533 lines
19 KiB
C
533 lines
19 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 <string.h>
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#include <assert.h>
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#include "py/nlr.h"
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#include "py/objlist.h"
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#include "py/runtime0.h"
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#include "py/runtime.h"
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#include "py/stackctrl.h"
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STATIC mp_obj_t mp_obj_new_list_iterator(mp_obj_list_t *list, mp_uint_t cur);
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STATIC mp_obj_list_t *list_new(mp_uint_t n);
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STATIC mp_obj_t list_extend(mp_obj_t self_in, mp_obj_t arg_in);
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STATIC mp_obj_t list_pop(mp_uint_t n_args, const mp_obj_t *args);
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// TODO: Move to mpconfig.h
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#define LIST_MIN_ALLOC 4
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/******************************************************************************/
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/* list */
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STATIC void list_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_list_t *o = o_in;
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if (!(MICROPY_PY_UJSON && kind == PRINT_JSON)) {
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kind = PRINT_REPR;
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}
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print(env, "[");
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for (mp_uint_t i = 0; i < o->len; i++) {
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if (i > 0) {
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print(env, ", ");
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}
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mp_obj_print_helper(print, env, o->items[i], kind);
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}
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print(env, "]");
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}
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STATIC mp_obj_t list_extend_from_iter(mp_obj_t list, mp_obj_t iterable) {
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mp_obj_t iter = mp_getiter(iterable);
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mp_obj_t item;
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while ((item = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
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mp_obj_list_append(list, item);
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}
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return list;
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}
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STATIC mp_obj_t list_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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(void)type_in;
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mp_arg_check_num(n_args, n_kw, 0, 1, false);
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switch (n_args) {
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case 0:
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// return a new, empty list
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return mp_obj_new_list(0, NULL);
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case 1:
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default: {
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// make list from iterable
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// TODO: optimize list/tuple
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mp_obj_t list = mp_obj_new_list(0, NULL);
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return list_extend_from_iter(list, args[0]);
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}
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}
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}
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// Don't pass MP_BINARY_OP_NOT_EQUAL here
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STATIC bool list_cmp_helper(mp_uint_t op, mp_obj_t self_in, mp_obj_t another_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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if (!MP_OBJ_IS_TYPE(another_in, &mp_type_list)) {
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return false;
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}
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mp_obj_list_t *self = self_in;
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mp_obj_list_t *another = another_in;
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return mp_seq_cmp_objs(op, self->items, self->len, another->items, another->len);
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}
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STATIC mp_obj_t list_unary_op(mp_uint_t op, mp_obj_t self_in) {
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mp_obj_list_t *self = self_in;
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switch (op) {
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case MP_UNARY_OP_BOOL: return MP_BOOL(self->len != 0);
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case MP_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(self->len);
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default: return MP_OBJ_NULL; // op not supported
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}
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}
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STATIC mp_obj_t list_binary_op(mp_uint_t op, mp_obj_t lhs, mp_obj_t rhs) {
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mp_obj_list_t *o = lhs;
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switch (op) {
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case MP_BINARY_OP_ADD: {
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if (!MP_OBJ_IS_TYPE(rhs, &mp_type_list)) {
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return MP_OBJ_NULL; // op not supported
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}
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mp_obj_list_t *p = rhs;
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mp_obj_list_t *s = list_new(o->len + p->len);
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mp_seq_cat(s->items, o->items, o->len, p->items, p->len, mp_obj_t);
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return s;
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}
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case MP_BINARY_OP_INPLACE_ADD: {
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if (!MP_OBJ_IS_TYPE(rhs, &mp_type_list)) {
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return MP_OBJ_NULL; // op not supported
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}
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list_extend(lhs, rhs);
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return o;
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}
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case MP_BINARY_OP_MULTIPLY: {
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mp_int_t n;
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if (!mp_obj_get_int_maybe(rhs, &n)) {
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return MP_OBJ_NULL; // op not supported
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}
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if (n < 0) {
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n = 0;
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}
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mp_obj_list_t *s = list_new(o->len * n);
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mp_seq_multiply(o->items, sizeof(*o->items), o->len, n, s->items);
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return s;
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}
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case MP_BINARY_OP_EQUAL:
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case MP_BINARY_OP_LESS:
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case MP_BINARY_OP_LESS_EQUAL:
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case MP_BINARY_OP_MORE:
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case MP_BINARY_OP_MORE_EQUAL:
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return MP_BOOL(list_cmp_helper(op, lhs, rhs));
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default:
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return MP_OBJ_NULL; // op not supported
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}
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}
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STATIC mp_obj_t list_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
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if (value == MP_OBJ_NULL) {
