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/*
 * Javassist, a Java-bytecode translator toolkit.
 * Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License.  Alternatively, the contents of this file may be used under
 * the terms of the GNU Lesser General Public License Version 2.1 or later,
 * or the Apache License Version 2.0.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 */

package com.feilong.lib.javassist;

import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import java.util.Set;

import com.feilong.lib.javassist.bytecode.AccessFlag;
import com.feilong.lib.javassist.bytecode.AnnotationsAttribute;
import com.feilong.lib.javassist.bytecode.AttributeInfo;
import com.feilong.lib.javassist.bytecode.BadBytecode;
import com.feilong.lib.javassist.bytecode.Bytecode;
import com.feilong.lib.javassist.bytecode.ClassFile;
import com.feilong.lib.javassist.bytecode.CodeAttribute;
import com.feilong.lib.javassist.bytecode.CodeIterator;
import com.feilong.lib.javassist.bytecode.ConstPool;
import com.feilong.lib.javassist.bytecode.ConstantAttribute;
import com.feilong.lib.javassist.bytecode.Descriptor;
import com.feilong.lib.javassist.bytecode.EnclosingMethodAttribute;
import com.feilong.lib.javassist.bytecode.FieldInfo;
import com.feilong.lib.javassist.bytecode.InnerClassesAttribute;
import com.feilong.lib.javassist.bytecode.MethodInfo;
import com.feilong.lib.javassist.bytecode.Opcode;
import com.feilong.lib.javassist.bytecode.ParameterAnnotationsAttribute;
import com.feilong.lib.javassist.bytecode.SignatureAttribute;
import com.feilong.lib.javassist.bytecode.annotation.Annotation;
import com.feilong.lib.javassist.compiler.AccessorMaker;
import com.feilong.lib.javassist.compiler.CompileError;
import com.feilong.lib.javassist.compiler.Javac;
import com.feilong.lib.javassist.expr.ExprEditor;

/**
 * Class types.
 */
class CtClassType extends CtClass{

    ClassPool                         classPool;

    boolean                           wasChanged;

    private boolean                   wasFrozen;

    boolean                           wasPruned;

    boolean                           gcConstPool;                        // if true, the constant pool entries will be garbage collected. 

    ClassFile                         classfile;

    byte[]                            rawClassfile;                       // backup storage

    private Reference memberCache;

    private AccessorMaker             accessors;

    private FieldInitLink             fieldInitializers;

    private Map     hiddenMethods;                      // must be synchronous

    private int                       uniqueNumberSeed;

    private boolean                   doPruning     = ClassPool.doPruning;

    private int                       getCount;

    private static final int          GET_THRESHOLD = 2;                  // see compress()

    CtClassType(String name, ClassPool cp){
        super(name);
        classPool = cp;
        wasChanged = wasFrozen = wasPruned = gcConstPool = false;
        classfile = null;
        rawClassfile = null;
        memberCache = null;
        accessors = null;
        fieldInitializers = null;
        hiddenMethods = null;
        uniqueNumberSeed = 0;
        getCount = 0;
    }

    CtClassType(InputStream ins, ClassPool cp) throws IOException{
        this((String) null, cp);
        classfile = new ClassFile(new DataInputStream(ins));
        qualifiedName = classfile.getName();
    }

    CtClassType(ClassFile cf, ClassPool cp){
        this((String) null, cp);
        classfile = cf;
        qualifiedName = classfile.getName();
    }

    @Override
    protected void extendToString(StringBuffer buffer){
        if (wasChanged){
            buffer.append("changed ");
        }

        if (wasFrozen){
            buffer.append("frozen ");
        }

        if (wasPruned){
            buffer.append("pruned ");
        }

        buffer.append(Modifier.toString(getModifiers()));
        buffer.append(" class ");
        buffer.append(getName());

        try{
            CtClass ext = getSuperclass();
            if (ext != null){
                String name = ext.getName();
                if (!name.equals("java.lang.Object")){
                    buffer.append(" extends " + ext.getName());
                }
            }
        }catch (NotFoundException e){
            buffer.append(" extends ??");
        }

        try{
            CtClass[] intf = getInterfaces();
            if (intf.length > 0){
                buffer.append(" implements ");
            }

            for (CtClass element : intf){
                buffer.append(element.getName());
                buffer.append(", ");
            }
        }catch (NotFoundException e){
            buffer.append(" extends ??");
        }

        CtMember.Cache memCache = getMembers();
        exToString(buffer, " fields=", memCache.fieldHead(), memCache.lastField());
        exToString(buffer, " constructors=", memCache.consHead(), memCache.lastCons());
        exToString(buffer, " methods=", memCache.methodHead(), memCache.lastMethod());
    }

    private void exToString(StringBuffer buffer,String msg,CtMember head,CtMember tail){
        buffer.append(msg);
        while (head != tail){
            head = head.next();
            buffer.append(head);
            buffer.append(", ");
        }
    }

    @Override
    public AccessorMaker getAccessorMaker(){
        if (accessors == null){
            accessors = new AccessorMaker(this);
        }

        return accessors;
    }

    @Override
    public ClassFile getClassFile2(){
        return getClassFile3(true);
    }

    public ClassFile getClassFile3(boolean doCompress){
        ClassFile cfile = classfile;
        if (cfile != null){
            return cfile;
        }

        if (doCompress){
            classPool.compress();
        }

        if (rawClassfile != null){
            try{
                ClassFile cf = new ClassFile(new DataInputStream(new ByteArrayInputStream(rawClassfile)));
                rawClassfile = null;
                getCount = GET_THRESHOLD;
                return setClassFile(cf);
            }catch (IOException e){
                throw new RuntimeException(e.toString(), e);
            }
        }

        InputStream fin = null;
        try{
            fin = classPool.openClassfile(getName());
            if (fin == null){
                throw new NotFoundException(getName());
            }

            fin = new BufferedInputStream(fin);
            ClassFile cf = new ClassFile(new DataInputStream(fin));
            if (!cf.getName().equals(qualifiedName)){
                throw new RuntimeException(
                                "cannot find " + qualifiedName + ": " + cf.getName() + " found in " + qualifiedName.replace('.', '/')
                                                + ".class");
            }

            return setClassFile(cf);
        }catch (NotFoundException e){
            throw new RuntimeException(e.toString(), e);
        }catch (IOException e){
            throw new RuntimeException(e.toString(), e);
        }finally{
            if (fin != null){
                try{
                    fin.close();
                }catch (IOException e){}
            }
        }
    }

