04b9147e15
Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
116 lines
4.1 KiB
C
116 lines
4.1 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <assert.h>
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#include "mpconfig.h"
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "obj.h"
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#include "runtime0.h"
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/******************************************************************************/
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/* ellipsis object, a singleton */
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typedef struct _mp_obj_ellipsis_t {
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mp_obj_base_t base;
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} mp_obj_ellipsis_t;
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void ellipsis_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
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print(env, "Ellipsis");
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}
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const mp_obj_type_t mp_type_ellipsis = {
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{ &mp_type_type },
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.name = MP_QSTR_Ellipsis,
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.print = ellipsis_print,
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};
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const mp_obj_ellipsis_t mp_const_ellipsis_obj = {{&mp_type_ellipsis}};
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/******************************************************************************/
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/* slice object */
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#if MICROPY_ENABLE_SLICE
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// TODO: This implements only variant of slice with 2 integer args only.
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// CPython supports 3rd arg (step), plus args can be arbitrary Python objects.
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typedef struct _mp_obj_slice_t {
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mp_obj_base_t base;
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machine_int_t start;
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machine_int_t stop;
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} mp_obj_slice_t;
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void slice_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
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mp_obj_slice_t *o = o_in;
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print(env, "slice(" INT_FMT ", " INT_FMT ")", o->start, o->stop);
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}
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const mp_obj_type_t mp_type_slice = {
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{ &mp_type_type },
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.name = MP_QSTR_slice,
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.print = slice_print,
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};
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// TODO: Make sure to handle "empty" values, which are signified by None in CPython
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mp_obj_t mp_obj_new_slice(mp_obj_t ostart, mp_obj_t ostop, mp_obj_t ostep) {
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assert(ostep == NULL);
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machine_int_t start = 0, stop = 0;
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if (ostart != mp_const_none) {
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start = mp_obj_get_int(ostart);
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}
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if (ostop != mp_const_none) {
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stop = mp_obj_get_int(ostop);
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if (stop == 0) {
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// [x:0] is a special case - in our slice object, stop = 0 means
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// "end of sequence". Fortunately, [x:0] is an empty seqence for
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// any x (including negative). [x:x] is also always empty sequence.
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// but x also can be 0. But note that b""[x:x] is b"" for any x (i.e.
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// no IndexError, at least in Python 3.3.3). So, we just use -1's to
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// signify that. -1 is catchy "special" number in case someone will
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// try to print [x:0] slice ever.
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start = stop = -1;
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}
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}
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mp_obj_slice_t *o = m_new(mp_obj_slice_t, 1);
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o->base.type = &mp_type_slice;
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o->start = start;
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o->stop = stop;
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return (mp_obj_t)o;
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}
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void mp_obj_slice_get(mp_obj_t self_in, machine_int_t *start, machine_int_t *stop, machine_int_t *step) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_slice));
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mp_obj_slice_t *self = self_in;
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*start = self->start;
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*stop = self->stop;
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*step = 1;
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}
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#endif
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