function command

public int execute(CommandFunction commandFunction, CommandSourceStack commandSourceStack) {
    int n = this.getCommandLimit();
    if (this.isInFunction) {
        if (this.commandQueue.size() + this.nestedCalls.size() < n) {
            this.nestedCalls.add(new QueuedCommand(this, commandSourceStack, new CommandFunction.FunctionEntry(commandFunction)));
        }
        return 0;
    }
    try {
        int n2;
        this.isInFunction = true;
        int n3 = 0;
        CommandFunction.Entry[] arrentry = commandFunction.getEntries();
        for (n2 = arrentry.length - 1; n2 >= 0; --n2) {
            this.commandQueue.push(new QueuedCommand(this, commandSourceStack, arrentry[n2]));
        }
        while (!this.commandQueue.isEmpty()) {
            try {
                QueuedCommand queuedCommand = this.commandQueue.removeFirst();
                this.server.getProfiler().push(queuedCommand::toString);
                queuedCommand.execute(this.commandQueue, n);
                if (!this.nestedCalls.isEmpty()) {
                    Lists.reverse(this.nestedCalls).forEach(this.commandQueue::addFirst);
                    this.nestedCalls.clear();
                }
            }
            finally {
                this.server.getProfiler().pop();
            }
            if (++n3 < n) continue;
            int n4 = n3;
            return n4;
        }
        n2 = n3;
        return n2;
    }
    finally {
        this.commandQueue.clear();
        this.nestedCalls.clear();
        this.isInFunction = false;
    }
}