obj.c 9.13 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
13
#include "runtime.h"
#include "map.h"

14
mp_obj_type_t *mp_obj_get_type(mp_obj_t o_in) {
Damien George's avatar
Damien George committed
15
16
    if (MP_OBJ_IS_SMALL_INT(o_in)) {
        return (mp_obj_t)&int_type;
17
18
    } else if (MP_OBJ_IS_QSTR(o_in)) {
        return (mp_obj_t)&str_type;
Damien George's avatar
Damien George committed
19
20
21
22
23
24
    } else {
        mp_obj_base_t *o = o_in;
        return (mp_obj_t)o->type;
    }
}

25
const char *mp_obj_get_type_str(mp_obj_t o_in) {
26
    return qstr_str(mp_obj_get_type(o_in)->name);
27
28
29
30
31
32
33
34
35
}

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

36
void mp_obj_print_helper(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
37
38
39
    mp_obj_type_t *type = mp_obj_get_type(o_in);
    if (type->print != NULL) {
        type->print(print, env, o_in, kind);
40
    } else {
41
        print(env, "<%s>", qstr_str(type->name));
42
43
44
    }
}

45
46
void mp_obj_print(mp_obj_t o_in, mp_print_kind_t kind) {
    mp_obj_print_helper(printf_wrapper, NULL, o_in, kind);
47
48
}

49
50
// helper function to print an exception with traceback
void mp_obj_print_exception(mp_obj_t exc) {
51
    if (mp_obj_is_exception_instance(exc)) {
52
53
54
55
56
        machine_uint_t n, *values;
        mp_obj_exception_get_traceback(exc, &n, &values);
        if (n > 0) {
            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
66
67
68
            }
        }
    }
    mp_obj_print(exc, PRINT_REPR);
    printf("\n");
}

69
bool mp_obj_is_callable(mp_obj_t o_in) {
70
    return mp_obj_get_type(o_in)->call != NULL;
71
72
}

73
74
machine_int_t mp_obj_hash(mp_obj_t o_in) {
    if (o_in == mp_const_false) {
75
        return 0; // needs to hash to same as the integer 0, since False==0
76
    } else if (o_in == mp_const_true) {
77
        return 1; // needs to hash to same as the integer 1, since True==1
78
79
    } else if (MP_OBJ_IS_SMALL_INT(o_in)) {
        return MP_OBJ_SMALL_INT_VALUE(o_in);
80
81
    } else if (MP_OBJ_IS_STR(o_in)) {
        return mp_obj_str_get_hash(o_in);
82
    } else if (MP_OBJ_IS_TYPE(o_in, &none_type)) {
83
        return (machine_int_t)o_in;
84
85
86
87
88
89
90
91
    } else if (MP_OBJ_IS_TYPE(o_in, &fun_native_type) || MP_OBJ_IS_TYPE(o_in, &fun_bc_type)) {
        return (machine_int_t)o_in;
    } else if (MP_OBJ_IS_TYPE(o_in, &tuple_type)) {
        return mp_obj_tuple_hash(o_in);

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

92
    } else {
93
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "unhashable type: '%s'", mp_obj_get_type_str(o_in)));
94
95
96
97
98
99
100
101
102
    }
}

// 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
103
bool mp_obj_equal(mp_obj_t o1, mp_obj_t o2) {
104
105
    if (o1 == o2) {
        return true;
106
107
    } 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)) {
108
109
            return false;
        } else {
110
111
            if (MP_OBJ_IS_SMALL_INT(o2)) {
                mp_obj_t temp = o1; o1 = o2; o2 = temp;
112
113
            }
            // o1 is the SMALL_INT, o2 is not
114
115
            mp_small_int_t val = MP_OBJ_SMALL_INT_VALUE(o1);
            if (o2 == mp_const_false) {
116
                return val == 0;
117
            } else if (o2 == mp_const_true) {
118
                return val == 1;
119
120
121
122
            } else if (MP_OBJ_IS_TYPE(o2, &int_type)) {
                // If o2 is long int, dispatch to its virtual methods
                mp_obj_base_t *o = o2;
                if (o->type->binary_op != NULL) {
123
                    mp_obj_t r = o->type->binary_op(RT_BINARY_OP_EQUAL, o2, o1);
124
125
                    return r == mp_const_true ? true : false;
                }
126
            }
127
            return false;
128
        }
129
130
    } else if (MP_OBJ_IS_STR(o1) && MP_OBJ_IS_STR(o2)) {
        return mp_obj_str_equal(o1, o2);
131
    } else {
132
133
        mp_obj_base_t *o = o1;
        if (o->type->binary_op != NULL) {
134
            mp_obj_t r = o->type->binary_op(RT_BINARY_OP_EQUAL, o1, o2);
135
136
137
138
            if (r != MP_OBJ_NULL) {
                return r == mp_const_true ? true : false;
            }
        }
139