    /*
     * Inherited from CtClass. Called by get() in ClassPool.
     *
     * @see javassist.CtClass#incGetCounter()
     * 
     * @see #toBytecode(DataOutputStream)
     */
    @Override
    final void incGetCounter(){
        ++getCount;
    }

    /**
     * Invoked from ClassPool#compress().
     * It releases the class files that have not been recently used
     * if they are unmodified.
     */
    @Override
    void compress(){
        if (getCount < GET_THRESHOLD){
            if (!isModified() && ClassPool.releaseUnmodifiedClassFile){
                removeClassFile();
            }else if (isFrozen() && !wasPruned){
                saveClassFile();
            }
        }

        getCount = 0;
    }

    /**
     * Converts a ClassFile object into a byte array
     * for saving memory space.
     */
    private synchronized void saveClassFile(){
        /*
         * getMembers() and removeClassFile() are also synchronized.
         */
        if (classfile == null || hasMemberCache() != null){
            return;
        }

        ByteArrayOutputStream barray = new ByteArrayOutputStream();
        DataOutputStream out = new DataOutputStream(barray);
        try{
            classfile.write(out);
            barray.close();
            rawClassfile = barray.toByteArray();
            classfile = null;
        }catch (IOException e){}
    }

    private synchronized void removeClassFile(){
        if (classfile != null && !isModified() && hasMemberCache() == null){
            classfile = null;
        }
    }

    /**
     * Updates {@code classfile} if it is null.
     */
    private synchronized ClassFile setClassFile(ClassFile cf){
        if (classfile == null){
            classfile = cf;
        }

        return classfile;
    }

    @Override
    public ClassPool getClassPool(){
        return classPool;
    }

    void setClassPool(ClassPool cp){
        classPool = cp;
    }

    @Override
    public URL getURL() throws NotFoundException{
        URL url = classPool.find(getName());
        if (url == null){
            throw new NotFoundException(getName());
        }
        return url;
    }

    @Override
    public boolean isModified(){
        return wasChanged;
    }

    @Override
    public boolean isFrozen(){
        return wasFrozen;
    }

    @Override
    public void freeze(){
        wasFrozen = true;
    }

    @Override
    void checkModify() throws RuntimeException{
        if (isFrozen()){
            String msg = getName() + " class is frozen";
            if (wasPruned){
                msg += " and pruned";
            }

            throw new RuntimeException(msg);
        }

        wasChanged = true;
    }

    @Override
    public void defrost(){
        checkPruned("defrost");
        wasFrozen = false;
    }

    @Override
    public boolean subtypeOf(CtClass clazz) throws NotFoundException{
        int i;
        String cname = clazz.getName();
        if (this == clazz || getName().equals(cname)){
            return true;
        }

        ClassFile file = getClassFile2();
        String supername = file.getSuperclass();
        if (supername != null && supername.equals(cname)){
            return true;
        }

        String[] ifs = file.getInterfaces();
        int num = ifs.length;
        for (i = 0; i < num; ++i){
            if (ifs[i].equals(cname)){
                return true;
            }
        }

        if (supername != null && classPool.get(supername).subtypeOf(clazz)){
            return true;
        }

        for (i = 0; i < num; ++i){
            if (classPool.get(ifs[i]).subtypeOf(clazz)){
                return true;
            }
        }

        return false;
    }

    @Override
    public void setName(String name) throws RuntimeException{
        String oldname = getName();
        if (name.equals(oldname)){
            return;
        }

        // check this in advance although classNameChanged() below does.
        classPool.checkNotFrozen(name);
        ClassFile cf = getClassFile2();
        super.setName(name);
        cf.setName(name);
        nameReplaced();
        classPool.classNameChanged(oldname, this);
    }

    @Override
    public String getGenericSignature(){
        SignatureAttribute sa = (SignatureAttribute) getClassFile2().getAttribute(SignatureAttribute.tag);
        return sa == null ? null : sa.getSignature();
    }

    @Override
    public void setGenericSignature(String sig){
        ClassFile cf = getClassFile();
        SignatureAttribute sa = new SignatureAttribute(cf.getConstPool(), sig);
        cf.addAttribute(sa);
    }

    @Override
    public void replaceClassName(ClassMap classnames) throws RuntimeException{
        String oldClassName = getName();
        String newClassName = classnames.get(Descriptor.toJvmName(oldClassName));
        if (newClassName != null){
            newClassName = Descriptor.toJavaName(newClassName);
            // check this in advance although classNameChanged() below does.
            classPool.checkNotFrozen(newClassName);
        }

        super.replaceClassName(classnames);
        ClassFile cf = getClassFile2();
        cf.renameClass(classnames);
        nameReplaced();

        if (newClassName != null){
            super.setName(newClassName);
            classPool.classNameChanged(oldClassName, this);
        }
    }

    @Override
    public void replaceClassName(String oldname,String newname) throws RuntimeException{
        String thisname = getName();
        if (thisname.equals(oldname)){
            setName(newname);
        }else{
            super.replaceClassName(oldname, newname);
            getClassFile2().renameClass(oldname, newname);
            nameReplaced();
        }
    }

    @Override
    public boolean isInterface(){
        return Modifier.isInterface(getModifiers());
    }

    @Override
    public boolean isAnnotation(){
        return Modifier.isAnnotation(getModifiers());
    }

    @Override
    public boolean isEnum(){
        return Modifier.isEnum(getModifiers());
    }

    @Override
    public int getModifiers(){
        ClassFile cf = getClassFile2();
        int acc = cf.getAccessFlags();
        acc = AccessFlag.clear(acc, AccessFlag.SUPER);
        int inner = cf.getInnerAccessFlags();
        if (inner != -1){
            if ((inner & AccessFlag.STATIC) != 0){
                acc |= AccessFlag.STATIC;
            }
            if ((inner & AccessFlag.PUBLIC) != 0){
                acc |= AccessFlag.PUBLIC;
            }else{
                acc &= ~AccessFlag.PUBLIC; //clear PUBLIC
                if ((inner & AccessFlag.PROTECTED) != 0){
                    acc |= AccessFlag.PROTECTED;
                }else if ((inner & AccessFlag.PRIVATE) != 0){
                    acc |= AccessFlag.PRIVATE;
                }
            }
        }
        return AccessFlag.toModifier(acc);
    }

    @Override
    public CtClass[] getNestedClasses() throws NotFoundException{
        ClassFile cf = getClassFile2();
        InnerClassesAttribute ica = (InnerClassesAttribute) cf.getAttribute(InnerClassesAttribute.tag);
        if (ica == null){
            return new CtClass[0];
        }

