c50772d19f
mp_obj_get_int_truncated will raise a TypeError if the argument is not an integral type. Use mp_obj_int_get_truncated only when you know the argument is a small or big int.
1117 lines
41 KiB
C
1117 lines
41 KiB
C
/*
|
||
* This file is part of the Micro Python project, http://micropython.org/
|
||
*
|
||
* The MIT License (MIT)
|
||
*
|
||
* Copyright (c) 2013, 2014 Damien P. George
|
||
* Copyright (c) 2014 Paul Sokolovsky
|
||
*
|
||
* 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 <stdio.h>
|
||
#include <stddef.h>
|
||
#include <string.h>
|
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#include <assert.h>
|
||
|
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#include "py/nlr.h"
|
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#include "py/objtype.h"
|
||
#include "py/runtime0.h"
|
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#include "py/runtime.h"
|
||
|
||
#if 0 // print debugging info
|
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#define DEBUG_PRINT (1)
|
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#define DEBUG_printf DEBUG_printf
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||
#else // don't print debugging info
|
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#define DEBUG_PRINT (0)
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#define DEBUG_printf(...) (void)0
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#endif
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|
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STATIC mp_obj_t static_class_method_make_new(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args);
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/******************************************************************************/
|
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// instance object
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|
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STATIC mp_obj_t mp_obj_new_instance(mp_obj_t class, uint subobjs) {
|
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mp_obj_instance_t *o = m_new_obj_var(mp_obj_instance_t, mp_obj_t, subobjs);
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o->base.type = class;
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mp_map_init(&o->members, 0);
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mp_seq_clear(o->subobj, 0, subobjs, sizeof(*o->subobj));
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return o;
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}
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|
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STATIC int instance_count_native_bases(const mp_obj_type_t *type, const mp_obj_type_t **last_native_base) {
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mp_uint_t len;
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mp_obj_t *items;
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mp_obj_tuple_get(type->bases_tuple, &len, &items);
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|
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int count = 0;
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for (uint i = 0; i < len; i++) {
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assert(MP_OBJ_IS_TYPE(items[i], &mp_type_type));
|
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const mp_obj_type_t *bt = (const mp_obj_type_t *)items[i];
|
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if (bt == &mp_type_object) {
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// Not a "real" type
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continue;
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}
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if (mp_obj_is_native_type(bt)) {
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*last_native_base = bt;
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count++;
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} else {
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count += instance_count_native_bases(bt, last_native_base);
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}
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}
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|
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return count;
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}
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|
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// TODO
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// This implements depth-first left-to-right MRO, which is not compliant with Python3 MRO
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// http://python-history.blogspot.com/2010/06/method-resolution-order.html
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// https://www.python.org/download/releases/2.3/mro/
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//
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// will keep lookup->dest[0]'s value (should be MP_OBJ_NULL on invocation) if attribute
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// is not found
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// will set lookup->dest[0] to MP_OBJ_SENTINEL if special method was found in a native
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// type base via slot id (as specified by lookup->meth_offset). As there can be only one
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// native base, it's known that it applies to instance->subobj[0]. In most cases, we also
|
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// don't need to know which type it was - because instance->subobj[0] is of that type.
|
||
// The only exception is when object is not yet constructed, then we need to know base
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// native type to construct its instance->subobj[0] from. But this case is handled via
|
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// instance_count_native_bases(), which returns a native base which it saw.
|
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struct class_lookup_data {
|
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mp_obj_instance_t *obj;
|
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qstr attr;
|
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mp_uint_t meth_offset;
|
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mp_obj_t *dest;
|
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bool is_type;
|
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};
|
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|
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STATIC void mp_obj_class_lookup(struct class_lookup_data *lookup, const mp_obj_type_t *type) {
|
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assert(lookup->dest[0] == NULL);
|
||
assert(lookup->dest[1] == NULL);
|
||
for (;;) {
|
||
// Optimize special method lookup for native types
|
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// This avoids extra method_name => slot lookup. On the other hand,
|
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// this should not be applied to class types, as will result in extra
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// lookup either.
|
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if (lookup->meth_offset != 0 && mp_obj_is_native_type(type)) {
|
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if (*(void**)((char*)type + lookup->meth_offset) != NULL) {
|
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DEBUG_printf("mp_obj_class_lookup: matched special meth slot for %s\n", qstr_str(lookup->attr));
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lookup->dest[0] = MP_OBJ_SENTINEL;
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return;
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}
|
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}
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||
|
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if (type->locals_dict != NULL) {
|
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// search locals_dict (the set of methods/attributes)
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assert(MP_OBJ_IS_TYPE(type->locals_dict, &mp_type_dict)); // Micro Python restriction, for now
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mp_map_t *locals_map = mp_obj_dict_get_map(type->locals_dict);
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mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(lookup->attr), MP_MAP_LOOKUP);
|
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if (elem != NULL) {
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if (lookup->is_type) {
|
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// If we look up a class method, we need to return original type for which we
|
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// do a lookup, not a (base) type in which we found the class method.
|
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const mp_obj_type_t *org_type = (const mp_obj_type_t*)lookup->obj;
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mp_convert_member_lookup(NULL, org_type, elem->value, lookup->dest);
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} else {
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mp_obj_instance_t *obj = lookup->obj;
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if (obj != MP_OBJ_NULL && mp_obj_is_native_type(type) && type != &mp_type_object /* object is not a real type */) {
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// If we're dealing with native base class, then it applies to native sub-object
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obj = obj->subobj[0];
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}
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mp_convert_member_lookup(obj, type, elem->value, lookup->dest);
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}
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#if DEBUG_PRINT
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printf("mp_obj_class_lookup: Returning: ");
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mp_obj_print(lookup->dest[0], PRINT_REPR); printf(" ");
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mp_obj_print(lookup->dest[1], PRINT_REPR); printf("\n");
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#endif
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return;
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}
|
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}
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|
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// Previous code block takes care about attributes defined in .locals_dict,
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// but some attributes of native types may be handled using .load_attr method,
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// so make sure we try to lookup those too.
