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()

Source Link

Document

Constructs a new ClassNode .

Usage

From source file:com.android.build.gradle.internal2.incremental.IncrementalVisitor.java

License:Apache License

@NonNull
private static List<ClassNode> parseParents(@NonNull File inputFile, @NonNull ClassNode classNode)
        throws IOException {
    File binaryFolder = getBinaryFolder(inputFile, classNode);
    List<ClassNode> parentNodes = new ArrayList<>();
    String currentParentName = classNode.superName;

    while (currentParentName != null) {
        File parentFile = new File(binaryFolder, currentParentName + ".class");
        if (parentFile.exists()) {
            LOG.info("Parsing %s.", parentFile);
            InputStream parentFileClassReader = new BufferedInputStream(new FileInputStream(parentFile));
            ClassReader parentClassReader = new ClassReader(parentFileClassReader);
            ClassNode parentNode = new ClassNode();
            parentClassReader.accept(parentNode, ClassReader.EXPAND_FRAMES);
            parentNodes.add(parentNode);
            currentParentName = parentNode.superName;
        } else {/*from w w  w. j  av  a2s  . c om*/
            // May need method information from outside of the current project. Thread local class reader
            // should be the one
            try {
                ClassReader parentClassReader = new ClassReader(Thread.currentThread().getContextClassLoader()
                        .getResourceAsStream(currentParentName + ".class"));
                ClassNode parentNode = new ClassNode();
                parentClassReader.accept(parentNode, ClassReader.EXPAND_FRAMES);
                parentNodes.add(parentNode);
                currentParentName = parentNode.superName;
            } catch (IOException e) {
                // Could not locate parent class. This is as far as we can go locating parents.
                LOG.warning("IncrementalVisitor parseParents could not locate %1$s "
                        + "which is an ancestor of project class %2$s.\n"
                        + "%2$s is not eligible for hot swap.", currentParentName, classNode.name);
                return ImmutableList.of();
            }
        }
    }
    return parentNodes;
}

From source file:com.android.build.gradle.internal2.incremental.IncrementalVisitor.java

License:Apache License

@Nullable
private static ClassNode parsePackageInfo(@NonNull File inputFile, @NonNull ClassNode classNode)
        throws IOException {

    File packageFolder = inputFile.getParentFile();
    File packageInfoClass = new File(packageFolder, "package-info.class");
    if (packageInfoClass.exists()) {
        InputStream reader = new BufferedInputStream(new FileInputStream(packageInfoClass));
        ClassReader classReader = new ClassReader(reader);
        ClassNode packageInfo = new ClassNode();
        classReader.accept(packageInfo, ClassReader.EXPAND_FRAMES);
        return packageInfo;
    }//from w w w.  j av a  2  s . com
    return null;
}

From source file:com.android.ide.eclipse.apt.internal.crawler.ClassCrawler.java

License:Apache License

/**
 * Scans an Android project directory to retrieve all the class files in it.
 * @param dir - The directory to be scanned
 * @return A collection of class nodes ready to be used with the ASM library for the analysis
 * @throws FileNotFoundException// w  w  w .  j  a  v  a 2 s  .  c  o m
 * @throws IOException
 */
private static Collection<ClassNode> scanDirectory(final File dir) throws FileNotFoundException, IOException {
    final LinkedList<ClassNode> classes = new LinkedList<ClassNode>();
    final File[] files = dir.listFiles();
    for (final File file : files) {
        if (file.isFile()) {
            final String name = file.getName();
            //get all the classes except the class R
            if (name.endsWith(".class") && !name.startsWith("R$") && !name.equals("R.class")) {
                final ClassReader classReader = new ClassReader(new FileInputStream(file));
                final ClassNode classNode = new ClassNode();
                classReader.accept(classNode, 0);
                classes.add(classNode);
            }
        } else {
            classes.addAll(scanDirectory(file));
        }
    }
    sClassNodes = classes;
    return classes;
}

From source file:com.android.tools.klint.client.api.LintDriver.java

License:Apache License

private void runClassDetectors(Scope scope, List<ClassEntry> entries, Project project, Project main) {
    if (mScope.contains(scope)) {
        List<Detector> classDetectors = mScopeDetectors.get(scope);
        if (classDetectors != null && !classDetectors.isEmpty() && !entries.isEmpty()) {
            AsmVisitor visitor = new AsmVisitor(mClient, classDetectors);

            String sourceContents = null;
            String sourceName = "";
            mOuterClasses = new ArrayDeque<ClassNode>();
            ClassEntry prev = null;/* w  w  w .j  a  v  a 2 s  . c o  m*/
            for (ClassEntry entry : entries) {
                if (prev != null && prev.compareTo(entry) == 0) {
                    // Duplicate entries for some reason: ignore
                    continue;
                }
                prev = entry;

