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448 lines
12 KiB
448 lines
12 KiB
10 years ago
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package org.jetbrains.java.decompiler.modules.renamer;
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11 years ago
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.LinkedList;
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import java.util.List;
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10 years ago
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import org.jetbrains.java.decompiler.code.CodeConstants;
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import org.jetbrains.java.decompiler.main.DecompilerContext;
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import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
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import org.jetbrains.java.decompiler.main.extern.IIdentifierRenamer;
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import org.jetbrains.java.decompiler.struct.StructClass;
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import org.jetbrains.java.decompiler.struct.StructContext;
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import org.jetbrains.java.decompiler.struct.StructField;
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import org.jetbrains.java.decompiler.struct.StructMethod;
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import org.jetbrains.java.decompiler.struct.gen.FieldDescriptor;
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import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor;
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import org.jetbrains.java.decompiler.struct.gen.VarType;
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import org.jetbrains.java.decompiler.util.VBStyleCollection;
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11 years ago
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public class IdentifierConverter {
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private StructContext context;
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private IIdentifierRenamer helper;
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private PoolInterceptor interceptor;
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private List<ClassWrapperNode> rootClasses = new ArrayList<ClassWrapperNode>();
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private List<ClassWrapperNode> rootInterfaces = new ArrayList<ClassWrapperNode>();
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private HashMap<String, HashMap<String, String>> interfaceNameMaps = new HashMap<String, HashMap<String, String>>();
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public void rename(StructContext context) {
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try {
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this.context = context;
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String user_class = (String)DecompilerContext.getProperty(IFernflowerPreferences.USER_RENAMER_CLASS);
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if(user_class != null) {
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try {
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helper = (IIdentifierRenamer)IdentifierConverter.class.getClassLoader().loadClass(user_class).newInstance();
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} catch(Exception ex) {
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; // ignore errors
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}
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}
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if(helper == null) {
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helper = new ConverterHelper();
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}
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interceptor = new PoolInterceptor(helper);
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buildInheritanceTree();
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renameAllClasses();
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renameInterfaces();
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renameClasses();
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DecompilerContext.setPoolInterceptor(interceptor);
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context.reloadContext();
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} catch(IOException ex){
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throw new RuntimeException("Renaming failed!");
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}
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}
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private void renameClasses() {
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List<ClassWrapperNode> lstClasses = getReversePostOrderListIterative(rootClasses);
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HashMap<String, HashMap<String, String>> classNameMaps = new HashMap<String, HashMap<String, String>>();
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for(ClassWrapperNode node : lstClasses) {
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StructClass cl = node.getClassStruct();
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HashMap<String, String> names = new HashMap<String, String>();
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// merge informations on super class
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if(cl.superClass != null) {
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HashMap<String, String> mapClass = classNameMaps.get(cl.superClass.getString());
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if(mapClass != null) {
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names.putAll(mapClass);
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}
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}
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// merge informations on interfaces
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for(String intrName : cl.getInterfaceNames()) {
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HashMap<String, String> mapInt = interfaceNameMaps.get(intrName);
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if(mapInt != null) {
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names.putAll(mapInt);
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} else {
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StructClass clintr = context.getClass(intrName);
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if(clintr!=null) {
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names.putAll(processExternalInterface(clintr));
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}
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}
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}
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renameClassIdentifiers(cl, names);
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if(!node.getSubclasses().isEmpty()) {
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classNameMaps.put(cl.qualifiedName, names);
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}
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}
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}
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private HashMap<String, String> processExternalInterface(StructClass cl) {
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HashMap<String, String> names = new HashMap<String, String>();
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for(String intrName : cl.getInterfaceNames()) {
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HashMap<String, String> mapInt = interfaceNameMaps.get(intrName);
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if(mapInt != null) {
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names.putAll(mapInt);
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} else {
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StructClass clintr = context.getClass(intrName);
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if(clintr!=null) {
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names.putAll(processExternalInterface(clintr));
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}
