Method apply_predicate

Tools/EditorFramework/pugixml.cpp:8323–8347

	}

	void apply_predicate(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack)
	{
		assert(ns.size() >= first);

		size_t i = 1;
		size_t size = ns.size() - first;

		xpath_node* last = ns.begin() + first;

		// remove_if... or well, sort of
		for (xpath_node* it = last; it != ns.end(); ++it, ++i)
		{
			xpath_context c(*it, i, size);

			if (expr->rettype() == xpath_type_number)
			{
				if (expr->eval_number(c, stack) == i)
					*last++ = *it;
			}
			else if (expr->eval_boolean(c, stack))
				*last++ = *it;
		}

		ns.truncate(last);
	}

	void apply_predicates(xpath_node_set_raw& ns, size_t first, const xpath_stack& stack)
	{