org.evosuite.testcarver.instrument.TransformerUtil.java Source code

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Here is the source code for org.evosuite.testcarver.instrument.TransformerUtil.java

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/**
 * Copyright (C) 2010-2016 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite 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
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite.testcarver.instrument;

import org.evosuite.PackageInfo;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.ClassNode;

public class TransformerUtil {

    public static int modifyVisibility(int access, final int targetAccess) {
        access &= ~Opcodes.ACC_PRIVATE;
        access &= ~Opcodes.ACC_PROTECTED;
        access &= ~Opcodes.ACC_PUBLIC;

        return access |= targetAccess;
    }

    public static boolean isStatic(final int access) {
        return (access & Opcodes.ACC_STATIC) != 0;
    }

    public static boolean isPrivate(final int access) {
        return (access & Opcodes.ACC_PRIVATE) != 0;
    }

    public static boolean isPublic(final int access) {
        return (access & Opcodes.ACC_PUBLIC) != 0;
    }

    public static boolean isProtected(final int access) {
        return (access & Opcodes.ACC_PROTECTED) != 0;
    }

    public static boolean isAbstract(final int access) {
        return (access & Opcodes.ACC_ABSTRACT) != 0;
    }

    public static boolean isNative(final int access) {
        return (access & Opcodes.ACC_NATIVE) != 0;
    }

    public static boolean isClassConsideredForInstrumentation(final String className) {
        // we exclude standard java and sun packages as well the Prototype package
        // TODO use regex for check
        // TODO use configuration for exclusion

        return !(className.startsWith("sun") || className.startsWith("com/sun") || className.startsWith("java")
                || className.startsWith("java/lang") || className.startsWith("$Proxy") || // ignore all dynamic proxies (http://docs.oracle.com/javase/1.3/docs/guide/reflection/proxy.html)
                className.startsWith(PackageInfo.getEvoSuitePackageWithSlash() + "/testcarver"));
    }

    public static boolean isDependency(final String className) {
        // TODO use regex for check
        // TODO use configuration for exclusion
        return (className.startsWith("sun") || className.startsWith("com/sun") || className.startsWith("java")
                || className.startsWith("com/thoughtworks/xstream") || className.startsWith("org/xmlpull") ||
                //               className.startsWith("gnu/trove") ||
                className.startsWith("org/eclipse/jdt") || className.startsWith("org/slf4j"));
    }

    public static boolean isClassAccessible(final ClassNode cn) {

        return (cn.access & Opcodes.ACC_INTERFACE) == 0
                && (((cn.access & Opcodes.ACC_PUBLIC) != 0) || ((cn.access & Opcodes.ACC_PROTECTED) != 0));
    }
}