        String thisName = cf.getName() + "$";
        int n = ica.tableLength();
        List list = new ArrayList<>(n);
        for (int i = 0; i < n; i++){
            String name = ica.innerClass(i);
            if (name != null){
                if (name.startsWith(thisName)){
                    // if it is an immediate nested class
                    if (name.lastIndexOf('$') < thisName.length()){
                        list.add(classPool.get(name));
                    }
                }
            }
        }

        return list.toArray(new CtClass[list.size()]);
    }

    @Override
    public void setModifiers(int mod){
        checkModify();
        updateInnerEntry(mod, getName(), this, true);
        ClassFile cf = getClassFile2();
        cf.setAccessFlags(AccessFlag.of(mod & ~Modifier.STATIC));
    }

    private static void updateInnerEntry(int newMod,String name,CtClass clazz,boolean outer){
        ClassFile cf = clazz.getClassFile2();
        InnerClassesAttribute ica = (InnerClassesAttribute) cf.getAttribute(InnerClassesAttribute.tag);
        if (ica != null){
            // If the class is a static inner class, its modifier
            // does not contain the static bit.  Its inner class attribute
            // contains the static bit.
            int mod = newMod & ~Modifier.STATIC;
            int i = ica.find(name);
            if (i >= 0){
                int isStatic = ica.accessFlags(i) & AccessFlag.STATIC;
                if (isStatic != 0 || !Modifier.isStatic(newMod)){
                    clazz.checkModify();
                    ica.setAccessFlags(i, AccessFlag.of(mod) | isStatic);
                    String outName = ica.outerClass(i);
                    if (outName != null && outer){
                        try{
                            CtClass parent = clazz.getClassPool().get(outName);
                            updateInnerEntry(mod, name, parent, false);
                        }catch (NotFoundException e){
                            throw new RuntimeException("cannot find the declaring class: " + outName);
                        }
                    }

                    return;
                }
            }
        }

        if (Modifier.isStatic(newMod)){
            throw new RuntimeException("cannot change " + Descriptor.toJavaName(name) + " into a static class");
        }
    }

    @Override
    public boolean hasAnnotation(String annotationName){
        ClassFile cf = getClassFile2();
        AnnotationsAttribute ainfo = (AnnotationsAttribute) cf.getAttribute(AnnotationsAttribute.invisibleTag);
        AnnotationsAttribute ainfo2 = (AnnotationsAttribute) cf.getAttribute(AnnotationsAttribute.visibleTag);
        return hasAnnotationType(annotationName, getClassPool(), ainfo, ainfo2);
    }

    /**
     * @deprecated
     */
    @Deprecated
    static boolean hasAnnotationType(Class clz,ClassPool cp,AnnotationsAttribute a1,AnnotationsAttribute a2){
        return hasAnnotationType(clz.getName(), cp, a1, a2);
    }

    static boolean hasAnnotationType(String annotationTypeName,ClassPool cp,AnnotationsAttribute a1,AnnotationsAttribute a2){
        Annotation[] anno1, anno2;

        if (a1 == null){
            anno1 = null;
        }else{
            anno1 = a1.getAnnotations();
        }

        if (a2 == null){
            anno2 = null;
        }else{
            anno2 = a2.getAnnotations();
        }

        if (anno1 != null){
            for (Annotation element : anno1){
                if (element.getTypeName().equals(annotationTypeName)){
                    return true;
                }
            }
        }

        if (anno2 != null){
            for (Annotation element : anno2){
                if (element.getTypeName().equals(annotationTypeName)){
                    return true;
                }
            }
        }

        return false;
    }

    @Override
    public Object getAnnotation(Class clz) throws ClassNotFoundException{
        ClassFile cf = getClassFile2();
        AnnotationsAttribute ainfo = (AnnotationsAttribute) cf.getAttribute(AnnotationsAttribute.invisibleTag);
        AnnotationsAttribute ainfo2 = (AnnotationsAttribute) cf.getAttribute(AnnotationsAttribute.visibleTag);
        return getAnnotationType(clz, getClassPool(), ainfo, ainfo2);
    }

    static Object getAnnotationType(Class clz,ClassPool cp,AnnotationsAttribute a1,AnnotationsAttribute a2)
                    throws ClassNotFoundException{
        Annotation[] anno1, anno2;

        if (a1 == null){
            anno1 = null;
        }else{
            anno1 = a1.getAnnotations();
        }

        if (a2 == null){
            anno2 = null;
        }else{
            anno2 = a2.getAnnotations();
        }

        String typeName = clz.getName();
        if (anno1 != null){
            for (Annotation element : anno1){
                if (element.getTypeName().equals(typeName)){
                    return toAnnoType(element, cp);
                }
            }
        }

        if (anno2 != null){
            for (Annotation element : anno2){
                if (element.getTypeName().equals(typeName)){
                    return toAnnoType(element, cp);
                }
            }
        }

        return null;
    }

    @Override
    public Object[] getAnnotations() throws ClassNotFoundException{
        return getAnnotations(false);
    }

    @Override
    public Object[] getAvailableAnnotations(){
        try{
            return getAnnotations(true);
        }catch (ClassNotFoundException e){
            throw new RuntimeException("Unexpected exception ", e);
        }
    }

    private Object[] getAnnotations(boolean ignoreNotFound) throws ClassNotFoundException{
        ClassFile cf = getClassFile2();
        AnnotationsAttribute ainfo = (AnnotationsAttribute) cf.getAttribute(AnnotationsAttribute.invisibleTag);
        AnnotationsAttribute ainfo2 = (AnnotationsAttribute) cf.getAttribute(AnnotationsAttribute.visibleTag);
        return toAnnotationType(ignoreNotFound, getClassPool(), ainfo, ainfo2);
    }

    static Object[] toAnnotationType(boolean ignoreNotFound,ClassPool cp,AnnotationsAttribute a1,AnnotationsAttribute a2)
                    throws ClassNotFoundException{
        Annotation[] anno1, anno2;
        int size1, size2;

        if (a1 == null){
            anno1 = null;
            size1 = 0;
        }else{
            anno1 = a1.getAnnotations();
            size1 = anno1.length;
        }

        if (a2 == null){
            anno2 = null;
            size2 = 0;
        }else{
            anno2 = a2.getAnnotations();
            size2 = anno2.length;
        }

        if (!ignoreNotFound){
            Object[] result = new Object[size1 + size2];
            for (int i = 0; i < size1; i++){
                result[i] = toAnnoType(anno1[i], cp);
            }

