コード例 #1
0
        public virtual void Init()
        {
            DecompilerContext.SetProperty(DecompilerContext.Current_Class, classStruct);
            DecompilerContext.SetProperty(DecompilerContext.Current_Class_Wrapper, this);
            DecompilerContext.GetLogger().StartClass(classStruct.qualifiedName);
            int maxSec = System.Convert.ToInt32(DecompilerContext.GetProperty(IFernflowerPreferences
                                                                              .Max_Processing_Method).ToString());
            bool testMode = DecompilerContext.GetOption(IFernflowerPreferences.Unit_Test_Mode
                                                        );

            foreach (StructMethod mt in classStruct.GetMethods())
            {
                DecompilerContext.GetLogger().StartMethod(mt.GetName() + " " + mt.GetDescriptor()
                                                          );
                MethodDescriptor md      = MethodDescriptor.ParseDescriptor(mt.GetDescriptor());
                VarProcessor     varProc = new VarProcessor(mt, md);
                DecompilerContext.StartMethod(varProc);
                VarNamesCollector vc      = varProc.GetVarNamesCollector();
                CounterContainer  counter = DecompilerContext.GetCounterContainer();
                RootStatement     root    = null;
                bool isError = false;
                try
                {
                    if (mt.ContainsCode())
                    {
                        if (maxSec == 0 || testMode)
                        {
                            root = MethodProcessorRunnable.CodeToJava(mt, md, varProc);
                        }
                        else
                        {
                            MethodProcessorRunnable mtProc = new MethodProcessorRunnable(mt, md, varProc, DecompilerContext
                                                                                         .GetCurrentContext());
                            Thread mtThread = new Thread(o => mtProc.Run())
                            {
                                Name = "Java decompiler"
                            };
                            long stopAt = Runtime.CurrentTimeMillis() + maxSec * 1000L;
                            mtThread.Start();
                            while (!mtProc.IsFinished())
                            {
                                try
                                {
                                    lock (mtProc.Lock)
                                    {
                                        Thread.Sleep(200);
                                    }
                                }
                                catch (Exception e)
                                {
                                    KillThread(mtThread);
                                    throw;
                                }
                                if (Runtime.CurrentTimeMillis() >= stopAt)
                                {
                                    string message = "Processing time limit exceeded for method " + mt.GetName() + ", execution interrupted.";
                                    DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Error
                                                                               );
                                    KillThread(mtThread);
                                    isError = true;
                                    break;
                                }
                            }
                            if (!isError)
                            {
                                root = mtProc.GetResult();
                            }
                        }
                    }
                    else
                    {
                        bool thisVar    = !mt.HasModifier(ICodeConstants.Acc_Static);
                        int  paramCount = 0;
                        if (thisVar)
                        {
                            Sharpen.Collections.Put(varProc.GetThisVars(), new VarVersionPair(0, 0), classStruct
                                                    .qualifiedName);
                            paramCount = 1;
                        }
                        paramCount += [email protected];
                        int varIndex = 0;
                        for (int i = 0; i < paramCount; i++)
                        {
                            varProc.SetVarName(new VarVersionPair(varIndex, 0), vc.GetFreeName(varIndex));
                            if (thisVar)
                            {
                                if (i == 0)
                                {
                                    varIndex++;
                                }
                                else
                                {
                                    varIndex += md.@params[i - 1].stackSize;
                                }
                            }
                            else
                            {
                                varIndex += md.@params[i].stackSize;
                            }
                        }
                    }
                }
                catch (Exception t)
                {
                    string message = "Method " + mt.GetName() + " " + mt.GetDescriptor() + " couldn't be decompiled.";
                    DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Warn
                                                               , t);
                    isError = true;
                }
                MethodWrapper methodWrapper = new MethodWrapper(root, varProc, mt, counter);
                methodWrapper.decompiledWithErrors = isError;
                methods.AddWithKey(methodWrapper, InterpreterUtil.MakeUniqueKey(mt.GetName(), mt.
