227 lines
7.4 KiB
C
227 lines
7.4 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 Damien P. George
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "py/runtime.h"
|
|
|
|
#include "supervisor/shared/translate.h"
|
|
|
|
/******************************************************************************/
|
|
/* range iterator */
|
|
|
|
typedef struct _mp_obj_range_it_t {
|
|
mp_obj_base_t base;
|
|
// TODO make these values generic objects or something
|
|
mp_int_t cur;
|
|
mp_int_t stop;
|
|
mp_int_t step;
|
|
} mp_obj_range_it_t;
|
|
|
|
STATIC mp_obj_t range_it_iternext(mp_obj_t o_in) {
|
|
mp_obj_range_it_t *o = MP_OBJ_TO_PTR(o_in);
|
|
if ((o->step > 0 && o->cur < o->stop) || (o->step < 0 && o->cur > o->stop)) {
|
|
mp_obj_t o_out = MP_OBJ_NEW_SMALL_INT(o->cur);
|
|
o->cur += o->step;
|
|
return o_out;
|
|
} else {
|
|
return MP_OBJ_STOP_ITERATION;
|
|
}
|
|
}
|
|
|
|
STATIC const mp_obj_type_t range_it_type = {
|
|
{ &mp_type_type },
|
|
.name = MP_QSTR_iterator,
|
|
.getiter = mp_identity_getiter,
|
|
.iternext = range_it_iternext,
|
|
};
|
|
|
|
STATIC mp_obj_t mp_obj_new_range_iterator(mp_int_t cur, mp_int_t stop, mp_int_t step, mp_obj_iter_buf_t *iter_buf) {
|
|
assert(sizeof(mp_obj_range_it_t) <= sizeof(mp_obj_iter_buf_t));
|
|
mp_obj_range_it_t *o = (mp_obj_range_it_t*)iter_buf;
|
|
o->base.type = &range_it_type;
|
|
o->cur = cur;
|
|
o->stop = stop;
|
|
o->step = step;
|
|
return MP_OBJ_FROM_PTR(o);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* range */
|
|
|
|
typedef struct _mp_obj_range_t {
|
|
mp_obj_base_t base;
|
|
// TODO make these values generic objects or something
|
|
mp_int_t start;
|
|
mp_int_t stop;
|
|
mp_int_t step;
|
|
} mp_obj_range_t;
|
|
|
|
STATIC void range_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
|
(void)kind;
|
|
mp_obj_range_t *self = MP_OBJ_TO_PTR(self_in);
|
|
mp_printf(print, "range(" INT_FMT ", " INT_FMT "", self->start, self->stop);
|
|
if (self->step == 1) {
|
|
mp_print_str(print, ")");
|
|
} else {
|
|
mp_printf(print, ", " INT_FMT ")", self->step);
|
|
}
|
|
}
|
|
|
|
STATIC mp_obj_t range_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
|
mp_arg_check_num(n_args, kw_args, 1, 3, false);
|
|
|
|
mp_obj_range_t *o = m_new_obj(mp_obj_range_t);
|
|
o->base.type = type;
|
|
o->start = 0;
|
|
o->step = 1;
|
|
|
|
if (n_args == 1) {
|
|
o->stop = mp_obj_get_int(args[0]);
|
|
} else {
|
|
o->start = mp_obj_get_int(args[0]);
|
|
o->stop = mp_obj_get_int(args[1]);
|
|
if (n_args == 3) {
|
|
o->step = mp_obj_get_int(args[2]);
|
|
if (o->step == 0) {
|
|
mp_raise_ValueError(translate("zero step"));
|
|
}
|
|
}
|
|
}
|
|
|
|
return MP_OBJ_FROM_PTR(o);
|
|
}
|
|
|
|
STATIC mp_int_t range_len(mp_obj_range_t *self) {
|
|
// When computing length, need to take into account step!=1 and step<0.
