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:edu.umd.cs.findbugs.classfile.engine.asm.ClassNodeAnalysisEngine.java

License:Open Source License

@Override
public ClassNode analyze(IAnalysisCache analysisCache, ClassDescriptor descriptor)
        throws CheckedAnalysisException {
    ClassReader classReader = analysisCache.getClassAnalysis(ClassReader.class, descriptor);

    ICodeBaseEntry entry = analysisCache.getClassPath().lookupResource(descriptor.toResourceName());

    // One of the less-than-ideal features of ASM is that
    // invalid classfile format is indicated by a
    // random runtime exception rather than something
    // indicative of the real problem.
    try {//from ww  w. j av  a  2s .  c  o m
        ClassNode cn = new ClassNode();
        classReader.accept(cn, 0);
        return cn;
    } catch (RuntimeException e) {
        throw new InvalidClassFileFormatException(descriptor, entry, e);
    }
}

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From source file:fi.luontola.buildtest.AsmUtils.java

License:Open Source License

public static ClassNode readClass(InputStream in) throws IOException {
    ClassNode cn = new ClassNode();
    ClassReader cr = new ClassReader(in);
    cr.accept(cn, 0);/*from w  w  w. j  a  v  a2s .co  m*/
    return cn;
}

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From source file:forgefix.ForgeFixTransformer.java

License:LGPL

@Override
public byte[] transform(String name, String transformedName, byte[] bytes) {
    if (bytes == null)
        return bytes;

    if (transformedName.equals("com.xcompwiz.mystcraft.world.gen.structure.ComponentVillageArchivistHouse")
            || (transformedName.equals(/*from w  w  w  .  jav a2  s  .  c o  m*/
                    "com.xcompwiz.mystcraft.world.gen.structure.ComponentScatteredFeatureSmallLibrary"))) {
        ClassNode classNode = new ClassNode();
        ClassReader classReader = new ClassReader(bytes);

        classReader.accept(classNode, 0);

        MethodNode vanillaMethod = null;
        for (MethodNode method : classNode.methods) {
            if (method.name.equals("generateStructureLectern")) {
                vanillaMethod = method;
            }
        }

        MethodNode moddedMethod = new MethodNode(ASM4, ACC_PROTECTED, "generateStructureLectern",
                getMethodDescriptor(BOOLEAN_TYPE), null, null);
        moddedMethod.desc = "(Lnet/minecraft/world/World;Lnet/minecraft/world/gen/structure/StructureBoundingBox;Ljava/util/Random;IIIIILnet/minecraftforge/common/ChestGenHooks;)Z";
        moddedMethod.instructions.add(new InsnNode(ICONST_0));
        moddedMethod.instructions.add(new InsnNode(IRETURN));

        if (moddedMethod != null) {
            classNode.methods.remove(vanillaMethod);
            moddedMethod.accept(classNode);

            ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
            classNode.accept(writer);
            return writer.toByteArray();
        }
    }

    return bytes;
}

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From source file:fr.theshark34.feelcraft.FeelcraftClassTransformer.java

License:Apache License

/**
 * Patchs the Minecraft class/* w w w  .  ja  va  2  s  .co m*/
 * 
 * @param name
 *            The class name
 * @param bytes
 *            The initial class bytes
 * @param obfuscated
 *            If the class is obfuscated
 * @return The modified bytes
 */
public byte[] patchClassASM(String name, byte[] bytes, boolean obfuscated) {
    // Starting the pre init
    Feelcraft.preInit();

    // Printing messages
    logger.info("[Feelcraft] Starting patching Minecraft");
    logger.info("[Feelcraft] Target class : " + name);

    // Getting the target method if the game is obfuscated or not
    String targetMethod;
    if (obfuscated)
        targetMethod = "ag";
    else
        targetMethod = "startGame";

    // Getting the class nod and reading the initial class
    ClassNode classNode = new ClassNode();
    ClassReader classReader = new ClassReader(bytes);
    classReader.accept(classNode, 0);

    // Just a boolean that will be true if the patch will be done to check
    // if it was done
    boolean patchDone = false;

    // Getting the class methods
    Iterator<MethodNode> methods = classNode.methods.iterator();

    // For each method in the class
    while (methods.hasNext()) {
        // Getting the method
        MethodNode m = methods.next();

        // If the method is our target method
        if ((m.name.equals(targetMethod) && m.desc.equals("()V"))) {
            // Printing a message
            logger.info("[Feelcraft] Patching method : " + m.name + m.desc);

            // Insert a line that will call Feelcraft.start at the top of
            // the method
            m.instructions.insertBefore(m.instructions.getFirst(), new MethodInsnNode(Opcodes.INVOKESTATIC,
                    "fr/theshark34/feelcraft/Feelcraft", "start", "()V", false));

            // Setting patchDone to true
            patchDone = true;

            // Stopping the loop
            break;
        }
    }

    // If the patch wasn't done
    if (!patchDone)
        // Printing a warning message
        logger.warn("[Feelcraft] Warning the patch wasn't done ! Some things will not going to work !");

    // Writing the patched class
    logger.info("[Feelcraft] Writing the patched class");
    ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
    classNode.accept(writer);

    // Printing a done message
    if (patchDone)
        logger.info("[Feelcraft] Successfully patched Minecraft !");
    else
        logger.info("[Feelcraft] Done");

    // Returning the modified bytes
    return writer.toByteArray();
}

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From source file:gemlite.core.internal.asm.serialize.pdxserialize.PdxSFieldProcessor.java

