Example usage for org.objectweb.asm.tree ClassNode ClassNode

Introduction

In this page you can find the example usage for org.objectweb.asm.tree ClassNode ClassNode.

Prototype

public ClassNode(final int api) 

Source Link

Document

Constructs a new ClassNode .

Usage

From source file:br.usp.each.saeg.badua.cli.Report.java

License:Open Source License

public void run() throws IOException, ClassNotFoundException {

    data = read(inputFile);/*from  w w w  .j av a  2 s  .c o m*/

    final List<File> files = Files.listRecursive(classes, new FilenameFilter() {

        @Override
        public boolean accept(final File dir, final String name) {
            return new File(dir, name).isFile();
        }

    });

    for (final File file : files) {
        final InputStream input = new FileInputStream(file);
        final ContentTypeDetector detector = new ContentTypeDetector(input);
        try {
            if (detector.getType() == ContentTypeDetector.CLASSFILE) {
                final ClassReader cr = new ClassReader(detector.getInputStream());
                final ClassNode cn = new ClassNode(Opcodes.ASM5);
                cr.accept(cn, ClassReader.EXPAND_FRAMES);
                classId = CRC64.checksum(cr.b);
                analyze(cn);
            }
        } finally {
            input.close();
        }
    }
}

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From source file:com.android.build.gradle.integration.common.utils.ZipHelper.java

License:Apache License

public static FieldNode checkClassFile(@NonNull File jarFile, @NonNull String entryName,
        @NonNull String fieldName) throws IOException {

    try (ZipFile zipFile = new ZipFile(jarFile)) {
        ZipEntry entry = zipFile.getEntry(entryName);
        assertThat(entry).named(entryName + " entry").isNotNull();
        ClassReader classReader = new ClassReader(zipFile.getInputStream(entry));
        ClassNode mainTestClassNode = new ClassNode(Opcodes.ASM5);
        classReader.accept(mainTestClassNode, 0);

        FieldNode fieldNode = null;/*  w  w  w.  j  a  v a2 s.  c o m*/
        for (Object o : mainTestClassNode.fields) {
            FieldNode fn = (FieldNode) o;
            if (fn.name.equals(fieldName)) {
                fieldNode = fn;
                break;
            }
        }

        assert fieldNode != null;
        return fieldNode;
    }
}

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From source file:com.android.build.gradle.shrinker.AbstractShrinkerTest.java

License:Apache License

@NonNull
private static ClassNode getClassNode(File classFile) throws IOException {
    ClassReader classReader = new ClassReader(Files.toByteArray(classFile));
    ClassNode classNode = new ClassNode(Opcodes.ASM5);
    classReader.accept(classNode, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
    return classNode;
}

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From source file:com.android.build.gradle.shrinker.FullRunShrinker.java

License:Apache License

/** Updates the graph with nodes and edges based on the given class file. */
private void processProgramClassFile(byte[] bytes, @NonNull File classFile,
        @NonNull final PostProcessingData<T> postProcessingData) {
    ClassNode classNode = new ClassNode(Opcodes.ASM5);
    ClassVisitor depsFinder = new DependencyFinderVisitor<T>(mGraph, classNode) {
        @Override//from   w w w .j  a va  2  s .  c  o  m
        protected void handleDependency(T source, T target, DependencyType type) {
            mGraph.addDependency(source, target, type);
        }

        @Override
        protected void handleMultipleInheritance(T klass) {
            postProcessingData.getMultipleInheritance().add(klass);
        }

        @Override
        protected void handleVirtualMethod(T method) {
            postProcessingData.getVirtualMethods().add(method);
        }

        @Override
        protected void handleInterfaceInheritance(T klass) {
            postProcessingData.getInterfaceInheritance().add(klass);
        }

        @Override
        protected void handleUnresolvedReference(PostProcessingData.UnresolvedReference<T> reference) {
            postProcessingData.getUnresolvedReferences().add(reference);
        }
    };
    ClassVisitor structureVisitor = new ClassStructureVisitor<>(mGraph, classFile, depsFinder);
    ClassReader classReader = new ClassReader(bytes);
    classReader.accept(structureVisitor, ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
}

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From source file:com.android.builder.shrinker.Shrinker.java

License:Apache License

@NonNull
private static ClassNode readClassNode(File classFile) throws IOException {
    ClassReader classReader = new ClassReader(Files.toByteArray(classFile));
    ClassNode classNode = new ClassNode(Opcodes.ASM5);
    classReader.accept(classNode, 0);/*from ww  w .j  a  va 2 s .  c o m*/
    return classNode;
}

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From source file:com.android.builder.shrinker.Shrinker.java