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// delete
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#if MICROPY_PY_BUILTINS_SLICE
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if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
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mp_obj_list_t *self = self_in;
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mp_bound_slice_t slice;
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if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice)) {
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assert(0);
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}
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mp_int_t len_adj = slice.start - slice.stop;
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//printf("Len adj: %d\n", len_adj);
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assert(len_adj <= 0);
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mp_seq_replace_slice_no_grow(self->items, self->len, slice.start, slice.stop, self->items/*NULL*/, 0, sizeof(*self->items));
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// Clear "freed" elements at the end of list
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mp_seq_clear(self->items, self->len + len_adj, self->len, sizeof(*self->items));
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self->len += len_adj;
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return mp_const_none;
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}
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#endif
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mp_obj_t args[2] = {self_in, index};
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list_pop(2, args);
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return mp_const_none;
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} else if (value == MP_OBJ_SENTINEL) {
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// load
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mp_obj_list_t *self = self_in;
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#if MICROPY_PY_BUILTINS_SLICE
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if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
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mp_bound_slice_t slice;
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if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice)) {
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return mp_seq_extract_slice(self->len, self->items, &slice);
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}
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mp_obj_list_t *res = list_new(slice.stop - slice.start);
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mp_seq_copy(res->items, self->items + slice.start, res->len, mp_obj_t);
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return res;
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}
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#endif
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mp_uint_t index_val = mp_get_index(self->base.type, self->len, index, false);
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return self->items[index_val];
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} else {
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#if MICROPY_PY_BUILTINS_SLICE
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if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
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mp_obj_list_t *self = self_in;
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assert(MP_OBJ_IS_TYPE(value, &mp_type_list));
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mp_obj_list_t *slice = value;
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mp_bound_slice_t slice_out;
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if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice_out)) {
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assert(0);
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}
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mp_int_t len_adj = slice->len - (slice_out.stop - slice_out.start);
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//printf("Len adj: %d\n", len_adj);
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if (len_adj > 0) {
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if (self->len + len_adj > self->alloc) {
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// TODO: Might optimize memory copies here by checking if block can
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// be grown inplace or not
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self->items = m_renew(mp_obj_t, self->items, self->alloc, self->len + len_adj);
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self->alloc = self->len + len_adj;
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}
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mp_seq_replace_slice_grow_inplace(self->items, self->len,
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slice_out.start, slice_out.stop, slice->items, slice->len, len_adj, sizeof(*self->items));
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} else {
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mp_seq_replace_slice_no_grow(self->items, self->len,
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slice_out.start, slice_out.stop, slice->items, slice->len, sizeof(*self->items));
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// Clear "freed" elements at the end of list
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mp_seq_clear(self->items, self->len + len_adj, self->len, sizeof(*self->items));
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// TODO: apply allocation policy re: alloc_size
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}
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self->len += len_adj;
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return mp_const_none;
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}
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#endif
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mp_obj_list_store(self_in, index, value);
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return mp_const_none;
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}
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}
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STATIC mp_obj_t list_getiter(mp_obj_t o_in) {
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return mp_obj_new_list_iterator(o_in, 0);
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}
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mp_obj_t mp_obj_list_append(mp_obj_t self_in, mp_obj_t arg) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_list_t *self = self_in;
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if (self->len >= self->alloc) {
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self->items = m_renew(mp_obj_t, self->items, self->alloc, self->alloc * 2);
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self->alloc *= 2;
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mp_seq_clear(self->items, self->len + 1, self->alloc, sizeof(*self->items));
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}
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self->items[self->len++] = arg;
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return mp_const_none; // return None, as per CPython
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}
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STATIC mp_obj_t list_extend(mp_obj_t self_in, mp_obj_t arg_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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if (MP_OBJ_IS_TYPE(arg_in, &mp_type_list)) {
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mp_obj_list_t *self = self_in;
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mp_obj_list_t *arg = arg_in;
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if (self->len + arg->len > self->alloc) {
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// TODO: use alloc policy for "4"
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self->items = m_renew(mp_obj_t, self->items, self->alloc, self->len + arg->len + 4);
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self->alloc = self->len + arg->len + 4;
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mp_seq_clear(self->items, self->len + arg->len, self->alloc, sizeof(*self->items));
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}
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memcpy(self->items + self->len, arg->items, sizeof(mp_obj_t) * arg->len);
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self->len += arg->len;
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} else {
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list_extend_from_iter(self_in, arg_in);
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}
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return mp_const_none; // return None, as per CPython
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}
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STATIC mp_obj_t list_pop(mp_uint_t n_args, const mp_obj_t *args) {