140
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_NotImplementedError,
141
            "Equality for '%s' and '%s' types not yet implemented", mp_obj_get_type_str(o1), mp_obj_get_type_str(o2)));
142
143
144
145
        return false;
    }
}

146
147
148
149
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);
150
151
152
153
154
155
156
        return i1 < i2;
    } else {
        assert(0);
        return false;
    }
}

157
158
machine_int_t mp_obj_get_int(mp_obj_t arg) {
    if (arg == mp_const_false) {
159
        return 0;
160
    } else if (arg == mp_const_true) {
161
        return 1;
162
163
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        return MP_OBJ_SMALL_INT_VALUE(arg);
164
165
    } else if (MP_OBJ_IS_TYPE(arg, &int_type)) {
        return mp_obj_int_get_checked(arg);
166
    } else {
167
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to int", mp_obj_get_type_str(arg)));
168
169
170
171
    }
}

#if MICROPY_ENABLE_FLOAT
172
mp_float_t mp_obj_get_float(mp_obj_t arg) {
173
    if (arg == mp_const_false) {
174
        return 0;
175
    } else if (arg == mp_const_true) {
176
        return 1;
177
178
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        return MP_OBJ_SMALL_INT_VALUE(arg);
179
180
    } else if (MP_OBJ_IS_TYPE(arg, &int_type)) {
        return mp_obj_int_as_float(arg);
181
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_float)) {
182
        return mp_obj_float_get(arg);
183
    } else {
184
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to float", mp_obj_get_type_str(arg)));
185
186
187
    }
}

188
189
void mp_obj_get_complex(mp_obj_t arg, mp_float_t *real, mp_float_t *imag) {
    if (arg == mp_const_false) {
190
191
        *real = 0;
        *imag = 0;
192
    } else if (arg == mp_const_true) {
193
194
        *real = 1;
        *imag = 0;
195
196
    } else if (MP_OBJ_IS_SMALL_INT(arg)) {
        *real = MP_OBJ_SMALL_INT_VALUE(arg);
197
        *imag = 0;
198
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_float)) {
199
        *real = mp_obj_float_get(arg);
200
        *imag = 0;
201
    } else if (MP_OBJ_IS_TYPE(arg, &mp_type_complex)) {
202
        mp_obj_complex_get(arg, real, imag);
203
    } else {
204
        nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to complex", mp_obj_get_type_str(arg)));
205
206
207
208
    }
}
#endif

209
210
211
212
213
214
215
216
217
218
mp_obj_t *mp_obj_get_array_fixed_n(mp_obj_t o_in, machine_int_t n) {
    if (MP_OBJ_IS_TYPE(o_in, &tuple_type) || MP_OBJ_IS_TYPE(o_in, &list_type)) {
        uint seq_len;
        mp_obj_t *seq_items;
        if (MP_OBJ_IS_TYPE(o_in, &tuple_type)) {
            mp_obj_tuple_get(o_in, &seq_len, &seq_items);
        } else {
            mp_obj_list_get(o_in, &seq_len, &seq_items);
        }
        if (seq_len != n) {
219
            nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_IndexError, "requested length %d but object has length %d", n, seq_len));
220
        }
221
        return seq_items;
222
    } else {
223
        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_in)));
224
225
226
    }
}

227
228
229
// 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;
230
    if (MP_OBJ_IS_SMALL_INT(index)) {
231
232
        i = MP_OBJ_SMALL_INT_VALUE(index);
    } else if (MP_OBJ_IS_TYPE(index, &bool_type)) {
xbe's avatar
xbe committed
233
        i = (index == mp_const_true ? 1 : 0);
234
    } else {
235
        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)));
236
    }
237
238

    if (i < 0) {
xbe's avatar
xbe committed
239
        i += len;
240
241
    }
    if (is_slice) {
xbe's avatar
xbe committed
242
243
244
245
246
        if (i < 0) {
            i = 0;
        } else if (i > len) {
            i = len;
        }
247
    } else {
xbe's avatar
xbe committed
248
249
250
        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)));
        }
251
252
    }
    return i;
253
}
254

255
// may return MP_OBJ_NULL
256
mp_obj_t mp_obj_len_maybe(mp_obj_t o_in) {
257
    if (MP_OBJ_IS_STR(o_in)) {
258
        return MP_OBJ_NEW_SMALL_INT((machine_int_t)mp_obj_str_get_len(o_in));
259
    } else {
260
261
        mp_obj_type_t *type = mp_obj_get_type(o_in);
        if (type->unary_op != NULL) {
262
263
264
            return type->unary_op(RT_UNARY_OP_LEN, o_in);
        } else {
            return MP_OBJ_NULL;
265
        }
266
267
    }
}
268
269
270
271
272
273

// 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;
}
274
MP_DEFINE_CONST_FUN_OBJ_1(mp_identity_obj, mp_identity);