1 /* -*-comment-start: "//";comment-end:""-*-
2 * Mes --- Maxwell Equations of Software
3 * Copyright © 2016,2017,2018 Jan (janneke) 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/>.
27 int ARENA_SIZE = 20000000; // 32B: 100 MiB, 64b: 200 MiB
29 int MAX_ARENA_SIZE = 172100000; // 32b: ~ 2GiB
31 int MAX_ARENA_SIZE = 200000000; // 32b: 2.3GiB, 64b: 4.6GiB
34 int GC_SAFETY = 50000;
42 SCM g_continuations = 0;
54 SCM g_macros = 1; // cell_nil
57 enum type_t {TCHAR, TCLOSURE, TCONTINUATION, TFUNCTION, TKEYWORD, TMACRO, TNUMBER, TPAIR, TREF, TSPECIAL, TSTRING, TSYMBOL, TVALUES, TVARIABLE, TVECTOR, TBROKEN_HEART};
66 int (*function) (void);
71 typedef SCM (*function0_t) (void);
72 typedef SCM (*function1_t) (SCM);
73 typedef SCM (*function2_t) (SCM, SCM);
74 typedef SCM (*function3_t) (SCM, SCM, SCM);
75 typedef SCM (*functionn_t) (SCM);
78 function0_t function0;
79 function1_t function1;
80 function2_t function2;
81 function3_t function3;
82 functionn_t functionn;
114 struct scm *g_cells = foobar;
115 struct scm *g_news = foobar;
117 struct scm *g_cells = 0;
118 struct scm *g_news = 0;
121 struct scm scm_nil = {TSPECIAL, "()",0};
122 struct scm scm_f = {TSPECIAL, "#f",0};
123 struct scm scm_t = {TSPECIAL, "#t",0};
124 struct scm scm_dot = {TSPECIAL, ".",0};
125 struct scm scm_arrow = {TSPECIAL, "=>",0};
126 struct scm scm_undefined = {TSPECIAL, "*undefined*",0};
127 struct scm scm_unspecified = {TSPECIAL, "*unspecified*",0};
128 struct scm scm_closure = {TSPECIAL, "*closure*",0};
129 struct scm scm_circular = {TSPECIAL, "*circular*",0};
130 struct scm scm_begin = {TSPECIAL, "*begin*",0};
132 struct scm scm_symbol_dot = {TSYMBOL, "*dot*",0};
133 struct scm scm_symbol_lambda = {TSYMBOL, "lambda",0};
134 struct scm scm_symbol_begin = {TSYMBOL, "begin",0};
135 struct scm scm_symbol_if = {TSYMBOL, "if",0};
136 struct scm scm_symbol_quote = {TSYMBOL, "quote",0};
137 struct scm scm_symbol_define = {TSYMBOL, "define",0};
138 struct scm scm_symbol_define_macro = {TSYMBOL, "define-macro",0};
140 struct scm scm_symbol_quasiquote = {TSYMBOL, "quasiquote", 0};
141 struct scm scm_symbol_unquote = {TSYMBOL, "unquote", 0};
142 struct scm scm_symbol_unquote_splicing = {TSYMBOL, "unquote-splicing", 0};
143 struct scm scm_symbol_syntax = {TSYMBOL, "syntax",0};
144 struct scm scm_symbol_quasisyntax = {TSYMBOL, "quasisyntax", 0};
145 struct scm scm_symbol_unsyntax = {TSYMBOL, "unsyntax", 0};
146 struct scm scm_symbol_unsyntax_splicing = {TSYMBOL, "unsyntax-splicing", 0};
148 struct scm scm_symbol_set_x = {TSYMBOL, "set!",0};
150 struct scm scm_symbol_sc_expand = {TSYMBOL, "sc-expand",0};
151 struct scm scm_symbol_macro_expand = {TSYMBOL, "macro-expand",0};
152 struct scm scm_symbol_portable_macro_expand = {TSYMBOL, "portable-macro-expand",0};
153 struct scm scm_symbol_sc_expander_alist = {TSYMBOL, "*sc-expander-alist*",0};
155 struct scm scm_symbol_call_with_values = {TSYMBOL, "call-with-values",0};
156 struct scm scm_call_with_current_continuation = {TSPECIAL, "*call/cc*",0};
157 struct scm scm_symbol_call_with_current_continuation = {TSYMBOL, "call-with-current-continuation",0};
158 struct scm scm_symbol_current_module = {TSYMBOL, "current-module",0};
159 struct scm scm_symbol_primitive_load = {TSYMBOL, "primitive-load",0};
160 struct scm scm_symbol_read_input_file = {TSYMBOL, "read-input-file",0};
161 struct scm scm_symbol_write = {TSYMBOL, "write",0};
162 struct scm scm_symbol_display = {TSYMBOL, "display",0};
164 struct scm scm_symbol_throw = {TSYMBOL, "throw",0};
165 struct scm scm_symbol_not_a_number = {TSYMBOL, "not-a-number",0};
166 struct scm scm_symbol_not_a_pair = {TSYMBOL, "not-a-pair",0};
167 struct scm scm_symbol_system_error = {TSYMBOL, "system-error",0};
168 struct scm scm_symbol_wrong_number_of_args = {TSYMBOL, "wrong-number-of-args",0};
169 struct scm scm_symbol_wrong_type_arg = {TSYMBOL, "wrong-type-arg",0};
170 struct scm scm_symbol_unbound_variable = {TSYMBOL, "unbound-variable",0};
172 struct scm scm_symbol_argv = {TSYMBOL, "%argv",0};
173 struct scm scm_symbol_mes_prefix = {TSYMBOL, "%prefix",0};
174 struct scm scm_symbol_mes_version = {TSYMBOL, "%version",0};
176 struct scm scm_symbol_car = {TSYMBOL, "car",0};
177 struct scm scm_symbol_cdr = {TSYMBOL, "cdr",0};
178 struct scm scm_symbol_pmatch_car = {TSYMBOL, "pmatch-car",0};
179 struct scm scm_symbol_pmatch_cdr = {TSYMBOL, "pmatch-cdr",0};
