obj.c 10.6 KB
Newer Older
1
2
3
4
5
6
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>

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

13
mp_obj_type_t *mp_obj_get_type(mp_obj_t o_in) {
Damien George's avatar
Damien George committed
14
    if (MP_OBJ_IS_SMALL_INT(o_in)) {
15
        return (mp_obj_t)&mp_type_int;
16
    } else if (MP_OBJ_IS_QSTR(o_in)) {
17
        return (mp_obj_t)&mp_type_str;
Damien George's avatar
Damien George committed
18
19
20
21
22
23
    } else {
        mp_obj_base_t *o = o_in;
        return (mp_obj_t)o->type;
    }
}

24
const char *mp_obj_get_type_str(mp_obj_t o_in) {
25
    return qstr_str(mp_obj_get_type(o_in)->name);
26
27
28
29
30
31
32
33
34
}

void printf_wrapper(void *env, const char *fmt, ...) {
    va_list args;
    va_start(args, fmt);
    vprintf(fmt, args);
    va_end(args);
}

35
void mp_obj_print_helper(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
36
37
38
    mp_obj_type_t *type = mp_obj_get_type(o_in);
    if (type->print != NULL) {
        type->print(print, env, o_in, kind);
39
    } else {
40
        print(env, "<%s>", qstr_str(type->name));
41
42
43
    }
}

44
45
void mp_obj_print(mp_obj_t o_in, mp_print_kind_t kind) {
    mp_obj_print_helper(printf_wrapper, NULL, o_in, kind);
46
47
}

48
49
// helper function to print an exception with traceback
void mp_obj_print_exception(mp_obj_t exc) {
50
    if (mp_obj_is_exception_instance(exc)) {
51
52
53
        machine_uint_t n, *values;
        mp_obj_exception_get_traceback(exc, &n, &values);
        if (n > 0) {
54
            assert(n % 3 == 0);
55
56
            printf("Traceback (most recent call last):\n");
            for (int i = n - 3; i >= 0; i -= 3) {
57
#if MICROPY_ENABLE_SOURCE_LINE
58
                printf("  File \"%s\", line %d, in %s\n", qstr_str(values[i]), (int)values[i + 1], qstr_str(values[i + 2]));
59
60
61
#else
                printf("  File \"%s\", in %s\n", qstr_str(values[i]), qstr_str(values[i + 2]));
#endif
62
63
64
            }
        }
    }
65
    mp_obj_print(exc, PRINT_EXC);
66
67
68
    printf("\n");
}

Damien George's avatar
Damien George committed
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
int mp_obj_is_true(mp_obj_t arg) {
    if (arg == mp_const_false) {
        return 0;
    } else if (arg == mp_const_true) {
        return 1;
    } else if (arg == mp_const_none) {
        return 0;
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        if (MP_OBJ_SMALL_INT_VALUE(arg) == 0) {
            return 0;
        } else {
            return 1;
        }
    } else {
        mp_obj_type_t *type = mp_obj_get_type(arg);
        if (type->unary_op != NULL) {
            mp_obj_t result = type->unary_op(MP_UNARY_OP_BOOL, arg);
            if (result != MP_OBJ_NULL) {
                return result == mp_const_true;
            }
        }

        mp_obj_t len = mp_obj_len_maybe(arg);
        if (len != MP_OBJ_NULL) {
            // obj has a length, truth determined if len != 0
            return len != MP_OBJ_NEW_SMALL_INT(0);
        } else {
            // any other obj is true per Python semantics
            return 1;
        }
    }
}

102
bool mp_obj_is_callable(mp_obj_t o_in) {
103
    return mp_obj_get_type(o_in)->call != NULL;
104
105
}

106
107
machine_int_t mp_obj_hash(mp_obj_t o_in) {
    if (o_in == mp_const_false) {
108
        return 0; // needs to hash to same as the integer 0, since False==0
109
    } else if (o_in == mp_const_true) {
110
        return 1; // needs to hash to same as the integer 1, since True==1
111
112
    } else if (MP_OBJ_IS_SMALL_INT(o_in)) {
        return MP_OBJ_SMALL_INT_VALUE(o_in);
113
114
    } else if (MP_OBJ_IS_STR(o_in)) {
        return mp_obj_str_get_hash(o_in);
115
    } else if (MP_OBJ_IS_TYPE(o_in, &mp_type_NoneType)) {
116
        return (machine_int_t)o_in;
117
    } else if (MP_OBJ_IS_TYPE(o_in, &mp_type_fun_native) || MP_OBJ_IS_TYPE(o_in, &mp_type_fun_bc)) {
118
        return (machine_int_t)o_in;
119
    } else if (MP_OBJ_IS_TYPE(o_in, &mp_type_tuple)) {
120
121
122
123
124
        return mp_obj_tuple_hash(o_in);