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if (lookup->obj != MP_OBJ_NULL && !lookup->is_type && mp_obj_is_native_type(type) && type != &mp_type_object /* object is not a real type */) {
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mp_load_method_maybe(lookup->obj->subobj[0], lookup->attr, lookup->dest);
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if (lookup->dest[0] != MP_OBJ_NULL) {
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return;
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}
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}
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// attribute not found, keep searching base classes
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// for a const struct, this entry might be NULL
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if (type->bases_tuple == MP_OBJ_NULL) {
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return;
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}
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mp_uint_t len;
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mp_obj_t *items;
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mp_obj_tuple_get(type->bases_tuple, &len, &items);
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if (len == 0) {
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return;
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}
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for (uint i = 0; i < len - 1; i++) {
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assert(MP_OBJ_IS_TYPE(items[i], &mp_type_type));
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mp_obj_type_t *bt = (mp_obj_type_t*)items[i];
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if (bt == &mp_type_object) {
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// Not a "real" type
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continue;
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}
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mp_obj_class_lookup(lookup, bt);
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if (lookup->dest[0] != MP_OBJ_NULL) {
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return;
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}
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}
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|
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// search last base (simple tail recursion elimination)
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assert(MP_OBJ_IS_TYPE(items[len - 1], &mp_type_type));
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type = (mp_obj_type_t*)items[len - 1];
|
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if (type == &mp_type_object) {
|
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// Not a "real" type
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return;
|
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}
|
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}
|
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}
|
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|
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STATIC void instance_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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mp_obj_instance_t *self = self_in;
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qstr meth = (kind == PRINT_STR) ? MP_QSTR___str__ : MP_QSTR___repr__;
|
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mp_obj_t member[2] = {MP_OBJ_NULL};
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struct class_lookup_data lookup = {
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.obj = self,
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.attr = meth,
|
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.meth_offset = offsetof(mp_obj_type_t, print),
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.dest = member,
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.is_type = false,
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};
|
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mp_obj_class_lookup(&lookup, self->base.type);
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if (member[0] == MP_OBJ_NULL && kind == PRINT_STR) {
|
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// If there's no __str__, fall back to __repr__
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lookup.attr = MP_QSTR___repr__;
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lookup.meth_offset = 0;
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mp_obj_class_lookup(&lookup, self->base.type);
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}
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|
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if (member[0] == MP_OBJ_SENTINEL) {
|
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// Handle Exception subclasses specially
|
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if (mp_obj_is_native_exception_instance(self->subobj[0])) {
|
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if (kind != PRINT_STR) {
|
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mp_print_str(print, qstr_str(self->base.type->name));
|
||
}
|
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mp_obj_print_helper(print, self->subobj[0], kind | PRINT_EXC_SUBCLASS);
|
||
} else {
|
||
mp_obj_print_helper(print, self->subobj[0], kind);
|
||
}
|
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return;
|
||
}
|
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|
||
if (member[0] != MP_OBJ_NULL) {
|
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mp_obj_t r = mp_call_function_1(member[0], self_in);
|
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mp_obj_print_helper(print, r, PRINT_STR);
|
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return;
|
||
}
|
||
|
||
// TODO: CPython prints fully-qualified type name
|
||
mp_printf(print, "<%s object at %p>", mp_obj_get_type_str(self_in), self_in);
|
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}
|
||
|
||
mp_obj_t mp_obj_instance_make_new(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_type));
|
||
mp_obj_type_t *self = self_in;
|
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assert(mp_obj_is_instance_type(self));
|
||
|
||
const mp_obj_type_t *native_base;
|
||
uint num_native_bases = instance_count_native_bases(self, &native_base);
|
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assert(num_native_bases < 2);
|
||
|
||
mp_obj_instance_t *o = mp_obj_new_instance(self_in, num_native_bases);
|
||
|
||
// This executes only "__new__" part of obejection creation.
|
||
// TODO: This won't work will for classes with native bases.
|
||
// TODO: This is hack, should be resolved along the lines of
|
||
// https://github.com/micropython/micropython/issues/606#issuecomment-43685883
|
||
if (n_args == 1 && *args == MP_OBJ_SENTINEL) {
|
||
return o;
|
||
}
|
||
|
||
// look for __new__ function
|
||
mp_obj_t init_fn[2] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = NULL,
|
||
.attr = MP_QSTR___new__,
|
||
.meth_offset = offsetof(mp_obj_type_t, make_new),
|
||
.dest = init_fn,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self);
|
||
|
||
mp_obj_t new_ret = o;
|
||
if (init_fn[0] == MP_OBJ_SENTINEL) {
|
||
// Native type's constructor is what wins - it gets all our arguments,
|
||
// and none Python classes are initialized at all.
|
||
o->subobj[0] = native_base->make_new((mp_obj_type_t*)native_base, n_args, n_kw, args);
|
||
} else if (init_fn[0] != MP_OBJ_NULL) {
|
||
// now call Python class __new__ function with all args
|
||
if (n_args == 0 && n_kw == 0) {
|
||
new_ret = mp_call_function_n_kw(init_fn[0], 1, 0, (mp_obj_t*)(void*)&self_in);
|
||
} else {
|
||
mp_obj_t *args2 = m_new(mp_obj_t, 1 + n_args + 2 * n_kw);
|
||
args2[0] = self_in;
|
||
memcpy(args2 + 1, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
|
||
new_ret = mp_call_function_n_kw(init_fn[0], n_args + 1, n_kw, args2);
|
||
m_del(mp_obj_t, args2, 1 + n_args + 2 * n_kw);
|
||
}
|
||
|
||
}
|
||
|
||
// https://docs.python.org/3.4/reference/datamodel.html#object.__new__
|
||
// "If __new__() does not return an instance of cls, then the new instance’s __init__() method will not be invoked."