181 struct scm scm_vm_evlis = {TSPECIAL, "*vm-evlis*",0};
182 struct scm scm_vm_evlis2 = {TSPECIAL, "*vm-evlis2*",0};
183 struct scm scm_vm_evlis3 = {TSPECIAL, "*vm-evlis3*",0};
184 struct scm scm_vm_apply = {TSPECIAL, "core:apply",0};
185 struct scm scm_vm_apply2 = {TSPECIAL, "*vm-apply2*",0};
186 struct scm scm_vm_eval = {TSPECIAL, "core:eval",0};
188 struct scm scm_vm_eval_pmatch_car = {TSPECIAL, "*vm-eval-pmatch-car*",0};
189 struct scm scm_vm_eval_pmatch_cdr = {TSPECIAL, "*vm-eval-pmatch-cdr*",0};
190 struct scm scm_vm_eval_define = {TSPECIAL, "*vm-eval-define*",0};
192 struct scm scm_vm_eval_set_x = {TSPECIAL, "*vm-eval-set!*",0};
193 struct scm scm_vm_eval_macro_expand_eval = {TSPECIAL, "*vm:eval-macro-expand-eval*",0};
194 struct scm scm_vm_eval_macro_expand_expand = {TSPECIAL, "*vm:eval-macro-expand-expand*",0};
195 struct scm scm_vm_eval_check_func = {TSPECIAL, "*vm-eval-check-func*",0};
196 struct scm scm_vm_eval2 = {TSPECIAL, "*vm-eval2*",0};
197 struct scm scm_vm_macro_expand = {TSPECIAL, "core:macro-expand",0};
198 struct scm scm_vm_macro_expand_define = {TSPECIAL, "*vm:core:macro-expand-define*",0};
199 struct scm scm_vm_macro_expand_define_macro = {TSPECIAL, "*vm:core:macro-expand-define-macro*",0};
200 struct scm scm_vm_macro_expand_lambda = {TSPECIAL, "*vm:core:macro-expand-lambda*",0};
201 struct scm scm_vm_macro_expand_set_x = {TSPECIAL, "*vm:core:macro-expand-set!*",0};
202 struct scm scm_vm_begin_expand_primitive_load = {TSPECIAL, "*vm:core:begin-expand-primitive-load*",0};
203 struct scm scm_vm_begin_primitive_load = {TSPECIAL, "*vm:core:begin-primitive-load*",0};
204 struct scm scm_vm_macro_expand_car = {TSPECIAL, "*vm:core:macro-expand-car*",0};
205 struct scm scm_vm_macro_expand_cdr = {TSPECIAL, "*vm:macro-expand-cdr*",0};
206 struct scm scm_vm_begin_expand = {TSPECIAL, "*vm:begin-expand*",0};
207 struct scm scm_vm_begin_expand_eval = {TSPECIAL, "*vm:begin-expand-eval*",0};
208 struct scm scm_vm_begin_expand_macro = {TSPECIAL, "*vm:begin-expand-macro*",0};
209 struct scm scm_vm_begin = {TSPECIAL, "*vm-begin*",0};
210 struct scm scm_vm_begin_read_input_file = {TSPECIAL, "*vm-begin-read-input-file*",0};
211 struct scm scm_vm_begin_eval = {TSPECIAL, "*vm:begin-eval*",0};
212 struct scm scm_vm_if = {TSPECIAL, "*vm-if*",0};
213 struct scm scm_vm_if_expr = {TSPECIAL, "*vm-if-expr*",0};
214 struct scm scm_vm_call_with_values2 = {TSPECIAL, "*vm-call-with-values2*",0};
215 struct scm scm_vm_call_with_current_continuation2 = {TSPECIAL, "*vm-call-with-current-continuation2*",0};
216 struct scm scm_vm_return = {TSPECIAL, "*vm-return*",0};
218 struct scm scm_symbol_gnuc = {TSYMBOL, "%gnuc",0};
219 struct scm scm_symbol_mesc = {TSYMBOL, "%mesc",0};
221 struct scm scm_test = {TSYMBOL, "test",0};
224 #include "mes.mes.symbols.h"
226 #include "mes.symbols.h"
233 struct function g_functions[200];
236 #if !__GNUC__ || !_POSIX_SOURCE
239 #include "math.mes.h"
241 #include "posix.mes.h"
242 #include "reader.mes.h"
243 #include "vector.mes.h"
254 #define TYPE(x) g_cells[x].type
255 #define CAR(x) g_cells[x].car
256 #define CDR(x) g_cells[x].cdr
258 #define NTYPE(x) g_news[x].type
259 #define NCAR(x) g_news[x].car
260 #define NCDR(x) g_news[x].cdr
263 #define LENGTH(x) g_cells[x].car
264 #define REF(x) g_cells[x].car
265 #define STRING(x) g_cells[x].car
266 #define VARIABLE(x) g_cells[x].car
267 #define VARIABLE_GLOBAL_P(x) g_cells[x].cdr
269 #define CLOSURE(x) g_cells[x].cdr
270 #define CONTINUATION(x) g_cells[x].cdr
272 #define FUNCTION(x) g_functions[g_cells[x].cdr]
273 #define FUNCTION0(x) g_functions[g_cells[x].cdr].function
274 #define MACRO(x) g_cells[x].cdr
275 #define VALUE(x) g_cells[x].cdr
276 #define VECTOR(x) g_cells[x].cdr
278 #define NLENGTH(x) g_news[x].car
280 #define NVALUE(x) g_news[x].cdr
281 #define NVECTOR(x) g_news[x].cdr
284 #define CONTINUATION(x) g_cells[x].cdr
285 #define HITS(x) g_cells[x].hits
286 #define LENGTH(x) g_cells[x].length
287 #define NAME(x) g_cells[x].name
288 #define STRING(x) g_cells[x].string
289 #define VARIABLE(x) g_cells[x].variable
290 #define VARIABLE_GLOBAL_P(x) g_cells[x].cdr
292 #define CLOSURE(x) g_cells[x].closure
293 #define MACRO(x) g_cells[x].macro
294 #define REF(x) g_cells[x].ref
295 #define VALUE(x) g_cells[x].value
296 #define VECTOR(x) g_cells[x].vector
297 #define FUNCTION(x) g_functions[g_cells[x].function]