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assert(1 <= n_args && n_args <= 2);
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assert(MP_OBJ_IS_TYPE(args[0], &mp_type_list));
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mp_obj_list_t *self = args[0];
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if (self->len == 0) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_IndexError, "pop from empty list"));
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}
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mp_uint_t index = mp_get_index(self->base.type, self->len, n_args == 1 ? MP_OBJ_NEW_SMALL_INT(-1) : args[1], false);
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mp_obj_t ret = self->items[index];
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self->len -= 1;
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memmove(self->items + index, self->items + index + 1, (self->len - index) * sizeof(mp_obj_t));
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// Clear stale pointer from slot which just got freed to prevent GC issues
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self->items[self->len] = MP_OBJ_NULL;
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if (self->alloc > LIST_MIN_ALLOC && self->alloc > 2 * self->len) {
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self->items = m_renew(mp_obj_t, self->items, self->alloc, self->alloc/2);
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self->alloc /= 2;
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}
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return ret;
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}
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STATIC void mp_quicksort(mp_obj_t *head, mp_obj_t *tail, mp_obj_t key_fn, mp_obj_t binop_less_result) {
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MP_STACK_CHECK();
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while (head < tail) {
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mp_obj_t *h = head - 1;
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mp_obj_t *t = tail;
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mp_obj_t v = key_fn == MP_OBJ_NULL ? tail[0] : mp_call_function_1(key_fn, tail[0]); // get pivot using key_fn
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for (;;) {
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do ++h; while (h < t && mp_binary_op(MP_BINARY_OP_LESS, key_fn == MP_OBJ_NULL ? h[0] : mp_call_function_1(key_fn, h[0]), v) == binop_less_result);
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do --t; while (h < t && mp_binary_op(MP_BINARY_OP_LESS, v, key_fn == MP_OBJ_NULL ? t[0] : mp_call_function_1(key_fn, t[0])) == binop_less_result);
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if (h >= t) break;
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mp_obj_t x = h[0];
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h[0] = t[0];
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t[0] = x;
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}
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mp_obj_t x = h[0];
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h[0] = tail[0];
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tail[0] = x;
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// do the smaller recursive call first, to keep stack within O(log(N))
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if (t - head < tail - h - 1) {
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mp_quicksort(head, t, key_fn, binop_less_result);
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head = h + 1;
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} else {
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mp_quicksort(h + 1, tail, key_fn, binop_less_result);
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tail = t;
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}
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}
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}
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// TODO Python defines sort to be stable but ours is not
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mp_obj_t mp_obj_list_sort(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_key, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_reverse, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
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};
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// parse args
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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mp_obj_list_t *self = pos_args[0];
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assert(MP_OBJ_IS_TYPE(self, &mp_type_list));
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if (self->len > 1) {
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mp_quicksort(self->items, self->items + self->len - 1,
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args[0].u_obj == mp_const_none ? MP_OBJ_NULL : args[0].u_obj,
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args[1].u_bool ? mp_const_false : mp_const_true);
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}
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return mp_const_none;
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}
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STATIC mp_obj_t list_clear(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_list_t *self = self_in;
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self->len = 0;
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self->items = m_renew(mp_obj_t, self->items, self->alloc, LIST_MIN_ALLOC);
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self->alloc = LIST_MIN_ALLOC;
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mp_seq_clear(self->items, 0, self->alloc, sizeof(*self->items));
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return mp_const_none;
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}
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STATIC mp_obj_t list_copy(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_list_t *self = self_in;
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return mp_obj_new_list(self->len, self->items);
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}
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STATIC mp_obj_t list_count(mp_obj_t self_in, mp_obj_t value) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_list_t *self = self_in;
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return mp_seq_count_obj(self->items, self->len, value);
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}
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STATIC mp_obj_t list_index(mp_uint_t n_args, const mp_obj_t *args) {
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assert(2 <= n_args && n_args <= 4);
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assert(MP_OBJ_IS_TYPE(args[0], &mp_type_list));
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mp_obj_list_t *self = args[0];
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return mp_seq_index_obj(self->items, self->len, n_args, args);
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}
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STATIC mp_obj_t list_insert(mp_obj_t self_in, mp_obj_t idx, mp_obj_t obj) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_list_t *self = self_in;
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// insert has its own strange index logic
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mp_int_t index = MP_OBJ_SMALL_INT_VALUE(idx);
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if (index < 0) {
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index += self->len;
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}
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if (index < 0) {
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index = 0;
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}
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if ((mp_uint_t)index > self->len) {
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index = self->len;
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}
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mp_obj_list_append(self_in, mp_const_none);
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for (mp_int_t i = self->len-1; i > index; i--) {
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self->items[i] = self->items[i-1];
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}
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self->items[index] = obj;
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return mp_const_none;
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}
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mp_obj_t mp_obj_list_remove(mp_obj_t self_in, mp_obj_t value) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_t args[] = {self_in, value};
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args[1] = list_index(2, args);
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list_pop(2, args);
