posix.mes.h"
235 #include "reader.mes.h"
236 #include "vector.mes.h"
247 #define TYPE(x) g_cells[x].type
248 #define CAR(x) g_cells[x].car
249 #define CDR(x) g_cells[x].cdr
251 #define NTYPE(x) g_news[x].type
252 #define NCAR(x) g_news[x].car
253 #define NCDR(x) g_news[x].cdr
256 #define LENGTH(x) g_cells[x].car
257 #define REF(x) g_cells[x].car
258 #define STRING(x) g_cells[x].car
260 #define CLOSURE(x) g_cells[x].cdr
261 #define CONTINUATION(x) g_cells[x].cdr
263 #define FUNCTION(x) g_functions[g_cells[x].cdr]
264 #define MACRO(x) g_cells[x].cdr
265 #define VALUE(x) g_cells[x].cdr
266 #define VECTOR(x) g_cells[x].cdr
268 #define NLENGTH(x) g_news[x].car
270 #define NVALUE(x) g_news[x].cdr
271 #define NVECTOR(x) g_news[x].cdr
274 #define CONTINUATION(x) g_cells[x].cdr
275 #define HITS(x) g_cells[x].hits
276 #define LENGTH(x) g_cells[x].length
277 #define NAME(x) g_cells[x].name
278 #define STRING(x) g_cells[x].string
279 #define CLOSURE(x) g_cells[x].closure
280 #define MACRO(x) g_cells[x].macro
281 #define REF(x) g_cells[x].ref
282 #define VALUE(x) g_cells[x].value
283 #define VECTOR(x) g_cells[x].vector
284 #define FUNCTION(x) g_functions[g_cells[x].function]
286 #define NLENGTH(x) g_news[x].length
288 #define NVALUE(x) g_news[x].value
289 #define NVECTOR(x) g_news[x].vector
292 #define MAKE_CHAR(n) make_cell_ (tmp_num_ (TCHAR), 0, tmp_num2_ (n))
293 #define MAKE_CONTINUATION(n) make_cell_ (tmp_num_ (TCONTINUATION), n, g_stack)
294 #define MAKE_NUMBER(n) make_cell_ (tmp_num_ (TNUMBER), 0, tmp_num2_ (n))
295 #define MAKE_REF(n) make_cell_ (tmp_num_ (TREF), n, 0)
296 #define MAKE_STRING(x) make_cell_ (tmp_num_ (TSTRING), x, 0)
298 #define MAKE_KEYWORD(x) make_cell_ (tmp_num_ (TKEYWORD), x, 0)
301 #define MAKE_MACRO(name, x) make_cell_ (tmp_num_ (TMACRO), STRING (name), x)
304 #define CAAR(x) CAR (CAR (x))
305 #define CADR(x) CAR (CDR (x))
306 #define CDAR(x) CDR (CAR (x))
307 #define CDDR(x) CDR (CDR (x))
308 #define CADAR(x) CAR (CDR (CAR (x)))
309 #define CADDR(x) CAR (CDR (CDR (x)))
310 #define CDADAR(x) CAR (CDR (CAR (CDR (x))))
315 assert (g_free + n < ARENA_SIZE);
331 VALUE (tmp_num2) = x;
336 make_cell_ (SCM type, SCM car, SCM cdr)
339 assert (TYPE (type) == TNUMBER);
340 TYPE (x) = VALUE (type);
341 if (VALUE (type) == TCHAR || VALUE (type) == TNUMBER) {
342 if (car) CAR (x) = CAR (car);
343 if (cdr) CDR(x) = CDR(cdr);
345 else if (VALUE (type) == TFUNCTION) {
346 if (car) CAR (x) = car;
347 if (cdr) CDR(x) = CDR(cdr);
357 make_symbol_ (SCM s) ///((internal))
359 VALUE (tmp_num) = TSYMBOL;
360 SCM x = make_cell_ (tmp_num, s, 0);
361 g_symbols = cons (x, g_symbols);
366 list_of_char_equal_p (SCM a, SCM b) ///((internal))
368 while (a != cell_nil && b != cell_nil && VALUE (CAR (a)) == VALUE (CAR (b))) {
369 assert (TYPE (CAR (a)) == TCHAR);
370 assert (TYPE (CAR (b)) == TCHAR);
374 return (a == cell_nil && b == cell_nil) ? cell_t : cell_f;
378 lookup_symbol_ (SCM s)
382 if (list_of_char_equal_p (STRING (CAR (x)), s) == cell_t) break;
386 if (!x) x = make_symbol_ (s);
393 return MAKE_NUMBER (TYPE (x));
399 return (TYPE (x) != TCONTINUATION
