Example usage for org.objectweb.asm MethodVisitor visitCode

List of usage examples for org.objectweb.asm MethodVisitor visitCode

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitCode.

Prototype

public void visitCode()

Source Link

Document

Starts the visit of the method's code, if any (i.e.

Usage

From source file:com.googlecode.ddom.weaver.ext.ModelExtensionFactoryDelegateImplementation.java

License:Apache License

public void accept(ClassVisitor classVisitor) {
    String factoryName = Util
            .classNameToInternalName(modelExtensionClassInfo.getFactoryDelegateImplementationClassName());
    classVisitor.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, factoryName, null, "java/lang/Object", new String[] {
            Util.classNameToInternalName(implementationInfo.getFactoryDelegateInterfaceName()) });
    String className = Util.classNameToInternalName(modelExtensionClassInfo.getClassName());
    {//  w w  w  . jav a 2  s  .co m
        MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        if (mv != null) {
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
            mv.visitInsn(Opcodes.RETURN);
            Label l1 = new Label();
            mv.visitLabel(l1);
            mv.visitLocalVariable("this", "L" + className + ";", null, l0, l1, 0);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
    }
    for (ConstructorInfo constructor : implementationInfo.getConstructors()) {
        MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PUBLIC, "create",
                constructor.getFactoryDelegateMethodDescriptor(), constructor.getSignature(),
                constructor.getExceptions());
        if (mv != null) {
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            mv.visitTypeInsn(Opcodes.NEW, className);
            mv.visitInsn(Opcodes.DUP);
            Type[] argumentTypes = constructor.getArgumentTypes();
            for (int i = 0; i < argumentTypes.length; i++) {
                mv.visitVarInsn(argumentTypes[i].getOpcode(Opcodes.ILOAD), i + 1);
            }
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, className, "<init>", constructor.getDescriptor());
            mv.visitInsn(Opcodes.ARETURN);
            Label l1 = new Label();
            mv.visitLabel(l1);
            mv.visitLocalVariable("this", "L" + factoryName + ";", null, l0, l1, 0);
            for (int i = 0; i < argumentTypes.length; i++) {
                mv.visitLocalVariable("arg" + i, argumentTypes[i].getDescriptor(), null, l0, l1, i + 1);
            }
            mv.visitMaxs(argumentTypes.length + 2, argumentTypes.length + 1);
            mv.visitEnd();
        }
    }
    classVisitor.visitEnd();
}

From source file:com.googlecode.ddom.weaver.ext.ModelExtensionFactoryImplementation.java

