193 lines
7.5 KiB
C
193 lines
7.5 KiB
C
/*
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* This file is part of the MicroPython 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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* Copyright (c) 2014 Paul Sokolovsky
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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 <string.h>
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#include "py/objtuple.h"
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#include "py/runtime.h"
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#include "py/objstr.h"
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#include "py/objnamedtuple.h"
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#include "py/objtype.h"
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#if MICROPY_PY_COLLECTIONS
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size_t mp_obj_namedtuple_find_field(const mp_obj_namedtuple_type_t *type, qstr name) {
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for (size_t i = 0; i < type->n_fields; i++) {
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if (type->fields[i] == name) {
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return i;
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}
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}
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return (size_t)-1;
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}
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#if MICROPY_PY_COLLECTIONS_NAMEDTUPLE__ASDICT
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STATIC mp_obj_t namedtuple_asdict(mp_obj_t self_in) {
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mp_obj_namedtuple_t *self = MP_OBJ_TO_PTR(self_in);
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const qstr *fields = ((mp_obj_namedtuple_type_t *)self->tuple.base.type)->fields;
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mp_obj_t dict = mp_obj_new_dict(self->tuple.len);
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mp_obj_dict_t *dictObj = MP_OBJ_TO_PTR(dict);
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#if MICROPY_PY_COLLECTIONS_ORDEREDDICT
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// make it an OrderedDict
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dictObj->base.type = &mp_type_ordereddict;
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dictObj->map.is_ordered = 1;
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#else
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dictObj->base.type = &mp_type_dict;
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dictObj->map.is_ordered = 0;
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#endif
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for (size_t i = 0; i < self->tuple.len; ++i) {
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mp_obj_dict_store(dict, MP_OBJ_NEW_QSTR(fields[i]), self->tuple.items[i]);
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}
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return dict;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(namedtuple_asdict_obj, namedtuple_asdict);
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#endif
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void namedtuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
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(void)kind;
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mp_obj_namedtuple_t *o = MP_OBJ_TO_PTR(o_in);
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mp_printf(print, "%q", o->tuple.base.type->name);
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const qstr *fields = ((mp_obj_namedtuple_type_t *)o->tuple.base.type)->fields;
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mp_obj_attrtuple_print_helper(print, fields, &o->tuple);
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}
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void namedtuple_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
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if (dest[0] == MP_OBJ_NULL) {
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// load attribute
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mp_obj_namedtuple_t *self = MP_OBJ_TO_PTR(self_in);
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#if MICROPY_PY_COLLECTIONS_NAMEDTUPLE__ASDICT
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if (attr == MP_QSTR__asdict) {
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dest[0] = MP_OBJ_FROM_PTR(&namedtuple_asdict_obj);
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dest[1] = self_in;
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return;
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}
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#endif
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size_t id = mp_obj_namedtuple_find_field((mp_obj_namedtuple_type_t *)self->tuple.base.type, attr);
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if (id == (size_t)-1) {
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return;
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}
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dest[0] = self->tuple.items[id];
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} else {
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// delete/store attribute
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// provide more detailed error message than we'd get by just returning
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mp_raise_AttributeError(MP_ERROR_TEXT("can't set attribute"));
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}
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}
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mp_obj_t namedtuple_make_new(const mp_obj_type_t *type_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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const mp_obj_namedtuple_type_t *type = (const mp_obj_namedtuple_type_t *)type_in;
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size_t num_fields = type->n_fields;
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if (n_args + n_kw != num_fields) {
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#if MICROPY_ERROR_REPORTING <= MICROPY_ERROR_REPORTING_TERSE
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mp_arg_error_terse_mismatch();
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#elif MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_NORMAL
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mp_raise_TypeError_varg(
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MP_ERROR_TEXT("function takes %d positional arguments but %d were given"),
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num_fields, n_args + n_kw);
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#else
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mp_raise_TypeError_varg(
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MP_ERROR_TEXT("%q() takes %d positional arguments but %d were given"),
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type->base.name, num_fields, n_args + n_kw);
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#endif
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}
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// Create a namedtuple with explicit malloc. Calling mp_obj_new_tuple
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// with num_fields=0 returns a read-only object.
