int
PyNode_AddChild(register node *n1, int type, char *str, int lineno, int col_offset)
{
const int nch = n1->n_nchildren;
int current_capacity;
int required_capacity;
node *n;
if (nch == INT_MAX || nch < 0)
return E_OVERFLOW;
current_capacity = XXXROUNDUP(nch);
required_capacity = XXXROUNDUP(nch + 1);
if (current_capacity < 0 || required_capacity < 0)
return E_OVERFLOW;
if (current_capacity < required_capacity) {
n = n1->n_child;
n = (node *) PyObject_REALLOC(n,
required_capacity * sizeof(node));
if (n == NULL)
return E_NOMEM;
n1->n_child = n;
}
n = &n1->n_child[n1->n_nchildren++];
n->n_type = type;
n->n_str = str;
n->n_lineno = lineno;
n->n_col_offset = col_offset;
n->n_nchildren = 0;
n->n_child = NULL;
return 0;
}
static Py_ssize_t
sizeofchildren(node *n)
{
Py_ssize_t res = 0;
int i;
for (i = NCH(n); --i >= 0; )
res += sizeofchildren(CHILD(n, i));
if (n->n_child != NULL)
/* allocated size of n->n_child array */
res += XXXROUNDUP(NCH(n)) * sizeof(node);
if (STR(n) != NULL)
res += strlen(STR(n)) + 1;
return res;
}
