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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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// CheckStyle: start generated
package com.oracle.truffle.polyglot;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.TruffleLanguage;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.dsl.GeneratedBy;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.library.DynamicDispatchLibrary;
import com.oracle.truffle.api.library.LibraryExport;
import com.oracle.truffle.api.library.LibraryFactory;
import com.oracle.truffle.api.nodes.NodeCost;
import com.oracle.truffle.polyglot.LegacyScopesBridge.EmptyObject;

@GeneratedBy(EmptyObject.class)
final class EmptyObjectGen {

    private static final LibraryFactory DYNAMIC_DISPATCH_LIBRARY_ = LibraryFactory.resolve(DynamicDispatchLibrary.class);

    static  {
        LibraryExport.register(EmptyObject.class, new InteropLibraryExports());
    }

    private EmptyObjectGen() {
    }

    @GeneratedBy(EmptyObject.class)
    private static final class InteropLibraryExports extends LibraryExport {

        private InteropLibraryExports() {
            super(InteropLibrary.class, EmptyObject.class, false);
        }

        @Override
        protected InteropLibrary createUncached(Object receiver) {
            assert receiver instanceof EmptyObject;
            InteropLibrary uncached = new Uncached(receiver);
            return uncached;
        }

        @Override
        protected InteropLibrary createCached(Object receiver) {
            assert receiver instanceof EmptyObject;
            return new Cached(receiver);
        }

        @GeneratedBy(EmptyObject.class)
        private static final class Cached extends InteropLibrary {

            private final Class receiverClass_;

            Cached(Object originalReceiver) {
                EmptyObject receiver = ((EmptyObject) originalReceiver) ;
                this.receiverClass_ = receiver.getClass();
            }

            @Override
            public boolean accepts(Object receiver) {
                assert receiver.getClass() != this.receiverClass_ || DYNAMIC_DISPATCH_LIBRARY_.getUncached().dispatch(receiver) == null : "Invalid library export. Exported receiver with dynamic dispatch found but not expected.";
                return receiver.getClass() == this.receiverClass_;
            }

            @Override
            public boolean hasLanguage(Object receiver) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return (CompilerDirectives.castExact(receiver, receiverClass_)).hasLanguage();
            }

            @Override
            public Class> getLanguage(Object receiver) throws UnsupportedMessageException {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return (CompilerDirectives.castExact(receiver, receiverClass_)).getLanguage();
            }

            @Override
            public boolean isScope(Object receiver) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return (CompilerDirectives.castExact(receiver, receiverClass_)).isScope();
            }

            @Override
            public boolean hasMembers(Object receiver) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return (CompilerDirectives.castExact(receiver, receiverClass_)).hasMembers();
            }

            @Override
            public Object getMembers(Object receiver, boolean includeInternal) throws UnsupportedMessageException {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return (CompilerDirectives.castExact(receiver, receiverClass_)).getMembers(includeInternal);
            }

            @Override
            public Object toDisplayString(Object receiver, boolean allowSideEffects) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return (CompilerDirectives.castExact(receiver, receiverClass_)).toDisplayString(allowSideEffects);
            }

        }
        @GeneratedBy(EmptyObject.class)
        private static final class Uncached extends InteropLibrary {

            private final Class receiverClass_;

            Uncached(Object receiver) {
                this.receiverClass_ = ((EmptyObject) receiver).getClass();
            }

            @TruffleBoundary
            @Override
            public boolean accepts(Object receiver) {
                assert receiver.getClass() != this.receiverClass_ || DYNAMIC_DISPATCH_LIBRARY_.getUncached().dispatch(receiver) == null : "Invalid library export. Exported receiver with dynamic dispatch found but not expected.";
                return receiver.getClass() == this.receiverClass_;
            }

            @Override
            public boolean isAdoptable() {
                return false;
            }

            @Override
            public NodeCost getCost() {
                return NodeCost.MEGAMORPHIC;
            }

            @TruffleBoundary
            @Override
            public boolean hasLanguage(Object receiver) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return ((EmptyObject) receiver) .hasLanguage();
            }

            @TruffleBoundary
            @Override
            public Class> getLanguage(Object receiver) throws UnsupportedMessageException {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return ((EmptyObject) receiver) .getLanguage();
            }

            @TruffleBoundary
            @Override
            public boolean isScope(Object receiver) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return ((EmptyObject) receiver) .isScope();
            }

            @TruffleBoundary
            @Override
            public boolean hasMembers(Object receiver) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return ((EmptyObject) receiver) .hasMembers();
            }

            @TruffleBoundary
            @Override
            public Object getMembers(Object receiver, boolean includeInternal) throws UnsupportedMessageException {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return ((EmptyObject) receiver) .getMembers(includeInternal);
            }

            @TruffleBoundary
            @Override
            public Object toDisplayString(Object receiver, boolean allowSideEffects) {
                assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
                return ((EmptyObject) receiver) .toDisplayString(allowSideEffects);
            }

        }
    }
}