            for (int j = 0; j < size2; j++){
                result[j + size1] = toAnnoType(anno2[j], cp);
            }

            return result;
        }
        List annotations = new ArrayList<>();
        for (int i = 0; i < size1; i++){
            try{
                annotations.add(toAnnoType(anno1[i], cp));
            }catch (ClassNotFoundException e){}
        }
        for (int j = 0; j < size2; j++){
            try{
                annotations.add(toAnnoType(anno2[j], cp));
            }catch (ClassNotFoundException e){}
        }

        return annotations.toArray();
    }

    static Object[][] toAnnotationType(
                    boolean ignoreNotFound,
                    ClassPool cp,
                    ParameterAnnotationsAttribute a1,
                    ParameterAnnotationsAttribute a2,
                    MethodInfo minfo) throws ClassNotFoundException{
        int numParameters = 0;
        if (a1 != null){
            numParameters = a1.numParameters();
        }else if (a2 != null){
            numParameters = a2.numParameters();
        }else{
            numParameters = Descriptor.numOfParameters(minfo.getDescriptor());
        }

        Object[][] result = new Object[numParameters][];
        for (int i = 0; i < numParameters; i++){
            Annotation[] anno1, anno2;
            int size1, size2;

            if (a1 == null){
                anno1 = null;
                size1 = 0;
            }else{
                anno1 = a1.getAnnotations()[i];
                size1 = anno1.length;
            }

            if (a2 == null){
                anno2 = null;
                size2 = 0;
            }else{
                anno2 = a2.getAnnotations()[i];
                size2 = anno2.length;
            }

            if (!ignoreNotFound){
                result[i] = new Object[size1 + size2];
                for (int j = 0; j < size1; ++j){
                    result[i][j] = toAnnoType(anno1[j], cp);
                }

                for (int j = 0; j < size2; ++j){
                    result[i][j + size1] = toAnnoType(anno2[j], cp);
                }
            }else{
                List annotations = new ArrayList<>();
                for (int j = 0; j < size1; j++){
                    try{
                        annotations.add(toAnnoType(anno1[j], cp));
                    }catch (ClassNotFoundException e){}
                }
                for (int j = 0; j < size2; j++){
                    try{
                        annotations.add(toAnnoType(anno2[j], cp));
                    }catch (ClassNotFoundException e){}
                }

                result[i] = annotations.toArray();
            }
        }

        return result;
    }

    private static Object toAnnoType(Annotation anno,ClassPool cp) throws ClassNotFoundException{
        try{
            ClassLoader cl = cp.getClassLoader();
            return anno.toAnnotationType(cl, cp);
        }catch (ClassNotFoundException e){
            ClassLoader cl2 = cp.getClass().getClassLoader();
            try{
                return anno.toAnnotationType(cl2, cp);
            }catch (ClassNotFoundException e2){
                try{
                    Class clazz = cp.get(anno.getTypeName()).toClass();
                    return com.feilong.lib.javassist.bytecode.annotation.AnnotationImpl.make(clazz.getClassLoader(), clazz, cp, anno);
                }catch (Throwable e3){
                    throw new ClassNotFoundException(anno.getTypeName());
                }
            }
        }
    }

    @Override
    public boolean subclassOf(CtClass superclass){
        if (superclass == null){
            return false;
        }

        String superName = superclass.getName();
        CtClass curr = this;
        try{
            while (curr != null){
                if (curr.getName().equals(superName)){
                    return true;
                }

                curr = curr.getSuperclass();
            }
        }catch (Exception ignored){}
        return false;
    }

    @Override
    public CtClass getSuperclass() throws NotFoundException{
        String supername = getClassFile2().getSuperclass();
        if (supername == null){
            return null;
        }
        return classPool.get(supername);
    }

    @Override
    public void setSuperclass(CtClass clazz) throws CannotCompileException{
        checkModify();
        if (isInterface()){
            addInterface(clazz);
        }else{
            getClassFile2().setSuperclass(clazz.getName());
        }
    }

    @Override
    public CtClass[] getInterfaces() throws NotFoundException{
        String[] ifs = getClassFile2().getInterfaces();
        int num = ifs.length;
        CtClass[] ifc = new CtClass[num];
        for (int i = 0; i < num; ++i){
            ifc[i] = classPool.get(ifs[i]);
        }

        return ifc;
    }

    @Override
    public void setInterfaces(CtClass[] list){
        checkModify();
        String[] ifs;
        if (list == null){
            ifs = new String[0];
        }else{
            int num = list.length;
            ifs = new String[num];
            for (int i = 0; i < num; ++i){
                ifs[i] = list[i].getName();
            }
        }

        getClassFile2().setInterfaces(ifs);
    }

    @Override
    public void addInterface(CtClass anInterface){
        checkModify();
        if (anInterface != null){
            getClassFile2().addInterface(anInterface.getName());
        }
    }

    @Override
    public CtClass getDeclaringClass() throws NotFoundException{
        ClassFile cf = getClassFile2();
        InnerClassesAttribute ica = (InnerClassesAttribute) cf.getAttribute(InnerClassesAttribute.tag);
        if (ica == null){
            return null;
        }

        String name = getName();
        int n = ica.tableLength();
        for (int i = 0; i < n; ++i){
            if (name.equals(ica.innerClass(i))){
                String outName = ica.outerClass(i);
                if (outName != null){
                    return classPool.get(outName);
                }

                // maybe anonymous or local class.
                EnclosingMethodAttribute ema = (EnclosingMethodAttribute) cf.getAttribute(EnclosingMethodAttribute.tag);
                if (ema != null){
                    return classPool.get(ema.className());
                }

            }
        }

        return null;
    }

    @Override
    public CtBehavior getEnclosingBehavior() throws NotFoundException{
        ClassFile cf = getClassFile2();
        EnclosingMethodAttribute ema = (EnclosingMethodAttribute) cf.getAttribute(EnclosingMethodAttribute.tag);
        if (ema == null){
            return null;
        }
        CtClass enc = classPool.get(ema.className());
        String name = ema.methodName();
        if (MethodInfo.nameInit.equals(name)){
            return enc.getConstructor(ema.methodDescriptor());
        }else if (MethodInfo.nameClinit.equals(name)){
            return enc.getClassInitializer();
        }else{
            return enc.getMethod(name, ema.methodDescriptor());
        }
    }

