Method append

3rdparty/pugixml/pugixml.cpp:9138–9160

		}

		void append(const xpath_node* begin_, const xpath_node* end_, xpath_allocator* alloc)
		{
			if (begin_ == end_) return;

			size_t size_ = static_cast<size_t>(_end - _begin);
			size_t capacity = static_cast<size_t>(_eos - _begin);
			size_t count = static_cast<size_t>(end_ - begin_);

			if (size_ + count > capacity)
			{
				// reallocate the old array or allocate a new one
				xpath_node* data = static_cast<xpath_node*>(alloc->reallocate(_begin, capacity * sizeof(xpath_node), (size_ + count) * sizeof(xpath_node)));
				if (!data) return;

				// finalize
				_begin = data;
				_end = data + size_;
				_eos = data + size_ + count;
			}

			memcpy(_end, begin_, count * sizeof(xpath_node));
			_end += count;
		}

		void sort_do()
		{