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 #define DBG(...) printf (__VA_ARGS__)
23 struct ao_lisp_funcs {
24 void (*print)(ao_poly);
25 void (*patom)(ao_poly);
28 static const struct ao_lisp_funcs ao_lisp_funcs[AO_LISP_NUM_TYPE] = {
30 .print = ao_lisp_cons_print,
31 .patom = ao_lisp_cons_patom,
34 .print = ao_lisp_string_print,
35 .patom = ao_lisp_string_patom,
38 .print = ao_lisp_int_print,
39 .patom = ao_lisp_int_print,
42 .print = ao_lisp_atom_print,
43 .patom = ao_lisp_atom_print,
46 .print = ao_lisp_builtin_print,
47 .patom = ao_lisp_builtin_print,
50 .print = ao_lisp_frame_print,
51 .patom = ao_lisp_frame_print,
54 .print = ao_lisp_lambda_print,
55 .patom = ao_lisp_lambda_print,
59 static const struct ao_lisp_funcs *
62 uint8_t type = ao_lisp_poly_type(p);
64 if (type < AO_LISP_NUM_TYPE)
65 return &ao_lisp_funcs[type];
70 ao_lisp_poly_print(ao_poly p)
72 const struct ao_lisp_funcs *f = funcs(p);
79 ao_lisp_poly_patom(ao_poly p)
81 const struct ao_lisp_funcs *f = funcs(p);
88 ao_lisp_ref(ao_poly poly) {
89 if (poly == AO_LISP_NIL)
91 if (poly & AO_LISP_CONST)
92 return (void *) (AO_LISP_CONST_BASE + (poly & AO_LISP_REF_MASK));
93 return (void *) (AO_LISP_POOL_BASE + (poly & AO_LISP_REF_MASK));
97 ao_lisp_poly(const void *addr, ao_poly type) {
98 const uint8_t *a = addr;
101 if (AO_LISP_IS_CONST(a))
102 return AO_LISP_CONST | (a - AO_LISP_CONST_BASE) | type;
103 return (a - AO_LISP_POOL_BASE) | type;