400 && (TYPE (CAR (x)) == TPAIR // FIXME: this is weird
401 || TYPE (CAR (x)) == TREF
402 || TYPE (CAR (x)) == TSPECIAL
403 || TYPE (CAR (x)) == TSYMBOL
404 || TYPE (CAR (x)) == TSTRING)) ? CAR (x) : MAKE_NUMBER (CAR (x));
410 return (TYPE (CDR (x)) == TPAIR
411 || TYPE (CDR (x)) == TREF
412 || TYPE (CAR (x)) == TSPECIAL
413 || TYPE (CDR (x)) == TSYMBOL
414 || TYPE (CDR (x)) == TSTRING) ? CDR (x) : MAKE_NUMBER (CDR (x));
420 assert (TYPE (x) == TFUNCTION);
421 return MAKE_NUMBER (FUNCTION (x).arity);
427 VALUE (tmp_num) = TPAIR;
428 return make_cell_ (tmp_num, x, y);
435 if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_symbol_car));
444 if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_symbol_cdr));
450 list (SCM x) ///((arity . n))
458 return x == cell_nil ? cell_t : cell_f;
465 || ((TYPE (x) == TKEYWORD && TYPE (y) == TKEYWORD
466 && STRING (x) == STRING (y)))
467 || (TYPE (x) == TCHAR && TYPE (y) == TCHAR
468 && VALUE (x) == VALUE (y))
469 || (TYPE (x) == TNUMBER && TYPE (y) == TNUMBER
470 && VALUE (x) == VALUE (y)))
475 values (SCM x) ///((arity . n))
483 acons (SCM key, SCM value, SCM alist)
485 return cons (cons (key, value), alist);
492 while (x != cell_nil)
495 if (TYPE (x) != TPAIR) return MAKE_NUMBER (-1);
498 return MAKE_NUMBER (n);
501 SCM apply (SCM, SCM, SCM);
504 error (SCM key, SCM x)
508 if ((throw = assq_ref_env (cell_symbol_throw, r0)) != cell_undefined)
509 return apply (throw, cons (key, cons (x, cell_nil)), r0);
511 display_error_ (key);
519 cstring_to_list (char const* s)
524 p = cons (MAKE_CHAR (s[i]), p);
530 assert_defined (SCM x, SCM e) ///((internal))
532 if (e == cell_undefined) return error (cell_symbol_unbound_variable, x);
537 check_formals (SCM f, SCM formals, SCM args) ///((internal))
539 int flen = (TYPE (formals) == TNUMBER) ? VALUE (formals) : VALUE (length (formals));
540 int alen = VALUE (length (args));
541 if (alen != flen && alen != -1 && flen != -1)
543 char *s = "apply: wrong number of arguments; expected: ";
550 SCM e = MAKE_STRING (cstring_to_list (s));
551 return error (cell_symbol_wrong_number_of_args, cons (e, f));
553 return cell_unspecified;
557 check_apply (SCM f, SCM e) ///((internal))
560 if (f == cell_f || f == cell_t) type = "bool";
561 if (f == cell_nil) type = "nil";
562 if (f == cell_unspecified) type = "*unspecified*";
563 if (f == cell_undefined) type = "*undefined*";
564 if (TYPE (f) == TCHAR) type = "char";
565 if (TYPE (f) == TNUMBER) type = "number";
566 if (TYPE (f) == TSTRING) type = "string";
570 char *s = "cannot apply: ";
576 SCM e = MAKE_STRING (cstring_to_list (s));
577 return error (cell_symbol_wrong_type_arg, cons (e, f));
579 return cell_unspecified;
583 gc_push_frame () ///((internal))
585 SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cell_nil))));
586 g_stack = cons (frame, g_stack);
591 append2 (SCM x, SCM y)
593 if (x == cell_nil) return y;
594 assert (TYPE (x) == TPAIR);
595 return cons (car (x), append2 (cdr (x), y));
599 pairlis (SCM x, SCM y, SCM a)
603 if (TYPE (x) != TPAIR)
604 return cons (cons (x, y), a);
605 return cons (cons (car (x), car (y)),
606 pairlis (cdr (x), cdr (y), a));