License:Apache License

private List<FieldNode> findKeyNodeListByKeyClass(ClassNode domain) throws IOException {
    List<FieldNode> fieldNodeList = new ArrayList<FieldNode>();

    ClassNode key = null;/*from www  .  j  a v  a  2s.c o m*/

    for (Object o : domain.visibleAnnotations) {
        AnnotationNode an = (AnnotationNode) o;

        if (PdxConstants.AN_Key.equals(an.desc)) {
            Type t = (Type) an.values.get(1);
            InputStream keyClassIn = PdxSerializeHelper.class.getClassLoader()
                    .getResourceAsStream(t.getInternalName() + ".class");
            byte[] keyClassBytes = new byte[keyClassIn.available()];
            keyClassIn.read(keyClassBytes);
            keyClassIn.close();
            ClassReader cr = new ClassReader(keyClassBytes);
            key = new ClassNode();
            cr.accept(key, 0);
            break;
        }
    }

    if (key != null) {
        for (int i = 0; i < key.fields.size(); i++) {
            FieldNode fn = (FieldNode) key.fields.get(i);
            if (fn != null)
                fieldNodeList.add(fn);
        }
    }
    return fieldNodeList;
}

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From source file:gemlite.core.util.GemliteHelper.java

License:Apache License

public final static ClassNode toClassNode(byte[] content) {
    ClassReader cr = new ClassReader(content);
    ClassNode cn = new ClassNode();
    cr.accept(cn, 0);/*from   ww  w. j  av a 2  s. c o  m*/
    return cn;
}

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From source file:gemlite.core.util.GemliteHelper.java

License:Apache License

public final static ClassNode toClassNode(InputStream in) {
    ClassReader cr = null;//w  w  w.  jav  a2  s .  c  o m
    try {
        cr = new ClassReader(in);
    } catch (IOException e) {
        LogUtil.getCoreLog().error("ClassReader new error", e);
        return null;
    }
    ClassNode cn = new ClassNode();
    cr.accept(cn, 0);
    return cn;
}

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From source file:gemlite.core.util.GemliteHelper.java

License:Apache License

public final static void dumpBytecode(byte[] bytes, PrintWriter pw) {
    ClassReader cr = new ClassReader(bytes);
    ClassNode cn = new ClassNode();
    cr.accept(cn, 0);/*from w w  w.  j  a  v a  2s. com*/
    dumpBytecode(cn, pw);
}

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From source file:gemlite.maven.plugin.DomainMojoExecutor.java

License:Apache License

public void processClassFile(Path file) throws IOException {
    String autoSerialType = autoSerializeType;

    BufferedInputStream in = new BufferedInputStream(new FileInputStream(file.toFile()));
    byte[] bytes = new byte[in.available()];
    in.read(bytes);/*from   w  w w .j  av  a2 s .  co  m*/
    in.close();
    ClassReader cr = new ClassReader(bytes);
    ClassNode cn = new ClassNode();
    cr.accept(cn, 0);
    Set<ClassProcessor> used = new HashSet<>();
    if (DomainMojoHelper.log().isDebugEnabled())
        DomainMojoHelper.log().debug("Class name:" + cn.name + " Annotation:" + cn.visibleAnnotations);

    if (cn.visibleAnnotations == null)
        return;

    String desc = "";
    for (Object a : cn.visibleAnnotations) {
        AnnotationNode an = (AnnotationNode) a;

        desc = an.desc;
        ClassProcessor cp = null;
        if (DomainMojoConstant.AN_AutoSerialize.equals(desc)) {
            autoSerialType = getAutoSerializeType(an);
            cp = getClassProcessor(autoSerialType);
        } else
            cp = AnnotationProcessorFactory.getProcessor(desc);

        if (cp == null)
            continue;
        DomainMojoExecutor.usedProcessorSet.add(cp);
        if (DomainMojoHelper.log().isDebugEnabled())
            DomainMojoHelper.log().debug("Annotation:" + desc + " processor:" + cp);
        // ?
        if (cp != null && !used.contains(cp)) {
            if (DomainMojoHelper.log().isDebugEnabled())
                DomainMojoHelper.log().debug("Processor " + cp + " processing...");
            used.add(cp);
            long l1 = System.currentTimeMillis();
            cp.process(file.toFile(), bytes, cn);
            long l2 = System.currentTimeMillis();
            if (DomainMojoHelper.log().isDebugEnabled())
                DomainMojoHelper.log().debug("Processor " + cp + " processed, cost:" + (l2 - l1));
        }
    }
}

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From source file:gemlite.maven.plugin.support.mapper.CreateMapperRegister.java

License:Apache License

/***
 * @param domain//from w w  w  . ja va 2s.co  m
 * @return
 * @throws IOException
 */

public synchronized void getIDomainRegistryClass(ClassNode domain) throws IOException {
    if (reg == null) {
        projectName = filterProjectName(projectName);
        String packagePath = DomainMapperHelper.defaultMpperPackage.replaceAll("\\.", "\\/");
        String internalName = packagePath + projectName + "$$$IDomainRegisterImpl";
        String path = projectPath + "/" + packagePath + "/";
        File f = new File(path);
        if (!f.exists())
            f.mkdirs();
        fileName = path + "/" + projectName + "$$$IDomainRegisterImpl.class";
        findTableNameAndRegionName(domain);
        reg = new ClassNode();
        reg.version = V1_7;
        reg.access = ACC_PUBLIC + ACC_SUPER;
        reg.name = internalName;
        reg.superName = "java/lang/Object";
        reg.interfaces.add(INTERFACE_NAME);
        reg.signature = null;
        addConstructFunction(reg);
        insn = implementInterface(reg);
    }
}

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