objint.c 4.25 KB
Newer Older
1
#include <stdlib.h>
Damien George's avatar
Damien George committed
2
3
4
5
6
7
#include <stdint.h>
#include <assert.h>

#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
8
#include "qstr.h"
Damien George's avatar
Damien George committed
9
#include "obj.h"
10
#include "parsenum.h"
11
#include "mpz.h"
12
#include "objint.h"
13
14
#include "runtime0.h"
#include "runtime.h"
15

16
17
18
19
#if MICROPY_ENABLE_FLOAT
#include <math.h>
#endif

20
21
// This dispatcher function is expected to be independent of the implementation
// of long int
22
STATIC mp_obj_t int_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
23
24
    // TODO check n_kw == 0

Damien George's avatar
Damien George committed
25
26
27
28
29
    switch (n_args) {
        case 0:
            return MP_OBJ_NEW_SMALL_INT(0);

        case 1:
30
            if (MP_OBJ_IS_STR(args[0])) {
31
                // a string, parse it
32
                uint l;
33
                const char *s = mp_obj_str_get_data(args[0], &l);
34
                return mp_parse_num_integer(s, l, 0);
35
36
37
38
#if MICROPY_ENABLE_FLOAT
            } else if (MP_OBJ_IS_TYPE(args[0], &mp_type_float)) {
                return MP_OBJ_NEW_SMALL_INT((machine_int_t)(MICROPY_FLOAT_C_FUN(trunc)(mp_obj_float_get(args[0]))));
#endif
39
40
41
            } else {
                return MP_OBJ_NEW_SMALL_INT(mp_obj_get_int(args[0]));
            }
Damien George's avatar
Damien George committed
42

xyb's avatar
xyb committed
43
        case 2:
44
        {
45
46
            // should be a string, parse it
            // TODO proper error checking of argument types
47
            uint l;
48
            const char *s = mp_obj_str_get_data(args[0], &l);
49
            return mp_parse_num_integer(s, l, mp_obj_get_int(args[1]));
50
        }
Damien George's avatar
Damien George committed
51
52

        default:
53
            nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "int takes at most 2 arguments, %d given", n_args));
Damien George's avatar
Damien George committed
54
55
56
    }
}

57
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_NONE
58

59
void int_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
60
    if (MP_OBJ_IS_SMALL_INT(self_in)) {
61
        print(env, INT_FMT, MP_OBJ_SMALL_INT_VALUE(self_in));
62
    }
63
64
}

65
// This is called for operations on SMALL_INT that are not handled by mp_unary_op
66
mp_obj_t int_unary_op(int op, mp_obj_t o_in) {
67
    return MP_OBJ_NULL;
68
69
}

70
// This is called for operations on SMALL_INT that are not handled by mp_binary_op
71
mp_obj_t int_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
72
73
74
75
76
77
78
    if (op == MP_BINARY_OP_MULTIPLY) {
        if (MP_OBJ_IS_STR(rhs_in) || MP_OBJ_IS_TYPE(rhs_in, &mp_type_tuple) || MP_OBJ_IS_TYPE(rhs_in, &mp_type_list)) {
            // multiply is commutative for these types, so delegate to them
            return mp_binary_op(op, rhs_in, lhs_in);
        }
    }
    return MP_OBJ_NULL;
79
80
81
82
}

// This is called only with strings whose value doesn't fit in SMALL_INT
mp_obj_t mp_obj_new_int_from_long_str(const char *s) {
83
    nlr_jump(mp_obj_new_exception_msg(&mp_type_OverflowError, "long int not supported in this build"));
84
    return mp_const_none;
85
86
}

87
88
89
90
91
92
// This is called when an integer larger than a SMALL_INT is needed (although val might still fit in a SMALL_INT)
mp_obj_t mp_obj_new_int_from_ll(long long val) {
    nlr_jump(mp_obj_new_exception_msg(&mp_type_OverflowError, "small int overflow"));
    return mp_const_none;
}

93
94
95
96
97
98
mp_obj_t mp_obj_new_int_from_uint(machine_uint_t value) {
    // SMALL_INT accepts only signed numbers, of one bit less size
    // then word size, which totals 2 bits less for unsigned numbers.
    if ((value & (WORD_MSBIT_HIGH | (WORD_MSBIT_HIGH >> 1))) == 0) {
        return MP_OBJ_NEW_SMALL_INT(value);
    }
99
    nlr_jump(mp_obj_new_exception_msg(&mp_type_OverflowError, "small int overflow"));
100
    return mp_const_none;
101
102
}

Damien George's avatar
Damien George committed
103
mp_obj_t mp_obj_new_int(machine_int_t value) {
104
105
106
    if (MP_OBJ_FITS_SMALL_INT(value)) {
        return MP_OBJ_NEW_SMALL_INT(value);
    }
107
    nlr_jump(mp_obj_new_exception_msg(&mp_type_OverflowError, "small int overflow"));
108
    return mp_const_none;
Damien George's avatar
Damien George committed
109
}
110
111
112
113
114
115
116
117
118

machine_int_t mp_obj_int_get(mp_obj_t self_in) {
    return MP_OBJ_SMALL_INT_VALUE(self_in);
}

machine_int_t mp_obj_int_get_checked(mp_obj_t self_in) {
    return MP_OBJ_SMALL_INT_VALUE(self_in);
}

119
120
121
122
123
124
#if MICROPY_ENABLE_FLOAT
mp_float_t mp_obj_int_as_float(mp_obj_t self_in) {
    return MP_OBJ_SMALL_INT_VALUE(self_in);
}
#endif

125
126
#endif // MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_NONE

127
const mp_obj_type_t mp_type_int = {
128
    { &mp_type_type },
129
    .name = MP_QSTR_int,
130
131
    .print = int_print,
    .make_new = int_make_new,
132
    .unary_op = int_unary_op,
133
134
    .binary_op = int_binary_op,
};