    @Override
    public CtClass makeNestedClass(String name,boolean isStatic){
        if (!isStatic){
            throw new RuntimeException("sorry, only nested static class is supported");
        }

        checkModify();
        CtClass c = classPool.makeNestedClass(getName() + "$" + name);
        ClassFile cf = getClassFile2();
        ClassFile cf2 = c.getClassFile2();
        InnerClassesAttribute ica = (InnerClassesAttribute) cf.getAttribute(InnerClassesAttribute.tag);
        if (ica == null){
            ica = new InnerClassesAttribute(cf.getConstPool());
            cf.addAttribute(ica);
        }

        ica.append(c.getName(), this.getName(), name, (cf2.getAccessFlags() & ~AccessFlag.SUPER) | AccessFlag.STATIC);
        cf2.addAttribute(ica.copy(cf2.getConstPool(), null));
        return c;
    }

    /*
     * flush cached names.
     */
    private void nameReplaced(){
        CtMember.Cache cache = hasMemberCache();
        if (cache != null){
            CtMember mth = cache.methodHead();
            CtMember tail = cache.lastMethod();
            while (mth != tail){
                mth = mth.next();
                mth.nameReplaced();
            }
        }
    }

    /**
     * Returns null if members are not cached.
     */
    protected CtMember.Cache hasMemberCache(){
        if (memberCache != null){
            return memberCache.get();
        }
        return null;
    }

    protected synchronized CtMember.Cache getMembers(){
        CtMember.Cache cache = null;
        if (memberCache == null || (cache = memberCache.get()) == null){
            cache = new CtMember.Cache(this);
            makeFieldCache(cache);
            makeBehaviorCache(cache);
            memberCache = new WeakReference<>(cache);
        }

        return cache;
    }

    private void makeFieldCache(CtMember.Cache cache){
        List fields = getClassFile3(false).getFields();
        for (FieldInfo finfo : fields){
            cache.addField(new CtField(finfo, this));
        }
    }

    private void makeBehaviorCache(CtMember.Cache cache){
        List methods = getClassFile3(false).getMethods();
        for (MethodInfo minfo : methods){
            if (minfo.isMethod()){
                cache.addMethod(new CtMethod(minfo, this));
            }else{
                cache.addConstructor(new CtConstructor(minfo, this));
            }
        }
    }

    @Override
    public CtField[] getFields(){
        List alist = new ArrayList<>();
        getFields(alist, this);
        return alist.toArray(new CtField[alist.size()]);
    }

    private static void getFields(List alist,CtClass cc){
        if (cc == null){
            return;
        }

        try{
            getFields(alist, cc.getSuperclass());
        }catch (NotFoundException e){}

        try{
            CtClass[] ifs = cc.getInterfaces();
            for (CtClass ctc : ifs){
                getFields(alist, ctc);
            }
        }catch (NotFoundException e){}

        CtMember.Cache memCache = ((CtClassType) cc).getMembers();
        CtMember field = memCache.fieldHead();
        CtMember tail = memCache.lastField();
        while (field != tail){
            field = field.next();
            if (!Modifier.isPrivate(field.getModifiers())){
                alist.add(field);
            }
        }
    }

    @Override
    public CtField getField(String name,String desc) throws NotFoundException{
        CtField f = getField2(name, desc);
        return checkGetField(f, name, desc);
    }

    private CtField checkGetField(CtField f,String name,String desc) throws NotFoundException{
        if (f == null){
            String msg = "field: " + name;
            if (desc != null){
                msg += " type " + desc;
            }

            throw new NotFoundException(msg + " in " + getName());
        }
        return f;
    }

    @Override
    CtField getField2(String name,String desc){
        CtField df = getDeclaredField2(name, desc);
        if (df != null){
            return df;
        }

        try{
            CtClass[] ifs = getInterfaces();
            for (CtClass ctc : ifs){
                CtField f = ctc.getField2(name, desc);
                if (f != null){
                    return f;
                }
            }

            CtClass s = getSuperclass();
            if (s != null){
                return s.getField2(name, desc);
            }
        }catch (NotFoundException e){}
        return null;
    }

    @Override
    public CtField[] getDeclaredFields(){
        CtMember.Cache memCache = getMembers();
        CtMember field = memCache.fieldHead();
        CtMember tail = memCache.lastField();
        int num = CtMember.Cache.count(field, tail);
        CtField[] cfs = new CtField[num];
        int i = 0;
        while (field != tail){
            field = field.next();
            cfs[i++] = (CtField) field;
        }

        return cfs;
    }

    @Override
    public CtField getDeclaredField(String name) throws NotFoundException{
        return getDeclaredField(name, null);
    }

    @Override
    public CtField getDeclaredField(String name,String desc) throws NotFoundException{
        CtField f = getDeclaredField2(name, desc);
        return checkGetField(f, name, desc);
    }

    private CtField getDeclaredField2(String name,String desc){
        CtMember.Cache memCache = getMembers();
        CtMember field = memCache.fieldHead();
        CtMember tail = memCache.lastField();
        while (field != tail){
            field = field.next();
            if (field.getName().equals(name) && (desc == null || desc.equals(field.getSignature()))){
                return (CtField) field;
            }
        }

        return null;
    }

    @Override
    public CtBehavior[] getDeclaredBehaviors(){
        CtMember.Cache memCache = getMembers();
        CtMember cons = memCache.consHead();
        CtMember consTail = memCache.lastCons();
        int cnum = CtMember.Cache.count(cons, consTail);
        CtMember mth = memCache.methodHead();
        CtMember mthTail = memCache.lastMethod();
        int mnum = CtMember.Cache.count(mth, mthTail);

        CtBehavior[] cb = new CtBehavior[cnum + mnum];
        int i = 0;
        while (cons != consTail){
            cons = cons.next();
            cb[i++] = (CtBehavior) cons;
        }

        while (mth != mthTail){
            mth = mth.next();
            cb[i++] = (CtBehavior) mth;
        }

        return cb;
    }

    @Override
    public CtConstructor[] getConstructors(){
        CtMember.Cache memCache = getMembers();
        CtMember cons = memCache.consHead();
        CtMember consTail = memCache.lastCons();

        int n = 0;
        CtMember mem = cons;
        while (mem != consTail){
            mem = mem.next();
            if (isPubCons((CtConstructor) mem)){
                n++;
            }
        }

        CtConstructor[] result = new CtConstructor[n];
        int i = 0;
        mem = cons;
        while (mem != consTail){
            mem = mem.next();
            CtConstructor cc = (CtConstructor) mem;
            if (isPubCons(cc)){
                result[i++] = cc;
            }
        }

        return result;
    }

    private static boolean isPubCons(CtConstructor cons){
        return !Modifier.isPrivate(cons.getModifiers()) && cons.isConstructor();
    }

