1/*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2015 Damien P. George
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27#include "py/objtuple.h"
28
29#if MICROPY_PY_ATTRTUPLE || MICROPY_PY_COLLECTIONS
30
31// this helper function is used by collections.namedtuple
32#if !MICROPY_PY_COLLECTIONS
33STATIC
34#endif
35void mp_obj_attrtuple_print_helper(const mp_print_t *print, const qstr *fields, mp_obj_tuple_t *o) {
36 mp_print_str(print, "(");
37 for (size_t i = 0; i < o->len; i++) {
38 if (i > 0) {
39 mp_print_str(print, ", ");
40 }
41 mp_printf(print, "%q=", fields[i]);
42 mp_obj_print_helper(print, o->items[i], PRINT_REPR);
43 }
44 mp_print_str(print, ")");
45}
46
47#endif
48
49#if MICROPY_PY_ATTRTUPLE
50
51STATIC void mp_obj_attrtuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
52 (void)kind;
53 mp_obj_tuple_t *o = MP_OBJ_TO_PTR(o_in);
54 const qstr *fields = (const qstr *)MP_OBJ_TO_PTR(o->items[o->len]);
55 mp_obj_attrtuple_print_helper(print, fields, o);
56}
57
58STATIC void mp_obj_attrtuple_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
59 if (dest[0] == MP_OBJ_NULL) {
60 // load attribute
61 mp_obj_tuple_t *self = MP_OBJ_TO_PTR(self_in);
62 size_t len = self->len;
63 const qstr *fields = (const qstr *)MP_OBJ_TO_PTR(self->items[len]);
64 for (size_t i = 0; i < len; i++) {
65 if (fields[i] == attr) {
66 dest[0] = self->items[i];
67 return;
68 }
69 }
70 }
71}
72
73mp_obj_t mp_obj_new_attrtuple(const qstr *fields, size_t n, const mp_obj_t *items) {
74 mp_obj_tuple_t *o = m_new_obj_var(mp_obj_tuple_t, mp_obj_t, n + 1);
75 o->base.type = &mp_type_attrtuple;
76 o->len = n;
77 for (size_t i = 0; i < n; i++) {
78 o->items[i] = items[i];
79 }
80 o->items[n] = MP_OBJ_FROM_PTR(fields);
81 return MP_OBJ_FROM_PTR(o);
82}
83
84const mp_obj_type_t mp_type_attrtuple = {
85 { &mp_type_type },
86 .name = MP_QSTR_tuple, // reuse tuple to save on a qstr
87 .print = mp_obj_attrtuple_print,
88 .unary_op = mp_obj_tuple_unary_op,
89 .binary_op = mp_obj_tuple_binary_op,
90 .attr = mp_obj_attrtuple_attr,
91 .subscr = mp_obj_tuple_subscr,
92 .getiter = mp_obj_tuple_getiter,
93};
94
95#endif // MICROPY_PY_ATTRTUPLE
96