|
||
if (mp_obj_get_type(new_ret) != self_in) {
|
||
return new_ret;
|
||
}
|
||
|
||
o = new_ret;
|
||
|
||
// now call Python class __init__ function with all args
|
||
init_fn[0] = init_fn[1] = MP_OBJ_NULL;
|
||
lookup.obj = o;
|
||
lookup.attr = MP_QSTR___init__;
|
||
lookup.meth_offset = 0;
|
||
mp_obj_class_lookup(&lookup, self);
|
||
if (init_fn[0] != MP_OBJ_NULL) {
|
||
mp_obj_t init_ret;
|
||
if (n_args == 0 && n_kw == 0) {
|
||
init_ret = mp_call_method_n_kw(0, 0, init_fn);
|
||
} else {
|
||
mp_obj_t *args2 = m_new(mp_obj_t, 2 + n_args + 2 * n_kw);
|
||
args2[0] = init_fn[0];
|
||
args2[1] = init_fn[1];
|
||
memcpy(args2 + 2, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
|
||
init_ret = mp_call_method_n_kw(n_args, n_kw, args2);
|
||
m_del(mp_obj_t, args2, 2 + n_args + 2 * n_kw);
|
||
}
|
||
if (init_ret != mp_const_none) {
|
||
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
|
||
"__init__() should return None"));
|
||
} else {
|
||
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
|
||
"__init__() should return None, not '%s'", mp_obj_get_type_str(init_ret)));
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
return o;
|
||
}
|
||
|
||
const qstr mp_unary_op_method_name[] = {
|
||
[MP_UNARY_OP_BOOL] = MP_QSTR___bool__,
|
||
[MP_UNARY_OP_LEN] = MP_QSTR___len__,
|
||
[MP_UNARY_OP_HASH] = MP_QSTR___hash__,
|
||
#if MICROPY_PY_ALL_SPECIAL_METHODS
|
||
[MP_UNARY_OP_POSITIVE] = MP_QSTR___pos__,
|
||
[MP_UNARY_OP_NEGATIVE] = MP_QSTR___neg__,
|
||
[MP_UNARY_OP_INVERT] = MP_QSTR___invert__,
|
||
#endif
|
||
[MP_UNARY_OP_NOT] = MP_QSTR_, // don't need to implement this, used to make sure array has full size
|
||
};
|
||
|
||
STATIC mp_obj_t instance_unary_op(mp_uint_t op, mp_obj_t self_in) {
|
||
mp_obj_instance_t *self = self_in;
|
||
qstr op_name = mp_unary_op_method_name[op];
|
||
/* Still try to lookup native slot
|
||
if (op_name == 0) {
|
||
return MP_OBJ_NULL;
|
||
}
|
||
*/
|
||
mp_obj_t member[2] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.attr = op_name,
|
||
.meth_offset = offsetof(mp_obj_type_t, unary_op),
|
||
.dest = member,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
if (member[0] == MP_OBJ_SENTINEL) {
|
||
return mp_unary_op(op, self->subobj[0]);
|
||
} else if (member[0] != MP_OBJ_NULL) {
|
||
mp_obj_t val = mp_call_function_1(member[0], self_in);
|
||
// __hash__ must return a small int
|
||
if (op == MP_UNARY_OP_HASH) {
|
||
val = MP_OBJ_NEW_SMALL_INT(mp_obj_get_int_truncated(val));
|
||
}
|
||
return val;
|
||
} else {
|
||
if (op == MP_UNARY_OP_HASH) {
|
||
lookup.attr = MP_QSTR___eq__;
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
if (member[0] == MP_OBJ_NULL) {
|
||
// https://docs.python.org/3/reference/datamodel.html#object.__hash__
|
||
// "User-defined classes have __eq__() and __hash__() methods by default;
|
||
// with them, all objects compare unequal (except with themselves) and
|
||
// x.__hash__() returns an appropriate value such that x == y implies
|
||
// both that x is y and hash(x) == hash(y)."
|
||
return MP_OBJ_NEW_SMALL_INT((mp_uint_t)self_in);
|
||
}
|
||
// "A class that overrides __eq__() and does not define __hash__() will have its __hash__() implicitly set to None.