    // TODO hash class and instances
    // TODO delegate to __hash__ method if it exists

125
    } else {
126
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "unhashable type: '%s'", mp_obj_get_type_str(o_in)));
127
128
129
130
131
132
133
134
135
    }
}

// this function implements the '==' operator (and so the inverse of '!=')
// from the python language reference:
// "The objects need not have the same type. If both are numbers, they are converted
// to a common type. Otherwise, the == and != operators always consider objects of
// different types to be unequal."
// note also that False==0 and True==1 are true expressions
136
bool mp_obj_equal(mp_obj_t o1, mp_obj_t o2) {
137
138
    if (o1 == o2) {
        return true;
139
140
    } else if (o1 == mp_const_none || o2 == mp_const_none) {
        return false;
141
142
    } else if (MP_OBJ_IS_SMALL_INT(o1) || MP_OBJ_IS_SMALL_INT(o2)) {
        if (MP_OBJ_IS_SMALL_INT(o1) && MP_OBJ_IS_SMALL_INT(o2)) {
143
144
            return false;
        } else {
145
146
            if (MP_OBJ_IS_SMALL_INT(o2)) {
                mp_obj_t temp = o1; o1 = o2; o2 = temp;
147
148
            }
            // o1 is the SMALL_INT, o2 is not
149
150
            mp_small_int_t val = MP_OBJ_SMALL_INT_VALUE(o1);
            if (o2 == mp_const_false) {
151
                return val == 0;
152
            } else if (o2 == mp_const_true) {
153
                return val == 1;
154
            } else if (MP_OBJ_IS_TYPE(o2, &mp_type_int)) {
155
156
157
                // If o2 is long int, dispatch to its virtual methods
                mp_obj_base_t *o = o2;
                if (o->type->binary_op != NULL) {
Damien George's avatar
Damien George committed
158
                    mp_obj_t r = o->type->binary_op(MP_BINARY_OP_EQUAL, o2, o1);
159
160
                    return r == mp_const_true ? true : false;
                }
161
            }
162
            return false;
163
        }
164
165
    } else if (MP_OBJ_IS_STR(o1) && MP_OBJ_IS_STR(o2)) {
        return mp_obj_str_equal(o1, o2);
166
    } else {
167
168
        mp_obj_base_t *o = o1;
        if (o->type->binary_op != NULL) {
Damien George's avatar
Damien George committed
169
            mp_obj_t r = o->type->binary_op(MP_BINARY_OP_EQUAL, o1, o2);
170
171
172
173
            if (r != MP_OBJ_NULL) {
                return r == mp_const_true ? true : false;
            }
        }
174

175
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_NotImplementedError,
176
            "Equality for '%s' and '%s' types not yet implemented", mp_obj_get_type_str(o1), mp_obj_get_type_str(o2)));
177
178
179
180
        return false;
    }
}

181
182
183
184
bool mp_obj_less(mp_obj_t o1, mp_obj_t o2) {
    if (MP_OBJ_IS_SMALL_INT(o1) && MP_OBJ_IS_SMALL_INT(o2)) {
        mp_small_int_t i1 = MP_OBJ_SMALL_INT_VALUE(o1);
        mp_small_int_t i2 = MP_OBJ_SMALL_INT_VALUE(o2);
185
186
187
188
189
190
191
        return i1 < i2;
    } else {
        assert(0);
        return false;
    }
}

192
193
machine_int_t mp_obj_get_int(mp_obj_t arg) {
    if (arg == mp_const_false) {
194
        return 0;
195
    } else if (arg == mp_const_true) {
196
        return 1;
197
198
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        return MP_OBJ_SMALL_INT_VALUE(arg);
199
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_int)) {
200
        return mp_obj_int_get_checked(arg);
201
    } else {
202
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to int", mp_obj_get_type_str(arg)));
203
204
205
206
    }
}

#if MICROPY_ENABLE_FLOAT
207
mp_float_t mp_obj_get_float(mp_obj_t arg) {
208
    if (arg == mp_const_false) {
209
        return 0;
210
    } else if (arg == mp_const_true) {
211
        return 1;
212
213
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        return MP_OBJ_SMALL_INT_VALUE(arg);
214
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_int)) {
215
        return mp_obj_int_as_float(arg);
216
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_float)) {
217
        return mp_obj_float_get(arg);
218
    } else {
219
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to float", mp_obj_get_type_str(arg)));
220
221
222
    }
}