298 #define FUNCTION0(x) g_functions[g_cells[x].function].function0
300 #define NLENGTH(x) g_news[x].length
302 #define NVALUE(x) g_news[x].value
303 #define NVECTOR(x) g_news[x].vector
306 #define MAKE_CHAR(n) make_cell_ (tmp_num_ (TCHAR), 0, tmp_num2_ (n))
307 #define MAKE_CONTINUATION(n) make_cell_ (tmp_num_ (TCONTINUATION), n, g_stack)
308 #define MAKE_NUMBER(n) make_cell_ (tmp_num_ (TNUMBER), 0, tmp_num2_ (n))
309 #define MAKE_REF(n) make_cell_ (tmp_num_ (TREF), n, 0)
310 #define MAKE_STRING(x) make_cell_ (tmp_num_ (TSTRING), x, 0)
311 #define MAKE_KEYWORD(x) make_cell_ (tmp_num_ (TKEYWORD), x, 0)
312 #define MAKE_MACRO(name, x) make_cell_ (tmp_num_ (TMACRO), STRING (name), x)
314 #define CAAR(x) CAR (CAR (x))
315 #define CADR(x) CAR (CDR (x))
316 #define CDAR(x) CDR (CAR (x))
317 #define CDDR(x) CDR (CDR (x))
318 #define CADAR(x) CAR (CDR (CAR (x)))
319 #define CADDR(x) CAR (CDR (CDR (x)))
320 #define CDADAR(x) CAR (CDR (CAR (CDR (x))))
325 assert (g_free + n < ARENA_SIZE);
341 VALUE (tmp_num2) = x;
346 make_cell_ (SCM type, SCM car, SCM cdr)
349 assert (TYPE (type) == TNUMBER);
350 TYPE (x) = VALUE (type);
351 if (VALUE (type) == TCHAR || VALUE (type) == TNUMBER)
358 else if (VALUE (type) == TFUNCTION)
374 make_symbol_ (SCM s) ///((internal))
376 VALUE (tmp_num) = TSYMBOL;
377 SCM x = make_cell_ (tmp_num, s, 0);
378 g_symbols = cons (x, g_symbols);
383 list_of_char_equal_p (SCM a, SCM b) ///((internal))
385 while (a != cell_nil && b != cell_nil && VALUE (CAR (a)) == VALUE (CAR (b)))
387 assert (TYPE (CAR (a)) == TCHAR);
388 assert (TYPE (CAR (b)) == TCHAR);
392 return (a == cell_nil && b == cell_nil) ? cell_t : cell_f;
396 lookup_symbol_ (SCM s)
401 if (list_of_char_equal_p (STRING (CAR (x)), s) == cell_t)
408 x = make_symbol_ (s);
415 return MAKE_NUMBER (TYPE (x));
421 return (TYPE (x) != TCONTINUATION
422 && (TYPE (CAR (x)) == TPAIR // FIXME: this is weird
423 || TYPE (CAR (x)) == TREF
424 || TYPE (CAR (x)) == TSPECIAL
425 || TYPE (CAR (x)) == TSYMBOL
426 || TYPE (CAR (x)) == TSTRING)) ? CAR (x) : MAKE_NUMBER (CAR (x));
432 return (TYPE (x) != TCHAR
433 && TYPE (x) != TNUMBER
434 && (TYPE (CDR (x)) == TPAIR
435 || TYPE (CDR (x)) == TREF
436 || TYPE (CDR (x)) == TSPECIAL
437 || TYPE (CDR (x)) == TSYMBOL
438 || TYPE (CDR (x)) == TSTRING)) ? CDR (x) : MAKE_NUMBER (CDR (x));
444 assert (TYPE (x) == TFUNCTION);
445 return MAKE_NUMBER (FUNCTION (x).arity);
451 VALUE (tmp_num) = TPAIR;
452 return make_cell_ (tmp_num, x, y);
459 if (TYPE (x) != TPAIR)
460 error (cell_symbol_not_a_pair, cons (x, cell_symbol_car));
469 if (TYPE (x) != TPAIR)
470 error (cell_symbol_not_a_pair, cons (x, cell_symbol_cdr));
476 list (SCM x) ///((arity . n))
484 return x == cell_nil ? cell_t : cell_f;
491 || ((TYPE (x) == TKEYWORD && TYPE (y) == TKEYWORD
492 && STRING (x) == STRING (y)))
493 || (TYPE (x) == TCHAR && TYPE (y) == TCHAR
494 && VALUE (x) == VALUE (y))
495 || (TYPE (x) == TNUMBER && TYPE (y) == TNUMBER
496 && VALUE (x) == VALUE (y)))
501 values (SCM x) ///((arity . n))
509 acons (SCM key, SCM value, SCM alist)
511 return cons (cons (key, value), alist);
518 while (x != cell_nil)
521 if (TYPE (x) != TPAIR)
522 return MAKE_NUMBER (-1);
525 return MAKE_NUMBER (n);
528 SCM apply (SCM, SCM, SCM);
531 error (SCM key, SCM x)
535 if ((throw = assq_ref_env (cell_symbol_throw, r0)) != cell_undefined)
536 return apply (throw, cons (key, cons (x, cell_nil)), r0);
538 display_error_ (key);
546 cstring_to_list (char const* s)
551 p = cons (MAKE_CHAR (s[i]), p);
557 assert_defined (SCM x, SCM e) ///((internal))
559 if (e == cell_undefined)
560 return error (cell_symbol_unbound_variable, x);
565 check_formals (SCM f, SCM formals, SCM args) ///((internal))
567 int flen = (TYPE (formals) == TNUMBER) ? VALUE (formals) : VALUE (length (formals));
568 int alen = VALUE (length (args));
569 if (alen != flen && alen != -1 && flen != -1)
571 char *s = "apply: wrong number of arguments; expected: ";
578 SCM e = MAKE_STRING (cstring_to_list (s));
579 return error (cell_symbol_wrong_number_of_args, cons (e, f));
581 return cell_unspecified;
585 check_apply (SCM f, SCM e) ///((internal))
588 if (f == cell_f || f == cell_t)
592 if (f == cell_unspecified)
593 type = "*unspecified*";
594 if (f == cell_undefined)
595 type = "*undefined*";
596 if (TYPE (f) == TCHAR)
598 if (TYPE (f) == TNUMBER)
600 if (TYPE (f) == TSTRING)
605 char *s = "cannot apply: ";
