2 * Copyright © 2016 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
18 builtin_size(void *addr)
21 return sizeof (struct ao_lisp_builtin);
25 builtin_mark(void *addr)
31 builtin_move(void *addr)
36 const struct ao_lisp_type ao_lisp_builtin_type = {
42 #ifdef AO_LISP_MAKE_CONST
43 char *ao_lisp_builtin_name(enum ao_lisp_builtin_id b) {
46 char *ao_lisp_args_name(uint8_t args) {
50 static const ao_poly builtin_names[] = {
51 [builtin_eval] = _ao_lisp_atom_eval,
52 [builtin_read] = _ao_lisp_atom_read,
53 [builtin_lambda] = _ao_lisp_atom_lambda,
54 [builtin_lexpr] = _ao_lisp_atom_lexpr,
55 [builtin_nlambda] = _ao_lisp_atom_nlambda,
56 [builtin_macro] = _ao_lisp_atom_macro,
57 [builtin_car] = _ao_lisp_atom_car,
58 [builtin_cdr] = _ao_lisp_atom_cdr,
59 [builtin_cons] = _ao_lisp_atom_cons,
60 [builtin_last] = _ao_lisp_atom_last,
61 [builtin_quote] = _ao_lisp_atom_quote,
62 [builtin_set] = _ao_lisp_atom_set,
63 [builtin_setq] = _ao_lisp_atom_setq,
64 [builtin_cond] = _ao_lisp_atom_cond,
65 [builtin_progn] = _ao_lisp_atom_progn,
66 [builtin_while] = _ao_lisp_atom_while,
67 [builtin_print] = _ao_lisp_atom_print,
68 [builtin_patom] = _ao_lisp_atom_patom,
69 [builtin_plus] = _ao_lisp_atom_2b,
70 [builtin_minus] = _ao_lisp_atom_2d,
71 [builtin_times] = _ao_lisp_atom_2a,
72 [builtin_divide] = _ao_lisp_atom_2f,
73 [builtin_mod] = _ao_lisp_atom_25,
74 [builtin_equal] = _ao_lisp_atom_3d,
75 [builtin_less] = _ao_lisp_atom_3c,
76 [builtin_greater] = _ao_lisp_atom_3e,
77 [builtin_less_equal] = _ao_lisp_atom_3c3d,
78 [builtin_greater_equal] = _ao_lisp_atom_3e3d,
79 [builtin_delay] = _ao_lisp_atom_delay,
80 [builtin_led] = _ao_lisp_atom_led,
84 ao_lisp_builtin_name(enum ao_lisp_builtin_id b) {
85 if (b < _builtin_last)
86 return ao_lisp_poly_atom(builtin_names[b])->name;
90 static const ao_poly ao_lisp_args_atoms[] = {
91 [AO_LISP_FUNC_LAMBDA] = _ao_lisp_atom_lambda,
92 [AO_LISP_FUNC_LEXPR] = _ao_lisp_atom_lexpr,
93 [AO_LISP_FUNC_NLAMBDA] = _ao_lisp_atom_nlambda,
94 [AO_LISP_FUNC_MACRO] = _ao_lisp_atom_macro,
98 ao_lisp_args_name(uint8_t args)
100 if (args < sizeof ao_lisp_args_atoms / sizeof ao_lisp_args_atoms[0])
101 return ao_lisp_poly_atom(ao_lisp_args_atoms[args])->name;
107 ao_lisp_builtin_print(ao_poly b)
109 struct ao_lisp_builtin *builtin = ao_lisp_poly_builtin(b);
110 printf("[builtin %s %s]",
111 ao_lisp_args_name(builtin->args),
112 ao_lisp_builtin_name(builtin->func));
116 ao_lisp_check_argc(ao_poly name, struct ao_lisp_cons *cons, int min, int max)
120 while (cons && argc <= max) {
122 cons = ao_lisp_poly_cons(cons->cdr);
124 if (argc < min || argc > max)
125 return ao_lisp_error(AO_LISP_INVALID, "%s: invalid arg count", ao_lisp_poly_atom(name)->name);
126 return _ao_lisp_atom_t;
130 ao_lisp_arg(struct ao_lisp_cons *cons, int argc)
137 cons = ao_lisp_poly_cons(cons->cdr);
143 ao_lisp_check_argt(ao_poly name, struct ao_lisp_cons *cons, int argc, int type, int nil_ok)
145 ao_poly car = ao_lisp_arg(cons, argc);
147 if ((!car && !nil_ok) || ao_lisp_poly_type(car) != type)
148 return ao_lisp_error(AO_LISP_INVALID, "%s: invalid type for arg %d", ao_lisp_poly_atom(name)->name, argc);
149 return _ao_lisp_atom_t;
153 ao_lisp_car(struct ao_lisp_cons *cons)
155 if (!ao_lisp_check_argc(_ao_lisp_atom_car, cons, 1, 1))
157 if (!ao_lisp_check_argt(_ao_lisp_atom_car, cons, 0, AO_LISP_CONS, 0))
159 return ao_lisp_poly_cons(cons->car)->car;
