objtuple.c 7.65 KB
Newer Older
1
#include <string.h>
2
3
4
5
6
#include <assert.h>

#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
7
#include "qstr.h"
8
9
#include "obj.h"
#include "runtime0.h"
10
#include "runtime.h"
11
#include "objtuple.h"
12

13
STATIC mp_obj_t mp_obj_new_tuple_iterator(mp_obj_tuple_t *tuple, int cur);
14
15
16
17

/******************************************************************************/
/* tuple                                                                      */

18
void tuple_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
19
20
21
22
23
24
    mp_obj_tuple_t *o = o_in;
    print(env, "(");
    for (int i = 0; i < o->len; i++) {
        if (i > 0) {
            print(env, ", ");
        }
25
        mp_obj_print_helper(print, env, o->items[i], PRINT_REPR);
26
27
28
29
30
31
32
    }
    if (o->len == 1) {
        print(env, ",");
    }
    print(env, ")");
}

33
STATIC mp_obj_t tuple_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
34
35
    // TODO check n_kw == 0

36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
    switch (n_args) {
        case 0:
            // return a empty tuple
            return mp_const_empty_tuple;

        case 1:
        {
            // 1 argument, an iterable from which we make a new tuple
            if (MP_OBJ_IS_TYPE(args[0], &tuple_type)) {
                return args[0];
            }

            // TODO optimise for cases where we know the length of the iterator

            uint alloc = 4;
            uint len = 0;
            mp_obj_t *items = m_new(mp_obj_t, alloc);

            mp_obj_t iterable = rt_getiter(args[0]);
            mp_obj_t item;
            while ((item = rt_iternext(iterable)) != mp_const_stop_iteration) {
                if (len >= alloc) {
                    items = m_renew(mp_obj_t, items, alloc, alloc * 2);
                    alloc *= 2;
                }
                items[len++] = item;
            }

            mp_obj_t tuple = mp_obj_new_tuple(len, items);
            m_free(items, alloc);

            return tuple;
        }

        default:
71
            nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "tuple takes at most 1 argument, %d given", n_args));
72
73
74
    }
}

Paul Sokolovsky's avatar
Paul Sokolovsky committed
75
// Don't pass RT_BINARY_OP_NOT_EQUAL here
76
STATIC bool tuple_cmp_helper(int op, mp_obj_t self_in, mp_obj_t another_in) {
Paul Sokolovsky's avatar
Paul Sokolovsky committed
77
78
79
80
81
82
83
84
85
86
    assert(MP_OBJ_IS_TYPE(self_in, &tuple_type));
    if (!MP_OBJ_IS_TYPE(another_in, &tuple_type)) {
        return false;
    }
    mp_obj_tuple_t *self = self_in;
    mp_obj_tuple_t *another = another_in;

    return mp_seq_cmp_objs(op, self->items, self->len, another->items, another->len);
}

87
mp_obj_t tuple_unary_op(int op, mp_obj_t self_in) {
88
89
    mp_obj_tuple_t *self = self_in;
    switch (op) {
90
91
        case RT_UNARY_OP_BOOL: return MP_BOOL(self->len != 0);
        case RT_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(self->len);
92
93
94
95
        default: return MP_OBJ_NULL; // op not supported for None
    }
}

96
mp_obj_t tuple_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
97
98
99
100
    mp_obj_tuple_t *o = lhs;
    switch (op) {
        case RT_BINARY_OP_SUBSCR:
        {
101
102
103
#if MICROPY_ENABLE_SLICE
            if (MP_OBJ_IS_TYPE(rhs, &slice_type)) {
                machine_uint_t start, stop;
Paul Sokolovsky's avatar
Paul Sokolovsky committed
104
105
106
                if (!m_seq_get_fast_slice_indexes(o->len, rhs, &start, &stop)) {
                    assert(0);
                }
107
108
109
110
111
                mp_obj_tuple_t *res = mp_obj_new_tuple(stop - start, NULL);
                m_seq_copy(res->items, o->items + start, res->len, mp_obj_t);
                return res;
            }
#endif
112
            uint index = mp_get_index(o->base.type, o->len, rhs, false);
113
114
            return o->items[index];
        }
Paul Sokolovsky's avatar
Paul Sokolovsky committed
115
116
        case RT_BINARY_OP_ADD:
        {
117
            if (!mp_obj_is_subclass_fast(mp_obj_get_type(rhs), (mp_obj_t)&tuple_type)) {
Paul Sokolovsky's avatar
Paul Sokolovsky committed
118
119
120
121
122
123
124
                return NULL;
            }
            mp_obj_tuple_t *p = rhs;
            mp_obj_tuple_t *s = mp_obj_new_tuple(o->len + p->len, NULL);
            m_seq_cat(s->items, o->items, o->len, p->items, p->len, mp_obj_t);
            return s;
        }
125
126
127
128
129
130
131
132
133
134
        case RT_BINARY_OP_MULTIPLY:
        {
            if (!MP_OBJ_IS_SMALL_INT(rhs)) {
                return NULL;
            }
            int n = MP_OBJ_SMALL_INT_VALUE(rhs);
            mp_obj_tuple_t *s = mp_obj_new_tuple(o->len * n, NULL);
            mp_seq_multiply(o->items, sizeof(*o->items), o->len, n, s->items);
            return s;
        }
Paul Sokolovsky's avatar
Paul Sokolovsky committed
135
136
137
138
139
140
141
142
143
        case RT_BINARY_OP_EQUAL:
        case RT_BINARY_OP_LESS:
        case RT_BINARY_OP_LESS_EQUAL:
        case RT_BINARY_OP_MORE:
        case RT_BINARY_OP_MORE_EQUAL:
            return MP_BOOL(tuple_cmp_helper(op, lhs, rhs));
        case RT_BINARY_OP_NOT_EQUAL:
            return MP_BOOL(!tuple_cmp_helper(RT_BINARY_OP_EQUAL, lhs, rhs));

