问为什么在添加@Specialization注解时Truffle DSL会出错？

EN

我正在尝试将Truffle框架实现到一种现有的语言(INI)中，并且我设法运行具有基本功能和Truffle的语言。但是，当我尝试向我的方法添加@Specialization注释时，编译器崩溃并输出以下消息：

src/main/java/ini/eval/function/PrintFunction.java:[17,17] Not enough child node declarations found. Please annotate the node class with addtional @NodeChild annotations or remove all execute methods that do not provide all evaluated values. The following execute methods do not provide all evaluated values for the expected signature size 1: [executeGeneric(VirtualFrame), executeNumber(VirtualFrame), executeBoolean(VirtualFrame), executeChar(VirtualFrame), executeString(VirtualFrame)]

但是，当我删除@Specialization注释时，它工作得很好

这是我唯一将特殊化放在其中的类：

@NodeInfo(shortName = "print")
@GenerateNodeFactory()
public abstract class PrintFunction extends BuiltInExecutable {

    public PrintFunction(IniParser parser, String name, String[] parameterNames) {
        super();
    }

    private static final PrintStream out = System.out;

    @Specialization
    public Number print(Number value) {
        doPrint(value);
        return value;
    }

    @TruffleBoundary
    private static void doPrint(Number value) {
        out.print(value);
    }

    ... More specializations for other types (boolean, and String)

    @Specialization
    public Object print(Object value) {
        doPrint(value);
        return value;
    }

    @TruffleBoundary
    private static void doPrint(Object value) {
        out.print(value);
    }
}

所有节点的超类(AstElement)具有方法executeGeneric(VirtaulFrame)和executeNumber、executeBoolean、executeChar和executeString。所以类PrintFunction也有这些方法

那么，您认为是什么真正导致了错误消息，或者至少是什么意思？

我从Mumbler语言和SimpleLanguage中获得了灵感，这两种语言都是用Truffle实现的。