612 if ((FUNCTION (fn).arity > 0 || FUNCTION (fn).arity == -1)
613 && x != cell_nil && TYPE (CAR (x)) == TVALUES)
614 x = cons (CADAR (x), CDR (x));
615 if ((FUNCTION (fn).arity > 1 || FUNCTION (fn).arity == -1)
616 && x != cell_nil && TYPE (CDR (x)) == TPAIR && TYPE (CADR (x)) == TVALUES)
617 x = cons (CAR (x), cons (CDADAR (x), CDR (x)));
618 switch (FUNCTION (fn).arity)
620 #if __MESC__ || !_POSIX_SOURCE
621 case 0: return (FUNCTION (fn).function) ();
622 case 1: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (CAR (x));
623 case 2: return ((SCM(*)(SCM,SCM))(FUNCTION (fn).function)) (CAR (x), CADR (x));
624 case 3: return ((SCM(*)(SCM,SCM,SCM))(FUNCTION (fn).function)) (CAR (x), CADR (x), CAR (CDDR (x)));
625 case -1: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);
626 default: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);
628 case 0: return FUNCTION (fn).function0 ();
629 case 1: return FUNCTION (fn).function1 (CAR (x));
630 case 2: return FUNCTION (fn).function2 (CAR (x), CADR (x));
631 case 3: return FUNCTION (fn).function3 (CAR (x), CADR (x), CAR (CDDR (x)));
632 case -1: return FUNCTION (fn).functionn (x);
636 return cell_unspecified;
648 while (a != cell_nil && v != VALUE (CAAR (a))) a = CDR (a); break;
653 while (a != cell_nil && v != STRING (CAAR (a))) a = CDR (a); break;
658 while (a != cell_nil && x != CAAR (a)) a = CDR (a); break;
660 return a != cell_nil ? CAR (a) : cell_f;
664 assq_ref_env (SCM x, SCM a)
667 if (x == cell_f) return cell_undefined;
672 set_car_x (SCM x, SCM e)
674 assert (TYPE (x) == TPAIR);
676 return cell_unspecified;
680 set_cdr_x (SCM x, SCM e)
682 if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_set_cdr_x));
684 return cell_unspecified;
688 set_env_x (SCM x, SCM e, SCM a)
690 SCM p = assert_defined (x, assq (x, a));
691 if (TYPE (p) != TPAIR) error (cell_symbol_not_a_pair, cons (p, x));
692 return set_cdr_x (p, e);
696 call_lambda (SCM e, SCM x, SCM aa, SCM a) ///((internal))
698 SCM cl = cons (cons (cell_closure, x), x);
701 return cell_unspecified;
705 make_closure_ (SCM args, SCM body, SCM a) ///((internal))
707 return make_cell_ (tmp_num_ (TCLOSURE), cell_f, cons (cons (cell_circular, a), cons (args, body)));
711 lookup_macro_ (SCM x, SCM a) ///((internal))
713 if (TYPE (x) != TSYMBOL) return cell_f;
714 SCM m = assq_ref_env (x, a);
715 if (TYPE (m) == TMACRO) return MACRO (m);
720 push_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
729 return cell_unspecified;
733 gc_peek_frame () ///((internal))
735 SCM frame = CAR (g_stack);
738 r3 = CAR (CDDR (frame));
739 r0 = CADR (CDDR (frame));
744 gc_pop_frame () ///((internal))
746 SCM frame = gc_peek_frame (g_stack);
747 g_stack = CDR (g_stack);
758 case cell_vm_evlis: goto evlis;
759 case cell_vm_evlis2: goto evlis2;
760 case cell_vm_evlis3: goto evlis3;
761 case cell_vm_apply: goto apply;
762 case cell_vm_apply2: goto apply2;
763 case cell_vm_eval: goto eval;
764 #if MES_FIXED_PRIMITIVES
765 case cell_vm_eval_car: goto eval_car;
766 case cell_vm_eval_cdr: goto eval_cdr;
767 case cell_vm_eval_cons: goto eval_cons;
