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条件判断还存在问题

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建峰 2025-04-30 11:45:22 +08:00
parent e86657d807
commit ce9acda014
1 changed files with 182 additions and 90 deletions
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92
src/list.c
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@ -368,6 +368,9 @@ done:
{
empty = true;
}
if (empty != true)
{
if (start < 0)
{
if (start < -self->size(self))
@ -420,7 +423,96 @@ done:
}
else
{
list = list_new2(self->_obj_size, capacity);
if (list == NULL)
{
return NULL;
}
list->compare = self->compare;
list->print_obj = self->print_obj;
}
}
else
{
// special case
if (start == LIST_UNLIMITED)
{
start = self->size(self) - 1;
}
if (end == LIST_UNLIMITED)
{
end = 0;
contain_last_obj = true;
}
// [start_min, end_max] start > end and limit start_min and end_max
if (start <= end || end >= self->size(self) || start < -self->size(self))
{
empty = true;
}
if (empty != true)
{
if (start < 0)
{
if (start < -self->size(self))
{
start = -self->size(self);
}
start += self->size(self);
}
else
{
if (start > self->size(self))
{
start = self->size(self) - 1;
contain_last_obj = true;
}
}
if (end < 0)
{
end += self->size(self);
}
if (empty != true)
{
// calc capacity
capacity = end - start;
}
list = list_new2(self->_obj_size, capacity);
if (list == NULL)
{
return NULL;
}
list->compare = self->compare;
list->print_obj = self->print_obj;
if (contain_last_obj != true)
{
for (i = start; i > end; i += step)
{
list->append(list, (char*)self->obj + i * self->_obj_size);
}
}
else
{
for (i = start; i >= end; i += step)
{
list->append(list, (char*)self->obj + i * self->_obj_size);
}
}
}
else
{
list = list_new2(self->_obj_size, capacity);
if (list == NULL)
{
return NULL;
}
list->compare = self->compare;
list->print_obj = self->print_obj;
}
}
return list;