void add_anchor_point(const pointi& p)
// Add point to our list of anchors. Keep the list sorted.
{
// Add it to end, since we expect new points to be
// relatively greater than existing points.
s_anchor_points.push_back(p);
// Insertion sort -- bubble down into correct spot.
for (int i = s_anchor_points.size() - 2; i >= 0; i--)
{
if (s_anchor_points[i + 1] < s_anchor_points[i])
{
tu_swap(&(s_anchor_points[i]), &(s_anchor_points[i + 1]));
}
else
{
// Done bubbling down.
break;
}
}
}
void string_substring(const fn_call& fn)
{
const tu_string& this_str = fn.this_value.to_tu_string();
// Pull a slice out of this_string.
int start = 0;
int utf8_len = this_str.utf8_length();
int end = utf8_len;
if (fn.nargs >= 1)
{
start = fn.arg(0).to_int();
start = iclamp(start, 0, utf8_len);
}
if (fn.nargs >= 2)
{
end = fn.arg(1).to_int();
end = iclamp(end, 0, utf8_len);
}
if (end < start) tu_swap(&start, &end); // dumb, but that's what the docs say
assert(end >= start);
fn.result->set_tu_string(this_str.utf8_substring(start, end));
}