768 case cell_vm_eval_null_p: goto eval_null_p;
771 case cell_vm_eval_define: goto eval_define;
773 case cell_vm_eval_set_x: goto eval_set_x;
774 case cell_vm_eval_macro: goto eval_macro;
775 case cell_vm_eval_check_func: goto eval_check_func;
776 case cell_vm_eval2: goto eval2;
777 case cell_vm_macro_expand: goto macro_expand;
778 case cell_vm_begin: goto begin;
779 case cell_vm_begin_read_input_file: goto begin_read_input_file;
780 case cell_vm_begin2: goto begin2;
781 case cell_vm_if: goto vm_if;
782 case cell_vm_if_expr: goto if_expr;
783 case cell_vm_call_with_current_continuation2: goto call_with_current_continuation2;
784 case cell_vm_call_with_values2: goto call_with_values2;
785 case cell_vm_return: goto vm_return;
786 case cell_unspecified: return r1;
794 if (r1 == cell_nil) goto vm_return;
795 if (TYPE (r1) != TPAIR) goto eval;
796 push_cc (CAR (r1), r1, r0, cell_vm_evlis2);
799 push_cc (CDR (r2), r1, r0, cell_vm_evlis3);
807 switch (TYPE (CAR (r1)))
810 check_formals (CAR (r1), MAKE_NUMBER (FUNCTION (CAR (r1)).arity), CDR (r1));
811 r1 = call (CAR (r1), CDR (r1)); /// FIXME: move into eval_apply
816 SCM cl = CLOSURE (CAR (r1));
817 SCM formals = CADR (cl);
818 SCM body = CDDR (cl);
821 check_formals (CAR (r1), formals, CDR (r1));
822 SCM p = pairlis (formals, CDR (r1), aa);
823 call_lambda (body, p, aa, r0);
829 g_stack = CONTINUATION (CAR (r1));
840 push_cc (cons (CADR (r1), CADDR (r1)), r1, r0, cell_vm_return);
845 push_cc (CADR (r1), r1, CADDR (r1), cell_vm_return);
848 case cell_call_with_current_continuation:
851 goto call_with_current_continuation;
853 default: check_apply (cell_f, CAR (r1));
858 if (CAR (r1) == cell_symbol_call_with_values)
861 goto call_with_values;
863 if (CAR (r1) == cell_symbol_current_module)
874 case cell_symbol_lambda:
876 SCM formals = CADR (CAR (r1));
877 SCM body = CDDR (CAR (r1));
878 SCM p = pairlis (formals, CDR (r1), r0);
879 check_formals (r1, formals, CDR (r1));
880 call_lambda (body, p, p, r0);
886 push_cc (CAR (r1), r1, r0, cell_vm_apply2);
889 check_apply (r1, CAR (r2));
890 r1 = cons (r1, CDR (r2));
901 #if MES_FIXED_PRIMITIVES
902 case cell_symbol_car:
904 push_cc (CADR (r1), r1, r0, cell_vm_eval_car); goto eval;
906 x = r1; gc_pop_frame (); r1 = CAR (x); goto eval_apply;
908 case cell_symbol_cdr:
910 push_cc (CADR (r1), r1, r0, cell_vm_eval_cdr); goto eval;
912 x = r1; gc_pop_frame (); r1 = CDR (x); goto eval_apply;
914 case cell_symbol_cons: {
915 push_cc (CDR (r1), r1, r0, cell_vm_eval_cons); goto evlis;
919 r1 = cons (CAR (x), CADR (x));
922 case cell_symbol_null_p:
924 push_cc (CADR (r1), r1, r0, cell_vm_eval_null_p);
927 x = r1; gc_pop_frame (); r1 = null_p (x); goto eval_apply;
929 #endif // MES_FIXED_PRIMITIVES
930 case cell_symbol_quote:
932 x = r1; gc_pop_frame (); r1 = CADR (x); goto eval_apply;
934 case cell_symbol_begin: goto begin;
935 case cell_symbol_lambda:
937 r1 = make_closure_ (CADR (r1), CDDR (r1), assq (cell_closure, r0));
940 case cell_symbol_if: {r1=CDR (r1); goto vm_if;}
941 case cell_symbol_set_x:
943 push_cc (CAR (CDDR (r1)), r1, r0, cell_vm_eval_set_x);
947 r1 = set_env_x (CADR (x), r1, r0);