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}
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}
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renameClassIdentifiers(cl, names);
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return names;
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}
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private void renameInterfaces() {
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List<ClassWrapperNode> lstInterfaces = getReversePostOrderListIterative(rootInterfaces);
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HashMap<String, HashMap<String, String>> interfaceNameMaps = new HashMap<String, HashMap<String, String>>();
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// rename methods and fields
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for(ClassWrapperNode node : lstInterfaces) {
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StructClass cl = node.getClassStruct();
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HashMap<String, String> names = new HashMap<String, String>();
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// merge informations on super interfaces
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for(String intrName : cl.getInterfaceNames()) {
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HashMap<String, String> mapInt = interfaceNameMaps.get(intrName);
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if(mapInt != null) {
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names.putAll(mapInt);
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}
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}
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renameClassIdentifiers(cl, names);
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interfaceNameMaps.put(cl.qualifiedName, names);
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}
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this.interfaceNameMaps = interfaceNameMaps;
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}
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private void renameAllClasses() {
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// order not important
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List<ClassWrapperNode> lstAllClasses = new ArrayList<ClassWrapperNode>(getReversePostOrderListIterative(rootInterfaces));
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lstAllClasses.addAll(getReversePostOrderListIterative(rootClasses));
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// rename all interfaces and classes
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for(ClassWrapperNode node : lstAllClasses) {
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renameClass(node.getClassStruct());
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}
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}
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private void renameClass(StructClass cl) {
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if(!cl.isOwn()) {
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return;
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}
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String classOldFullName = cl.qualifiedName;
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String classNewFullName = classOldFullName;
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// TODO: rename packages
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String clsimplename = ConverterHelper.getSimpleClassName(classOldFullName);
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if(helper.toBeRenamed(IIdentifierRenamer.ELEMENT_CLASS, clsimplename, null, null)) {
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do {
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classNewFullName = ConverterHelper.replaceSimpleClassName(classOldFullName,
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helper.getNextClassname(classOldFullName, ConverterHelper.getSimpleClassName(classOldFullName)));
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} while(context.getClasses().containsKey(classNewFullName));
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interceptor.addName(classOldFullName, classNewFullName);
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}
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}
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private void renameClassIdentifiers(StructClass cl, HashMap<String, String> names) {
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// all classes are already renamed
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String classOldFullName = cl.qualifiedName;
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String classNewFullName = interceptor.getName(classOldFullName);
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if(classNewFullName == null) {
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classNewFullName = classOldFullName;
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}
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// methods
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HashSet<String> setMethodNames = new HashSet<String>();
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for(StructMethod md : cl.getMethods()) {
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setMethodNames.add(md.getName());
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}
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VBStyleCollection<StructMethod, String> methods = cl.getMethods();
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for(int i=0;i<methods.size();i++) {
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StructMethod mt = methods.get(i);
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String key = methods.getKey(i);
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int access_flags = mt.getAccessFlags();
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boolean isPrivate = ((access_flags & CodeConstants.ACC_PRIVATE) != 0);
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String name = mt.getName();
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if(!cl.isOwn() || (access_flags & CodeConstants.ACC_NATIVE) != 0) {
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// external and native methods must not be renamed
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if(!isPrivate) {
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names.put(key, name);
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}
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} else if(helper.toBeRenamed(IIdentifierRenamer.ELEMENT_METHOD, classOldFullName, name, mt.getDescriptor())) {
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if(isPrivate || !names.containsKey(key)) {
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do {
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name = helper.getNextMethodname(classOldFullName, name, mt.getDescriptor());
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} while(setMethodNames.contains(name));
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if(!isPrivate) {
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names.put(key, name);
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}
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} else {
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name = names.get(key);
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}
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interceptor.addName(classOldFullName+" "+mt.getName()+" "+mt.getDescriptor(),
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classNewFullName+" "+name+" "+buildNewDescriptor(false, mt.getDescriptor()));
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}
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}
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// external fields are not being renamed
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if(!cl.isOwn()) {
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return;
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}
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// fields
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// FIXME: should overloaded fields become the same name?