|
|
mp_int_t len = self->stop - self->start + self->step;
|
|
if (self->step > 0) {
|
|
len -= 1;
|
|
} else {
|
|
len += 1;
|
|
}
|
|
len = len / self->step;
|
|
if (len < 0) {
|
|
len = 0;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
STATIC mp_obj_t range_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
|
|
mp_obj_range_t *self = MP_OBJ_TO_PTR(self_in);
|
|
mp_int_t len = range_len(self);
|
|
switch (op) {
|
|
case MP_UNARY_OP_BOOL: return mp_obj_new_bool(len > 0);
|
|
case MP_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(len);
|
|
default: return MP_OBJ_NULL; // op not supported
|
|
}
|
|
}
|
|
|
|
#if MICROPY_PY_BUILTINS_RANGE_BINOP
|
|
STATIC mp_obj_t range_binary_op(mp_binary_op_t op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
|
|
if (!MP_OBJ_IS_TYPE(rhs_in, &mp_type_range) || op != MP_BINARY_OP_EQUAL) {
|
|
return MP_OBJ_NULL; // op not supported
|
|
}
|
|
mp_obj_range_t *lhs = MP_OBJ_TO_PTR(lhs_in);
|
|
mp_obj_range_t *rhs = MP_OBJ_TO_PTR(rhs_in);
|
|
mp_int_t lhs_len = range_len(lhs);
|
|
mp_int_t rhs_len = range_len(rhs);
|
|
return mp_obj_new_bool(
|
|
lhs_len == rhs_len
|
|
&& (lhs_len == 0
|
|
|| (lhs->start == rhs->start
|
|
&& (lhs_len == 1 || lhs->step == rhs->step)))
|
|
);
|
|
}
|
|
#endif
|
|
|
|
STATIC mp_obj_t range_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
|
|
if (value == MP_OBJ_SENTINEL) {
|
|
// load
|
|
mp_obj_range_t *self = MP_OBJ_TO_PTR(self_in);
|
|
mp_int_t len = range_len(self);
|
|
#if MICROPY_PY_BUILTINS_SLICE
|
|
if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
|
|
mp_bound_slice_t slice;
|
|
mp_seq_get_fast_slice_indexes(len, index, &slice);
|
|
mp_obj_range_t *o = m_new_obj(mp_obj_range_t);
|
|
o->base.type = &mp_type_range;
|
|
o->start = self->start + slice.start * self->step;
|
|
o->stop = self->start + slice.stop * self->step;
|
|
o->step = slice.step * self->step;
|
|
if (slice.step < 0) {
|
|
// Negative slice steps have inclusive stop, so adjust for exclusive
|
|
o->stop -= self->step;
|
|
}
|
|
return MP_OBJ_FROM_PTR(o);
|
|
}
|
|
#endif
|
|
size_t index_val = mp_get_index(self->base.type, len, index, false);
|
|
return MP_OBJ_NEW_SMALL_INT(self->start + index_val * self->step);
|
|
} else {
|
|
return MP_OBJ_NULL; // op not supported
|
|
}
|
|
}
|
|
|
|
STATIC mp_obj_t range_getiter(mp_obj_t o_in, mp_obj_iter_buf_t *iter_buf) {
|
|
mp_obj_range_t *o = MP_OBJ_TO_PTR(o_in);
|
|
return mp_obj_new_range_iterator(o->start, o->stop, o->step, iter_buf);
|
|
}
|
|
|
|
|
|
#if MICROPY_PY_BUILTINS_RANGE_ATTRS
|
|
STATIC void range_attr(mp_obj_t o_in, qstr attr, mp_obj_t *dest) {
|
|
if (dest[0] != MP_OBJ_NULL) {
|
|
// not load attribute
|
|
return;
|
|
}
|
|
mp_obj_range_t *o = MP_OBJ_TO_PTR(o_in);
|
|
if (attr == MP_QSTR_start) {
|
|
dest[0] = mp_obj_new_int(o->start);
|
|
} else if (attr == MP_QSTR_stop) {
|
|
dest[0] = mp_obj_new_int(o->stop);
|
|
} else if (attr == MP_QSTR_step) {
|
|
dest[0] = mp_obj_new_int(o->step);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
const mp_obj_type_t mp_type_range = {
|
|
{ &mp_type_type },
|
|
.name = MP_QSTR_range,
|
|
.print = range_print,
|
|
.make_new = range_make_new,
|
|
.unary_op = range_unary_op,
|
|
#if MICROPY_PY_BUILTINS_RANGE_BINOP
|
|
.binary_op = range_binary_op,
|
|
#endif
|
|
.subscr = range_subscr,
|
|
.getiter = range_getiter,
|
|
#if MICROPY_PY_BUILTINS_RANGE_ATTRS
|
|
.attr = range_attr,
|
|
#endif
|
|
};
|