License:Apache License

public void accept(ClassVisitor classVisitor) {
    // Note: the name chosen here must match what is expected in ExtensionFactoryLocator
    String name = Util.classNameToInternalName(implementationInfo.getFactoryInterface().getName() + "$$Impl");
    String factoryInterfaceName = Util
            .classNameToInternalName(implementationInfo.getFactoryInterface().getName());
    classVisitor.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, name, null, "java/lang/Object",
            new String[] { factoryInterfaceName });
    {// ww w  .  j a  va 2 s.co  m
        FieldVisitor fw = classVisitor.visitField(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_STATIC,
                "INSTANCE", "L" + factoryInterfaceName + ";", null, null);
        if (fw != null) {
            fw.visitEnd();
        }
    }
    {
        FieldVisitor fw = classVisitor.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_FINAL, "delegates",
                "Ljava/util/Map;", null, null);
        if (fw != null) {
            fw.visitEnd();
        }
    }
    {
        MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PRIVATE, "<init>", "()V", null, null);
        if (mv != null) {
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            // Call constructor from superclass
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
            // Create delegates map
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
            mv.visitInsn(Opcodes.DUP);
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V");
            mv.visitFieldInsn(Opcodes.PUTFIELD, name, "delegates", "Ljava/util/Map;");
            // Populate delegates map
            for (ModelExtensionInfo modelExtensionInfo : implementationInfo.getModelExtensions()) {
                for (ModelExtensionInterfaceInfo extensionInterface : modelExtensionInfo
                        .getExtensionInterfaces()) {
                    if (!extensionInterface.isAbstract()) {
                        // TODO: this is stupid; we should not recreate the info object here
                        ModelExtensionClassInfo modelExtensionClassInfo = new ModelExtensionClassInfo(
                                implementationInfo.getImplementation(), modelExtensionInfo.getRootInterface(),
                                extensionInterface);
                        String factoryDelegateImplName = Util.classNameToInternalName(
                                modelExtensionClassInfo.getFactoryDelegateImplementationClassName());
                        mv.visitVarInsn(Opcodes.ALOAD, 0);
                        mv.visitFieldInsn(Opcodes.GETFIELD, name, "delegates", "Ljava/util/Map;");
                        mv.visitLdcInsn(Type.getObjectType(Util.classNameToInternalName(
                                modelExtensionClassInfo.getExtensionInterface().getClassInfo().getName())));
                        mv.visitTypeInsn(Opcodes.NEW, factoryDelegateImplName);
                        mv.visitInsn(Opcodes.DUP);
                        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, factoryDelegateImplName, "<init>", "()V");
                        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                                "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
                        mv.visitInsn(Opcodes.POP);
                    }
                }
            }
            mv.visitInsn(Opcodes.RETURN);
            Label l1 = new Label();
            mv.visitLabel(l1);
            mv.visitLocalVariable("this", "L" + name + ";", null, l0, l1, 0);
            mv.visitMaxs(4, 1);
            mv.visitEnd();
        }
    }
    String factoryDelegateInterfaceName = Util
            .classNameToInternalName(implementationInfo.getFactoryDelegateInterfaceName());
    String getDelegateDesc = "(Ljava/lang/Class;)L" + factoryDelegateInterfaceName + ";";
    {
        MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PRIVATE, "getDelegate", getDelegateDesc, null,
                null);
        if (mv != null) {
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitFieldInsn(Opcodes.GETFIELD, name, "delegates", "Ljava/util/Map;");
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "get",
                    "(Ljava/lang/Object;)Ljava/lang/Object;");
            mv.visitTypeInsn(Opcodes.CHECKCAST, factoryDelegateInterfaceName);
            mv.visitInsn(Opcodes.ARETURN);
            Label l1 = new Label();
            mv.visitLabel(l1);
            mv.visitLocalVariable("this", "L" + name + ";", null, l0, l1, 0);
            mv.visitLocalVariable("extensionInterface", "Ljava/lang/Class;", null, l0, l1, 1);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
    }
    String implementationName = Util.classNameToInternalName(implementationInfo.getImplementation().getName());
    for (ConstructorInfo constructor : implementationInfo.getConstructors()) {
        Type[] constructorArgumentTypes = constructor.getArgumentTypes();
        Type[] argumentTypes = new Type[constructorArgumentTypes.length + 1];
        argumentTypes[0] = Type.getObjectType("java/lang/Class");
        System.arraycopy(constructorArgumentTypes, 0, argumentTypes, 1, constructorArgumentTypes.length);
        MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PUBLIC, "create",
                Type.getMethodDescriptor(Type.getObjectType(implementationName), argumentTypes), null, null);
        if (mv != null) {
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            Label l1 = new Label();
            mv.visitJumpInsn(Opcodes.IFNONNULL, l1);
            mv.visitTypeInsn(Opcodes.NEW, implementationName);
            mv.visitInsn(Opcodes.DUP);
            for (int i = 0; i < constructorArgumentTypes.length; i++) {
                mv.visitVarInsn(constructorArgumentTypes[i].getOpcode(Opcodes.ILOAD), i + 2);
            }
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, implementationName, "<init>",
                    constructor.getDescriptor());
            mv.visitInsn(Opcodes.ARETURN);
            mv.visitLabel(l1);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, name, "getDelegate", getDelegateDesc);
            for (int i = 0; i < constructorArgumentTypes.length; i++) {
                mv.visitVarInsn(constructorArgumentTypes[i].getOpcode(Opcodes.ILOAD), i + 2);
            }
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, factoryDelegateInterfaceName, "create",
                    constructor.getFactoryDelegateMethodDescriptor());
            mv.visitInsn(Opcodes.ARETURN);
            Label l3 = new Label();
            mv.visitLabel(l3);
            mv.visitLocalVariable("this", "L" + name + ";", null, l0, l3, 0);
            mv.visitLocalVariable("extensionInterface", "Ljava/lang/Class;", null, l0, l3, 1);
            for (int i = 0; i < constructorArgumentTypes.length; i++) {
                mv.visitLocalVariable("arg" + i, constructorArgumentTypes[i].getDescriptor(), null, l0, l3,
                        i + 2);
            }
            mv.visitMaxs(argumentTypes.length + 1, argumentTypes.length + 1);
            mv.visitEnd();
        }
    }
    {
        MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", null, null);
        if (mv != null) {
            mv.visitCode();
            mv.visitTypeInsn(Opcodes.NEW, name);
            mv.visitInsn(Opcodes.DUP);
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, name, "<init>", "()V");
            mv.visitFieldInsn(Opcodes.PUTSTATIC, name, "INSTANCE", "L" + factoryInterfaceName + ";");
            mv.visitInsn(Opcodes.RETURN);
            mv.visitMaxs(2, 0);
            mv.visitEnd();
        }
    }
    classVisitor.visitEnd();
}