144
145
146
147
148
149
        default:
            // op not supported
            return NULL;
    }
}

150
STATIC mp_obj_t tuple_getiter(mp_obj_t o_in) {
151
152
153
    return mp_obj_new_tuple_iterator(o_in, 0);
}

154
STATIC mp_obj_t tuple_count(mp_obj_t self_in, mp_obj_t value) {
155
156
157
158
    assert(MP_OBJ_IS_TYPE(self_in, &tuple_type));
    mp_obj_tuple_t *self = self_in;
    return mp_seq_count_obj(self->items, self->len, value);
}
159
STATIC MP_DEFINE_CONST_FUN_OBJ_2(tuple_count_obj, tuple_count);
160

161
STATIC mp_obj_t tuple_index(uint n_args, const mp_obj_t *args) {
Paul Sokolovsky's avatar
Paul Sokolovsky committed
162
163
164
165
    assert(MP_OBJ_IS_TYPE(args[0], &tuple_type));
    mp_obj_tuple_t *self = args[0];
    return mp_seq_index_obj(self->items, self->len, n_args, args);
}
166
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(tuple_index_obj, 2, 4, tuple_index);
Paul Sokolovsky's avatar
Paul Sokolovsky committed
167

168
STATIC const mp_method_t tuple_type_methods[] = {
169
    { "count", &tuple_count_obj },
Paul Sokolovsky's avatar
Paul Sokolovsky committed
170
171
172
173
    { "index", &tuple_index_obj },
    { NULL, NULL }, // end-of-list sentinel
};

174
const mp_obj_type_t tuple_type = {
175
    { &mp_type_type },
176
    .name = MP_QSTR_tuple,
177
178
    .print = tuple_print,
    .make_new = tuple_make_new,
179
    .unary_op = tuple_unary_op,
180
181
    .binary_op = tuple_binary_op,
    .getiter = tuple_getiter,
Paul Sokolovsky's avatar
Paul Sokolovsky committed
182
    .methods = tuple_type_methods,
183
184
};

185
// the zero-length tuple
186
STATIC const mp_obj_tuple_t empty_tuple_obj = {{&tuple_type}, 0};
187
188
const mp_obj_t mp_const_empty_tuple = (mp_obj_t)&empty_tuple_obj;

189
mp_obj_t mp_obj_new_tuple(uint n, const mp_obj_t *items) {
190
191
192
    if (n == 0) {
        return mp_const_empty_tuple;
    }
193
194
195
    mp_obj_tuple_t *o = m_new_obj_var(mp_obj_tuple_t, mp_obj_t, n);
    o->base.type = &tuple_type;
    o->len = n;
John R. Lenton's avatar
John R. Lenton committed
196
197
198
199
    if (items) {
        for (int i = 0; i < n; i++) {
            o->items[i] = items[i];
        }
200
201
202
203
    }
    return o;
}

204
void mp_obj_tuple_get(mp_obj_t self_in, uint *len, mp_obj_t **items) {
205
    assert(MP_OBJ_IS_TYPE(self_in, &tuple_type));
206
    mp_obj_tuple_t *self = self_in;
John R. Lenton's avatar
John R. Lenton committed
207
208
209
210
211
212
213
214
215
216
217
218
    if (len) {
        *len = self->len;
    }
    if (items) {
        *items = &self->items[0];
    }
}

void mp_obj_tuple_del(mp_obj_t self_in) {
    assert(MP_OBJ_IS_TYPE(self_in, &tuple_type));
    mp_obj_tuple_t *self = self_in;
    m_del_var(mp_obj_tuple_t, mp_obj_t, self->len, self);
219
220
}

221
222
223
224
225
226
227
228
229
/******************************************************************************/
/* tuple iterator                                                             */

typedef struct _mp_obj_tuple_it_t {
    mp_obj_base_t base;
    mp_obj_tuple_t *tuple;
    machine_uint_t cur;
} mp_obj_tuple_it_t;

230
STATIC mp_obj_t tuple_it_iternext(mp_obj_t self_in) {
231
232
233
234
235
236
237
238
239
240
    mp_obj_tuple_it_t *self = self_in;
    if (self->cur < self->tuple->len) {
        mp_obj_t o_out = self->tuple->items[self->cur];
        self->cur += 1;
        return o_out;
    } else {
        return mp_const_stop_iteration;
    }
}

241
STATIC const mp_obj_type_t tuple_it_type = {
242
    { &mp_type_type },
243
    .name = MP_QSTR_iterator,
244
    .iternext = tuple_it_iternext,
245
246
};

247
STATIC mp_obj_t mp_obj_new_tuple_iterator(mp_obj_tuple_t *tuple, int cur) {
248
249
250
251
252
253
    mp_obj_tuple_it_t *o = m_new_obj(mp_obj_tuple_it_t);
    o->base.type = &tuple_it_type;
    o->tuple = tuple;
    o->cur = cur;
    return o;
}