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Truffle is a multi-language framework for executing dynamic languages that achieves high performance when combined with Graal.

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package com.oracle.truffle.api.interop.java;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.api.TruffleLanguage;
import com.oracle.truffle.api.interop.ForeignAccess;
import com.oracle.truffle.api.dsl.UnsupportedSpecializationException;
import com.oracle.truffle.api.interop.UnsupportedTypeException;
import java.util.List;
abstract class NewNodeSub extends com.oracle.truffle.api.interop.java.JavaObjectMessageResolution.NewNode {
    public abstract Object executeWithTarget(VirtualFrame frame, Object o0, Object o1);
    @Specialization
    protected Object accessWithTarget(com.oracle.truffle.api.interop.java.JavaObject object, java.lang.Object[] args) {
        return access(object, args);
    }
    private final static class NEWRootNode extends RootNode {
        protected NEWRootNode(Class> language) {
            super(language, null, null);
        }

        @Child private NewNodeSub node = com.oracle.truffle.api.interop.java.NewNodeSubNodeGen.create();
        @Override
        public Object execute(VirtualFrame frame) {
            try {
              Object receiver = ForeignAccess.getReceiver(frame);
              List arguments = ForeignAccess.getArguments(frame);
              Object[] args = new Object[arguments.size()];
              for (int i = 0; i < arguments.size(); i++) {
                args[i] = arguments.get(i);
              }
              return node.executeWithTarget(frame, receiver, args);
            } catch (UnsupportedSpecializationException e) {
                throw UnsupportedTypeException.raise(e, e.getSuppliedValues());
            }
        }

    }
    public static RootNode createRoot(Class> language) {
        return new NEWRootNode(language);
    }
}