163 ao_lisp_cdr(struct ao_lisp_cons *cons)
165 if (!ao_lisp_check_argc(_ao_lisp_atom_cdr, cons, 1, 1))
167 if (!ao_lisp_check_argt(_ao_lisp_atom_cdr, cons, 0, AO_LISP_CONS, 0))
169 return ao_lisp_poly_cons(cons->car)->cdr;
173 ao_lisp_cons(struct ao_lisp_cons *cons)
176 if(!ao_lisp_check_argc(_ao_lisp_atom_cons, cons, 2, 2))
178 if (!ao_lisp_check_argt(_ao_lisp_atom_cons, cons, 1, AO_LISP_CONS, 1))
180 car = ao_lisp_arg(cons, 0);
181 cdr = ao_lisp_arg(cons, 1);
182 return ao_lisp_cons_poly(ao_lisp_cons_cons(car, ao_lisp_poly_cons(cdr)));
186 ao_lisp_last(struct ao_lisp_cons *cons)
189 if (!ao_lisp_check_argc(_ao_lisp_atom_last, cons, 1, 1))
191 if (!ao_lisp_check_argt(_ao_lisp_atom_last, cons, 0, AO_LISP_CONS, 1))
193 l = ao_lisp_arg(cons, 0);
195 struct ao_lisp_cons *list = ao_lisp_poly_cons(l);
204 ao_lisp_quote(struct ao_lisp_cons *cons)
206 if (!ao_lisp_check_argc(_ao_lisp_atom_quote, cons, 1, 1))
208 return ao_lisp_arg(cons, 0);
212 ao_lisp_set(struct ao_lisp_cons *cons)
214 if (!ao_lisp_check_argc(_ao_lisp_atom_set, cons, 2, 2))
216 if (!ao_lisp_check_argt(_ao_lisp_atom_set, cons, 0, AO_LISP_ATOM, 0))
219 return ao_lisp_atom_set(ao_lisp_arg(cons, 0), ao_lisp_arg(cons, 1));
223 ao_lisp_setq(struct ao_lisp_cons *cons)
225 struct ao_lisp_cons *expand = 0;
226 if (!ao_lisp_check_argc(_ao_lisp_atom_setq, cons, 2, 2))
228 expand = ao_lisp_cons_cons(_ao_lisp_atom_set,
229 ao_lisp_cons_cons(ao_lisp_cons_poly(ao_lisp_cons_cons(_ao_lisp_atom_quote,
230 ao_lisp_cons_cons(cons->car, NULL))),
231 ao_lisp_poly_cons(cons->cdr)));
232 return ao_lisp_cons_poly(expand);
236 ao_lisp_cond(struct ao_lisp_cons *cons)
238 ao_lisp_set_cond(cons);
243 ao_lisp_progn(struct ao_lisp_cons *cons)
245 ao_lisp_stack->state = eval_progn;
246 ao_lisp_stack->sexprs = ao_lisp_cons_poly(cons);
251 ao_lisp_while(struct ao_lisp_cons *cons)
253 ao_lisp_stack->state = eval_while;
254 ao_lisp_stack->sexprs = ao_lisp_cons_poly(cons);
259 ao_lisp_print(struct ao_lisp_cons *cons)
261 ao_poly val = AO_LISP_NIL;
264 ao_lisp_poly_print(val);
265 cons = ao_lisp_poly_cons(cons->cdr);
274 ao_lisp_patom(struct ao_lisp_cons *cons)
276 ao_poly val = AO_LISP_NIL;
279 ao_lisp_poly_patom(val);
280 cons = ao_lisp_poly_cons(cons->cdr);
286 ao_lisp_math(struct ao_lisp_cons *cons, enum ao_lisp_builtin_id op)
288 ao_poly ret = AO_LISP_NIL;
291 ao_poly car = cons->car;
292 uint8_t rt = ao_lisp_poly_type(ret);
293 uint8_t ct = ao_lisp_poly_type(car);
295 cons = ao_lisp_poly_cons(cons->cdr);
297 if (rt == AO_LISP_NIL)
300 else if (rt == AO_LISP_INT && ct == AO_LISP_INT) {
301 int r = ao_lisp_poly_int(ret);
302 int c = ao_lisp_poly_int(car);
316 return ao_lisp_error(AO_LISP_DIVIDE_BY_ZERO, "divide by zero");
321 return ao_lisp_error(AO_LISP_DIVIDE_BY_ZERO, "mod by zero");
327 ret = ao_lisp_int_poly(r);
330 else if (rt == AO_LISP_STRING && ct == AO_LISP_STRING && op == builtin_plus)
331 ret = ao_lisp_string_poly(ao_lisp_string_cat(ao_lisp_poly_string(ret),
332 ao_lisp_poly_string(car)));
334 return ao_lisp_error(AO_LISP_INVALID, "invalid args");
340 ao_lisp_plus(struct ao_lisp_cons *cons)
342 return ao_lisp_math(cons, builtin_plus);
346 ao_lisp_minus(struct ao_lisp_cons *cons)
348 return ao_lisp_math(cons, builtin_minus);
352 ao_lisp_times(struct ao_lisp_cons *cons)
354 return ao_lisp_math(cons, builtin_times);
358 ao_lisp_divide(struct ao_lisp_cons *cons)