From source file:com.googlecode.ddom.weaver.inject.InjectionAdapter.java

License:Apache License

@Override
public void visitEnd() {
    for (InjectableFieldInfo fieldInfo : injectionInfo.getInjectableFields()) {
        MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
                fieldInfo.getFactoryMethodName(), fieldInfo.getFactoryMethodDesc(), null, new String[0]);
        if (mv != null) {
            fieldInfo.getInjector().generateFactoryMethodCode(mv);
        }/* w ww  .  ja v a 2  s.co  m*/
    }
    if (injectionInfo.hasInjectableInstanceFields()) {
        MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PRIVATE, "inject$$instance", "()V", null, new String[0]);
        if (mv != null) {
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            for (InjectableFieldInfo fieldInfo : injectionInfo.getInjectableFields()) {
                if (!fieldInfo.isStatic()) {
                    mv.visitVarInsn(Opcodes.ALOAD, 0);
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, className, fieldInfo.getFactoryMethodName(),
                            fieldInfo.getFactoryMethodDesc());
                    mv.visitFieldInsn(Opcodes.PUTFIELD, className, fieldInfo.getFieldName(),
                            fieldInfo.getFieldDesc());
                }
            }
            mv.visitInsn(Opcodes.RETURN);
            Label l1 = new Label();
            mv.visitLabel(l1);
            mv.visitLocalVariable("this", "L" + className + ";", null, l0, l1, 0);
            mv.visitMaxs(2, 1);
            mv.visitEnd();
        }
    }
    if (injectionInfo.hasInjectableClassFields()) {
        MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
                hasClassInitializer ? "inject$$class" : "<clinit>", "()V", null, new String[0]);
        if (mv != null) {
            mv.visitCode();
            for (InjectableFieldInfo fieldInfo : injectionInfo.getInjectableFields()) {
                if (fieldInfo.isStatic()) {
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, className, fieldInfo.getFactoryMethodName(),
                            fieldInfo.getFactoryMethodDesc());
                    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, fieldInfo.getFieldName(),
                            fieldInfo.getFieldDesc());
                }
            }
            mv.visitInsn(Opcodes.RETURN);
            mv.visitMaxs(1, 0);
            mv.visitEnd();
        }
    }
    super.visitEnd();
}

From source file:com.googlecode.ddom.weaver.inject.PrototypeInjector.java

License:Apache License

public void generateFactoryMethodCode(MethodVisitor mv) {
    mv.visitCode();
    mv.visitTypeInsn(Opcodes.NEW, className);
    mv.visitInsn(Opcodes.DUP);//from  w  ww .  ja  va 2  s  .c  o  m
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, className, "<init>", "()V");
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(2, 0);
    mv.visitEnd();
}

From source file:com.googlecode.ddom.weaver.inject.SingletonInjector.java

License:Apache License

public void generateFactoryMethodCode(MethodVisitor mv) {
    mv.visitCode();
    mv.visitFieldInsn(Opcodes.GETSTATIC, singletonClassName, "INSTANCE", fieldDesc);
    mv.visitInsn(Opcodes.ARETURN);//  w w w.j a v a2 s.c o m
    mv.visitMaxs(1, 0);
    mv.visitEnd();
}

From source file:com.googlecode.gwt.test.internal.rewrite.RewriteSingleJsoImplDispatches.java