|
||
// When the __hash__() method of a class is None, instances of the class will raise an appropriate TypeError"
|
||
}
|
||
|
||
return MP_OBJ_NULL; // op not supported
|
||
}
|
||
}
|
||
|
||
const qstr mp_binary_op_method_name[] = {
|
||
/*
|
||
MP_BINARY_OP_OR,
|
||
MP_BINARY_OP_XOR,
|
||
MP_BINARY_OP_AND,
|
||
MP_BINARY_OP_LSHIFT,
|
||
MP_BINARY_OP_RSHIFT,
|
||
*/
|
||
[MP_BINARY_OP_ADD] = MP_QSTR___add__,
|
||
[MP_BINARY_OP_SUBTRACT] = MP_QSTR___sub__,
|
||
#if MICROPY_PY_ALL_SPECIAL_METHODS
|
||
[MP_BINARY_OP_MULTIPLY] = MP_QSTR___mul__,
|
||
[MP_BINARY_OP_FLOOR_DIVIDE] = MP_QSTR___floordiv__,
|
||
[MP_BINARY_OP_TRUE_DIVIDE] = MP_QSTR___truediv__,
|
||
#endif
|
||
/*
|
||
MP_BINARY_OP_MODULO,
|
||
MP_BINARY_OP_POWER,
|
||
MP_BINARY_OP_INPLACE_OR,
|
||
MP_BINARY_OP_INPLACE_XOR,
|
||
MP_BINARY_OP_INPLACE_AND,
|
||
MP_BINARY_OP_INPLACE_LSHIFT,
|
||
MP_BINARY_OP_INPLACE_RSHIFT,*/
|
||
#if MICROPY_PY_ALL_SPECIAL_METHODS
|
||
[MP_BINARY_OP_INPLACE_ADD] = MP_QSTR___iadd__,
|
||
[MP_BINARY_OP_INPLACE_SUBTRACT] = MP_QSTR___isub__,
|
||
#endif
|
||
/*MP_BINARY_OP_INPLACE_MULTIPLY,
|
||
MP_BINARY_OP_INPLACE_FLOOR_DIVIDE,
|
||
MP_BINARY_OP_INPLACE_TRUE_DIVIDE,
|
||
MP_BINARY_OP_INPLACE_MODULO,
|
||
MP_BINARY_OP_INPLACE_POWER,*/
|
||
[MP_BINARY_OP_LESS] = MP_QSTR___lt__,
|
||
[MP_BINARY_OP_MORE] = MP_QSTR___gt__,
|
||
[MP_BINARY_OP_EQUAL] = MP_QSTR___eq__,
|
||
[MP_BINARY_OP_LESS_EQUAL] = MP_QSTR___le__,
|
||
[MP_BINARY_OP_MORE_EQUAL] = MP_QSTR___ge__,
|
||
/*
|
||
MP_BINARY_OP_NOT_EQUAL, // a != b calls a == b and inverts result
|
||
*/
|
||
[MP_BINARY_OP_IN] = MP_QSTR___contains__,
|
||
/*
|
||
MP_BINARY_OP_IS,
|
||
*/
|
||
[MP_BINARY_OP_EXCEPTION_MATCH] = MP_QSTR_, // not implemented, used to make sure array has full size
|
||
};
|
||
|
||
STATIC mp_obj_t instance_binary_op(mp_uint_t op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
|
||
// Note: For ducktyping, CPython does not look in the instance members or use
|
||
// __getattr__ or __getattribute__. It only looks in the class dictionary.
|
||
mp_obj_instance_t *lhs = lhs_in;
|
||
qstr op_name = mp_binary_op_method_name[op];
|
||
/* Still try to lookup native slot
|
||
if (op_name == 0) {
|
||
return MP_OBJ_NULL;
|
||
}
|
||
*/
|
||
mp_obj_t dest[3] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = lhs,
|
||
.attr = op_name,
|
||
.meth_offset = offsetof(mp_obj_type_t, binary_op),
|
||
.dest = dest,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, lhs->base.type);
|
||
if (dest[0] == MP_OBJ_SENTINEL) {
|
||
return mp_binary_op(op, lhs->subobj[0], rhs_in);
|
||
} else if (dest[0] != MP_OBJ_NULL) {
|
||
dest[2] = rhs_in;
|
||
return mp_call_method_n_kw(1, 0, dest);
|
||
} else {
|
||
return MP_OBJ_NULL; // op not supported
|
||
}
|
||
}
|
||
|
||
STATIC void mp_obj_instance_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
|
||
// logic: look in instance members then class locals
|
||
assert(mp_obj_is_instance_type(mp_obj_get_type(self_in)));
|
||
mp_obj_instance_t *self = self_in;
|
||
|
||
mp_map_elem_t *elem = mp_map_lookup(&self->members, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP);
|
||
if (elem != NULL) {
|
||
// object member, always treated as a value
|
||
// TODO should we check for properties?
|
||
dest[0] = elem->value;
|
||
return;
|
||
}
|
||
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.attr = attr,
|
||
.meth_offset = 0,
|
||
.dest = dest,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
mp_obj_t member = dest[0];
|
||
if (member != MP_OBJ_NULL) {
|
||
#if MICROPY_PY_BUILTINS_PROPERTY
|
||
if (MP_OBJ_IS_TYPE(member, &mp_type_property)) {
|
||
// object member is a property; delegate the load to the property
|
||
// Note: This is an optimisation for code size and execution time.
|
||
// The proper way to do it is have the functionality just below
|
||
// in a __get__ method of the property object, and then it would
|
||
// be called by the descriptor code down below. But that way
|
||
// requires overhead for the nested mp_call's and overhead for
|
||
// the code.
|
||
const mp_obj_t *proxy = mp_obj_property_get(member);
|
||
if (proxy[0] == mp_const_none) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_AttributeError, "unreadable attribute"));
|
||
} else {
|
||
dest[0] = mp_call_function_n_kw(proxy[0], 1, 0, &self_in);
|
||
}
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
#if MICROPY_PY_DESCRIPTORS
|
||
// found a class attribute; if it has a __get__ method then call it with the
|
||
// class instance and class as arguments and return the result
|
||
// Note that this is functionally correct but very slow: each load_attr
|
||
// requires an extra mp_load_method_maybe to check for the __get__.
|
||
mp_obj_t attr_get_method[4];
|
||
mp_load_method_maybe(member, MP_QSTR___get__, attr_get_method);
|
||
if (attr_get_method[0] != MP_OBJ_NULL) {
|
||
attr_get_method[2] = self_in;
|
||
attr_get_method[3] = mp_obj_get_type(self_in);
|
||
dest[0] = mp_call_method_n_kw(2, 0, attr_get_method);
|
||
}
|
||
#endif
|
||
return;
|
||
}
|
||
|
||
// try __getattr__
|
||
if (attr != MP_QSTR___getattr__) {
|
||
mp_obj_t dest2[3];
|
||
mp_load_method_maybe(self_in, MP_QSTR___getattr__, dest2);
|
||
if (dest2[0] != MP_OBJ_NULL) {
|
||
// __getattr__ exists, call it and return its result
|
||
// XXX if this fails to load the requested attr, should we catch the attribute error and return silently?