950 case cell_vm_macro_expand:
952 push_cc (CADR (r1), r1, r0, cell_vm_macro_expand);
956 push_cc (r1, r1, r0, cell_vm_eval_macro);
961 if (TYPE (r1) == TPAIR)
963 set_cdr_x (r2, CDR (r1));
964 set_car_x (r2, CAR (r1));
969 if (TYPE (r1) == TPAIR
970 && (CAR (r1) == cell_symbol_define
971 || CAR (r1) == cell_symbol_define_macro))
974 if (TYPE (r2) != TPAIR)
976 push_cc (CAR (CDDR (r1)), r2, cons (cons (CADR (r1), CADR (r1)), r0), cell_vm_eval_define);
982 SCM p = pairlis (CADR (r1), CADR (r1), r0);
983 SCM args = CDR (CADR (r1));
984 SCM body = CDDR (r1);
985 r1 = cons (cell_symbol_lambda, cons (args, body));
986 push_cc (r1, r2, p, cell_vm_eval_define);
990 if (CAAR (CAAR (g_stack)) == cell_symbol_define_macro
991 || CAR (CAAR (g_stack)) == cell_symbol_define_macro)
992 r1 = MAKE_MACRO (r2, r1);
993 SCM entry = cons (r2, r1);
994 SCM aa = cons (entry, cell_nil);
995 set_cdr_x (aa, cdr (r0));
997 SCM cl = assq (cell_closure, r0);
1002 #endif // MES_C_DEFINE
1004 push_cc (CAR (r1), r1, r0, cell_vm_eval_check_func); goto eval;
1006 push_cc (CDR (r2), r2, r0, cell_vm_eval2); goto evlis;
1008 r1 = cons (CAR (r2), r1);
1015 r1 = assert_defined (r1, assq_ref_env (r1, r0));
1018 default: goto vm_return;
1024 if (TYPE (r1) == TPAIR
1025 && (macro = lookup_macro_ (CAR (r1), r0)) != cell_f)
1027 r1 = cons (macro, CDR (r1));
1030 else if (TYPE (r1) == TPAIR
1031 && TYPE (CAR (r1)) == TSYMBOL
1032 && ((expanders = assq_ref_env (cell_symbol_sc_expander_alist, r0)) != cell_undefined)
1033 && ((macro = assq (CAR (r1), expanders)) != cell_f))
1035 SCM sc_expand = assq_ref_env (cell_symbol_macro_expand, r0);
1036 if (sc_expand != cell_undefined && sc_expand != cell_f)
1038 r1 = cons (sc_expand, cons (r1, cell_nil));
1045 x = cell_unspecified;
1046 while (r1 != cell_nil) {
1048 if (TYPE (r1) == TPAIR && TYPE (CAR (r1)) == TPAIR)
1050 if (CAAR (r1) == cell_symbol_begin)
1051 r1 = append2 (CDAR (r1), CDR (r1));
1052 else if (CAAR (r1) == cell_symbol_primitive_load)
1054 push_cc (cons (cell_symbol_read_input_file, cell_nil), r1, r0, cell_vm_begin_read_input_file);
1056 begin_read_input_file:
1057 r1 = append2 (r1, CDR (r2));
1060 if (CDR (r1) == cell_nil)
1065 push_cc (CAR (r1), r1, r0, cell_vm_begin2);
1075 push_cc (CAR (r1), r1, r0, cell_vm_if_expr);
1085 if (CDDR (r1) != cell_nil)
1087 r1 = CAR (CDDR (r1));
1090 r1 = cell_unspecified;
1093 call_with_current_continuation:
1095 x = MAKE_CONTINUATION (g_continuations++);
1097 push_cc (cons (CAR (r1), cons (x, cell_nil)), x, r0, cell_vm_call_with_current_continuation2);
1099 call_with_current_continuation2:
1100 CONTINUATION (r2) = g_stack;
1104 push_cc (cons (CAR (r1), cell_nil), r1, r0, cell_vm_call_with_values2);
1107 if (TYPE (r1) == TVALUES)
1109 r1 = cons (CADR (r2), r1);
1120 apply (SCM f, SCM x, SCM a) ///((internal))
1122 push_cc (cons (f, x), cell_unspecified, r0, cell_unspecified);
1124 return eval_apply ();
1128 mes_g_stack (SCM a) ///((internal))
1134 g_stack = cons (cell_nil, cell_nil);
1138 //
\f Environment setup
1141 make_tmps (struct scm* cells)
1144 cells[tmp].type = TCHAR;
1146 cells[tmp_num].type = TNUMBER;