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mp_obj_tuple_t *tuple = mp_obj_malloc_var(mp_obj_tuple_t, mp_obj_t, num_fields, type_in);
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tuple->len = num_fields;
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// Copy the positional args into the first slots of the namedtuple
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memcpy(&tuple->items[0], args, sizeof(mp_obj_t) * n_args);
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// Fill in the remaining slots with the keyword args
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memset(&tuple->items[n_args], 0, sizeof(mp_obj_t) * n_kw);
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for (size_t i = n_args; i < n_args + 2 * n_kw; i += 2) {
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qstr kw = mp_obj_str_get_qstr(args[i]);
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size_t id = mp_obj_namedtuple_find_field(type, kw);
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if (id == (size_t)-1) {
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#if MICROPY_ERROR_REPORTING <= MICROPY_ERROR_REPORTING_TERSE
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mp_arg_error_terse_mismatch();
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#else
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mp_raise_msg_varg(&mp_type_TypeError, MP_ERROR_TEXT("unexpected keyword argument '%q'"), kw);
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#endif
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}
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if (tuple->items[id] != MP_OBJ_NULL) {
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#if MICROPY_ERROR_REPORTING <= MICROPY_ERROR_REPORTING_TERSE
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mp_arg_error_terse_mismatch();
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#else
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mp_raise_msg_varg(&mp_type_TypeError,
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MP_ERROR_TEXT("function got multiple values for argument '%q'"), kw);
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#endif
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}
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tuple->items[id] = args[i + 1];
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}
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return MP_OBJ_FROM_PTR(tuple);
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}
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mp_obj_namedtuple_type_t *mp_obj_new_namedtuple_base(size_t n_fields, mp_obj_t *fields) {
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mp_obj_namedtuple_type_t *o = m_new_obj_var0(mp_obj_namedtuple_type_t, qstr, n_fields);
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o->n_fields = n_fields;
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for (size_t i = 0; i < n_fields; i++) {
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o->fields[i] = mp_obj_str_get_qstr(fields[i]);
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}
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return o;
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}
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STATIC mp_obj_t mp_obj_new_namedtuple_type(qstr name, size_t n_fields, mp_obj_t *fields) {
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mp_obj_namedtuple_type_t *o = mp_obj_new_namedtuple_base(n_fields, fields);
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mp_obj_type_t *type = (mp_obj_type_t *)&o->base;
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type->base.type = &mp_type_type;
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type->flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE; // can match tuple
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type->name = name;
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MP_OBJ_TYPE_SET_SLOT(type, make_new, namedtuple_make_new, 0);
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MP_OBJ_TYPE_SET_SLOT(type, print, namedtuple_print, 1);
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MP_OBJ_TYPE_SET_SLOT(type, unary_op, mp_obj_tuple_unary_op, 2);
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MP_OBJ_TYPE_SET_SLOT(type, binary_op, mp_obj_tuple_binary_op, 3);
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MP_OBJ_TYPE_SET_SLOT(type, attr, namedtuple_attr, 4);
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MP_OBJ_TYPE_SET_SLOT(type, subscr, mp_obj_tuple_subscr, 5);
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MP_OBJ_TYPE_SET_SLOT(type, iter, mp_obj_tuple_getiter, 6);
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MP_OBJ_TYPE_SET_SLOT(type, parent, &mp_type_tuple, 7);
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return MP_OBJ_FROM_PTR(o);
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}
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STATIC mp_obj_t new_namedtuple_type(mp_obj_t name_in, mp_obj_t fields_in) {
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qstr name = mp_obj_str_get_qstr(name_in);
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size_t n_fields;
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mp_obj_t *fields;
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#if MICROPY_CPYTHON_COMPAT
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if (mp_obj_is_str(fields_in)) {
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fields_in = mp_obj_str_split(1, &fields_in);
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}
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#endif
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mp_obj_get_array(fields_in, &n_fields, &fields);
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return mp_obj_new_namedtuple_type(name, n_fields, fields);
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}
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MP_DEFINE_CONST_FUN_OBJ_2(mp_namedtuple_obj, new_namedtuple_type);
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#endif // MICROPY_PY_COLLECTIONS
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