    @Override
    public CtConstructor getConstructor(String desc) throws NotFoundException{
        CtMember.Cache memCache = getMembers();
        CtMember cons = memCache.consHead();
        CtMember consTail = memCache.lastCons();

        while (cons != consTail){
            cons = cons.next();
            CtConstructor cc = (CtConstructor) cons;
            if (cc.getMethodInfo2().getDescriptor().equals(desc) && cc.isConstructor()){
                return cc;
            }
        }

        return super.getConstructor(desc);
    }

    @Override
    public CtConstructor[] getDeclaredConstructors(){
        CtMember.Cache memCache = getMembers();
        CtMember cons = memCache.consHead();
        CtMember consTail = memCache.lastCons();

        int n = 0;
        CtMember mem = cons;
        while (mem != consTail){
            mem = mem.next();
            CtConstructor cc = (CtConstructor) mem;
            if (cc.isConstructor()){
                n++;
            }
        }

        CtConstructor[] result = new CtConstructor[n];
        int i = 0;
        mem = cons;
        while (mem != consTail){
            mem = mem.next();
            CtConstructor cc = (CtConstructor) mem;
            if (cc.isConstructor()){
                result[i++] = cc;
            }
        }

        return result;
    }

    @Override
    public CtConstructor getClassInitializer(){
        CtMember.Cache memCache = getMembers();
        CtMember cons = memCache.consHead();
        CtMember consTail = memCache.lastCons();

        while (cons != consTail){
            cons = cons.next();
            CtConstructor cc = (CtConstructor) cons;
            if (cc.isClassInitializer()){
                return cc;
            }
        }

        return null;
    }

    @Override
    public CtMethod[] getMethods(){
        Map h = new HashMap<>();
        getMethods0(h, this);
        return h.values().toArray(new CtMethod[h.size()]);
    }

    private static void getMethods0(Map h,CtClass cc){
        try{
            CtClass[] ifs = cc.getInterfaces();
            for (CtClass ctc : ifs){
                getMethods0(h, ctc);
            }
        }catch (NotFoundException e){}

        try{
            CtClass s = cc.getSuperclass();
            if (s != null){
                getMethods0(h, s);
            }
        }catch (NotFoundException e){}

        if (cc instanceof CtClassType){
            CtMember.Cache memCache = ((CtClassType) cc).getMembers();
            CtMember mth = memCache.methodHead();
            CtMember mthTail = memCache.lastMethod();

            while (mth != mthTail){
                mth = mth.next();
                if (!Modifier.isPrivate(mth.getModifiers())){
                    h.put(((CtMethod) mth).getStringRep(), mth);
                }
            }
        }
    }

    @Override
    public CtMethod getMethod(String name,String desc) throws NotFoundException{
        CtMethod m = getMethod0(this, name, desc);
        if (m != null){
            return m;
        }
        throw new NotFoundException(name + "(..) is not found in " + getName());
    }

    private static CtMethod getMethod0(CtClass cc,String name,String desc){
        if (cc instanceof CtClassType){
            CtMember.Cache memCache = ((CtClassType) cc).getMembers();
            CtMember mth = memCache.methodHead();
            CtMember mthTail = memCache.lastMethod();

            while (mth != mthTail){
                mth = mth.next();
                if (mth.getName().equals(name) && ((CtMethod) mth).getMethodInfo2().getDescriptor().equals(desc)){
                    return (CtMethod) mth;
                }
            }
        }

        try{
            CtClass s = cc.getSuperclass();
            if (s != null){
                CtMethod m = getMethod0(s, name, desc);
                if (m != null){
                    return m;
                }
            }
        }catch (NotFoundException e){}

        try{
            CtClass[] ifs = cc.getInterfaces();
            for (CtClass ctc : ifs){
                CtMethod m = getMethod0(ctc, name, desc);
                if (m != null){
                    return m;
                }
            }
        }catch (NotFoundException e){}
        return null;
    }

    @Override
    public CtMethod[] getDeclaredMethods(){
        CtMember.Cache memCache = getMembers();
        CtMember mth = memCache.methodHead();
        CtMember mthTail = memCache.lastMethod();
        List methods = new ArrayList<>();
        while (mth != mthTail){
            mth = mth.next();
            methods.add(mth);
        }

        return methods.toArray(new CtMethod[methods.size()]);
    }

    @Override
    public CtMethod[] getDeclaredMethods(String name) throws NotFoundException{
        CtMember.Cache memCache = getMembers();
        CtMember mth = memCache.methodHead();
        CtMember mthTail = memCache.lastMethod();
        List methods = new ArrayList<>();
        while (mth != mthTail){
            mth = mth.next();
            if (mth.getName().equals(name)){
                methods.add(mth);
            }
        }

        return methods.toArray(new CtMethod[methods.size()]);
    }

    @Override
    public CtMethod getDeclaredMethod(String name) throws NotFoundException{
        CtMember.Cache memCache = getMembers();
        CtMember mth = memCache.methodHead();
        CtMember mthTail = memCache.lastMethod();
        while (mth != mthTail){
            mth = mth.next();
            if (mth.getName().equals(name)){
                return (CtMethod) mth;
            }
        }

        throw new NotFoundException(name + "(..) is not found in " + getName());
    }

    @Override
    public CtMethod getDeclaredMethod(String name,CtClass[] params) throws NotFoundException{
        String desc = Descriptor.ofParameters(params);
        CtMember.Cache memCache = getMembers();
        CtMember mth = memCache.methodHead();
        CtMember mthTail = memCache.lastMethod();

        while (mth != mthTail){
            mth = mth.next();
            if (mth.getName().equals(name) && ((CtMethod) mth).getMethodInfo2().getDescriptor().startsWith(desc)){
                return (CtMethod) mth;
            }
        }

        throw new NotFoundException(name + "(..) is not found in " + getName());
    }

    @Override
    public void addField(CtField f,String init) throws CannotCompileException{
        addField(f, CtField.Initializer.byExpr(init));
    }