223
224
void mp_obj_get_complex(mp_obj_t arg, mp_float_t *real, mp_float_t *imag) {
    if (arg == mp_const_false) {
225
226
        *real = 0;
        *imag = 0;
227
    } else if (arg == mp_const_true) {
228
229
        *real = 1;
        *imag = 0;
230
231
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        *real = MP_OBJ_SMALL_INT_VALUE(arg);
232
        *imag = 0;
233
234
235
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_int)) {
        *real = mp_obj_int_as_float(arg);
        *imag = 0;
236
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_float)) {
237
        *real = mp_obj_float_get(arg);
238
        *imag = 0;
239
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_complex)) {
240
        mp_obj_complex_get(arg, real, imag);
241
    } else {
242
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to complex", mp_obj_get_type_str(arg)));
243
244
245
246
    }
}
#endif

247
void mp_obj_get_array(mp_obj_t o, uint *len, mp_obj_t **items) {
248
    if (MP_OBJ_IS_TYPE(o, &mp_type_tuple)) {
249
        mp_obj_tuple_get(o, len, items);
250
    } else if (MP_OBJ_IS_TYPE(o, &mp_type_list)) {
251
252
253
254
255
256
257
        mp_obj_list_get(o, len, items);
    } else {
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "object '%s' is not a tuple or list", mp_obj_get_type_str(o)));
    }
}

void mp_obj_get_array_fixed_n(mp_obj_t o, uint len, mp_obj_t **items) {
258
    if (MP_OBJ_IS_TYPE(o, &mp_type_tuple) || MP_OBJ_IS_TYPE(o, &mp_type_list)) {
259
        uint seq_len;
260
        if (MP_OBJ_IS_TYPE(o, &mp_type_tuple)) {
261
            mp_obj_tuple_get(o, &seq_len, items);
262
        } else {
263
            mp_obj_list_get(o, &seq_len, items);
264
        }
265
266
        if (seq_len != len) {
            nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_IndexError, "requested length %d but object has length %d", len, seq_len));
267
268
        }
    } else {
269
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "object '%s' is not a tuple or list", mp_obj_get_type_str(o)));
270
271
272
    }
}

273
274
275
// is_slice determines whether the index is a slice index
uint mp_get_index(const mp_obj_type_t *type, machine_uint_t len, mp_obj_t index, bool is_slice) {
    int i;
276
    if (MP_OBJ_IS_SMALL_INT(index)) {
277
        i = MP_OBJ_SMALL_INT_VALUE(index);
278
    } else if (MP_OBJ_IS_TYPE(index, &mp_type_bool)) {
xbe's avatar
xbe committed
279
        i = (index == mp_const_true ? 1 : 0);
280
    } else {
281
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "%s indices must be integers, not %s", qstr_str(type->name), mp_obj_get_type_str(index)));
282
    }
283
284

    if (i < 0) {
xbe's avatar
xbe committed
285
        i += len;
286
287
    }
    if (is_slice) {
xbe's avatar
xbe committed
288
289
290
291
292
        if (i < 0) {
            i = 0;
        } else if (i > len) {
            i = len;
        }
293
    } else {
xbe's avatar
xbe committed
294
295
296
        if (i < 0 || i >= len) {
            nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_IndexError, "%s index out of range", qstr_str(type->name)));
        }
297
298
    }
    return i;
299
}
300

301
// may return MP_OBJ_NULL
302
mp_obj_t mp_obj_len_maybe(mp_obj_t o_in) {
303
    if (MP_OBJ_IS_STR(o_in)) {
304
        return MP_OBJ_NEW_SMALL_INT((machine_int_t)mp_obj_str_get_len(o_in));
305
    } else {
306
307
        mp_obj_type_t *type = mp_obj_get_type(o_in);
        if (type->unary_op != NULL) {
Damien George's avatar
Damien George committed
308
            return type->unary_op(MP_UNARY_OP_LEN, o_in);
309
310
        } else {
            return MP_OBJ_NULL;
311
        }
312
313
    }
}
314
315
316
317
318
319

// Return input argument. Useful as .getiter for objects which are
// their own iterators, etc.
mp_obj_t mp_identity(mp_obj_t self) {
    return self;
}
320
MP_DEFINE_CONST_FUN_OBJ_1(mp_identity_obj, mp_identity);