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return mp_const_none;
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}
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STATIC mp_obj_t list_reverse(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_list));
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mp_obj_list_t *self = self_in;
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mp_int_t len = self->len;
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for (mp_int_t i = 0; i < len/2; i++) {
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mp_obj_t a = self->items[i];
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self->items[i] = self->items[len-i-1];
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self->items[len-i-1] = a;
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(list_append_obj, mp_obj_list_append);
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(list_extend_obj, list_extend);
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(list_clear_obj, list_clear);
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(list_copy_obj, list_copy);
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(list_count_obj, list_count);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(list_index_obj, 2, 4, list_index);
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(list_insert_obj, list_insert);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(list_pop_obj, 1, 2, list_pop);
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(list_remove_obj, mp_obj_list_remove);
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(list_reverse_obj, list_reverse);
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(list_sort_obj, 1, mp_obj_list_sort);
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STATIC const mp_map_elem_t list_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_append), (mp_obj_t)&list_append_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_clear), (mp_obj_t)&list_clear_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_copy), (mp_obj_t)&list_copy_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_count), (mp_obj_t)&list_count_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_extend), (mp_obj_t)&list_extend_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_index), (mp_obj_t)&list_index_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_insert), (mp_obj_t)&list_insert_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_pop), (mp_obj_t)&list_pop_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_remove), (mp_obj_t)&list_remove_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_reverse), (mp_obj_t)&list_reverse_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sort), (mp_obj_t)&list_sort_obj },
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};
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STATIC MP_DEFINE_CONST_DICT(list_locals_dict, list_locals_dict_table);
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const mp_obj_type_t mp_type_list = {
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{ &mp_type_type },
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.name = MP_QSTR_list,
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.print = list_print,
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.make_new = list_make_new,
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.unary_op = list_unary_op,
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.binary_op = list_binary_op,
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.subscr = list_subscr,
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.getiter = list_getiter,
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.locals_dict = (mp_obj_t)&list_locals_dict,
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};
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void mp_obj_list_init(mp_obj_list_t *o, mp_uint_t n) {
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o->base.type = &mp_type_list;
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o->alloc = n < LIST_MIN_ALLOC ? LIST_MIN_ALLOC : n;
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o->len = n;
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o->items = m_new(mp_obj_t, o->alloc);
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mp_seq_clear(o->items, n, o->alloc, sizeof(*o->items));
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}
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STATIC mp_obj_list_t *list_new(mp_uint_t n) {
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mp_obj_list_t *o = m_new_obj(mp_obj_list_t);
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mp_obj_list_init(o, n);
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return o;
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}
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mp_obj_t mp_obj_new_list(mp_uint_t n, mp_obj_t *items) {
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mp_obj_list_t *o = list_new(n);
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if (items != NULL) {
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for (mp_uint_t i = 0; i < n; i++) {
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o->items[i] = items[i];
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}
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}
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return o;
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}
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void mp_obj_list_get(mp_obj_t self_in, mp_uint_t *len, mp_obj_t **items) {
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mp_obj_list_t *self = self_in;
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*len = self->len;
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*items = self->items;
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}
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void mp_obj_list_set_len(mp_obj_t self_in, mp_uint_t len) {
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// trust that the caller knows what it's doing
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// TODO realloc if len got much smaller than alloc
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mp_obj_list_t *self = self_in;
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self->len = len;
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}
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void mp_obj_list_store(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
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mp_obj_list_t *self = self_in;
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mp_uint_t i = mp_get_index(self->base.type, self->len, index, false);
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self->items[i] = value;
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}
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/******************************************************************************/
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/* list iterator */
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typedef struct _mp_obj_list_it_t {
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mp_obj_base_t base;
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mp_obj_list_t *list;
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mp_uint_t cur;
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} mp_obj_list_it_t;
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STATIC mp_obj_t list_it_iternext(mp_obj_t self_in) {
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mp_obj_list_it_t *self = self_in;
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if (self->cur < self->list->len) {
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mp_obj_t o_out = self->list->items[self->cur];
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self->cur += 1;
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return o_out;
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} else {
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return MP_OBJ_STOP_ITERATION;
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}
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}
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STATIC const mp_obj_type_t mp_type_list_it = {
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{ &mp_type_type },
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.name = MP_QSTR_iterator,
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.getiter = mp_identity,
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.iternext = list_it_iternext,
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};
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mp_obj_t mp_obj_new_list_iterator(mp_obj_list_t *list, mp_uint_t cur) {
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mp_obj_list_it_t *o = m_new_obj(mp_obj_list_it_t);
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o->base.type = &mp_type_list_it;
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o->list = list;
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o->cur = cur;
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return o;
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}
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