|
||
dest2[2] = MP_OBJ_NEW_QSTR(attr);
|
||
dest[0] = mp_call_method_n_kw(1, 0, dest2);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
STATIC bool mp_obj_instance_store_attr(mp_obj_t self_in, qstr attr, mp_obj_t value) {
|
||
mp_obj_instance_t *self = self_in;
|
||
|
||
#if MICROPY_PY_BUILTINS_PROPERTY || MICROPY_PY_DESCRIPTORS
|
||
// With property and/or descriptors enabled we need to do a lookup
|
||
// first in the class dict for the attribute to see if the store should
|
||
// be delegated.
|
||
// Note: this makes all stores slow... how to fix?
|
||
mp_obj_t member[2] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.attr = attr,
|
||
.meth_offset = 0,
|
||
.dest = member,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
|
||
if (member[0] != MP_OBJ_NULL) {
|
||
#if MICROPY_PY_BUILTINS_PROPERTY
|
||
if (MP_OBJ_IS_TYPE(member[0], &mp_type_property)) {
|
||
// attribute exists and is a property; delegate the store/delete
|
||
// Note: This is an optimisation for code size and execution time.
|
||
// The proper way to do it is have the functionality just below in
|
||
// a __set__/__delete__ method of the property object, and then it
|
||
// would be called by the descriptor code down below. But that way
|
||
// requires overhead for the nested mp_call's and overhead for
|
||
// the code.
|
||
const mp_obj_t *proxy = mp_obj_property_get(member[0]);
|
||
mp_obj_t dest[2] = {self_in, value};
|
||
if (value == MP_OBJ_NULL) {
|
||
// delete attribute
|
||
if (proxy[2] == mp_const_none) {
|
||
// TODO better error message?
|
||
return false;
|
||
} else {
|
||
mp_call_function_n_kw(proxy[2], 1, 0, dest);
|
||
return true;
|
||
}
|
||
} else {
|
||
// store attribute
|
||
if (proxy[1] == mp_const_none) {
|
||
// TODO better error message?
|
||
return false;
|
||
} else {
|
||
mp_call_function_n_kw(proxy[1], 2, 0, dest);
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
|
||
#if MICROPY_PY_DESCRIPTORS
|
||
// found a class attribute; if it has a __set__/__delete__ method then
|
||
// call it with the class instance (and value) as arguments
|
||
if (value == MP_OBJ_NULL) {
|
||
// delete attribute
|
||
mp_obj_t attr_delete_method[3];
|
||
mp_load_method_maybe(member[0], MP_QSTR___delete__, attr_delete_method);
|
||
if (attr_delete_method[0] != MP_OBJ_NULL) {
|
||
attr_delete_method[2] = self_in;
|
||
mp_call_method_n_kw(1, 0, attr_delete_method);
|
||
return true;
|
||
}
|
||
} else {
|
||
// store attribute
|
||
mp_obj_t attr_set_method[4];
|
||
mp_load_method_maybe(member[0], MP_QSTR___set__, attr_set_method);
|
||
if (attr_set_method[0] != MP_OBJ_NULL) {
|
||
attr_set_method[2] = self_in;
|
||
attr_set_method[3] = value;
|
||
mp_call_method_n_kw(2, 0, attr_set_method);
|
||
return true;
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
#endif
|
||
|
||
if (value == MP_OBJ_NULL) {
|
||
// delete attribute
|
||
mp_map_elem_t *elem = mp_map_lookup(&self->members, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP_REMOVE_IF_FOUND);
|
||
return elem != NULL;
|
||
} else {
|
||
// store attribute
|
||
mp_map_lookup(&self->members, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
|
||
return true;
|
||
}
|
||
}
|
||
|
||
void mp_obj_instance_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
|
||
if (dest[0] == MP_OBJ_NULL) {
|
||
mp_obj_instance_load_attr(self_in, attr, dest);
|
||
} else {
|
||
if (mp_obj_instance_store_attr(self_in, attr, dest[1])) {
|
||
dest[0] = MP_OBJ_NULL; // indicate success
|
||
}
|
||
}
|
||
}
|
||
|
||
STATIC mp_obj_t instance_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
|
||
mp_obj_instance_t *self = self_in;
|
||
mp_obj_t member[2] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.meth_offset = offsetof(mp_obj_type_t, subscr),
|
||
.dest = member,
|
||
.is_type = false,
|
||
};
|
||
uint meth_args;
|
||
if (value == MP_OBJ_NULL) {
|
||
// delete item
|
||
lookup.attr = MP_QSTR___delitem__;
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
meth_args = 2;
|
||
} else if (value == MP_OBJ_SENTINEL) {
|
||
// load item
|
||
lookup.attr = MP_QSTR___getitem__;
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
meth_args = 2;
|
||
} else {
|
||
// store item
|
||
lookup.attr = MP_QSTR___setitem__;
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
meth_args = 3;
|
||
}
|
||
if (member[0] == MP_OBJ_SENTINEL) {
|
||
return mp_obj_subscr(self->subobj[0], index, value);
|
||
} else if (member[0] != MP_OBJ_NULL) {
|
||
mp_obj_t args[3] = {self_in, index, value};
|
||
// TODO probably need to call mp_convert_member_lookup, and use mp_call_method_n_kw
|
||
mp_obj_t ret = mp_call_function_n_kw(member[0], meth_args, 0, args);
|
||
if (value == MP_OBJ_SENTINEL) {
|
||
return ret;
|
||
} else {
|
||
return mp_const_none;
|
||
}
|
||
} else {
|
||
return MP_OBJ_NULL; // op not supported
|
||
}
|
||
}
|
||
|
||
STATIC mp_obj_t mp_obj_instance_get_call(mp_obj_t self_in) {
