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 parse-bytecode

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objenumerate.c

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/*

* This file is part of the Micro Python 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 <assert.h>

#include "py/runtime.h"

#if MICROPY_PY_BUILTINS_ENUMERATE

typedef struct _mp_obj_enumerate_t {

mp_obj_base_t base;

mp_obj_t iter;

mp_int_t cur;

} mp_obj_enumerate_t;

STATIC mp_obj_t enumerate_iternext(mp_obj_t self_in);

STATIC mp_obj_t enumerate_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {

#if MICROPY_CPYTHON_COMPAT

static const mp_arg_t allowed_args[] = {

{ MP_QSTR_iterable, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },

{ MP_QSTR_start, MP_ARG_INT, {.u_int = 0} },

};

// parse args

struct {

mp_arg_val_t iterable, start;

} arg_vals;

mp_arg_parse_all_kw_array(n_args, n_kw, args,

MP_ARRAY_SIZE(allowed_args), allowed_args, (mp_arg_val_t*)&arg_vals);

// create enumerate object

mp_obj_enumerate_t *o = m_new_obj(mp_obj_enumerate_t);

o->base.type = type;

o->iter = mp_getiter(arg_vals.iterable.u_obj);

o->cur = arg_vals.start.u_int;

#else

(void)n_kw;

mp_obj_enumerate_t *o = m_new_obj(mp_obj_enumerate_t);

o->base.type = type;

o->iter = mp_getiter(args[0]);

o->cur = n_args > 1 ? mp_obj_get_int(args[1]) : 0;

#endif

return MP_OBJ_FROM_PTR(o);

}

const mp_obj_type_t mp_type_enumerate = {

{ &mp_type_type },

.name = MP_QSTR_enumerate,

.make_new = enumerate_make_new,

.iternext = enumerate_iternext,

.getiter = mp_identity,

};

STATIC mp_obj_t enumerate_iternext(mp_obj_t self_in) {

assert(MP_OBJ_IS_TYPE(self_in, &mp_type_enumerate));

mp_obj_enumerate_t *self = MP_OBJ_TO_PTR(self_in);

mp_obj_t next = mp_iternext(self->iter);

if (next == MP_OBJ_STOP_ITERATION) {

return MP_OBJ_STOP_ITERATION;

} else {

mp_obj_t items[] = {MP_OBJ_NEW_SMALL_INT(self->cur++), next};

return mp_obj_new_tuple(2, items);

}

}

#endif // MICROPY_PY_BUILTINS_ENUMERATE