public void functionToJVM(PrintWriter file, SymbolTable st, Node n)
  {
    //functionTable.setRegisters(function.name);

    SimpleNode function = (SimpleNode) n;
    SimpleNode args[] = null;
    SymbolTable function_table = null;
    String function_header;

    int children = function.jjtGetNumChildren();

    String name = function.getName()

    Symbol symbol = null;
    String return_symbol;

    //header
    for(int i = 0; i < children; i++)
    {
        if(function.jjtGetChild(i).toString().equals("Arg"))
        {
            args[i] = function.jjGetChild(i);
        }
    }

    file.print('\n' + ".method public static ");

    if(name.equals("Main"))
    {
        file.print("main([Ljava/lang/String;)V" + '\n');
    }
    else
    {
        function_table = this.st.get(name);

        function_header = name + '(';

        for (Map.Entry<String, Symbol> entry : function_table.getArgsList().entrySet()) {

            symbol = entry.getValue();

            if(symbol.getType().equals("int"))
            {
                function_header += "I";
            }
            else if(symbol.getType().equals("array"))
            {
                function_header += "[I";
            }
        }

        return_symbol = function_table.getReturnType();
        if(return_symbol == "void")
        {
            function_header += ")V";
        }
        else
        {
            if(return_symbol.equals("int"))
            {
                function_header += ")I";
            }
            else if(return_symbol.equals("boolean"))
            {
                function_header += ")Z";
            }
            else if (returnSymbol.equals("int[]"))
            {
                function_header += function_header + ")[I";

            }
        }
        file.print(function_header);
    }

    //limites
    file.println("locals_" + name);
    file.println("stack_" + name);

    //statements
    int children = function.jjtGetNumChildren();
    for(int i = 0; i < children; i++)
    {
        //statementToJVM
    }

    //return
    return_symbol = function_table.getReturnType();
    if(function_table.getReturnType().equals("void"))
    {
        file.println("  return");
    }
    else
    {
        //printFileLoadVariable(file, st, não sei como passar aqui o simbolo de retorno como node, "ID")
        if(return_symbol.equals("int") || return_symbol.equals("boolean"))
        {
            file.println("  ireturn");
        }
        else
        {
            file.println("  areturn");
        }
    }

    file.println(".end method\n");

  }