|
||
mp_obj_instance_t *self = self_in;
|
||
mp_obj_t member[2] = {MP_OBJ_NULL, MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.attr = MP_QSTR___call__,
|
||
.meth_offset = offsetof(mp_obj_type_t, call),
|
||
.dest = member,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
return member[0];
|
||
}
|
||
|
||
bool mp_obj_instance_is_callable(mp_obj_t self_in) {
|
||
return mp_obj_instance_get_call(self_in) != MP_OBJ_NULL;
|
||
}
|
||
|
||
mp_obj_t mp_obj_instance_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
||
mp_obj_t call = mp_obj_instance_get_call(self_in);
|
||
if (call == MP_OBJ_NULL) {
|
||
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
|
||
"object not callable"));
|
||
} else {
|
||
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
|
||
"'%s' object is not callable", mp_obj_get_type_str(self_in)));
|
||
}
|
||
}
|
||
mp_obj_instance_t *self = self_in;
|
||
if (call == MP_OBJ_SENTINEL) {
|
||
return mp_call_function_n_kw(self->subobj[0], n_args, n_kw, args);
|
||
}
|
||
mp_obj_t meth = mp_obj_new_bound_meth(call, self);
|
||
return mp_call_function_n_kw(meth, n_args, n_kw, args);
|
||
}
|
||
|
||
STATIC mp_obj_t instance_getiter(mp_obj_t self_in) {
|
||
mp_obj_instance_t *self = self_in;
|
||
mp_obj_t member[2] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.attr = MP_QSTR___iter__,
|
||
.meth_offset = offsetof(mp_obj_type_t, getiter),
|
||
.dest = member,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
if (member[0] == MP_OBJ_NULL) {
|
||
return MP_OBJ_NULL;
|
||
} else if (member[0] == MP_OBJ_SENTINEL) {
|
||
mp_obj_type_t *type = mp_obj_get_type(self->subobj[0]);
|
||
return type->getiter(self->subobj[0]);
|
||
} else {
|
||
return mp_call_method_n_kw(0, 0, member);
|
||
}
|
||
}
|
||
|
||
STATIC mp_int_t instance_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
|
||
mp_obj_instance_t *self = self_in;
|
||
mp_obj_t member[2] = {MP_OBJ_NULL};
|
||
struct class_lookup_data lookup = {
|
||
.obj = self,
|
||
.attr = MP_QSTR_, // don't actually look for a method
|
||
.meth_offset = offsetof(mp_obj_type_t, buffer_p.get_buffer),
|
||
.dest = member,
|
||
.is_type = false,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self->base.type);
|
||
if (member[0] == MP_OBJ_SENTINEL) {
|
||
mp_obj_type_t *type = mp_obj_get_type(self->subobj[0]);
|
||
return type->buffer_p.get_buffer(self->subobj[0], bufinfo, flags);
|
||
} else {
|
||
return 1; // object does not support buffer protocol
|
||
}
|
||
}
|
||
|
||
/******************************************************************************/
|
||
// type object
|
||
// - the struct is mp_obj_type_t and is defined in obj.h so const types can be made
|
||
// - there is a constant mp_obj_type_t (called mp_type_type) for the 'type' object
|
||
// - creating a new class (a new type) creates a new mp_obj_type_t
|
||
|
||
STATIC void type_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
||
(void)kind;
|
||
mp_obj_type_t *self = self_in;
|
||
mp_printf(print, "<class '%q'>", self->name);
|
||
}
|
||
|
||
STATIC mp_obj_t type_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
||
(void)type_in;
|
||
|
||
mp_arg_check_num(n_args, n_kw, 1, 3, false);
|
||
|
||
switch (n_args) {
|
||
case 1:
|
||
return mp_obj_get_type(args[0]);
|
||
|
||
case 3:
|
||
// args[0] = name
|
||
// args[1] = bases tuple
|
||
// args[2] = locals dict
|
||
return mp_obj_new_type(mp_obj_str_get_qstr(args[0]), args[1], args[2]);
|
||
|
||
default:
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "type takes 1 or 3 arguments"));
|
||
}
|
||
}
|
||
|
||
STATIC mp_obj_t type_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
||
// instantiate an instance of a class
|
||
|
||
mp_obj_type_t *self = self_in;
|
||
|
||
if (self->make_new == NULL) {
|
||
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "cannot create instance"));
|
||
} else {
|
||
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
|
||
"cannot create '%q' instances", self->name));
|
||
}
|
||
}
|
||
|
||
// make new instance
|
||
mp_obj_t o = self->make_new(self, n_args, n_kw, args);
|
||
|
||
// return new instance
|
||
return o;
|
||
}
|
||
|
||
STATIC void type_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
|
||
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_type));
|
||
mp_obj_type_t *self = self_in;
|
||
|
||
if (dest[0] == MP_OBJ_NULL) {
|
||
// load attribute
|
||
#if MICROPY_CPYTHON_COMPAT
|
||
if (attr == MP_QSTR___name__) {
|
||
dest[0] = MP_OBJ_NEW_QSTR(self->name);
|
||
return;
|
||
}
|
||
#endif
|
||
struct class_lookup_data lookup = {
|
||
.obj = self_in,
|
||
.attr = attr,
|
||
.meth_offset = 0,
|
||
.dest = dest,
|
||
.is_type = true,
|
||
};
|
||
mp_obj_class_lookup(&lookup, self);
|
||
} else {
|
||
// delete/store attribute
|
||
|
||
// TODO CPython allows STORE_ATTR to a class, but is this the correct implementation?