License:Apache License

private void processNewClassFile(File classFile, Set<T> virtualMethods, Set<T> multipleInheritance,
        Set<UnresolvedReference<T>> unresolvedReferences) throws IOException {
    // TODO: Can we run keep rules in a visitor?
    // TODO: See if computing all these things on the class nodes is faster (on big projects).
    ClassNode classNode = new ClassNode(Opcodes.ASM5);
    ClassVisitor depsFinder = new DependencyFinderVisitor<T>(mGraph, classNode, virtualMethods,
            unresolvedReferences, multipleInheritance) {
        @Override/*  ww w. j av  a 2  s.com*/
        protected void handleDependency(T source, T target, DependencyType type) {
            mGraph.addDependency(source, target, type);
        }
    };
    ClassVisitor structureVisitor = new ClassStructureVisitor<T>(mGraph, classFile, depsFinder);
    ClassReader classReader = new ClassReader(Files.toByteArray(classFile));
    classReader.accept(structureVisitor, ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
}

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From source file:com.android.builder.shrinker.ShrinkerTest.java

License:Apache License

private static Set<String> getMembers(File classFile) throws IOException {
    ClassReader classReader = new ClassReader(Files.toByteArray(classFile));
    ClassNode classNode = new ClassNode(Opcodes.ASM5);
    classReader.accept(classNode, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);

    Set<String> methods = Sets.newHashSet();
    //noinspection unchecked - ASM API
    for (MethodNode methodNode : (List<MethodNode>) classNode.methods) {
        methods.add(methodNode.name + ":" + methodNode.desc);
    }/*from   w w w.  ja  v a  2  s .c  o  m*/

    //noinspection unchecked - ASM API
    for (FieldNode fieldNode : (List<FieldNode>) classNode.fields) {
        methods.add(fieldNode.name + ":" + fieldNode.desc);
    }

    return methods;
}

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From source file:com.android.builder.testing.MockableJarGenerator.java

License:Apache License

/**
 * Writes a modified *.class file to the output JAR file.
 *//*from   ww w . java 2 s.  c o m*/
private void rewriteClass(JarEntry entry, InputStream inputStream, JarOutputStream outputStream)
        throws IOException {
    ClassReader classReader = new ClassReader(inputStream);
    ClassNode classNode = new ClassNode(Opcodes.ASM5);

    classReader.accept(classNode, EMPTY_FLAGS);

    modifyClass(classNode);

    ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
    classNode.accept(classWriter);

    outputStream.putNextEntry(new ZipEntry(entry.getName()));
    outputStream.write(classWriter.toByteArray());
}

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From source file:com.costlowcorp.eriktools.jardetails.JarNavigationController.java

private void readClass(String filename) {
    try (JarFile jar = new JarFile(this.file)) {
        final JarEntry entry = jar.getJarEntry(filename);
        final ClassNode node = new ClassNode(ASM5);
        final InputStream in = jar.getInputStream(entry);
        final ClassReader reader = new ClassReader(in);
        //reader.accept(node, ClassReader.EXPAND_FRAMES);

        final Printer asmifier = new ASMifier();
        //final InputStream in2 = jar.getInputStream(entry);
        final ByteArrayOutputStream bout = new ByteArrayOutputStream();

        final TraceClassVisitor tracer = new TraceClassVisitor(node, asmifier, new PrintWriter(bout));
        reader.accept(tracer, ClassReader.EXPAND_FRAMES);
        final String className = filename.replace('/', '.').substring(0, filename.length() - ".class".length());
        final String javap = JavaPGrabber.INSTANCE.run(file.toPath(), className);
        Platform.runLater(() -> {/*w  w  w.  j  av a2s . c  o m*/
            classDetails.populateClassSummary(node.name, filename, node.sourceFile, node.version,
                    node.superName, node.interfaces);
            classDetails.populateAsmifierTab(bout.toString());
            classDetails.populateJavaPTab(javap);
        });
    } catch (IOException ex) {
        Logger.getLogger(JarNavigationController.class.getName()).log(Level.SEVERE, null, ex);
    }

}

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From source file:com.dragome.compiler.invokedynamic.InvokeDynamicBackporter.java

License:Open Source License

public static byte[] transform(byte[] bytecode) {
    ClassNode classNode = new ClassNode(Opcodes.ASM5);
    InvokeDynamicConverter invokeDynamicConverter = new InvokeDynamicConverter(classNode);
    new ClassReader(bytecode).accept(invokeDynamicConverter, 0);
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    classNode.accept(cw);/*from  w w w. j a  v  a2s.c o m*/
    return cw.toByteArray();
}

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