License:Apache License

/**
 * For regular Java objects that implement a SingleJsoImpl interface, write instance trampoline
 * dispatchers for mangled method names to the implementing method.
 *//*www.ja  va 2s . c  o m*/
private void writeTrampoline(String stubIntr) {
    /*
     * This is almost the same kind of trampoline as the ones generated in WriteJsoImpl, however
     * there are enough small differences between the semantics of the dispatches that would make
     * a common implementation far more awkward than the duplication of code.
     */
    for (String mangledName : toImplement(stubIntr)) {
        for (Method method : jsoData.getDeclarations(mangledName)) {

            Method toCall = new Method(method.getName(), method.getDescriptor());

            // Must not be final
            MethodVisitor mv = super.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC, mangledName,
                    method.getDescriptor(), null, null);
            if (mv != null) {
                mv.visitCode();

                /*
                 * It just so happens that the stack and local variable sizes are the same, but
                 * they're kept distinct to aid in clarity should the dispatch logic change.
                 *
                 * These start at 1 because we need to load "this" onto the stack
                 */
                int var = 1;
                int size = 1;

                // load this
                mv.visitVarInsn(Opcodes.ALOAD, 0);

                // then the rest of the arguments
                for (Type t : toCall.getArgumentTypes()) {
                    size += t.getSize();
                    mv.visitVarInsn(t.getOpcode(Opcodes.ILOAD), var);
                    var += t.getSize();
                }

                // Make sure there's enough room for the return value
                size = Math.max(size, toCall.getReturnType().getSize());

                mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, currentTypeName, toCall.getName(),
                        toCall.getDescriptor());
                mv.visitInsn(toCall.getReturnType().getOpcode(Opcodes.IRETURN));
                mv.visitMaxs(size, var);
                mv.visitEnd();
            }
        }
    }
}

From source file:com.heliosdecompiler.appifier.SystemHookDump.java

License:Apache License

public static byte[] dump() {

    ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;/*from  w w  w. j a v  a2 s.  co  m*/
    MethodVisitor mv;
    AnnotationVisitor av0;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "com/heliosdecompiler/appifier/SystemHook", null, "java/lang/Object",
            null);

    cw.visitInnerClass("java/lang/invoke/MethodHandles$Lookup", "java/lang/invoke/MethodHandles", "Lookup",
            ACC_PUBLIC + ACC_FINAL + ACC_STATIC);

    {
        fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "out", "Ljava/lang/ThreadLocal;",
                "Ljava/lang/ThreadLocal<Ljava/io/PrintStream;>;", null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PUBLIC + ACC_STATIC, "err", "Ljava/lang/ThreadLocal;",
                "Ljava/lang/ThreadLocal<Ljava/io/PrintStream;>;", null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PRIVATE + ACC_STATIC + ACC_SYNTHETIC, "lambda$static$1",
                "()Ljava/io/PrintStream;", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "err", "Ljava/io/PrintStream;");
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PRIVATE + ACC_STATIC + ACC_SYNTHETIC, "lambda$static$0",
                "()Ljava/io/PrintStream;", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
        mv.visitCode();
        mv.visitInvokeDynamicInsn("get", "()Ljava/util/function/Supplier;", new Handle(Opcodes.H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] { Type.getType("()Ljava/lang/Object;"),
                        new Handle(Opcodes.H_INVOKESTATIC, "com/heliosdecompiler/appifier/SystemHook",
                                "lambda$static$0", "()Ljava/io/PrintStream;"),
                        Type.getType("()Ljava/io/PrintStream;") });
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/ThreadLocal", "withInitial",
                "(Ljava/util/function/Supplier;)Ljava/lang/ThreadLocal;", false);
        mv.visitFieldInsn(PUTSTATIC, "com/heliosdecompiler/appifier/SystemHook", "out",
                "Ljava/lang/ThreadLocal;");
        mv.visitInvokeDynamicInsn("get", "()Ljava/util/function/Supplier;", new Handle(Opcodes.H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] { Type.getType("()Ljava/lang/Object;"),
                        new Handle(Opcodes.H_INVOKESTATIC, "com/heliosdecompiler/appifier/SystemHook",
                                "lambda$static$1", "()Ljava/io/PrintStream;"),
                        Type.getType("()Ljava/io/PrintStream;") });
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/ThreadLocal", "withInitial",
                "(Ljava/util/function/Supplier;)Ljava/lang/ThreadLocal;", false);
        mv.visitFieldInsn(PUTSTATIC, "com/heliosdecompiler/appifier/SystemHook", "err",
                "Ljava/lang/ThreadLocal;");
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