611 SCM e = MAKE_STRING (cstring_to_list (s));
612 return error (cell_symbol_wrong_type_arg, cons (e, f));
614 return cell_unspecified;
618 gc_push_frame () ///((internal))
620 SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cell_nil))));
621 g_stack = cons (frame, g_stack);
626 append2 (SCM x, SCM y)
630 if (TYPE (x) != TPAIR)
631 error (cell_symbol_not_a_pair, cons (x, cell_append2));
632 return cons (car (x), append2 (cdr (x), y));
636 pairlis (SCM x, SCM y, SCM a)
640 if (TYPE (x) != TPAIR)
641 return cons (cons (x, y), a);
642 return cons (cons (car (x), car (y)),
643 pairlis (cdr (x), cdr (y), a));
649 if ((FUNCTION (fn).arity > 0 || FUNCTION (fn).arity == -1)
650 && x != cell_nil && TYPE (CAR (x)) == TVALUES)
651 x = cons (CADAR (x), CDR (x));
652 if ((FUNCTION (fn).arity > 1 || FUNCTION (fn).arity == -1)
653 && x != cell_nil && TYPE (CDR (x)) == TPAIR && TYPE (CADR (x)) == TVALUES)
654 x = cons (CAR (x), cons (CDADAR (x), CDR (x)));
655 switch (FUNCTION (fn).arity)
657 #if __MESC__ || !_POSIX_SOURCE
658 case 0: return (FUNCTION (fn).function) ();
659 case 1: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (CAR (x));
660 case 2: return ((SCM(*)(SCM,SCM))(FUNCTION (fn).function)) (CAR (x), CADR (x));
661 case 3: return ((SCM(*)(SCM,SCM,SCM))(FUNCTION (fn).function)) (CAR (x), CADR (x), CAR (CDDR (x)));
662 case -1: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);
663 default: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);
665 case 0: return FUNCTION (fn).function0 ();
666 case 1: return FUNCTION (fn).function1 (CAR (x));
667 case 2: return FUNCTION (fn).function2 (CAR (x), CADR (x));
668 case 3: return FUNCTION (fn).function3 (CAR (x), CADR (x), CAR (CDDR (x)));
669 case -1: return FUNCTION (fn).functionn (x);
673 return cell_unspecified;
685 while (a != cell_nil && v != VALUE (CAAR (a)))
692 while (a != cell_nil && v != STRING (CAAR (a)))
699 while (a != cell_nil && x != CAAR (a))
702 return a != cell_nil ? CAR (a) : cell_f;
706 assq_ref_env (SCM x, SCM a)
710 return cell_undefined;
715 set_car_x (SCM x, SCM e)
717 if (TYPE (x) != TPAIR)
718 error (cell_symbol_not_a_pair, cons (x, cell_set_car_x));
720 return cell_unspecified;
724 set_cdr_x (SCM x, SCM e)
726 if (TYPE (x) != TPAIR)
727 error (cell_symbol_not_a_pair, cons (x, cell_set_cdr_x));
729 return cell_unspecified;
733 set_env_x (SCM x, SCM e, SCM a)
736 if (TYPE (x) == TVARIABLE)
739 p = assert_defined (x, assq (x, a));
740 if (TYPE (p) != TPAIR)
741 error (cell_symbol_not_a_pair, cons (p, x));
742 return set_cdr_x (p, e);
746 call_lambda (SCM e, SCM x, SCM aa, SCM a) ///((internal))
748 SCM cl = cons (cons (cell_closure, x), x);
751 return cell_unspecified;
755 make_closure_ (SCM args, SCM body, SCM a) ///((internal))
757 return make_cell_ (tmp_num_ (TCLOSURE), cell_f, cons (cons (cell_circular, a), cons (args, body)));
761 make_variable_ (SCM var, SCM global_p) ///((internal))
763 return make_cell_ (tmp_num_ (TVARIABLE), var, global_p);
767 lookup_macro_ (SCM x, SCM a) ///((internal))
769 if (TYPE (x) != TSYMBOL)
773 return MACRO (CDR (m));
778 push_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
787 return cell_unspecified;
791 gc_peek_frame () ///((internal))
793 SCM frame = CAR (g_stack);
796 r3 = CAR (CDDR (frame));
797 r0 = CADR (CDDR (frame));
802 gc_pop_frame () ///((internal))
804 SCM frame = gc_peek_frame (g_stack);
805 g_stack = CDR (g_stack);
809 char const* string_to_cstring (SCM s);
812 add_formals (SCM formals, SCM x)
814 while (TYPE (x) == TPAIR)
816 formals = cons (CAR (x), formals);
819 if (TYPE (x) == TSYMBOL)
820 formals = cons (x, formals);
825 formal_p (SCM x, SCM formals) /// ((internal))
827 if (TYPE (formals) == TSYMBOL)
833 while (TYPE (formals) == TPAIR && CAR (formals) != x)
834 formals = CDR (formals);
835 if (TYPE (formals) == TSYMBOL)
837 return TYPE (formals) == TPAIR;
841 expand_variable_ (SCM x, SCM formals, int top_p) ///((internal))
843 while (TYPE (x) == TPAIR)
845 if (TYPE (CAR (x)) == TPAIR)
847 if (CAAR (x) == cell_symbol_lambda)
849 SCM f = CAR (CDAR (x));
850 formals = add_formals (formals, f);
852 else if (CAAR (x) == cell_symbol_define
853 || CAAR (x) == cell_symbol_define_macro)
855 SCM f = CAR (CDAR (x));
856 formals = add_formals (formals, f);
858 if (CAAR (x) != cell_symbol_quote)
859 expand_variable_ (CAR (x), formals, 0);
863 if (CAR (x) == cell_symbol_lambda)