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HashSet<String> setFieldNames = new HashSet<String>();
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for(StructField fd : cl.getFields()) {
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setFieldNames.add(fd.getName());
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}
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for(StructField fd : cl.getFields()) {
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if(helper.toBeRenamed(IIdentifierRenamer.ELEMENT_FIELD, classOldFullName, fd.getName(), fd.getDescriptor())) {
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String newname;
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do {
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newname = helper.getNextFieldname(classOldFullName, fd.getName(), fd.getDescriptor());
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} while(setFieldNames.contains(newname));
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interceptor.addName(classOldFullName+" "+fd.getName()+" "+fd.getDescriptor(),
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classNewFullName+" "+newname+" "+buildNewDescriptor(true, fd.getDescriptor()));
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}
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}
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}
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private String buildNewDescriptor(boolean isField, String descriptor) {
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boolean updated = false;
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if(isField) {
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FieldDescriptor fd = FieldDescriptor.parseDescriptor(descriptor);
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VarType ftype = fd.type;
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if(ftype.type == CodeConstants.TYPE_OBJECT) {
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String newclname = interceptor.getName(ftype.value);
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if(newclname != null) {
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ftype.value = newclname;
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updated = true;
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}
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}
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if(updated) {
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return fd.getDescriptor();
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}
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} else {
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MethodDescriptor md = MethodDescriptor.parseDescriptor(descriptor);
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// params
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for(VarType partype : md.params) {
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if(partype.type == CodeConstants.TYPE_OBJECT) {
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String newclname = interceptor.getName(partype.value);
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if(newclname != null) {
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partype.value = newclname;
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updated = true;
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}
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}
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}
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// return value
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if(md.ret.type == CodeConstants.TYPE_OBJECT) {
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String newclname = interceptor.getName(md.ret.value);
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if(newclname!=null) {
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md.ret.value = newclname;
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updated = true;
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}
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}
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if(updated) {
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return md.getDescriptor();
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}
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}
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return descriptor;
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}
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private List<ClassWrapperNode> getReversePostOrderListIterative(List<ClassWrapperNode> roots) {
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List<ClassWrapperNode> res = new ArrayList<ClassWrapperNode>();
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LinkedList<ClassWrapperNode> stackNode = new LinkedList<ClassWrapperNode>();
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LinkedList<Integer> stackIndex = new LinkedList<Integer>();
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HashSet<ClassWrapperNode> setVisited = new HashSet<ClassWrapperNode>();
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for(ClassWrapperNode root : roots) {
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stackNode.add(root);
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stackIndex.add(0);
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}
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while(!stackNode.isEmpty()) {
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ClassWrapperNode node = stackNode.getLast();
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int index = stackIndex.removeLast();
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setVisited.add(node);
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List<ClassWrapperNode> lstSubs = node.getSubclasses();
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for(; index < lstSubs.size(); index++) {
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ClassWrapperNode sub = lstSubs.get(index);
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if(!setVisited.contains(sub)) {
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stackIndex.add(index+1);
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stackNode.add(sub);
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stackIndex.add(0);
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break;
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}
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}
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if(index == lstSubs.size()) {
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res.add(0, node);
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stackNode.removeLast();
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}
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}
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return res;
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}
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private void buildInheritanceTree() {
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HashMap<String, ClassWrapperNode> nodes = new HashMap<String, ClassWrapperNode>();
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HashMap<String, StructClass> classes = context.getClasses();
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List<ClassWrapperNode> rootClasses = new ArrayList<ClassWrapperNode>();
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List<ClassWrapperNode> rootInterfaces = new ArrayList<ClassWrapperNode>();
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for(StructClass cl : classes.values()) {
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if(!cl.isOwn()) {
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continue;
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}
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LinkedList<StructClass> stack = new LinkedList<StructClass>();
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LinkedList<ClassWrapperNode> stackSubnodes = new LinkedList<ClassWrapperNode>();
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stack.add(cl);
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stackSubnodes.add(null);
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while(!stack.isEmpty()) {
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StructClass clstr = stack.removeFirst();
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ClassWrapperNode child = stackSubnodes.removeFirst();
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ClassWrapperNode node = nodes.get(clstr.qualifiedName);
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boolean isNewNode = (node == null);
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if(isNewNode) {
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nodes.put(clstr.qualifiedName, node = new ClassWrapperNode(clstr));
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}
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if(child!=null) {
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node.addSubclass(child);
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}
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if(!isNewNode) {
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break;
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} else {
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boolean isInterface = ((clstr.access_flags & CodeConstants.ACC_INTERFACE) != 0);
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boolean found_parent = false;
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if(isInterface) {
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for(String intrName : clstr.getInterfaceNames()) {
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StructClass clparent = classes.get(intrName);
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if(clparent != null) {
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stack.add(clparent);
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stackSubnodes.add(node);
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found_parent = true;
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}
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}
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} else {
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if(clstr.superClass != null) { // null iff java/lang/Object
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StructClass clparent = classes.get(clstr.superClass.getString());
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if(clparent != null) {
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stack.add(clparent);
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stackSubnodes.add(node);
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found_parent = true;
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}
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}
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}
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if(!found_parent) { // no super class or interface
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(isInterface?rootInterfaces:rootClasses).add(node);
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}
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}
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}
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}
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this.rootClasses = rootClasses;
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this.rootInterfaces = rootInterfaces;
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}
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}
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