From source file:com.ibm.layout.GenArray1D.java

License:Open Source License

/**
 * Generate bytecodes for runtime class/* w w w. ja v a 2  s  . c o  m*/
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    FieldVisitor fv;
    final boolean itf = false;

    /* If user-defined array class is supplied, use it as superclass, and use its name instead of generating it */
    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object",
            new String[] { arrayInterfaceClassName });
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "elementSize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "arraySize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "length", "J", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJ)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "length", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitInsn(LMUL);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuffer");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("[");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ASTORE, 1);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 2);
        Label l0 = new Label();
        mv.visitJumpInsn(GOTO, l0);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn(" ");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                false);
        mv.visitMethodInsn(INVOKEINTERFACE, elementInterfaceClassName, "toString", "()Ljava/lang/String;",
                true);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 2);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l1);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitLdcInsn(" ]");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(5, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "getComponentType", "()Ljava/lang/Class;",
                "()Ljava/lang/Class<*>;", null);
        mv.visitCode();
        mv.visitLdcInsn(Type.getType("L" + elementInterfaceClassName + ";"));
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "getLength", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "at", "(J)L" + elementInterfaceClassName + ";", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, elementImplClassName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", itf);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "sizeof", "()J", itf);
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "range", "(JJ)Lcom/ibm/layout/Array1D;",
                "(JJ)Lcom/ibm/layout/Array1D<" + elementInterfaceClassName + ";>;", null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, arrayImplClassName);
        mv.visitInsn(DUP);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "elementSize", "J");
        mv.visitMethodInsn(INVOKESPECIAL, this.arrayImplClassName, "<init>", "(JJ)V", itf);
        mv.visitVarInsn(ASTORE, 5);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 6);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "put", "(JL" + elementInterfaceClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(3, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(J)Lcom/ibm/layout/Layout;", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(3, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "put", "(JLcom/ibm/layout/Layout;)V", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitTypeInsn(CHECKCAST, elementInterfaceClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "put", "(JL" + elementInterfaceClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false);

    cw.visitEnd();

    return cw.toByteArray();
}

From source file:com.ibm.layout.GenArray2D.java

License:Open Source License

/**
 * Generate bytecodes for runtime class/*from  ww  w  . jav  a 2s. c  o m*/
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {

    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv = null;
    FieldVisitor fv = null;
    final boolean itf = false;

    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object",
            new String[] { arrayInterfaceClassName });
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "dim1", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "dim2", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "elementSize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "arraySize", "J", null, null);
        fv.visitEnd();
    }

    {
        mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJJ)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "dim1", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "dim2", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(LMUL);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitInsn(LMUL);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "at", "(JJ)L" + elementInterfaceClassName + ";", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, elementImplClassName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", itf);
        mv.visitVarInsn(ASTORE, 5);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J");
        mv.visitInsn(LMUL);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitInsn(LADD);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "sizeof", "()J", itf);
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 6);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "put", "(JJL" + elementInterfaceClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 6);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(JJ)Lcom/ibm/layout/Layout;", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(5, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "put", "(JJLcom/ibm/layout/Layout;)V",
                null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitTypeInsn(CHECKCAST, elementInterfaceClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "put", "(JJL" + elementInterfaceClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(6, 6);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "dim1", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim1", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "dim2", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuffer");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("[");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ASTORE, 1);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 2);
        Label l0 = new Label();
        mv.visitJumpInsn(GOTO, l0);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 4);
        Label l2 = new Label();
        mv.visitJumpInsn(GOTO, l2);
        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { Opcodes.LONG }, 0, null);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn(" ");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(LLOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)Lcom/ibm/layout/Layout;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(LLOAD, 4);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 4);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(LLOAD, 4);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l3);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 2);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_CHOP, 1, null, 0, null);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim1", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l1);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitLdcInsn(" ]");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 6);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false);
    cw.visitEnd();

    return cw.toByteArray();
}

From source file:com.ibm.layout.GenLayout.java

License:Open Source License

/**
 * Generate bytecodes for runtime class/*from   ww  w. j a  va 2 s.c o m*/
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    FieldVisitor fv = null;
    MethodVisitor mv = null;
    ImplHelper.FieldDesc[] fieldDesc = ImplHelper.getFieldDesc(clazz);
    boolean isVariableLengthLayout = false;
    final boolean itf = false;

