got a Truffle Exception

[Grace Wang]

Hi,

I’m using truffle in a testing project, but somehow got the following exception. I’m not familiar with the code, but I’d like to know  what could possibly cause this exception?

Thank you very much!

Regards,
Grace Wang


Exception in thread "main" java.lang.IllegalStateException: This node cannot be replaced, because it does not yet have a parent.
	at com.oracle.truffle.api.nodes.Node.replaceHelper(Node.java:272)
	at com.oracle.truffle.api.nodes.NodeUtil.nonAtomicReplace(NodeUtil.java:195)
	at com.oracle.truffle.api.dsl.internal.SpecializationNode.insertAt(SpecializationNode.java:523)
	at com.oracle.truffle.api.dsl.internal.SpecializationNode$InsertionEvent1.call(SpecializationNode.java:649)
	at com.oracle.truffle.api.dsl.internal.SpecializationNode$InsertionEvent1.call(SpecializationNode.java:633)
	at com.oracle.truffle.api.nodes.Node.atomic(Node.java:521)
	at com.oracle.truffle.api.dsl.internal.SpecializationNode.uninitialized(SpecializationNode.java:395)
	at mumbler.truffle.node.special.QuoteNodeGen$UninitializedNode_.acceptAndExecute(QuoteNodeGen.java:160)
	at mumbler.truffle.node.special.QuoteNodeGen$BaseNode_.executeGeneric(QuoteNodeGen.java:91)
	at mumbler.truffle.node.special.QuoteNodeGen.execute(QuoteNodeGen.java:41)
	at mumbler.truffle.newparser.TruffleMumblerMain2.testBuilder(TruffleMumblerMain2.java:127)
	at mumbler.truffle.newparser.TruffleMumblerMain2.testMumExec(TruffleMumblerMain2.java:75)
	at mumbler.truffle.newparser.TruffleMumblerMain2.main(TruffleMumblerMain2.java:49)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)



I also show the related code causing the exception here (although these are probably not helpful):

(1) QuoteNodeGen.java
@GeneratedBy(QuoteNode.class)
private static final class UninitializedNode_ extends BaseNode_ {

    UninitializedNode_(QuoteNodeGen root) {
        super(root, 2147483647);
    }

    @Override
    public Object acceptAndExecute(Frame frameValue, Object literalNodeValue) {
        return uninitialized(frameValue, literalNodeValue);
    }

    static BaseNode_ create(QuoteNodeGen root) {
        return new UninitializedNode_(root);
    }

}
(2)QuoteNodeGen.java
public Object executeGeneric(Frame frameValue) {
    Object literalNodeValue_ = executeLiteralNode_(frameValue);
    return acceptAndExecute(frameValue, literalNodeValue_);
}
(3) QuoteNodeGen.java
@Override
public Object execute(VirtualFrame frameValue) {
    return specialization_.executeGeneric(frameValue);
}