                ClassReader reader;
                ClassNode classNode;
                try {
                    reader = new ClassReader(entry.bytes);
                    classNode = new ClassNode();
                    reader.accept(classNode, 0 /* flags */);
                } catch (Throwable t) {
                    mClient.log(null, "Error processing %1$s: broken class file?", entry.path());
                    continue;
                }

                ClassNode peek;
                while ((peek = mOuterClasses.peek()) != null) {
                    if (classNode.name.startsWith(peek.name)) {
                        break;
                    } else {
                        mOuterClasses.pop();
                    }
                }
                mOuterClasses.push(classNode);

                if (isSuppressed(null, classNode)) {
                    // Class was annotated with suppress all -- no need to look any further
                    continue;
                }

                if (sourceContents != null) {
                    // Attempt to reuse the source buffer if initialized
                    // This means making sure that the source files
                    //    foo/bar/MyClass and foo/bar/MyClass$Bar
                    //    and foo/bar/MyClass$3 and foo/bar/MyClass$3$1 have the same prefix.
                    String newName = classNode.name;
                    int newRootLength = newName.indexOf('$');
                    if (newRootLength == -1) {
                        newRootLength = newName.length();
                    }
                    int oldRootLength = sourceName.indexOf('$');
                    if (oldRootLength == -1) {
                        oldRootLength = sourceName.length();
                    }
                    if (newRootLength != oldRootLength
                            || !sourceName.regionMatches(0, newName, 0, newRootLength)) {
                        sourceContents = null;
                    }
                }

                ClassContext context = new ClassContext(this, project, main, entry.file, entry.jarFile,
                        entry.binDir, entry.bytes, classNode, scope == Scope.JAVA_LIBRARIES /*fromLibrary*/,
                        sourceContents);

                try {
                    visitor.runClassDetectors(context);
                } catch (Exception e) {
                    mClient.log(e, null);
                }

                if (mCanceled) {
                    return;
                }

                sourceContents = context.getSourceContents(false/*read*/);
                sourceName = classNode.name;
            }

            mOuterClasses = null;
        }
    }
}

From source file:com.android.tools.klint.client.api.LintDriver.java

License:Apache License

/**
 * Returns the {@link ClassNode} corresponding to the given type, if possible, or null
 *
 * @param type the fully qualified type, using JVM signatures (/ and $, not . as path
 *             separators)/*from w w w  .  j a  va2  s . c o m*/
 * @param flags the ASM flags to pass to the {@link ClassReader}, normally 0 but can
 *              for example be {@link ClassReader#SKIP_CODE} and/oor
 *              {@link ClassReader#SKIP_DEBUG}
 * @return the class node for the type, or null
 */
@Nullable
public ClassNode findClass(@NonNull ClassContext context, @NonNull String type, int flags) {
    String relative = type.replace('/', File.separatorChar) + DOT_CLASS;
    File classFile = findClassFile(context.getProject(), relative);
    if (classFile != null) {
        if (classFile.getPath().endsWith(DOT_JAR)) {
            // TODO: Handle .jar files
            return null;
        }

        try {
            byte[] bytes = mClient.readBytes(classFile);
            ClassReader reader = new ClassReader(bytes);
            ClassNode classNode = new ClassNode();
            reader.accept(classNode, flags);

            return classNode;
        } catch (Throwable t) {
            mClient.log(null, "Error processing %1$s: broken class file?", classFile.getPath());
        }
    }

    return null;
}

From source file:com.android.tools.lint.checks.ApiLookupTest.java

License:Apache License

private static void analyzeClass(@NonNull byte[] bytes, @NonNull Map<String, ClassNode> classes,
        @NonNull Map<String, Integer> minSdkMap, int manifestMinSdk) {

    ClassReader reader = new ClassReader(bytes);
    ClassNode classNode = new ClassNode();
    reader.accept(classNode, 0 /* flags */);

    assertNull(classes.get(classNode.name));
    classes.put(classNode.name, classNode);

    int minSdk = manifestMinSdk != -1 ? manifestMinSdk : getMinSdk(classNode.name, minSdkMap);
    minSdkMap.put(classNode.name, minSdk);
}

From source file:com.android.tools.lint.client.api.LintDriver.java

License:Apache License

private void runClassDetectors(Scope scope, List<ClassEntry> entries, Project project, Project main) {
    if (mScope.contains(scope)) {
        List<Detector> classDetectors = mScopeDetectors.get(scope);
        if (classDetectors != null && !classDetectors.isEmpty() && !entries.isEmpty()) {
            AsmVisitor visitor = new AsmVisitor(mClient, classDetectors);

