Colin Hogben / micropython

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Dependents:   micropython-repl

py/objnamedtuple.c@10:33521d742af1, 2016-04-27 (annotated)

Committer:
Colin Hogben
Date:
Wed Apr 27 22:11:29 2016 +0100
Revision:
10:33521d742af1
Parent:
0:5868e8752d44 
Update README and version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pythontech 0:5868e8752d44 1 /*
pythontech 0:5868e8752d44 2 * This file is part of the Micro Python project, http://micropython.org/
pythontech 0:5868e8752d44 3 *
pythontech 0:5868e8752d44 4 * The MIT License (MIT)
pythontech 0:5868e8752d44 5 *
pythontech 0:5868e8752d44 6 * Copyright (c) 2013, 2014 Damien P. George
pythontech 0:5868e8752d44 7 * Copyright (c) 2014 Paul Sokolovsky
pythontech 0:5868e8752d44 8 *
pythontech 0:5868e8752d44 9 * Permission is hereby granted, free of charge, to any person obtaining a copy
pythontech 0:5868e8752d44 10 * of this software and associated documentation files (the "Software"), to deal
pythontech 0:5868e8752d44 11 * in the Software without restriction, including without limitation the rights
pythontech 0:5868e8752d44 12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
pythontech 0:5868e8752d44 13 * copies of the Software, and to permit persons to whom the Software is
pythontech 0:5868e8752d44 14 * furnished to do so, subject to the following conditions:
pythontech 0:5868e8752d44 15 *
pythontech 0:5868e8752d44 16 * The above copyright notice and this permission notice shall be included in
pythontech 0:5868e8752d44 17 * all copies or substantial portions of the Software.
pythontech 0:5868e8752d44 18 *
pythontech 0:5868e8752d44 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pythontech 0:5868e8752d44 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pythontech 0:5868e8752d44 21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pythontech 0:5868e8752d44 22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pythontech 0:5868e8752d44 23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pythontech 0:5868e8752d44 24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
pythontech 0:5868e8752d44 25 * THE SOFTWARE.
pythontech 0:5868e8752d44 26 */
pythontech 0:5868e8752d44 27
pythontech 0:5868e8752d44 28 #include <string.h>
pythontech 0:5868e8752d44 29
pythontech 0:5868e8752d44 30 #include "py/nlr.h"
pythontech 0:5868e8752d44 31 #include "py/objtuple.h"
pythontech 0:5868e8752d44 32 #include "py/runtime.h"
pythontech 0:5868e8752d44 33 #include "py/objstr.h"
pythontech 0:5868e8752d44 34
pythontech 0:5868e8752d44 35 #if MICROPY_PY_COLLECTIONS
pythontech 0:5868e8752d44 36
pythontech 0:5868e8752d44 37 typedef struct _mp_obj_namedtuple_type_t {
pythontech 0:5868e8752d44 38 mp_obj_type_t base;
pythontech 0:5868e8752d44 39 mp_uint_t n_fields;
pythontech 0:5868e8752d44 40 qstr fields[];
pythontech 0:5868e8752d44 41 } mp_obj_namedtuple_type_t;
pythontech 0:5868e8752d44 42
pythontech 0:5868e8752d44 43 typedef struct _mp_obj_namedtuple_t {
pythontech 0:5868e8752d44 44 mp_obj_tuple_t tuple;
pythontech 0:5868e8752d44 45 } mp_obj_namedtuple_t;
pythontech 0:5868e8752d44 46
pythontech 0:5868e8752d44 47 STATIC mp_uint_t namedtuple_find_field(const mp_obj_namedtuple_type_t *type, qstr name) {
pythontech 0:5868e8752d44 48 for (mp_uint_t i = 0; i < type->n_fields; i++) {
pythontech 0:5868e8752d44 49 if (type->fields[i] == name) {
pythontech 0:5868e8752d44 50 return i;
pythontech 0:5868e8752d44 51 }
pythontech 0:5868e8752d44 52 }
pythontech 0:5868e8752d44 53 return -1;
pythontech 0:5868e8752d44 54 }
pythontech 0:5868e8752d44 55
pythontech 0:5868e8752d44 56 STATIC void namedtuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
pythontech 0:5868e8752d44 57 (void)kind;
pythontech 0:5868e8752d44 58 mp_obj_namedtuple_t *o = MP_OBJ_TO_PTR(o_in);
