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Copy pathobjlist.c
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204 lines (181 loc) · 5.76 KB
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#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "obj.h"
#include "runtime0.h"
#include "runtime.h"
typedef struct _mp_obj_list_t {
mp_obj_base_t base;
machine_uint_t alloc;
machine_uint_t len;
mp_obj_t *items;
} mp_obj_list_t;
static mp_obj_t mp_obj_new_list_iterator(mp_obj_list_t *list, int cur);
/******************************************************************************/
/* list */
static void list_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in) {
mp_obj_list_t *o = o_in;
print(env, "[");
for (int i = 0; i < o->len; i++) {
if (i > 0) {
print(env, ", ");
}
mp_obj_print_helper(print, env, o->items[i]);
}
print(env, "]");
}
static mp_obj_t list_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
mp_obj_list_t *o = lhs;
switch (op) {
case RT_BINARY_OP_SUBSCR:
{
// list load
uint index = mp_get_index(o->base.type, o->len, rhs);
return o->items[index];
}
default:
// op not supported
return NULL;
}
}
static mp_obj_t list_getiter(mp_obj_t o_in) {
return mp_obj_new_list_iterator(o_in, 0);
}
mp_obj_t mp_obj_list_append(mp_obj_t self_in, mp_obj_t arg) {
assert(MP_OBJ_IS_TYPE(self_in, &list_type));
mp_obj_list_t *self = self_in;
if (self->len >= self->alloc) {
self->alloc *= 2;
self->items = m_renew(mp_obj_t, self->items, self->alloc);
}
self->items[self->len++] = arg;
return mp_const_none; // return None, as per CPython
}
static mp_obj_t list_pop(mp_obj_t self_in, mp_obj_t arg) {
assert(MP_OBJ_IS_TYPE(self_in, &list_type));
mp_obj_list_t *self = self_in;
uint index = mp_get_index(self->base.type, self->len, arg);
mp_obj_t ret = self->items[index];
self->len -= 1;
memcpy(self->items + index, self->items + index + 1, (self->len - index) * sizeof(mp_obj_t));
return ret;
}
// TODO make this conform to CPython's definition of sort
static void mp_quicksort(mp_obj_t *head, mp_obj_t *tail, mp_obj_t key_fn) {
while (head < tail) {
mp_obj_t *h = head - 1;
mp_obj_t *t = tail;
mp_obj_t v = rt_call_function_1(key_fn, tail[0]); // get pivot using key_fn
for (;;) {
do ++h; while (rt_compare_op(RT_COMPARE_OP_LESS, rt_call_function_1(key_fn, h[0]), v) == mp_const_true);
do --t; while (h < t && rt_compare_op(RT_COMPARE_OP_LESS, v, rt_call_function_1(key_fn, t[0])) == mp_const_true);
if (h >= t) break;
mp_obj_t x = h[0];
h[0] = t[0];
t[0] = x;
}
mp_obj_t x = h[0];
h[0] = tail[0];
tail[0] = x;
mp_quicksort(head, t, key_fn);
head = h + 1;
}
}
static mp_obj_t list_sort(mp_obj_t self_in, mp_obj_t key_fn) {
assert(MP_OBJ_IS_TYPE(self_in, &list_type));
mp_obj_list_t *self = self_in;
if (self->len > 1) {
mp_quicksort(self->items, self->items + self->len - 1, key_fn);
}
return mp_const_none; // return None, as per CPython
}
static MP_DEFINE_CONST_FUN_OBJ_2(list_append_obj, mp_obj_list_append);
static MP_DEFINE_CONST_FUN_OBJ_2(list_pop_obj, list_pop);
static MP_DEFINE_CONST_FUN_OBJ_2(list_sort_obj, list_sort);
const mp_obj_type_t list_type = {
{ &mp_const_type },
"list",
list_print, // print
NULL, // call_n
NULL, // unary_op
list_binary_op, // binary_op
list_getiter, // getiter
NULL, // iternext
{ // method list
{ "append", &list_append_obj },
{ "pop", &list_pop_obj },
{ "sort", &list_sort_obj },
{ NULL, NULL }, // end-of-list sentinel
},
};
static mp_obj_list_t *list_new(uint n) {
mp_obj_list_t *o = m_new_obj(mp_obj_list_t);
o->base.type = &list_type;
o->alloc = n < 4 ? 4 : n;
o->len = n;
o->items = m_new(mp_obj_t, o->alloc);
return o;
}
mp_obj_t mp_obj_new_list(uint n, mp_obj_t *items) {
mp_obj_list_t *o = list_new(n);
for (int i = 0; i < n; i++) {
o->items[i] = items[i];
}
return o;
}
mp_obj_t mp_obj_new_list_reverse(uint n, mp_obj_t *items) {
mp_obj_list_t *o = list_new(n);
for (int i = 0; i < n; i++) {
o->items[i] = items[n - i - 1];
}
return o;
}
void mp_obj_list_get(mp_obj_t self_in, uint *len, mp_obj_t **items) {
mp_obj_list_t *self = self_in;
*len = self->len;
*items = self->items;
}
void mp_obj_list_store(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
mp_obj_list_t *self = self_in;
uint i = mp_get_index(self->base.type, self->len, index);
self->items[i] = value;
}
/******************************************************************************/
/* list iterator */
typedef struct _mp_obj_list_it_t {
mp_obj_base_t base;
mp_obj_list_t *list;
machine_uint_t cur;
} mp_obj_list_it_t;
mp_obj_t list_it_iternext(mp_obj_t self_in) {
mp_obj_list_it_t *self = self_in;
if (self->cur < self->list->len) {
mp_obj_t o_out = self->list->items[self->cur];
self->cur += 1;
return o_out;
} else {
return mp_const_stop_iteration;
}
}
static const mp_obj_type_t list_it_type = {
{ &mp_const_type },
"list_iterator",
NULL, // print
NULL, // call_n
NULL, // unary_op
NULL, // binary_op
NULL, // getiter
list_it_iternext, // iternext
{ { NULL, NULL }, }, // method list
};
mp_obj_t mp_obj_new_list_iterator(mp_obj_list_t *list, int cur) {
mp_obj_list_it_t *o = m_new_obj(mp_obj_list_it_t);
o->base.type = &list_it_type;
o->list = list;
o->cur = cur;
return o;
}