1147 tmp_num2 = g_free++;
1148 cells[tmp_num2].type = TNUMBER;
1160 gc_init_cells () ///((internal))
1162 g_cells = (struct scm *)malloc (2*ARENA_SIZE*sizeof (struct scm));
1168 g_cells += sizeof (struct scm);
1178 gc_init_news () ///((internal))
1182 p -= sizeof (struct scm);
1183 p += ARENA_SIZE * sizeof (struct scm);
1186 g_news = g_cells-1 + ARENA_SIZE;
1189 NTYPE (0) = TVECTOR;
1193 g_news += sizeof (struct scm);
1203 mes_symbols () ///((internal))
1209 #include "mes.mes.symbols.i"
1211 #include "mes.symbols.i"
1214 g_symbol_max = g_free;
1215 make_tmps (g_cells);
1218 for (int i=1; i<g_symbol_max; i++)
1219 g_symbols = cons (i, g_symbols);
1224 #include "mes.mes.symbol-names.i"
1226 #include "mes.symbol-names.i"
1229 a = acons (cell_symbol_mes_version, MAKE_STRING (cstring_to_list (VERSION)), a);
1230 a = acons (cell_symbol_mes_prefix, MAKE_STRING (cstring_to_list (PREFIX)), a);
1232 a = acons (cell_symbol_dot, cell_dot, a);
1233 a = acons (cell_symbol_begin, cell_begin, a);
1234 a = acons (cell_symbol_call_with_values, cell_symbol_call_with_values, a);
1235 a = acons (cell_symbol_current_module, cell_symbol_current_module, a);
1236 a = acons (cell_symbol_call_with_current_continuation, cell_call_with_current_continuation, a);
1237 a = acons (cell_symbol_sc_expand, cell_f, a);
1240 a = acons (cell_symbol_gnuc, cell_t, a);
1241 a = acons (cell_symbol_mesc, cell_f, a);
1243 a = acons (cell_symbol_gnuc, cell_f, a);
1244 a = acons (cell_symbol_mesc, cell_t, a);
1248 a = acons (cell_symbol_c_reader, cell_t, a);
1250 a = acons (cell_symbol_c_reader, cell_f, a);
1254 a = acons (cell_symbol_c_define, cell_t, a);
1256 a = acons (cell_symbol_c_define, cell_f, a);
1258 a = acons (cell_closure, a, a);
1264 mes_environment () ///((internal))
1266 SCM a = mes_symbols ();
1267 return mes_g_stack (a);
1271 mes_builtins (SCM a) ///((internal))
1273 #if !__GNUC__ || !_POSIX_SOURCE
1274 #include "mes.mes.i"
1276 // Do not sort: Order of these includes define builtins
1277 #include "posix.mes.i"
1278 #include "math.mes.i"
1279 #include "lib.mes.i"
1280 #include "vector.mes.i"
1282 #include "reader.mes.i"
1284 #include "gc.mes.environment.i"
1285 #include "lib.mes.environment.i"
1286 #include "math.mes.environment.i"
1287 #include "mes.mes.environment.i"
1288 #include "posix.mes.environment.i"
1289 #include "reader.mes.environment.i"
1290 #include "vector.mes.environment.i"
1294 // Do not sort: Order of these includes define builtins
1302 #include "gc.environment.i"
1303 #include "lib.environment.i"
1304 #include "math.environment.i"
1305 #include "mes.environment.i"
1306 #include "posix.environment.i"
1307 #include "reader.environment.i"
1308 #include "vector.environment.i"
1313 fputs ("functions: ", STDERR);
1314 fputs (itoa (g_function), STDERR);
1315 fputs ("\n", STDERR);
1316 for (int i = 0; i < g_function; i++)
1318 fputs ("[", STDERR);
1319 fputs (itoa (i), STDERR);
1320 fputs ("]: ", STDERR);
1321 fputs (g_functions[i].name, STDERR);
1322 fputs ("\n", STDERR);
1324 fputs ("\n", STDERR);
1330 SCM read_input_file_env (SCM);
1333 load_env (SCM a) ///((internal))