    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Long(getClassSize(fieldDesc)));
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }

    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, implClassName, null, "java/lang/Object",
            new String[] { interfaceClassName });

    {
        mv = cw.visitMethod(0, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    // getters
    for (int i = 0; i < fieldDesc.length; i++) {
        if (!ImplHelper.isPointerType(fieldDesc[i].rawType)) {
            if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
                mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null);
                mv.visitCode();
                mv.visitFieldInsn(GETSTATIC, implClassName, "unsafe", "Lsun/misc/Unsafe;");
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf);
                mv.visitLdcInsn(fieldDesc[i].offset);
                mv.visitInsn(LADD);

                mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                        "get" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig),
                        "(Ljava/lang/Object;J)" + fieldDesc[i].sig, itf);
                if (fieldDesc[i].sig == "D") {
                    mv.visitInsn(DRETURN);
                } else if (fieldDesc[i].sig == "J") {
                    mv.visitInsn(LRETURN);
                } else if (fieldDesc[i].sig == "F") {
                    mv.visitInsn(FRETURN);
                } else {
                    mv.visitInsn(IRETURN);
                }
                mv.visitMaxs(6, 1);
                mv.visitEnd();
            } else if (fieldDesc[i].repeatCountMember != null) {
                {
                    isVariableLengthLayout = true;
                    ImplHelper.FieldDesc repeatCountField = ImplHelper.findField(fieldDesc[i].repeatCountMember,
                            fieldDesc);
                    mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                            "()" + fieldDesc[i].elementImpl, null);
                    mv.visitCode();
                    if ("" != fieldDesc[i].elementImpl) {
                        mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
                        mv.visitInsn(DUP);
                        mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", false);
                        mv.visitVarInsn(ASTORE, 1);
                        mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                        mv.visitInsn(DUP);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].repeatCountMember,
                                "()" + repeatCountField.sig, false);
                        if (!repeatCountField.sig.equals("J")) {
                            mv.visitInsn(I2L);
                        }
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", false);
                        mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", false);
                        mv.visitVarInsn(ASTORE, 2);
                        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                        mv.visitInsn(DUP);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                        mv.visitLdcInsn(fieldDesc[i].offset);
                        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                                "(Lcom/ibm/layout/Location;J)V", false);
                        mv.visitVarInsn(ASTORE, 3);
                        mv.visitVarInsn(ALOAD, 2);
                        mv.visitVarInsn(ALOAD, 3);
                        mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/VLArray", "bindLocation",
                                "(Lcom/ibm/layout/Location;)V", true);
                        mv.visitVarInsn(ALOAD, 2);
                        mv.visitInsn(ARETURN);
                        mv.visitMaxs(6, 4);
                        mv.visitEnd();
                    } else {
                        throw new RuntimeException("primitive VLAs are unsupported");
                    }
                    {
                        mv = cw.visitMethod(ACC_PUBLIC, "bindLocation",
                                "(Lcom/ibm/layout/Location;" + repeatCountField.sig + ")V", null,
                                new String[] { "java/lang/UnsupportedOperationException" });
                        mv.visitCode();
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, "sizeof", "()J", false);
                        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "checkDataFits", "(J)Z",
                                false);
                        Label l0 = new Label();
                        mv.visitJumpInsn(IFEQ, l0);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitFieldInsn(PUTFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                        mv.visitLabel(l0);
                        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                        mv.visitVarInsn(ALOAD, 0);
                        if (repeatCountField.sig.equals("J")) {
                            mv.visitVarInsn(LLOAD, 2);
                        } else {
                            mv.visitVarInsn(ILOAD, 2);
                        }
                        mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].repeatCountMember,
                                "(" + repeatCountField.sig + ")V", false);
                        mv.visitInsn(RETURN);
                        mv.visitMaxs(3, 3);
                        mv.visitEnd();
                    }
                }
            } else if (fieldDesc[i].dims == null) {
                /* nested field */
                mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null);
                mv.visitCode();
                mv.visitTypeInsn(NEW, ImplHelper.getImplClassName(fieldDesc[i].rawType));
                mv.visitInsn(DUP);
                mv.visitMethodInsn(INVOKESPECIAL, ImplHelper.getImplClassName(fieldDesc[i].rawType), "<init>",
                        "()V", itf);
                mv.visitVarInsn(ASTORE, 1);
                mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                mv.visitInsn(DUP);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                mv.visitLdcInsn(fieldDesc[i].offset);
                mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                        "(Lcom/ibm/layout/Location;J)V", itf);
                mv.visitVarInsn(ASTORE, 2);
                mv.visitVarInsn(ALOAD, 1);
                mv.visitVarInsn(ALOAD, 2);
                mv.visitMethodInsn(INVOKEVIRTUAL, ImplHelper.getImplClassName(fieldDesc[i].rawType),
                        "bindLocation", "(Lcom/ibm/layout/Location;)V", itf);
                mv.visitVarInsn(ALOAD, 1);
                mv.visitInsn(ARETURN);
                mv.visitMaxs(5, 3);
                mv.visitEnd();
            } else if (fieldDesc[i].dims.length == 1) {
                mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                        "()" + fieldDesc[i].sigGeneric, null);
                mv.visitCode();
                if ("" != fieldDesc[i].elementImpl) {
                    mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
                    mv.visitInsn(DUP);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 3);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitVarInsn(ALOAD, 3);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(6, 4);
                    mv.visitEnd();
                } else {
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(J)V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(5, 3);
                    mv.visitEnd();
                }
            } else if (fieldDesc[i].dims.length == 2) {
                if ("" != fieldDesc[i].elementImpl) {
                    mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                            "()" + fieldDesc[i].sigGeneric, null);
                    mv.visitCode();
                    mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
                    mv.visitInsn(DUP);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitLdcInsn(fieldDesc[i].dims[1]);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJJ)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 3);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitVarInsn(ALOAD, 3);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(8, 4);
                    mv.visitEnd();
                } else {
                    mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                            "()" + fieldDesc[i].sigGeneric, null);
                    mv.visitCode();
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitLdcInsn(fieldDesc[i].dims[1]);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(6, 3);
                    mv.visitEnd();
                }
            }
        }
    }

