244 lines
7.2 KiB
C
244 lines
7.2 KiB
C
#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <assert.h>
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#include "nlr.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "obj.h"
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#include "runtime0.h"
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#include "runtime.h"
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typedef struct _mp_obj_list_t {
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mp_obj_base_t base;
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machine_uint_t alloc;
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machine_uint_t len;
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mp_obj_t *items;
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} mp_obj_list_t;
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static mp_obj_t mp_obj_new_list_iterator(mp_obj_list_t *list, int cur);
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static mp_obj_list_t *list_new(uint n);
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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) {
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mp_obj_list_t *o = o_in;
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print(env, "[");
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for (int 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]);
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}
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print(env, "]");
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}
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static mp_obj_t list_binary_op(int 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 RT_BINARY_OP_SUBSCR:
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{
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// list load
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uint index = mp_get_index(o->base.type, o->len, rhs);
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return o->items[index];
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}
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case RT_BINARY_OP_ADD:
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{
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if (!MP_OBJ_IS_TYPE(rhs, &list_type)) {
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return NULL;
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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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memcpy(s->items, o->items, sizeof(mp_obj_t) * o->len);
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memcpy(s->items + o->len, p->items, sizeof(mp_obj_t) * p->len);
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return s;
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}
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default:
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// op not supported
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return NULL;
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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, &list_type));
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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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}
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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_pop(int 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], &list_type));
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mp_obj_list_t *self = args[0];
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if (self->len == 0) {
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nlr_jump(mp_obj_new_exception_msg(rt_q_IndexError, "pop from empty list"));
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}
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uint index = mp_get_index(self->base.type, self->len, n_args == 1 ? mp_obj_new_int(-1) : args[1]);
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mp_obj_t ret = self->items[index];
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self->len -= 1;
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memcpy(self->items + index, self->items + index + 1, (self->len - index) * sizeof(mp_obj_t));
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if (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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// TODO make this conform to CPython's definition of sort
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static void mp_quicksort(mp_obj_t *head, mp_obj_t *tail, mp_obj_t key_fn) {
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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 = rt_call_function_1(key_fn, tail[0]); // get pivot using key_fn
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for (;;) {
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do ++h; while (rt_compare_op(RT_COMPARE_OP_LESS, rt_call_function_1(key_fn, h[0]), v) == mp_const_true);
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do --t; while (h < t && rt_compare_op(RT_COMPARE_OP_LESS, v, rt_call_function_1(key_fn, t[0])) == mp_const_true);
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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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mp_quicksort(head, t, key_fn);
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head = h + 1;
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}
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}
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static mp_obj_t list_sort(mp_obj_t self_in, mp_obj_t key_fn) {
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assert(MP_OBJ_IS_TYPE(self_in, &list_type));
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mp_obj_list_t *self = self_in;
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if (self->len > 1) {
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mp_quicksort(self->items, self->items + self->len - 1, key_fn);
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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_clear(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &list_type));
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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, 4);
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self->alloc = 4;
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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, &list_type));
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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_DEFINE_CONST_FUN_OBJ_2(list_append_obj, mp_obj_list_append);
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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_VAR_BETWEEN(list_pop_obj, 1, 2, list_pop);
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static MP_DEFINE_CONST_FUN_OBJ_2(list_sort_obj, list_sort);
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const mp_obj_type_t list_type = {
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{ &mp_const_type },
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"list",
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list_print, // print
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NULL, // call_n
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NULL, // unary_op
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list_binary_op, // binary_op
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list_getiter, // getiter
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NULL, // iternext
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{ // method list
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{ "append", &list_append_obj },
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{ "clear", &list_clear_obj },
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{ "copy", &list_copy_obj },
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{ "pop", &list_pop_obj },
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{ "sort", &list_sort_obj },
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{ NULL, NULL }, // end-of-list sentinel
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},
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};
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static mp_obj_list_t *list_new(uint n) {
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mp_obj_list_t *o = m_new_obj(mp_obj_list_t);
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o->base.type = &list_type;
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o->alloc = n < 4 ? 4 : 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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return o;
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}
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mp_obj_t mp_obj_new_list(uint n, mp_obj_t *items) {
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mp_obj_list_t *o = list_new(n);
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for (int i = 0; i < n; i++) {
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o->items[i] = items[i];
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}
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return o;
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}
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mp_obj_t mp_obj_new_list_reverse(uint n, mp_obj_t *items) {
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mp_obj_list_t *o = list_new(n);
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for (int i = 0; i < n; i++) {
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o->items[i] = items[n - i - 1];
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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, uint *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_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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uint i = mp_get_index(self->base.type, self->len, index);
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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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machine_uint_t cur;
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} mp_obj_list_it_t;
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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_const_stop_iteration;
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}
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}
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static const mp_obj_type_t list_it_type = {
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{ &mp_const_type },
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"list_iterator",
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NULL, // print
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NULL, // call_n
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NULL, // unary_op
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NULL, // binary_op
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NULL, // getiter
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list_it_iternext, // iternext
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{ { NULL, NULL }, }, // method list
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};
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mp_obj_t mp_obj_new_list_iterator(mp_obj_list_t *list, int 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 = &list_it_type;
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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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