1337 if (getenv ("MES_PREFIX"))
1340 strcpy (buf, getenv ("MES_PREFIX"));
1341 strcpy (buf + strlen (buf), "/module");
1342 strcpy (buf + strlen (buf), "/mes/read-0.mes");
1343 if (getenv ("MES_DEBUG"))
1345 eputs ("MES_PREFIX reading read-0:");
1349 g_stdin = open (buf, O_RDONLY);
1353 char *read0 = MODULEDIR "mes/read-0.mes";
1354 if (getenv ("MES_DEBUG"))
1356 eputs ("MODULEDIR reading read-0:");
1360 g_stdin = open (read0, O_RDONLY);
1364 if (getenv ("MES_DEBUG"))
1366 eputs (". reading read-0:");
1367 eputs ("module/mes/read-0.mes");
1370 g_stdin = open ("module/mes/read-0.mes", O_RDONLY);
1374 eputs ("boot failed, read-0.mes not found\n");
1378 if (!g_function) r0 = mes_builtins (r0);
1379 r2 = read_input_file_env (r0);
1385 bload_env (SCM a) ///((internal))
1388 char *mo = "mes/read-0-32.mo";
1389 g_stdin = open ("module/mes/read-0-32.mo", O_RDONLY);
1390 char *read0 = MODULEDIR "mes/read-0-32.mo";
1391 g_stdin = g_stdin >= 0 ? g_stdin : open (read0, O_RDONLY);
1393 char *mo ="mes/read-0.mo";
1394 g_stdin = open ("module/mes/read-0.mo", O_RDONLY);
1395 g_stdin = g_stdin >= 0 ? g_stdin : open (MODULEDIR "mes/read-0.mo", O_RDONLY);
1398 if (g_stdin < 0) {eputs ("no such file: ");eputs (mo);eputs ("\n");return 1;}
1399 assert (getchar () == 'M');
1400 assert (getchar () == 'E');
1401 assert (getchar () == 'S');
1403 if (g_debug) eputs ("*GOT MES*\n");
1404 g_stack = getchar () << 8;
1405 g_stack += getchar ();
1407 char *p = (char*)g_cells;
1414 g_free = (p-(char*)g_cells) / sizeof (struct scm);
1418 r0 = mes_builtins (r0);
1421 set_env_x (cell_symbol_gnuc, cell_t, r0);
1422 set_env_x (cell_symbol_mesc, cell_f, r0);
1424 set_env_x (cell_symbol_gnuc, cell_f, r0);
1425 set_env_x (cell_symbol_mesc, cell_t, r0);
1430 eputs ("symbols: ");
1432 while (s && s != cell_nil) {
1433 display_error_ (CAR (s));
1438 eputs ("functions: ");
1439 eputs (itoa (g_function));
1441 for (int i = 0; i < g_function; i++)
1446 eputs (g_functions[i].name);
1449 //display_error_ (r0);
1460 main (int argc, char *argv[])
1463 if (p = getenv ("MES_DEBUG")) g_debug = atoi (p);
1464 if (g_debug) {eputs (";;; MODULEDIR=");eputs (MODULEDIR);eputs ("\n");}
1465 if (p = getenv ("MES_MAX_ARENA")) MAX_ARENA_SIZE = atoi (p);
1466 if (p = getenv ("MES_ARENA")) ARENA_SIZE = atoi (p);
1467 GC_SAFETY = ARENA_SIZE / 400;
1468 if (argc > 1 && !strcmp (argv[1], "--help")) return puts ("Usage: mes [--dump|--load] < FILE\n");
1469 if (argc > 1 && !strcmp (argv[1], "--version")) {puts ("Mes ");puts (VERSION);puts ("\n");return 0;};
1472 r0 = mes_environment ();
1474 SCM program = (argc > 1 && !strcmp (argv[1], "--load"))
1475 ? bload_env (r0) : load_env (r0);
1476 g_tiny = argc > 2 && !strcmp (argv[2], "--tiny");
1477 if (argc > 1 && !strcmp (argv[1], "--dump")) return dump ();
1480 for (int i=argc-1; i>=0; i--) lst = cons (MAKE_STRING (cstring_to_list (argv[i])), lst);
1481 r0 = acons (cell_symbol_argv, lst, r0);
1482 push_cc (r2, cell_unspecified, r0, cell_unspecified);
1485 eputs ("program: ");
1486 display_error_ (r1);
1491 display_error_ (r1);
1496 eputs ("\nstats: [");
1497 eputs (itoa (g_free));