|
||
|
||
if (self->locals_dict != NULL) {
|
||
assert(MP_OBJ_IS_TYPE(self->locals_dict, &mp_type_dict)); // Micro Python restriction, for now
|
||
mp_map_t *locals_map = mp_obj_dict_get_map(self->locals_dict);
|
||
if (dest[1] == MP_OBJ_NULL) {
|
||
// delete attribute
|
||
mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP_REMOVE_IF_FOUND);
|
||
// note that locals_map may be in ROM, so remove will fail in that case
|
||
if (elem != NULL) {
|
||
dest[0] = MP_OBJ_NULL; // indicate success
|
||
}
|
||
} else {
|
||
// store attribute
|
||
mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
|
||
// note that locals_map may be in ROM, so add will fail in that case
|
||
if (elem != NULL) {
|
||
elem->value = dest[1];
|
||
dest[0] = MP_OBJ_NULL; // indicate success
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
const mp_obj_type_t mp_type_type = {
|
||
{ &mp_type_type },
|
||
.name = MP_QSTR_type,
|
||
.print = type_print,
|
||
.make_new = type_make_new,
|
||
.call = type_call,
|
||
.unary_op = mp_generic_unary_op,
|
||
.attr = type_attr,
|
||
};
|
||
|
||
mp_obj_t mp_obj_new_type(qstr name, mp_obj_t bases_tuple, mp_obj_t locals_dict) {
|
||
assert(MP_OBJ_IS_TYPE(bases_tuple, &mp_type_tuple)); // Micro Python restriction, for now
|
||
assert(MP_OBJ_IS_TYPE(locals_dict, &mp_type_dict)); // Micro Python restriction, for now
|
||
|
||
// TODO might need to make a copy of locals_dict; at least that's how CPython does it
|
||
|
||
// Basic validation of base classes
|
||
mp_uint_t len;
|
||
mp_obj_t *items;
|
||
mp_obj_tuple_get(bases_tuple, &len, &items);
|
||
for (uint i = 0; i < len; i++) {
|
||
assert(MP_OBJ_IS_TYPE(items[i], &mp_type_type));
|
||
mp_obj_type_t *t = items[i];
|
||
// TODO: Verify with CPy, tested on function type
|
||
if (t->make_new == NULL) {
|
||
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
|
||
"type is not an acceptable base type"));
|
||
} else {
|
||
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
|
||
"type '%q' is not an acceptable base type", t->name));
|
||
}
|
||
}
|
||
}
|
||
|
||
mp_obj_type_t *o = m_new0(mp_obj_type_t, 1);
|
||
o->base.type = &mp_type_type;
|
||
o->name = name;
|
||
o->print = instance_print;
|
||
o->make_new = mp_obj_instance_make_new;
|
||
o->call = mp_obj_instance_call;
|
||
o->unary_op = instance_unary_op;
|
||
o->binary_op = instance_binary_op;
|
||
o->attr = mp_obj_instance_attr;
|
||
o->subscr = instance_subscr;
|
||
o->getiter = instance_getiter;
|
||
//o->iternext = ; not implemented
|
||
o->buffer_p.get_buffer = instance_get_buffer;
|
||
//o->stream_p = ; not implemented
|
||
o->bases_tuple = bases_tuple;
|
||
o->locals_dict = locals_dict;
|
||
|
||
const mp_obj_type_t *native_base;
|
||
uint num_native_bases = instance_count_native_bases(o, &native_base);
|
||
if (num_native_bases > 1) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "multiple bases have instance lay-out conflict"));
|
||
}
|
||
|
||
mp_map_t *locals_map = mp_obj_dict_get_map(o->locals_dict);
|
||
mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(MP_QSTR___new__), MP_MAP_LOOKUP);
|
||
if (elem != NULL) {
|
||
// __new__ slot exists; check if it is a function
|
||
if (MP_OBJ_IS_FUN(elem->value)) {
|
||
// __new__ is a function, wrap it in a staticmethod decorator
|
||
elem->value = static_class_method_make_new((mp_obj_t)&mp_type_staticmethod, 1, 0, &elem->value);
|
||
}
|
||
}
|
||
|
||
return o;
|
||
}
|
||
|
||
/******************************************************************************/
|
||
// super object
|
||
|
||
typedef struct _mp_obj_super_t {
|
||
mp_obj_base_t base;
|
||
mp_obj_t type;
|
||
mp_obj_t obj;
|
||
} mp_obj_super_t;
|
||
|
||
STATIC void super_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
||
(void)kind;
|
||
mp_obj_super_t *self = self_in;
|
||
mp_print_str(print, "<super: ");
|
||
mp_obj_print_helper(print, self->type, PRINT_STR);
|
||
mp_print_str(print, ", ");
|
||
mp_obj_print_helper(print, self->obj, PRINT_STR);
|
||
mp_print_str(print, ">");
|
||
}
|
||
|
||
STATIC mp_obj_t super_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
||
(void)type_in;
|
||
// 0 arguments are turned into 2 in the compiler
|
||
// 1 argument is not yet implemented
|
||
mp_arg_check_num(n_args, n_kw, 2, 2, false);
|
||
return mp_obj_new_super(args[0], args[1]);
|
||
}
|
||
|
||
STATIC void super_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
|
||
if (dest[0] != MP_OBJ_NULL) {
|
||
// not load attribute
|
||
return;
|
||
}
|
||
|
||
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_super));
|
||
mp_obj_super_t *self = self_in;
|
||
|
||
assert(MP_OBJ_IS_TYPE(self->type, &mp_type_type));
|
||
|
||
mp_obj_type_t *type = self->type;
|
||
|
||
// for a const struct, this entry might be NULL
|
||
if (type->bases_tuple == MP_OBJ_NULL) {
|
||
return;
|
||
}
|
||
|
||
mp_uint_t len;
|
||
mp_obj_t *items;
|
||