360 return ao_lisp_math(cons, builtin_divide);
364 ao_lisp_mod(struct ao_lisp_cons *cons)
366 return ao_lisp_math(cons, builtin_mod);
370 ao_lisp_compare(struct ao_lisp_cons *cons, enum ao_lisp_builtin_id op)
375 return _ao_lisp_atom_t;
378 cons = ao_lisp_poly_cons(cons->cdr);
380 ao_poly right = cons->car;
382 if (op == builtin_equal) {
386 uint8_t lt = ao_lisp_poly_type(left);
387 uint8_t rt = ao_lisp_poly_type(right);
388 if (lt == AO_LISP_INT && rt == AO_LISP_INT) {
389 int l = ao_lisp_poly_int(left);
390 int r = ao_lisp_poly_int(right);
397 case builtin_greater:
401 case builtin_less_equal:
405 case builtin_greater_equal:
412 } else if (lt == AO_LISP_STRING && rt == AO_LISP_STRING) {
413 int c = strcmp(ao_lisp_poly_string(left),
414 ao_lisp_poly_string(right));
420 case builtin_greater:
424 case builtin_less_equal:
428 case builtin_greater_equal:
438 cons = ao_lisp_poly_cons(cons->cdr);
440 return _ao_lisp_atom_t;
444 ao_lisp_equal(struct ao_lisp_cons *cons)
446 return ao_lisp_compare(cons, builtin_equal);
450 ao_lisp_less(struct ao_lisp_cons *cons)
452 return ao_lisp_compare(cons, builtin_less);
456 ao_lisp_greater(struct ao_lisp_cons *cons)
458 return ao_lisp_compare(cons, builtin_greater);
462 ao_lisp_less_equal(struct ao_lisp_cons *cons)
464 return ao_lisp_compare(cons, builtin_less_equal);
468 ao_lisp_greater_equal(struct ao_lisp_cons *cons)
470 return ao_lisp_compare(cons, builtin_greater_equal);
474 ao_lisp_led(struct ao_lisp_cons *cons)
477 if (!ao_lisp_check_argc(_ao_lisp_atom_led, cons, 1, 1))
479 if (!ao_lisp_check_argt(_ao_lisp_atom_led, cons, 0, AO_LISP_INT, 0))
481 led = ao_lisp_arg(cons, 0);
482 ao_lisp_os_led(ao_lisp_poly_int(led));
487 ao_lisp_delay(struct ao_lisp_cons *cons)
490 if (!ao_lisp_check_argc(_ao_lisp_atom_led, cons, 1, 1))
492 if (!ao_lisp_check_argt(_ao_lisp_atom_led, cons, 0, AO_LISP_INT, 0))
494 delay = ao_lisp_arg(cons, 0);
495 ao_lisp_os_delay(ao_lisp_poly_int(delay));
500 ao_lisp_do_eval(struct ao_lisp_cons *cons)
502 if (!ao_lisp_check_argc(_ao_lisp_atom_eval, cons, 1, 1))
504 ao_lisp_stack->state = eval_sexpr;
509 ao_lisp_do_read(struct ao_lisp_cons *cons)
511 if (!ao_lisp_check_argc(_ao_lisp_atom_read, cons, 0, 0))
513 return ao_lisp_read();
516 const ao_lisp_func_t ao_lisp_builtins[] = {
517 [builtin_eval] = ao_lisp_do_eval,
518 [builtin_read] = ao_lisp_do_read,
519 [builtin_lambda] = ao_lisp_lambda,
520 [builtin_lexpr] = ao_lisp_lexpr,
521 [builtin_nlambda] = ao_lisp_nlambda,
522 [builtin_macro] = ao_lisp_macro,
523 [builtin_car] = ao_lisp_car,
524 [builtin_cdr] = ao_lisp_cdr,
525 [builtin_cons] = ao_lisp_cons,
526 [builtin_last] = ao_lisp_last,
527 [builtin_quote] = ao_lisp_quote,
528 [builtin_set] = ao_lisp_set,
529 [builtin_setq] = ao_lisp_setq,
530 [builtin_cond] = ao_lisp_cond,
531 [builtin_progn] = ao_lisp_progn,
532 [builtin_while] = ao_lisp_while,
533 [builtin_print] = ao_lisp_print,
534 [builtin_patom] = ao_lisp_patom,
535 [builtin_plus] = ao_lisp_plus,
536 [builtin_minus] = ao_lisp_minus,
537 [builtin_times] = ao_lisp_times,
538 [builtin_divide] = ao_lisp_divide,
539 [builtin_mod] = ao_lisp_mod,
540 [builtin_equal] = ao_lisp_equal,
541 [builtin_less] = ao_lisp_less,
542 [builtin_greater] = ao_lisp_greater,
543 [builtin_less_equal] = ao_lisp_less_equal,
544 [builtin_greater_equal] = ao_lisp_greater_equal,
545 [builtin_led] = ao_lisp_led,
546 [builtin_delay] = ao_lisp_delay,