    @Override
    public void addField(CtField f,CtField.Initializer init) throws CannotCompileException{
        checkModify();
        if (f.getDeclaringClass() != this){
            throw new CannotCompileException("cannot add");
        }

        if (init == null){
            init = f.getInit();
        }

        if (init != null){
            init.check(f.getSignature());
            int mod = f.getModifiers();
            if (Modifier.isStatic(mod) && Modifier.isFinal(mod)){
                try{
                    ConstPool cp = getClassFile2().getConstPool();
                    int index = init.getConstantValue(cp, f.getType());
                    if (index != 0){
                        f.getFieldInfo2().addAttribute(new ConstantAttribute(cp, index));
                        init = null;
                    }
                }catch (NotFoundException e){}
            }
        }

        getMembers().addField(f);
        getClassFile2().addField(f.getFieldInfo2());

        if (init != null){
            FieldInitLink fil = new FieldInitLink(f, init);
            FieldInitLink link = fieldInitializers;
            if (link == null){
                fieldInitializers = fil;
            }else{
                while (link.next != null){
                    link = link.next;
                }

                link.next = fil;
            }
        }
    }

    @Override
    public void removeField(CtField f) throws NotFoundException{
        checkModify();
        FieldInfo fi = f.getFieldInfo2();
        ClassFile cf = getClassFile2();
        if (cf.getFields().remove(fi)){
            getMembers().remove(f);
            gcConstPool = true;
        }else{
            throw new NotFoundException(f.toString());
        }
    }

    @Override
    public CtConstructor makeClassInitializer() throws CannotCompileException{
        CtConstructor clinit = getClassInitializer();
        if (clinit != null){
            return clinit;
        }

        checkModify();
        ClassFile cf = getClassFile2();
        Bytecode code = new Bytecode(cf.getConstPool(), 0, 0);
        modifyClassConstructor(cf, code, 0, 0);
        return getClassInitializer();
    }

    @Override
    public void addConstructor(CtConstructor c) throws CannotCompileException{
        checkModify();
        if (c.getDeclaringClass() != this){
            throw new CannotCompileException("cannot add");
        }

        getMembers().addConstructor(c);
        getClassFile2().addMethod(c.getMethodInfo2());
    }

    @Override
    public void removeConstructor(CtConstructor m) throws NotFoundException{
        checkModify();
        MethodInfo mi = m.getMethodInfo2();
        ClassFile cf = getClassFile2();
        if (cf.getMethods().remove(mi)){
            getMembers().remove(m);
            gcConstPool = true;
        }else{
            throw new NotFoundException(m.toString());
        }
    }

    @Override
    public void addMethod(CtMethod m) throws CannotCompileException{
        checkModify();
        if (m.getDeclaringClass() != this){
            throw new CannotCompileException("bad declaring class");
        }

        int mod = m.getModifiers();
        if ((getModifiers() & Modifier.INTERFACE) != 0){
            if (Modifier.isProtected(mod) || Modifier.isPrivate(mod)){
                throw new CannotCompileException("an interface method must be public: " + m.toString());
            }

            m.setModifiers(mod | Modifier.PUBLIC);
        }

        getMembers().addMethod(m);
        getClassFile2().addMethod(m.getMethodInfo2());
        if ((mod & Modifier.ABSTRACT) != 0){
            setModifiers(getModifiers() | Modifier.ABSTRACT);
        }
    }

    @Override
    public void removeMethod(CtMethod m) throws NotFoundException{
        checkModify();
        MethodInfo mi = m.getMethodInfo2();
        ClassFile cf = getClassFile2();
        if (cf.getMethods().remove(mi)){
            getMembers().remove(m);
            gcConstPool = true;
        }else{
            throw new NotFoundException(m.toString());
        }
    }

    @Override
    public byte[] getAttribute(String name){
        AttributeInfo ai = getClassFile2().getAttribute(name);
        if (ai == null){
            return null;
        }
        return ai.get();
    }

    @Override
    public void setAttribute(String name,byte[] data){
        checkModify();
        ClassFile cf = getClassFile2();
        cf.addAttribute(new AttributeInfo(cf.getConstPool(), name, data));
    }

    @Override
    public void instrument(CodeConverter converter) throws CannotCompileException{
        checkModify();
        ClassFile cf = getClassFile2();
        ConstPool cp = cf.getConstPool();
        List methods = cf.getMethods();
        for (MethodInfo minfo : methods.toArray(new MethodInfo[methods.size()])){
            converter.doit(this, minfo, cp);
        }
    }

    @Override
    public void instrument(ExprEditor editor) throws CannotCompileException{
        checkModify();
        ClassFile cf = getClassFile2();
        List methods = cf.getMethods();
        for (MethodInfo minfo : methods.toArray(new MethodInfo[methods.size()])){
            editor.doit(this, minfo);
        }
    }

    /**
     * @see com.feilong.lib.javassist.CtClass#prune()
     * @see com.feilong.lib.javassist.CtClass#stopPruning(boolean)
     */
    @Override
    public void prune(){
        if (wasPruned){
            return;
        }

        wasPruned = wasFrozen = true;
        getClassFile2().prune();
    }

    @Override
    public void rebuildClassFile(){
        gcConstPool = true;
    }

    @Override
    public void toBytecode(DataOutputStream out) throws CannotCompileException,IOException{
        try{
            if (isModified()){
                checkPruned("toBytecode");
                ClassFile cf = getClassFile2();
                if (gcConstPool){
                    cf.compact();
                    gcConstPool = false;
                }

                modifyClassConstructor(cf);
                modifyConstructors(cf);
                if (debugDump != null){
                    dumpClassFile(cf);
                }

                cf.write(out);
                out.flush();
                fieldInitializers = null;
                if (doPruning){
                    // to save memory
                    cf.prune();
                    wasPruned = true;
                }
            }else{
                classPool.writeClassfile(getName(), out);
                // to save memory
                // classfile = null;
            }

            getCount = 0;
            wasFrozen = true;
        }catch (NotFoundException e){
            throw new CannotCompileException(e);
        }catch (IOException e){
            throw new CannotCompileException(e);
        }
    }

    private void dumpClassFile(ClassFile cf) throws IOException{
        DataOutputStream dump = makeFileOutput(debugDump);
        try{
            cf.write(dump);
        }finally{
            dump.close();
        }
    }

    /*
     * See also checkModified()
     */
    private void checkPruned(String method){
        if (wasPruned){
            throw new RuntimeException(method + "(): " + getName() + " was pruned.");
        }
    }

    @Override
    public boolean stopPruning(boolean stop){
        boolean prev = !doPruning;
        doPruning = !stop;
        return prev;
    }

    private void modifyClassConstructor(ClassFile cf) throws CannotCompileException,NotFoundException{
        if (fieldInitializers == null){
            return;
        }

