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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * accompanied this code).
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package org.graalvm.compiler.hotspot.management.libgraal.processor;

import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.PackageElement;
import org.graalvm.libgraal.jni.processor.AbstractFromLibGraalProcessor;
import org.graalvm.compiler.hotspot.management.libgraal.annotation.JMXFromLibGraal;
import org.graalvm.compiler.hotspot.management.libgraal.annotation.JMXFromLibGraal.Id;

Processor for the JMXFromLibGraal annotation that generates code to push JNI arguments to the stack and make a JNI call corresponding to a Id. This helps mitigate bugs where incorrect arguments are pushed for a JNI call. Given the low level nature of org.graalvm.nativeimage.StackValue, it's very hard to use runtime assertion checking. /**
 * Processor for the {@link JMXFromLibGraal} annotation that generates code to push JNI arguments to
 * the stack and make a JNI call corresponding to a {@link Id}. This helps mitigate bugs where
 * incorrect arguments are pushed for a JNI call. Given the low level nature of
 * {@code org.graalvm.nativeimage.StackValue}, it's very hard to use runtime assertion checking.
 */
@SupportedAnnotationTypes({"org.graalvm.compiler.hotspot.management.libgraal.annotation.JMXFromLibGraal",
                "org.graalvm.compiler.hotspot.management.libgraal.annotation.JMXFromLibGraalRepeated"})
public class JMXFromLibGraalProcessor extends AbstractFromLibGraalProcessor<Id> {

    public JMXFromLibGraalProcessor() {
        super(Id.class);
    }

    @Override
    protected boolean accept(ExecutableElement annotatedElement) {
        PackageElement pkg = getPackage(annotatedElement);
        return pkg != null && pkg.getQualifiedName().contentEquals("org.graalvm.compiler.hotspot.management.libgraal");
    }

    private static PackageElement getPackage(Element method) {
        Element e = method.getEnclosingElement();
        while (e != null && e.getKind() != ElementKind.PACKAGE) {
            e = e.getEnclosingElement();
        }
        return (PackageElement) e;
    }
}