pythontech 0:5868e8752d44 59 mp_printf(print, "%q", o->tuple.base.type->name);
pythontech 0:5868e8752d44 60 const qstr *fields = ((mp_obj_namedtuple_type_t*)o->tuple.base.type)->fields;
pythontech 0:5868e8752d44 61 mp_obj_attrtuple_print_helper(print, fields, &o->tuple);
pythontech 0:5868e8752d44 62 }
pythontech 0:5868e8752d44 63
pythontech 0:5868e8752d44 64 STATIC void namedtuple_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
pythontech 0:5868e8752d44 65 if (dest[0] == MP_OBJ_NULL) {
pythontech 0:5868e8752d44 66 // load attribute
pythontech 0:5868e8752d44 67 mp_obj_namedtuple_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 68 int id = namedtuple_find_field((mp_obj_namedtuple_type_t*)self->tuple.base.type, attr);
pythontech 0:5868e8752d44 69 if (id == -1) {
pythontech 0:5868e8752d44 70 return;
pythontech 0:5868e8752d44 71 }
pythontech 0:5868e8752d44 72 dest[0] = self->tuple.items[id];
pythontech 0:5868e8752d44 73 } else {
pythontech 0:5868e8752d44 74 // delete/store attribute
pythontech 0:5868e8752d44 75 // provide more detailed error message than we'd get by just returning
pythontech 0:5868e8752d44 76 nlr_raise(mp_obj_new_exception_msg(&mp_type_AttributeError, "can't set attribute"));
pythontech 0:5868e8752d44 77 }
pythontech 0:5868e8752d44 78 }
pythontech 0:5868e8752d44 79
pythontech 0:5868e8752d44 80 STATIC 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) {
pythontech 0:5868e8752d44 81 const mp_obj_namedtuple_type_t *type = (const mp_obj_namedtuple_type_t*)type_in;
pythontech 0:5868e8752d44 82 size_t num_fields = type->n_fields;
pythontech 0:5868e8752d44 83 if (n_args + n_kw != num_fields) {
pythontech 0:5868e8752d44 84 if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
pythontech 0:5868e8752d44 85 mp_arg_error_terse_mismatch();
pythontech 0:5868e8752d44 86 } else if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_NORMAL) {
pythontech 0:5868e8752d44 87 nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
pythontech 0:5868e8752d44 88 "function takes %d positional arguments but %d were given",
pythontech 0:5868e8752d44 89 num_fields, n_args + n_kw));
pythontech 0:5868e8752d44 90 } else if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED) {
pythontech 0:5868e8752d44 91 nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
pythontech 0:5868e8752d44 92 "%q() takes %d positional arguments but %d were given",
pythontech 0:5868e8752d44 93 type->base.name, num_fields, n_args + n_kw));
pythontech 0:5868e8752d44 94 }
pythontech 0:5868e8752d44 95 }
pythontech 0:5868e8752d44 96
pythontech 0:5868e8752d44 97 mp_obj_t *arg_objects;
pythontech 0:5868e8752d44 98 if (n_args == num_fields) {
pythontech 0:5868e8752d44 99 arg_objects = (mp_obj_t*)args;
pythontech 0:5868e8752d44 100 } else {
pythontech 0:5868e8752d44 101 size_t alloc_size = sizeof(mp_obj_t) * num_fields;
pythontech 0:5868e8752d44 102 arg_objects = alloca(alloc_size);
pythontech 0:5868e8752d44 103 memset(arg_objects, 0, alloc_size);
pythontech 0:5868e8752d44 104
pythontech 0:5868e8752d44 105 for (mp_uint_t i = 0; i < n_args; i++) {
pythontech 0:5868e8752d44 106 arg_objects[i] = args[i];
pythontech 0:5868e8752d44 107 }
pythontech 0:5868e8752d44 108
pythontech 0:5868e8752d44 109 for (mp_uint_t i = n_args; i < n_args + 2 * n_kw; i += 2) {
pythontech 0:5868e8752d44 110 qstr kw = mp_obj_str_get_qstr(args[i]);
pythontech 0:5868e8752d44 111 int id = namedtuple_find_field(type, kw);
pythontech 0:5868e8752d44 112 if (id == -1) {
pythontech 0:5868e8752d44 113 if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
pythontech 0:5868e8752d44 114 mp_arg_error_terse_mismatch();
pythontech 0:5868e8752d44 115 } else {
pythontech 0:5868e8752d44 116 nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