866 formals = add_formals (formals, f);
869 else if (CAR (x) == cell_symbol_define
870 || CAR (x) == cell_symbol_define_macro)
873 if (top_p && TYPE (f) == TPAIR)
875 formals = add_formals (formals, f);
878 else if (CAR (x) == cell_symbol_quote)
879 return cell_unspecified;
880 else if (TYPE (CAR (x)) == TSYMBOL
881 && CAR (x) != cell_begin
882 && CAR (x) != cell_symbol_begin
883 && CAR (x) != cell_symbol_current_module
884 && CAR (x) != cell_symbol_primitive_load
885 && CAR (x) != cell_symbol_if // HMM
886 && !formal_p (CAR (x), formals))
888 SCM v = assq (CAR (x), r0);
890 CAR (x) = make_variable_ (v, cell_t);
896 return cell_unspecified;
900 expand_variable (SCM x, SCM formals) ///((internal))
902 return expand_variable_ (x, formals, 1);
912 case cell_vm_evlis: goto evlis;
913 case cell_vm_evlis2: goto evlis2;
914 case cell_vm_evlis3: goto evlis3;
915 case cell_vm_apply: goto apply;
916 case cell_vm_apply2: goto apply2;
917 case cell_vm_eval: goto eval;
918 case cell_vm_eval_pmatch_car: goto eval_pmatch_car;
919 case cell_vm_eval_pmatch_cdr: goto eval_pmatch_cdr;
920 case cell_vm_eval_define: goto eval_define;
921 case cell_vm_eval_set_x: goto eval_set_x;
922 case cell_vm_eval_macro_expand_eval: goto eval_macro_expand_eval;
923 case cell_vm_eval_macro_expand_expand: goto eval_macro_expand_expand;
924 case cell_vm_eval_check_func: goto eval_check_func;
925 case cell_vm_eval2: goto eval2;
926 case cell_vm_macro_expand: goto macro_expand;
927 case cell_vm_macro_expand_define: goto macro_expand_define;
928 case cell_vm_macro_expand_define_macro: goto macro_expand_define_macro;
929 case cell_vm_macro_expand_lambda: goto macro_expand_lambda;
930 case cell_vm_macro_expand_set_x: goto macro_expand_set_x;
931 case cell_vm_macro_expand_car: goto macro_expand_car;
932 case cell_vm_macro_expand_cdr: goto macro_expand_cdr;
933 case cell_vm_begin: goto begin;
934 case cell_vm_begin_eval: goto begin_eval;
935 case cell_vm_begin_primitive_load: goto begin_primitive_load;
936 case cell_vm_begin_expand: goto begin_expand;
937 case cell_vm_begin_expand_eval: goto begin_expand_eval;
938 case cell_vm_begin_expand_macro: goto begin_expand_macro;
939 case cell_vm_begin_expand_primitive_load: goto begin_expand_primitive_load;
940 case cell_vm_if: goto vm_if;
941 case cell_vm_if_expr: goto if_expr;
942 case cell_vm_call_with_current_continuation2: goto call_with_current_continuation2;
943 case cell_vm_call_with_values2: goto call_with_values2;
944 case cell_vm_return: goto vm_return;
945 case cell_unspecified: return r1;
955 if (TYPE (r1) != TPAIR)
957 push_cc (CAR (r1), r1, r0, cell_vm_evlis2);
960 push_cc (CDR (r2), r1, r0, cell_vm_evlis3);
968 switch (TYPE (CAR (r1)))
972 check_formals (CAR (r1), MAKE_NUMBER (FUNCTION (CAR (r1)).arity), CDR (r1));
973 r1 = call (CAR (r1), CDR (r1)); /// FIXME: move into eval_apply
978 SCM cl = CLOSURE (CAR (r1));
979 SCM body = CDDR (cl);
980 SCM formals = CADR (cl);
984 check_formals (CAR (r1), formals, CDR (r1));
985 SCM p = pairlis (formals, args, aa);
986 call_lambda (body, p, aa, r0);
992 g_stack = CONTINUATION (CAR (r1));
1003 push_cc (cons (CADR (r1), CADDR (r1)), r1, r0, cell_vm_return);
1008 push_cc (CADR (r1), r1, CADDR (r1), cell_vm_return);
1011 case cell_call_with_current_continuation:
1014 goto call_with_current_continuation;
1016 default: check_apply (cell_f, CAR (r1));
1021 if (CAR (r1) == cell_symbol_call_with_values)
1024 goto call_with_values;
1026 if (CAR (r1) == cell_symbol_current_module)
1037 case cell_symbol_lambda:
1039 SCM formals = CADR (CAR (r1));
1040 SCM args = CDR (r1);
1041 SCM body = CDDR (CAR (r1));
1042 SCM p = pairlis (formals, CDR (r1), r0);
1043 check_formals (r1, formals, args);
1044 call_lambda (body, p, p, r0);
1050 push_cc (CAR (r1), r1, r0, cell_vm_apply2);
1053 check_apply (r1, CAR (r2));
1054 r1 = cons (r1, CDR (r2));
1065 case cell_symbol_pmatch_car:
1067 push_cc (CADR (r1), r1, r0, cell_vm_eval_pmatch_car);
1075 case cell_symbol_pmatch_cdr:
1077 push_cc (CADR (r1), r1, r0, cell_vm_eval_pmatch_cdr);
1085 case cell_symbol_quote:
1092 case cell_symbol_begin: goto begin;
1093 case cell_symbol_lambda:
1095 r1 = make_closure_ (CADR (r1), CDDR (r1), r0);
1098 case cell_symbol_if:
1103 case cell_symbol_set_x:
1105 push_cc (CAR (CDDR (r1)), r1, r0, cell_vm_eval_set_x);
1108 r1 = set_env_x (CADR (r2), r1, r0);
