void test_matrix_rep()
{
Rep matrix;
matrix.set(1, 1, 1);
matrix.reserve(3, 3);
matrix.set(3, 2, 3);
assert(matrix.get(3, 2) == 3);
assert(matrix.get(4, 3) == 0);
assert(matrix.is_null(4,3));
assert(!matrix.is_null(3,2));
matrix.set(4, 2, 2);
matrix.reserve(4, 4);
assert(matrix.get(3, 2) == 3);
assert(matrix.get(4, 2) == 2);
assert(!matrix.is_null(4, 2));
assert(matrix.is_null(10, 10));
}
wstring& wstring::replace(size_t pos, size_t n1, size_t n2, wchar_t c) {
const size_t len = length();
if (pos > len)
throw out_of_range("pos > len");
if (n1 > len - pos)
n1 = len - pos;
if (len - n1 > max_size() - n2)
throw length_error("len - n1 > max_size() - n2");
size_t newlen = len - n1 + n2;
if (check_realloc(newlen)) {
Rep *p = Rep::create(newlen);
p->copy(0, data(), pos);
p->copy(pos + n2, data() + pos + n1, len -(pos + n1));
p->set (pos, c, n2);
repup(p);
}
else {
rep()->move(pos + n2, data() + pos + n1, len -(pos + n1));
rep()->set (pos, c, n2);
}
rep()->len = newlen;
return *this;
}