mp_obj_tuple_get(type->bases_tuple, &len, &items);
|
||
struct class_lookup_data lookup = {
|
||
.obj = self->obj,
|
||
.attr = attr,
|
||
.meth_offset = 0,
|
||
.dest = dest,
|
||
.is_type = false,
|
||
};
|
||
for (uint i = 0; i < len; i++) {
|
||
assert(MP_OBJ_IS_TYPE(items[i], &mp_type_type));
|
||
mp_obj_class_lookup(&lookup, (mp_obj_type_t*)items[i]);
|
||
if (dest[0] != MP_OBJ_NULL) {
|
||
return;
|
||
}
|
||
}
|
||
mp_obj_class_lookup(&lookup, &mp_type_object);
|
||
}
|
||
|
||
const mp_obj_type_t mp_type_super = {
|
||
{ &mp_type_type },
|
||
.name = MP_QSTR_super,
|
||
.print = super_print,
|
||
.make_new = super_make_new,
|
||
.attr = super_attr,
|
||
};
|
||
|
||
mp_obj_t mp_obj_new_super(mp_obj_t type, mp_obj_t obj) {
|
||
mp_obj_super_t *o = m_new_obj(mp_obj_super_t);
|
||
*o = (mp_obj_super_t){{&mp_type_super}, type, obj};
|
||
return o;
|
||
}
|
||
|
||
/******************************************************************************/
|
||
// subclassing and built-ins specific to types
|
||
|
||
// object and classinfo should be type objects
|
||
// (but the function will fail gracefully if they are not)
|
||
bool mp_obj_is_subclass_fast(mp_const_obj_t object, mp_const_obj_t classinfo) {
|
||
for (;;) {
|
||
if (object == classinfo) {
|
||
return true;
|
||
}
|
||
|
||
// not equivalent classes, keep searching base classes
|
||
|
||
// object should always be a type object, but just return false if it's not
|
||
if (!MP_OBJ_IS_TYPE(object, &mp_type_type)) {
|
||
return false;
|
||
}
|
||
|
||
const mp_obj_type_t *self = object;
|
||
|
||
// for a const struct, this entry might be NULL
|
||
if (self->bases_tuple == MP_OBJ_NULL) {
|
||
return false;
|
||
}
|
||
|
||
// get the base objects (they should be type objects)
|
||
mp_uint_t len;
|
||
mp_obj_t *items;
|
||
mp_obj_tuple_get(self->bases_tuple, &len, &items);
|
||
if (len == 0) {
|
||
return false;
|
||
}
|
||
|
||
// iterate through the base objects
|
||
for (uint i = 0; i < len - 1; i++) {
|
||
if (mp_obj_is_subclass_fast(items[i], classinfo)) {
|
||
return true;
|
||
}
|
||
}
|
||
|
||
// search last base (simple tail recursion elimination)
|
||
object = items[len - 1];
|
||
}
|
||
}
|
||
|
||
STATIC mp_obj_t mp_obj_is_subclass(mp_obj_t object, mp_obj_t classinfo) {
|
||
mp_uint_t len;
|
||
mp_obj_t *items;
|
||
if (MP_OBJ_IS_TYPE(classinfo, &mp_type_type)) {
|
||
len = 1;
|
||
items = &classinfo;
|
||
} else if (MP_OBJ_IS_TYPE(classinfo, &mp_type_tuple)) {
|
||
mp_obj_tuple_get(classinfo, &len, &items);
|
||
} else {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "issubclass() arg 2 must be a class or a tuple of classes"));
|
||
}
|
||
|
||
for (uint i = 0; i < len; i++) {
|
||
// We explicitly check for 'object' here since no-one explicitly derives from it
|
||
if (items[i] == &mp_type_object || mp_obj_is_subclass_fast(object, items[i])) {
|
||
return mp_const_true;
|
||
}
|
||
}
|
||
return mp_const_false;
|
||
}
|
||
|
||
STATIC mp_obj_t mp_builtin_issubclass(mp_obj_t object, mp_obj_t classinfo) {
|
||
if (!MP_OBJ_IS_TYPE(object, &mp_type_type)) {
|
||
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "issubclass() arg 1 must be a class"));
|
||
}
|
||
return mp_obj_is_subclass(object, classinfo);
|
||
}
|
||
|
||
MP_DEFINE_CONST_FUN_OBJ_2(mp_builtin_issubclass_obj, mp_builtin_issubclass);
|
||
|
||
STATIC mp_obj_t mp_builtin_isinstance(mp_obj_t object, mp_obj_t classinfo) {
|
||
return mp_obj_is_subclass(mp_obj_get_type(object), classinfo);
|
||
}
|
||
|
||
MP_DEFINE_CONST_FUN_OBJ_2(mp_builtin_isinstance_obj, mp_builtin_isinstance);
|
||
|
||
mp_obj_t mp_instance_cast_to_native_base(mp_const_obj_t self_in, mp_const_obj_t native_type) {
|
||
mp_obj_type_t *self_type = mp_obj_get_type(self_in);
|
||
if (!mp_obj_is_subclass_fast(self_type, native_type)) {
|
||
return MP_OBJ_NULL;
|
||
}
|
||
mp_obj_instance_t *self = (mp_obj_instance_t*)self_in;
|
||
return self->subobj[0];
|
||
}
|
||
|
||
/******************************************************************************/
|
||
// staticmethod and classmethod types (probably should go in a different file)
|
||
|
||
STATIC mp_obj_t static_class_method_make_new(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
||
assert(self_in == &mp_type_staticmethod || self_in == &mp_type_classmethod);
|
||
|
||
mp_arg_check_num(n_args, n_kw, 1, 1, false);
|
||
|
||
mp_obj_static_class_method_t *o = m_new_obj(mp_obj_static_class_method_t);
|
||
*o = (mp_obj_static_class_method_t){{(mp_obj_type_t*)self_in}, args[0]};
|
||
return o;
|
||
}
|
||
|
||
const mp_obj_type_t mp_type_staticmethod = {
|
||
{ &mp_type_type },
|
||
.name = MP_QSTR_staticmethod,
|
||
.make_new = static_class_method_make_new,
|
||
};
|
||
|
||
const mp_obj_type_t mp_type_classmethod = {
|
||
{ &mp_type_type },
|
||
.name = MP_QSTR_classmethod,
|
||
.make_new = static_class_method_make_new,
|
||
};
|