1111 case cell_vm_macro_expand:
1113 push_cc (CADR (r1), r1, r0, cell_vm_eval_macro_expand_eval);
1115 eval_macro_expand_eval:
1116 push_cc (r1, r2, r0, cell_vm_eval_macro_expand_expand);
1118 eval_macro_expand_expand:
1123 if (TYPE (r1) == TPAIR
1124 && (CAR (r1) == cell_symbol_define
1125 || CAR (r1) == cell_symbol_define_macro))
1127 int global_p = CAAR (r0) != cell_closure;
1128 int macro_p = CAR (r1) == cell_symbol_define_macro;
1131 SCM name = CADR (r1);
1132 if (TYPE (CADR (r1)) == TPAIR)
1136 SCM entry = assq (name, g_macros);
1137 if (entry == cell_f)
1139 entry = cons (name, cell_f);
1140 g_macros = cons (entry, g_macros);
1145 SCM entry = assq (name, r0);
1146 if (entry == cell_f)
1148 entry = cons (name, cell_f);
1149 SCM aa = cons (entry, cell_nil);
1150 set_cdr_x (aa, cdr (r0));
1156 if (TYPE (CADR (r1)) != TPAIR)
1158 push_cc (CAR (CDDR (r1)), r2, cons (cons (CADR (r1), CADR (r1)), r0), cell_vm_eval_define);
1163 SCM p = pairlis (CADR (r1), CADR (r1), r0);
1164 SCM formals = CDR (CADR (r1));
1165 SCM body = CDDR (r1);
1167 if (macro_p || global_p)
1168 expand_variable (body, formals);
1169 r1 = cons (cell_symbol_lambda, cons (formals, body));
1170 push_cc (r1, r2, p, cell_vm_eval_define);
1174 SCM name = CADR (r2);
1175 if (TYPE (CADR (r2)) == TPAIR)
1178 // hmm, mes needs a reminder...
1179 global_p = CAAR (r0) != cell_closure;
1180 macro_p = CAR (r2) == cell_symbol_define_macro;
1184 SCM entry = assq (name, g_macros);
1185 r1 = MAKE_MACRO (name, r1);
1186 set_cdr_x (entry, r1);
1190 SCM entry = assq (name, r0);
1191 set_cdr_x (entry, r1);
1195 SCM entry = cons (name, r1);
1196 SCM aa = cons (entry, cell_nil);
1197 set_cdr_x (aa, cdr (r0));
1199 SCM cl = assq (cell_closure, r0);
1202 r1 = cell_unspecified;
1205 push_cc (CAR (r1), r1, r0, cell_vm_eval_check_func);
1208 push_cc (CDR (r2), r2, r0, cell_vm_eval2);
1211 r1 = cons (CAR (r2), r1);
1218 if (r1 == cell_symbol_current_module)
1220 if (r1 == cell_symbol_begin) // FIXME
1225 r1 = assert_defined (r1, assq_ref_env (r1, r0));
1230 r1 = CDR (VARIABLE (r1));
1233 default: goto vm_return;
1241 if (TYPE (r1) != TPAIR || CAR (r1) == cell_symbol_quote)
1244 if (CAR (r1) == cell_symbol_lambda)
1246 push_cc (CDDR (r1), r1, r0, cell_vm_macro_expand_lambda);
1248 macro_expand_lambda:
1254 if (TYPE (r1) == TPAIR
1255 && (macro = lookup_macro_ (CAR (r1), g_macros)) != cell_f)
1257 r1 = cons (macro, CDR (r1));
1258 push_cc (r1, cell_nil, r0, cell_vm_macro_expand);
1262 if (CAR (r1) == cell_symbol_define
1263 || CAR (r1) == cell_symbol_define_macro)
1265 push_cc (CDDR (r1), r1, r0, cell_vm_macro_expand_define);
1267 macro_expand_define:
1270 if (CAR (r1) == cell_symbol_define_macro)
1272 push_cc (r1, r1, r0, cell_vm_macro_expand_define_macro);
1274 macro_expand_define_macro:
1280 if (CAR (r1) == cell_symbol_set_x)
1282 push_cc (CDDR (r1), r1, r0, cell_vm_macro_expand_set_x);
1290 if (TYPE (r1) == TPAIR
1291 && TYPE (CAR (r1)) == TSYMBOL
1292 && CAR (r1) != cell_symbol_begin
1293 && ((macro = assq (cell_symbol_portable_macro_expand, g_macros)) != cell_f)
1294 && ((expanders = assq_ref_env (cell_symbol_sc_expander_alist, r0)) != cell_undefined)
1295 && ((macro = assq (CAR (r1), expanders)) != cell_f))
1297 SCM sc_expand = assq_ref_env (cell_symbol_macro_expand, r0);
1299 if (sc_expand != cell_undefined && sc_expand != cell_f)
1301 r1 = cons (sc_expand, cons (r1, cell_nil));
1306 push_cc (CAR (r1), r1, r0, cell_vm_macro_expand_car);
1312 if (CDR (r1) == cell_nil)
1315 push_cc (CDR (r1), r1, r0, cell_vm_macro_expand_cdr);
1326 x = cell_unspecified;
1327 while (r1 != cell_nil)
1330 if (TYPE (r1) == TPAIR)
1332 if (CAAR (r1) == cell_symbol_primitive_load)
1334 SCM program = cons (CAR (r1), cell_nil);
1335 push_cc (program, r1, r0, cell_vm_begin_primitive_load);
1337 begin_primitive_load:
1343 if (TYPE (r1) == TPAIR && TYPE (CAR (r1)) == TPAIR)
1345 if (CAAR (r1) == cell_symbol_begin)
1346 r1 = append2 (CDAR (r1), CDR (r1));
1348 if (CDR (r1) == cell_nil)
1353 push_cc (CAR (r1), r1, r0, cell_vm_begin_eval);
1364 x = cell_unspecified;
1365 while (r1 != cell_nil)
1369 if (TYPE (r1) == TPAIR)
1371 if (TYPE (CAR (r1)) == TPAIR && CAAR (r1) == cell_symbol_begin)
1372 r1 = append2 (CDAR (r1), CDR (r1));
1373 if (CAAR (r1) == cell_symbol_primitive_load)
1375 push_cc (CADR (CAR (r1)), r1, r0, cell_vm_begin_expand_primitive_load);
1376 goto eval; // FIXME: expand too?!
