com.oracle.graal.pointsto.standalone.features.StandaloneAnalysisFeatureManager Maven / Gradle / Ivy

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A standalone version of SubstrateVM static analysis to use for general pointsto analysis
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/*
 * Copyright (c) 2022, 2022, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2022, 2022, Alibaba Group Holding Limited. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.oracle.graal.pointsto.standalone.features;

import com.oracle.graal.pointsto.util.AnalysisError;
import com.oracle.svm.util.ReflectionUtil;
import jdk.graal.compiler.options.Option;
import jdk.graal.compiler.options.OptionKey;
import jdk.graal.compiler.options.OptionType;
import jdk.graal.compiler.options.OptionValues;
import org.graalvm.nativeimage.hosted.Feature;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Consumer;

public class StandaloneAnalysisFeatureManager {

    public static class Options {
        @Option(help = "Comma separated features used in standalone analysis.", type = OptionType.User)//
        public static final OptionKey AnalysisTimeFeatures = new OptionKey<>(null);
    }

    private final List features = new ArrayList<>();
    private final Set featureClassNames = new HashSet<>();
    private final Set> featureClasses = new HashSet<>();
    private boolean inited = false;
    private final OptionValues options;

    public StandaloneAnalysisFeatureManager(OptionValues options) {
        this.options = options;
    }

    public void registerFeaturesFromOptions() {
        String featureNames = Options.AnalysisTimeFeatures.getValue(options);
        if (featureNames != null) {
            for (String featureName : featureNames.split(",")) {
                registerFeature(featureName);
            }
        }
    }

    @SuppressWarnings("unchecked")
    public void registerFeature(String featureClassName) {
        if (!featureClassNames.contains(featureClassName)) {
            featureClassNames.add(featureClassName);
        } else {
            return;
        }
        Class featureClass = null;
        try {
            featureClass = (Class) Class.forName(featureClassName);
        } catch (ClassNotFoundException e) {
            AnalysisError.shouldNotReachHere("Feature class " + featureClassName + " is not found in current classpath.");
        }
        registerFeature(featureClass);
    }

    public void registerFeature(Class feature) {
        featureClasses.add(feature);
    }

    public void forEachFeature(Consumer consumer) {
        if (!inited) {
            initAllFeatures();
            inited = true;
        }
        for (Feature feature : features) {
            consumer.accept(feature);
        }
    }

    private void initAllFeatures() {
        for (Class featureClass : featureClasses) {
            Feature feature;
            try {
                feature = ReflectionUtil.lookupConstructor(featureClass).newInstance();
                features.add(feature);
            } catch (ReflectiveOperationException e) {
                AnalysisError.shouldNotReachHere(e);
            }
        }
    }
}