        Bytecode code = new Bytecode(cf.getConstPool(), 0, 0);
        Javac jv = new Javac(code, this);
        int stacksize = 0;
        boolean doInit = false;
        for (FieldInitLink fi = fieldInitializers; fi != null; fi = fi.next){
            CtField f = fi.field;
            if (Modifier.isStatic(f.getModifiers())){
                doInit = true;
                int s = fi.init.compileIfStatic(f.getType(), f.getName(), code, jv);
                if (stacksize < s){
                    stacksize = s;
                }
            }
        }

        if (doInit){
            modifyClassConstructor(cf, code, stacksize, 0);
        }
    }

    private void modifyClassConstructor(ClassFile cf,Bytecode code,int stacksize,int localsize) throws CannotCompileException{
        MethodInfo m = cf.getStaticInitializer();
        if (m == null){
            code.add(Opcode.RETURN);
            code.setMaxStack(stacksize);
            code.setMaxLocals(localsize);
            m = new MethodInfo(cf.getConstPool(), "", "()V");
            m.setAccessFlags(AccessFlag.STATIC);
            m.setCodeAttribute(code.toCodeAttribute());
            cf.addMethod(m);
            CtMember.Cache cache = hasMemberCache();
            if (cache != null){
                cache.addConstructor(new CtConstructor(m, this));
            }
        }else{
            CodeAttribute codeAttr = m.getCodeAttribute();
            if (codeAttr == null){
                throw new CannotCompileException("empty ");
            }

            try{
                CodeIterator it = codeAttr.iterator();
                int pos = it.insertEx(code.get());
                it.insert(code.getExceptionTable(), pos);
                int maxstack = codeAttr.getMaxStack();
                if (maxstack < stacksize){
                    codeAttr.setMaxStack(stacksize);
                }

                int maxlocals = codeAttr.getMaxLocals();
                if (maxlocals < localsize){
                    codeAttr.setMaxLocals(localsize);
                }
            }catch (BadBytecode e){
                throw new CannotCompileException(e);
            }
        }

        try{
            m.rebuildStackMapIf6(classPool, cf);
        }catch (BadBytecode e){
            throw new CannotCompileException(e);
        }
    }

    private void modifyConstructors(ClassFile cf) throws CannotCompileException,NotFoundException{
        if (fieldInitializers == null){
            return;
        }

        ConstPool cp = cf.getConstPool();
        List methods = cf.getMethods();
        for (MethodInfo minfo : methods){
            if (minfo.isConstructor()){
                CodeAttribute codeAttr = minfo.getCodeAttribute();
                if (codeAttr != null){
                    try{
                        Bytecode init = new Bytecode(cp, 0, codeAttr.getMaxLocals());
                        CtClass[] params = Descriptor.getParameterTypes(minfo.getDescriptor(), classPool);
                        int stacksize = makeFieldInitializer(init, params);
                        insertAuxInitializer(codeAttr, init, stacksize);
                        minfo.rebuildStackMapIf6(classPool, cf);
                    }catch (BadBytecode e){
                        throw new CannotCompileException(e);
                    }
                }
            }
        }
    }

    private static void insertAuxInitializer(CodeAttribute codeAttr,Bytecode initializer,int stacksize) throws BadBytecode{
        CodeIterator it = codeAttr.iterator();
        int index = it.skipSuperConstructor();
        if (index < 0){
            index = it.skipThisConstructor();
            if (index >= 0){
                return; // this() is called.
            }

            // Neither this() or super() is called.
        }

        int pos = it.insertEx(initializer.get());
        it.insert(initializer.getExceptionTable(), pos);
        int maxstack = codeAttr.getMaxStack();
        if (maxstack < stacksize){
            codeAttr.setMaxStack(stacksize);
        }
    }

    private int makeFieldInitializer(Bytecode code,CtClass[] parameters) throws CannotCompileException,NotFoundException{
        int stacksize = 0;
        Javac jv = new Javac(code, this);
        try{
            jv.recordParams(parameters, false);
        }catch (CompileError e){
            throw new CannotCompileException(e);
        }

        for (FieldInitLink fi = fieldInitializers; fi != null; fi = fi.next){
            CtField f = fi.field;
            if (!Modifier.isStatic(f.getModifiers())){
                int s = fi.init.compile(f.getType(), f.getName(), code, parameters, jv);
                if (stacksize < s){
                    stacksize = s;
                }
            }
        }

        return stacksize;
    }

    // Methods used by CtNewWrappedMethod

    Map getHiddenMethods(){
        if (hiddenMethods == null){
            hiddenMethods = new Hashtable<>();
        }

        return hiddenMethods;
    }

    int getUniqueNumber(){
        return uniqueNumberSeed++;
    }

    @Override
    public String makeUniqueName(String prefix){
        Map table = new HashMap<>();
        makeMemberList(table);
        Set keys = table.keySet();
        String[] methods = new String[keys.size()];
        keys.toArray(methods);

        if (notFindInArray(prefix, methods)){
            return prefix;
        }

        int i = 100;
        String name;
        do{
            if (i > 999){
                throw new RuntimeException("too many unique name");
            }

            name = prefix + i++;
        }while (!notFindInArray(name, methods));
        return name;
    }

    private static boolean notFindInArray(String prefix,String[] values){
        int len = values.length;
        for (int i = 0; i < len; i++){
            if (values[i].startsWith(prefix)){
                return false;
            }
        }

        return true;
    }

    private void makeMemberList(Map table){
        int mod = getModifiers();
        if (Modifier.isAbstract(mod) || Modifier.isInterface(mod)){
            try{
                CtClass[] ifs = getInterfaces();
                for (CtClass ic : ifs){
                    if (ic != null && ic instanceof CtClassType){
                        ((CtClassType) ic).makeMemberList(table);
                    }
                }
            }catch (NotFoundException e){}
        }

        try{
            CtClass s = getSuperclass();
            if (s != null && s instanceof CtClassType){
                ((CtClassType) s).makeMemberList(table);
            }
        }catch (NotFoundException e){}

        List methods = getClassFile2().getMethods();
        for (MethodInfo minfo : methods){
            table.put(minfo.getName(), this);
        }

        List fields = getClassFile2().getFields();
        for (FieldInfo finfo : fields){
            table.put(finfo.getName(), this);
        }
    }
}

class FieldInitLink{

    FieldInitLink       next;

    CtField             field;

    CtField.Initializer init;

    FieldInitLink(CtField f, CtField.Initializer i){
        next = null;
        field = f;
        init = i;
    }
}
 















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