1377 begin_expand_primitive_load:;
1378 SCM input; // = current_input_port ();
1379 if (TYPE (r1) == TNUMBER && VALUE (r1) == 0)
1381 else if (TYPE (r1) == TSTRING)
1382 input = set_current_input_port (open_input_file (r1));
1386 push_cc (input, r2, r0, cell_vm_return);
1387 x = read_input_file_env (r0);
1391 set_current_input_port (input);
1392 r1 = cons (cell_symbol_begin, r1);
1399 push_cc (CAR (r1), r1, r0, cell_vm_begin_expand_macro);
1409 expand_variable (CAR (r1), cell_nil);
1410 //eputs ("expanded r1="); write_error_ (CAR (r1)); eputs ("\n");
1411 push_cc (CAR (r1), r1, r0, cell_vm_begin_expand_eval);
1421 push_cc (CAR (r1), r1, r0, cell_vm_if_expr);
1431 if (CDDR (r1) != cell_nil)
1433 r1 = CAR (CDDR (r1));
1436 r1 = cell_unspecified;
1439 call_with_current_continuation:
1441 x = MAKE_CONTINUATION (g_continuations++);
1443 push_cc (cons (CAR (r1), cons (x, cell_nil)), x, r0, cell_vm_call_with_current_continuation2);
1445 call_with_current_continuation2:
1446 CONTINUATION (r2) = g_stack;
1450 push_cc (cons (CAR (r1), cell_nil), r1, r0, cell_vm_call_with_values2);
1453 if (TYPE (r1) == TVALUES)
1455 r1 = cons (CADR (r2), r1);
1466 apply (SCM f, SCM x, SCM a) ///((internal))
1468 push_cc (cons (f, x), cell_unspecified, r0, cell_unspecified);
1470 return eval_apply ();
1474 mes_g_stack (SCM a) ///((internal))
1480 g_stack = cons (cell_nil, cell_nil);
1484 //
\f Environment setup
1487 make_tmps (struct scm* cells)
1490 cells[tmp].type = TCHAR;
1492 cells[tmp_num].type = TNUMBER;
1493 tmp_num2 = g_free++;
1494 cells[tmp_num2].type = TNUMBER;
1506 gc_init_cells () ///((internal))
1508 g_cells = (struct scm *)malloc (2*ARENA_SIZE*sizeof (struct scm));
1514 g_cells += sizeof (struct scm);
1524 gc_init_news () ///((internal))
1528 p -= sizeof (struct scm);
1529 p += ARENA_SIZE * sizeof (struct scm);
1532 g_news = g_cells-1 + ARENA_SIZE;
1535 NTYPE (0) = TVECTOR;
1539 g_news += sizeof (struct scm);
1549 mes_symbols () ///((internal))
1555 #include "mes.mes.symbols.i"
1557 #include "mes.symbols.i"
1560 g_symbol_max = g_free;
1561 make_tmps (g_cells);
1564 for (int i=1; i<g_symbol_max; i++)
1565 g_symbols = cons (i, g_symbols);
1570 #include "mes.mes.symbol-names.i"
1572 #include "mes.symbol-names.i"
1575 a = acons (cell_symbol_mes_version, MAKE_STRING (cstring_to_list (VERSION)), a);
1576 a = acons (cell_symbol_mes_prefix, MAKE_STRING (cstring_to_list (PREFIX)), a);
1578 a = acons (cell_symbol_call_with_values, cell_symbol_call_with_values, a);
1579 a = acons (cell_symbol_current_module, cell_symbol_current_module, a);
1580 a = acons (cell_symbol_call_with_current_continuation, cell_call_with_current_continuation, a);
1584 a = acons (cell_symbol_gnuc, cell_t, a);
1585 a = acons (cell_symbol_mesc, cell_f, a);
1587 a = acons (cell_symbol_gnuc, cell_f, a);
1588 a = acons (cell_symbol_mesc, cell_t, a);
1590 a = acons (cell_closure, a, a);
1596 mes_environment () ///((internal))
1598 SCM a = mes_symbols ();
1599 return mes_g_stack (a);
1603 mes_builtins (SCM a) ///((internal))
1605 #if !__GNUC__ || !_POSIX_SOURCE
1606 #include "mes.mes.i"
1608 // Do not sort: Order of these includes define builtins
1609 #include "posix.mes.i"
1610 #include "math.mes.i"
1611 #include "lib.mes.i"
1612 #include "vector.mes.i"
1614 #include "reader.mes.i"
1616 #include "gc.mes.environment.i"
1617 #include "lib.mes.environment.i"
1618 #include "math.mes.environment.i"
1619 #include "mes.mes.environment.i"
1620 #include "posix.mes.environment.i"
1621 #include "reader.mes.environment.i"
1622 #include "vector.mes.environment.i"
1626 // Do not sort: Order of these includes define builtins
1634 #include "gc.environment.i"
1635 #include "lib.environment.i"
1636 #include "math.environment.i"
1637 #include "mes.environment.i"
1638 #include "posix.environment.i"
1639 #include "reader.environment.i"
1640 #include "vector.environment.i"