            String sourceContents = null;
            String sourceName = "";
            mOuterClasses = new ArrayDeque<ClassNode>();
            for (ClassEntry entry : entries) {
                ClassReader reader;//from   w  ww  . j  ava  2  s . c  om
                ClassNode classNode;
                try {
                    reader = new ClassReader(entry.bytes);
                    classNode = new ClassNode();
                    reader.accept(classNode, 0 /* flags */);
                } catch (Throwable t) {
                    mClient.log(null, "Error processing %1$s: broken class file?", entry.path());
                    continue;
                }

                ClassNode peek;
                while ((peek = mOuterClasses.peek()) != null) {
                    if (classNode.name.startsWith(peek.name)) {
                        break;
                    } else {
                        mOuterClasses.pop();
                    }
                }
                mOuterClasses.push(classNode);

                if (isSuppressed(null, classNode)) {
                    // Class was annotated with suppress all -- no need to look any further
                    continue;
                }

                if (sourceContents != null) {
                    // Attempt to reuse the source buffer if initialized
                    // This means making sure that the source files
                    //    foo/bar/MyClass and foo/bar/MyClass$Bar
                    //    and foo/bar/MyClass$3 and foo/bar/MyClass$3$1 have the same prefix.
                    String newName = classNode.name;
                    int newRootLength = newName.indexOf('$');
                    if (newRootLength == -1) {
                        newRootLength = newName.length();
                    }
                    int oldRootLength = sourceName.indexOf('$');
                    if (oldRootLength == -1) {
                        oldRootLength = sourceName.length();
                    }
                    if (newRootLength != oldRootLength
                            || !sourceName.regionMatches(0, newName, 0, newRootLength)) {
                        sourceContents = null;
                    }
                }

                ClassContext context = new ClassContext(this, project, main, entry.file, entry.jarFile,
                        entry.binDir, entry.bytes, classNode, scope == Scope.JAVA_LIBRARIES /*fromLibrary*/,
                        sourceContents);

                try {
                    visitor.runClassDetectors(context);
                } catch (Exception e) {
                    mClient.log(e, null);
                }

                if (mCanceled) {
                    return;
                }

                sourceContents = context.getSourceContents(false/*read*/);
                sourceName = classNode.name;
            }

            mOuterClasses = null;
        }
    }
}

From source file:com.android.tools.lint.psi.extract.ExtractPsi.java

License:Apache License

private void readClasses(@NonNull List<File> jars) throws IOException {
    for (File jar : jars) {
        JarInputStream zis = null;
        try {//  w w  w.jav a 2  s .co m
            FileInputStream fis = new FileInputStream(jar);
            try {
                zis = new JarInputStream(fis);
                ZipEntry entry = zis.getNextEntry();
                while (entry != null) {
                    boolean directory = entry.isDirectory();
                    String name = entry.getName();
                    if (!directory && name.endsWith(DOT_CLASS)) {
                        byte[] bytes = ByteStreams.toByteArray(zis);
                        if (bytes != null) {
                            ClassReader reader;
                            ClassNode classNode;
                            reader = new ClassReader(bytes);
                            classNode = new ClassNode();
                            reader.accept(classNode, 0 /* flags */);
                            // Classes shouldn't have been duplicated
                            //assert !mClassNodeMap.containsKey(name) : name;
                            mClassNodeMap.put(name, classNode);
                        }
                    } else if (!directory) {
                        byte[] bytes = ByteStreams.toByteArray(zis);
                        if (bytes != null) {
                            mResourceMap.put(name, bytes);
                        }
                    }
                    entry = zis.getNextEntry();
                }
            } finally {
                Closeables.close(fis, true);
            }
        } finally {
            Closeables.close(zis, false);
        }
    }
}

From source file:com.builtbroken.mc.patch.ASMUtility.java

/**
 * Starts the injection process of editing byte code
 *
 * @param bytes/*w w  w .j  av a 2s  .c  om*/
 * @return
 */
public static ClassNode startInjection(String name, byte[] bytes) {
    CoreMod.logger.info("Starting injection process for " + name);
    final ClassNode node = new ClassNode();
    final ClassReader reader = new ClassReader(bytes);
    reader.accept(node, 0);
    return node;
}

From source file:com.builtbroken.profiler.asm.WorldTransformer.java

private ClassNode startInjection(byte[] bytes) {
    final ClassNode node = new ClassNode();
    final ClassReader reader = new ClassReader(bytes);
    reader.accept(node, 0);//from  w  w w. jav  a  2 s  .c o  m

    return node;
}