Java Code Examples for org.objectweb.asm.ClassWriter#COMPUTE_MAXS

The following examples show how to use org.objectweb.asm.ClassWriter#COMPUTE_MAXS . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: HotSwapTool.java    From HotswapAgent with GNU General Public License v2.0 6 votes vote down vote up 
private static void loadAdaptedClass(File file,
        Map<String, String> typeMappnigs, Map<Class<?>, byte[]> result)
        throws IOException, ClassNotFoundException {

    ClassWriter writer = new ClassWriter(
            ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
    TestClassAdapter adapter = new TestClassAdapter(writer, typeMappnigs);

    InputStream in = new FileInputStream(file);
    try {
        new ClassReader(in).accept(adapter, ClassReader.EXPAND_FRAMES);
    } finally {
        try {
            in.close();
        } catch (IOException e) {
            // Ignore.
        }
    }
    byte[] bytes = writer.toByteArray();
    String className = adapter.getClassName().replace('/', '.');
    result.put(Class.forName(className), bytes); // FIXME: ClassLoader...
}
Example 2
Source File: PatchGuiIngameForge.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiIngameForge (%s)", Names.guiIngameForge.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 3
Source File: PatchGuiEditSign.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiEditSign (%s)", Names.guiEditSign.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 4
Source File: PatchGuiEditSign.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiEditSign (%s)", Names.guiEditSign.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 5
Source File: PatchGuiIngameForge.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiIngameForge (%s)", Names.guiIngameForge.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 6
Source File: PatchGuiOptions.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiOptions (%s)", Names.guiOptions.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 7
Source File: PatchGuiOptions.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiOptions (%s)", Names.guiOptions.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 8
Source File: MainBuildTask.java    From Launcher with GNU General Public License v3.0 5 votes vote down vote up 
default byte[] transform(byte[] input, String classname, BuildContext context) {
    ClassReader reader = new ClassReader(input);
    ClassNode cn = new ClassNode();
    reader.accept(cn, 0);
    transform(cn, classname, context);
    SafeClassWriter writer = new SafeClassWriter(context.task.reader, ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
    cn.accept(writer);
    return writer.toByteArray();
}
Example 9
Source File: AdviceGenerator.java    From glowroot with Apache License 2.0 5 votes vote down vote up 
private LazyDefinedClass generate() {
    LazyDefinedClass methodMetaClass = null;
    if (methodMetaInternalName != null) {
        methodMetaClass = generateMethodMetaClass(config);
    }
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS + ClassWriter.COMPUTE_FRAMES);
    String[] interfaces = null;
    if (!config.enabledProperty().isEmpty() || !config.traceEntryEnabledProperty().isEmpty()) {
        interfaces = new String[] {"org/glowroot/agent/plugin/api/config/ConfigListener"};
    }
    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, adviceInternalName, null, "java/lang/Object",
            interfaces);
    addClassAnnotation(cw);
    addStaticFields(cw);
    addStaticInitializer(cw);
    boolean checkNotInTransaction = config.isTransaction()
            && config.alreadyInTransactionBehavior() == AlreadyInTransactionBehavior.DO_NOTHING;
    boolean checkPropertyNotEnabled = pluginId != null && !config.enabledProperty().isEmpty();
    addIsEnabledMethodIfNeeded(cw, checkNotInTransaction, checkPropertyNotEnabled);
    if (config.isTraceEntryOrGreater()) {
        // methodMetaInternalName is non-null when entry or greater
        checkNotNull(methodMetaInternalName);
        addOnBeforeMethod(cw);
        addOnThrowMethod(cw);
        addOnReturnMethod(cw);
    } else if (config.captureKind() == CaptureKind.TIMER) {
        addOnBeforeMethodTimerOnly(cw);
        addOnAfterMethodTimerOnly(cw);
    } else {
        addOnBeforeMethodOther(cw);
    }
    cw.visitEnd();
    ImmutableLazyDefinedClass.Builder builder = ImmutableLazyDefinedClass.builder()
            .type(Type.getObjectType(adviceInternalName))
            .bytes(cw.toByteArray());
    if (methodMetaClass != null) {
        builder.addDependencies(methodMetaClass);
    }
    return builder.build();
}
Example 10
Source File: PatchGuiTextfield.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiTextfield (%s)", Names.guiTextfield.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 11
Source File: PatchGuiGameOver.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiGameOver (%s)", Names.guiGameOver.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 12
Source File: PatchGuiDisconnected.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiDisconnected (%s)", Names.guiDisconnected.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 13
Source File: PatchGuiEditSign.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiEditSign (%s)", Names.guiEditSign.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 14
Source File: PatchGuiIngameForge.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiIngameForge (%s)", Names.guiIngameForge.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 15
Source File: PatchMinecraft.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("Minecraft (%s)", Names.minecraft.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 16
Source File: PatchGuiTextfield.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiTextfield (%s)", Names.guiTextfield.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 17
Source File: PatchMinecraft.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("Minecraft (%s)", Names.minecraft.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 18
Source File: PatchGuiEditSign.java    From The-5zig-Mod with MIT License 5 votes vote down vote up 
@Override
public byte[] transform(String s, String s1, byte[] bytes) {
	LogUtil.startClass("GuiEditSign (%s)", Names.guiEditSign.getName());