pythontech 0:5868e8752d44 117 "unexpected keyword argument '%q'", kw));
pythontech 0:5868e8752d44 118 }
pythontech 0:5868e8752d44 119 }
pythontech 0:5868e8752d44 120 if (arg_objects[id] != MP_OBJ_NULL) {
pythontech 0:5868e8752d44 121 if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
pythontech 0:5868e8752d44 122 mp_arg_error_terse_mismatch();
pythontech 0:5868e8752d44 123 } else {
pythontech 0:5868e8752d44 124 nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
pythontech 0:5868e8752d44 125 "function got multiple values for argument '%q'", kw));
pythontech 0:5868e8752d44 126 }
pythontech 0:5868e8752d44 127 }
pythontech 0:5868e8752d44 128 arg_objects[id] = args[i + 1];
pythontech 0:5868e8752d44 129 }
pythontech 0:5868e8752d44 130 }
pythontech 0:5868e8752d44 131
pythontech 0:5868e8752d44 132 mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(num_fields, arg_objects));
pythontech 0:5868e8752d44 133 tuple->base.type = type_in;
pythontech 0:5868e8752d44 134 return MP_OBJ_FROM_PTR(tuple);
pythontech 0:5868e8752d44 135 }
pythontech 0:5868e8752d44 136
pythontech 0:5868e8752d44 137 STATIC const mp_rom_obj_tuple_t namedtuple_base_tuple = {{&mp_type_tuple}, 1, {MP_ROM_PTR(&mp_type_tuple)}};
pythontech 0:5868e8752d44 138
pythontech 0:5868e8752d44 139 STATIC mp_obj_t mp_obj_new_namedtuple_type(qstr name, mp_uint_t n_fields, mp_obj_t *fields) {
pythontech 0:5868e8752d44 140 mp_obj_namedtuple_type_t *o = m_new_obj_var(mp_obj_namedtuple_type_t, qstr, n_fields);
pythontech 0:5868e8752d44 141 memset(&o->base, 0, sizeof(o->base));
pythontech 0:5868e8752d44 142 o->base.base.type = &mp_type_type;
pythontech 0:5868e8752d44 143 o->base.name = name;
pythontech 0:5868e8752d44 144 o->base.print = namedtuple_print;
pythontech 0:5868e8752d44 145 o->base.make_new = namedtuple_make_new;
pythontech 0:5868e8752d44 146 o->base.unary_op = mp_obj_tuple_unary_op;
pythontech 0:5868e8752d44 147 o->base.binary_op = mp_obj_tuple_binary_op;
pythontech 0:5868e8752d44 148 o->base.attr = namedtuple_attr;
pythontech 0:5868e8752d44 149 o->base.subscr = mp_obj_tuple_subscr;
pythontech 0:5868e8752d44 150 o->base.getiter = mp_obj_tuple_getiter;
pythontech 0:5868e8752d44 151 o->base.bases_tuple = (mp_obj_tuple_t*)(mp_rom_obj_tuple_t*)&namedtuple_base_tuple;
pythontech 0:5868e8752d44 152 o->n_fields = n_fields;
pythontech 0:5868e8752d44 153 for (mp_uint_t i = 0; i < n_fields; i++) {
pythontech 0:5868e8752d44 154 o->fields[i] = mp_obj_str_get_qstr(fields[i]);
pythontech 0:5868e8752d44 155 }
pythontech 0:5868e8752d44 156 return MP_OBJ_FROM_PTR(o);
pythontech 0:5868e8752d44 157 }
pythontech 0:5868e8752d44 158
pythontech 0:5868e8752d44 159 STATIC mp_obj_t new_namedtuple_type(mp_obj_t name_in, mp_obj_t fields_in) {
pythontech 0:5868e8752d44 160 qstr name = mp_obj_str_get_qstr(name_in);
pythontech 0:5868e8752d44 161 mp_uint_t n_fields;
pythontech 0:5868e8752d44 162 mp_obj_t *fields;
pythontech 0:5868e8752d44 163 #if MICROPY_CPYTHON_COMPAT
pythontech 0:5868e8752d44 164 if (MP_OBJ_IS_STR(fields_in)) {
pythontech 0:5868e8752d44 165 fields_in = mp_obj_str_split(1, &fields_in);
pythontech 0:5868e8752d44 166 }
pythontech 0:5868e8752d44 167 #endif
pythontech 0:5868e8752d44 168 if (!MP_OBJ_IS_TYPE(fields_in, &mp_type_list)) {
pythontech 0:5868e8752d44 169 nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "list required"));
pythontech 0:5868e8752d44 170 }
pythontech 0:5868e8752d44 171 mp_obj_list_get(fields_in, &n_fields, &fields);
pythontech 0:5868e8752d44 172 return mp_obj_new_namedtuple_type(name, n_fields, fields);
pythontech 0:5868e8752d44 173 }
pythontech 0:5868e8752d44 174 MP_DEFINE_CONST_FUN_OBJ_2(mp_namedtuple_obj, new_namedtuple_type);
pythontech 0:5868e8752d44 175
pythontech 0:5868e8752d44 176 #endif // MICROPY_PY_COLLECTIONS