    // setters
    for (int i = 0; i < fieldDesc.length; i++) {
        if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
            mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "(" + fieldDesc[i].sig + ")V", null, null);
            mv.visitCode();
            mv.visitFieldInsn(GETSTATIC, implClassName, "unsafe", "Lsun/misc/Unsafe;");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf);
            mv.visitLdcInsn(fieldDesc[i].offset);
            mv.visitInsn(LADD);
            if (fieldDesc[i].sig == "D") {
                mv.visitVarInsn(DLOAD, 1);
            } else if (fieldDesc[i].sig == "J") {
                mv.visitVarInsn(LLOAD, 1);
            } else if (fieldDesc[i].sig == "F") {
                mv.visitVarInsn(FLOAD, 1);
            } else {
                mv.visitVarInsn(ILOAD, 1);
            }
            mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                    "put" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig),
                    "(Ljava/lang/Object;J" + fieldDesc[i].sig + ")V", itf);
            mv.visitInsn(RETURN);
            mv.visitMaxs(6, 2);
            mv.visitEnd();
        }
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "copyFrom", "(L" + implClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, implClassName, "copyFrom", "(Lcom/ibm/layout/Layout;)V", itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("(");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        for (int i = 0; i < fieldDesc.length; i++) {
            if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
                mv.visitLdcInsn(fieldDesc[i].name + ": ");
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                        "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                        false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                        "(" + ImplHelper.getByteCodeSig(fieldDesc[i].sig) + ")Ljava/lang/StringBuilder;",
                        false);
                if (i < (fieldDesc.length - 1)) {
                    mv.visitLdcInsn(", ");
                    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                            "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
                }
            } else {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                        false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;",
                        false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                        "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
            }
        }
        mv.visitLdcInsn(")");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(3, 1);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, implClassName, isVariableLengthLayout);
    ImplHelper.getLayoutImpl(cw, mv, implClassName);

    cw.visitEnd();

    return cw.toByteArray();
}