	ClassReader reader = new ClassReader(bytes);
	ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_MAXS);
	ClassPatcher visitor = new ClassPatcher(writer);
	reader.accept(visitor, 0);
	LogUtil.endClass();
	return writer.toByteArray();
}
Example 19
Source File: TransformerInvokerGenerator.java    From Diorite with MIT License 4 votes vote down vote up 
@Override
public int mergeWriter(int flags)
{
    return flags | ClassWriter.COMPUTE_MAXS;
}
Example 20
Source File: AsmTest.java    From atlas with Apache License 2.0 4 votes vote down vote up 
@Test
public void test() throws Throwable {

    ClassReader cr = new ClassReader(Config.class.getName());
    ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS);
    ClassVisitor cv = new MethodChangeClassAdapter(cw);
    cr.accept(cv, Opcodes.ASM5);

    //Add a new method
    MethodVisitor mw = cw.visitMethod(ACC_PUBLIC + ACC_STATIC,
                                      "add",
                                      "([Ljava/lang/String;)V",
                                      null,
                                      null);

    // pushes the 'out' field (of type PrintStream) of the System class
    mw.visitFieldInsn(GETSTATIC,
                      "java/lang/System",
                      "out",
                      "Ljava/io/PrintStream;");
    // pushes the "Hello World!" String constant
    mw.visitLdcInsn("this is add method print!");
    // invokes the 'println' method (defined in the PrintStream class)
    mw.visitMethodInsn(INVOKEVIRTUAL,
                       "java/io/PrintStream",
                       "println",
                       "(Ljava/lang/String;)V");
    mw.visitInsn(RETURN);
    // this code uses a maximum of two stack elements and two local
    // variables
    mw.visitMaxs(0, 0);
    mw.visitEnd();


    //Type.getDescriptor(AdviceFlowOuterHolder.class)
    FieldVisitor fv = cw.visitField(ACC_PUBLIC + ACC_STATIC + ACC_FINAL,
                                     "age",
                                    Type.INT_TYPE.toString(),
                                     null,
                                     1);
    fv.visitEnd();

    FieldVisitor fv2 = cw.visitField(ACC_PUBLIC + ACC_STATIC + ACC_FINAL,
                                    "name2",
                                    Type.getDescriptor(String.class),
                                    null,
                                    "name2");
    fv2.visitEnd();


    ModifyClassVisiter cv2 = new ModifyClassVisiter(Opcodes.ASM5);
    cv2.addRemoveField("name");
    cr.accept(cv2, Opcodes.ASM5);

    FieldVisitor fv3 = cw.visitField(ACC_PUBLIC + ACC_STATIC + ACC_FINAL,
                                     "name",
                                     Type.getDescriptor(String.class),
                                     null,
                                     "name");
    fv3.visitEnd();




    byte[] code = cw.toByteArray();
    File file = new File("Config.class");
    System.out.println(file.getAbsolutePath());
    FileOutputStream fos = new FileOutputStream(file);
    fos.write(code);
    fos.close();

}