1645 fputs ("functions: ", STDERR);
1646 fputs (itoa (g_function), STDERR);
1647 fputs ("\n", STDERR);
1648 for (int i = 0; i < g_function; i++)
1650 fputs ("[", STDERR);
1651 fputs (itoa (i), STDERR);
1652 fputs ("]: ", STDERR);
1653 fputs (g_functions[i].name, STDERR);
1654 fputs ("\n", STDERR);
1656 fputs ("\n", STDERR);
1662 SCM read_input_file_env (SCM);
1665 load_env (SCM a) ///((internal))
1671 if (getenv ("MES_BOOT"))
1672 strcpy (boot, getenv ("MES_BOOT"));
1674 strcpy (boot, "boot-0.scm");
1675 if (getenv ("MES_PREFIX"))
1677 strcpy (buf, getenv ("MES_PREFIX"));
1678 strcpy (buf + strlen (buf), "/module");
1679 strcpy (buf + strlen (buf), "/mes/");
1680 strcpy (buf + strlen (buf), boot);
1681 if (getenv ("MES_DEBUG"))
1683 eputs ("MES_PREFIX reading boot-0:");
1687 g_stdin = open (buf, O_RDONLY);
1691 char const *prefix = MODULEDIR "mes/";
1692 strcpy (buf, prefix);
1693 strcpy (buf + strlen (buf), boot);
1694 if (getenv ("MES_DEBUG"))
1696 eputs ("MODULEDIR reading boot-0:");
1700 g_stdin = open (buf, O_RDONLY);
1704 strcpy (buf, "module/mes/");
1705 strcpy (buf + strlen (buf), boot);
1706 if (getenv ("MES_DEBUG"))
1708 eputs (". reading boot-0:");
1712 g_stdin = open (buf, O_RDONLY);
1716 if (getenv ("MES_DEBUG"))
1718 eputs (". reading boot-0:");
1722 g_stdin = open (boot, O_RDONLY);
1726 eputs ("mes: boot failed: no such file: ");
1733 r0 = mes_builtins (r0);
1734 r2 = read_input_file_env (r0);
1740 bload_env (SCM a) ///((internal))
1743 char *mo = "mes/read-0-32.mo";
1744 g_stdin = open ("module/mes/read-0-32.mo", O_RDONLY);
1745 char *read0 = MODULEDIR "mes/read-0-32.mo";
1746 g_stdin = g_stdin >= 0 ? g_stdin : open (read0, O_RDONLY);
1748 char *mo ="mes/read-0.mo";
1749 g_stdin = open ("module/mes/read-0.mo", O_RDONLY);
1750 g_stdin = g_stdin >= 0 ? g_stdin : open (MODULEDIR "mes/read-0.mo", O_RDONLY);
1755 eputs ("no such file: ");eputs (mo);eputs ("\n");
1758 assert (getchar () == 'M');
1759 assert (getchar () == 'E');
1760 assert (getchar () == 'S');
1763 eputs ("*GOT MES*\n");
1764 g_stack = getchar () << 8;
1765 g_stack += getchar ();
1767 char *p = (char*)g_cells;
1774 g_free = (p-(char*)g_cells) / sizeof (struct scm);
1778 r0 = mes_builtins (r0);
1781 set_env_x (cell_symbol_gnuc, cell_t, r0);
1782 set_env_x (cell_symbol_mesc, cell_f, r0);
1784 set_env_x (cell_symbol_gnuc, cell_f, r0);
1785 set_env_x (cell_symbol_mesc, cell_t, r0);
1790 eputs ("symbols: ");
1792 while (s && s != cell_nil)
1794 display_error_ (CAR (s));
1799 eputs ("functions: ");
1800 eputs (itoa (g_function));
1802 for (int i = 0; i < g_function; i++)
1807 eputs (g_functions[i].name);
1819 main (int argc, char *argv[])
1822 if (p = getenv ("MES_DEBUG"))
1826 eputs (";;; MODULEDIR=");
1830 if (p = getenv ("MES_MAX_ARENA"))
1831 MAX_ARENA_SIZE = atoi (p);
1832 if (p = getenv ("MES_ARENA"))
1833 ARENA_SIZE = atoi (p);
1834 GC_SAFETY = ARENA_SIZE / 400;
1835 if (argc > 1 && !strcmp (argv[1], "--help"))
1836 return puts ("Usage: mes [--dump|--load] < FILE\n");
1837 if (argc > 1 && !strcmp (argv[1], "--version"))
1839 puts ("Mes ");puts (VERSION);puts ("\n");
1844 r0 = mes_environment ();
1846 SCM program = (argc > 1 && !strcmp (argv[1], "--load"))
1847 ? bload_env (r0) : load_env (r0);
1848 g_tiny = argc > 2 && !strcmp (argv[2], "--tiny");
1849 if (argc > 1 && !strcmp (argv[1], "--dump"))
1853 for (int i=argc-1; i>=0; i--) lst = cons (MAKE_STRING (cstring_to_list (argv[i])), lst);
1854 r0 = acons (cell_symbol_argv, lst, r0); // FIXME
1855 r0 = acons (cell_symbol_argv, lst, r0);
1856 push_cc (r2, cell_unspecified, r0, cell_unspecified);
1860 eputs ("\ngc stats: [");
1861 eputs (itoa (g_free));
1866 eputs ("program: ");
1872 eputs ("symbols: ");
1873 write_error_ (g_symbols);
1876 r3 = cell_vm_begin_expand;
1885 eputs ("\ngc stats: [");
1886 eputs (itoa (g_free));
1889 eputs (itoa (g_free));