                                                                                GetDescriptor()));
                if (!isError)
                {
                    // rename vars so that no one has the same name as a field
                    VarNamesCollector namesCollector = new VarNamesCollector();
                    classStruct.GetFields().ForEach((StructField f) => namesCollector.AddName(f.GetName
                                                                                                  ()));
                    varProc.RefreshVarNames(namesCollector);
                    // if debug information present and should be used
                    if (DecompilerContext.GetOption(IFernflowerPreferences.Use_Debug_Var_Names))
                    {
                        StructLocalVariableTableAttribute attr = mt.GetLocalVariableAttr();
                        if (attr != null)
                        {
                            // only param names here
                            varProc.SetDebugVarNames(attr.GetMapParamNames());
                            // the rest is here
                            methodWrapper.GetOrBuildGraph().IterateExprents((Exprent exprent) => {
                                List <Exprent> lst = exprent.GetAllExprents(true);
                                lst.Add(exprent);
                                lst.Where(e => e.type == Exprent.Exprent_Var).ToList().ForEach((Exprent
                                                                                                e) => {
                                    VarExprent varExprent = (VarExprent)e;
                                    string name           = varExprent.GetDebugName(mt);
                                    if (name != null)
                                    {
                                        varProc.SetVarName(varExprent.GetVarVersionPair(), name);
                                    }
                                }
                                                                                               );
                                return(0);
                            }
                                                                            );
                        }
                    }
                }
                DecompilerContext.GetLogger().EndMethod();
            }
            DecompilerContext.GetLogger().EndClass();
        }
コード例 #2
0
        public override TextBuffer ToJava(int indent, BytecodeMappingTracer tracer)
        {
            TextBuffer buf             = new TextBuffer();
            string     super_qualifier = null;
            bool       isInstanceThis  = false;

            tracer.AddMapping(bytecode);
            if (instance is InvocationExprent)
            {
                ((InvocationExprent)instance).MarkUsingBoxingResult();
            }
            if (isStatic__)
            {
                if (IsBoxingCall() && canIgnoreBoxing)
                {
                    // process general "boxing" calls, e.g. 'Object[] data = { true }' or 'Byte b = 123'
                    // here 'byte' and 'short' values do not need an explicit narrowing type cast
                    ExprProcessor.GetCastedExprent(lstParameters[0], descriptor.@params[0], buf, indent
                                                   , false, false, false, false, tracer);
                    return(buf);
                }
                ClassesProcessor.ClassNode node = (ClassesProcessor.ClassNode)DecompilerContext.GetProperty
                                                      (DecompilerContext.Current_Class_Node);
                if (node == null || !classname.Equals(node.classStruct.qualifiedName))
                {
                    buf.Append(DecompilerContext.GetImportCollector().GetShortNameInClassContext(ExprProcessor
                                                                                                 .BuildJavaClassName(classname)));
                }
            }
            else
            {
                if (instance != null && instance.type == Exprent.Exprent_Var)
                {
                    VarExprent     instVar = (VarExprent)instance;
                    VarVersionPair varPair = new VarVersionPair(instVar);
                    VarProcessor   varProc = instVar.GetProcessor();
                    if (varProc == null)
                    {
                        MethodWrapper currentMethod = (MethodWrapper)DecompilerContext.GetProperty(DecompilerContext
                                                                                                   .Current_Method_Wrapper);
                        if (currentMethod != null)
                        {
                            varProc = currentMethod.varproc;
                        }
                    }
                    string this_classname = null;
                    if (varProc != null)
                    {
                        this_classname = varProc.GetThisVars().GetOrNull(varPair);
                    }
                    if (this_classname != null)
                    {
                        isInstanceThis = true;
                        if (invocationTyp == Invoke_Special)
                        {
                            if (!classname.Equals(this_classname))
                            {
                                // TODO: direct comparison to the super class?
                                StructClass cl          = DecompilerContext.GetStructContext().GetClass(classname);
                                bool        isInterface = cl != null && cl.HasModifier(ICodeConstants.Acc_Interface);
                                super_qualifier = !isInterface ? this_classname : classname;
                            }
                        }
                    }
                }
                if (functype == Typ_General)
                {
                    if (super_qualifier != null)
                    {
                        TextUtil.WriteQualifiedSuper(buf, super_qualifier);
                    }
                    else if (instance != null)
                    {
                        TextBuffer res = instance.ToJava(indent, tracer);
                        if (IsUnboxingCall())
                        {
                            // we don't print the unboxing call - no need to bother with the instance wrapping / casting
                            buf.Append(res);
                            return(buf);
                        }
                        VarType rightType = instance.GetExprType();
                        VarType leftType  = new VarType(ICodeConstants.Type_Object, 0, classname);
                        if (rightType.Equals(VarType.Vartype_Object) && !leftType.Equals(rightType))
                        {
                            buf.Append("((").Append(ExprProcessor.GetCastTypeName(leftType)).Append(")");
                            if (instance.GetPrecedence() >= FunctionExprent.GetPrecedence(FunctionExprent.Function_Cast
                                                                                          ))
                            {
                                res.Enclose("(", ")");
                            }
                            buf.Append(res).Append(")");
                        }
                        else if (instance.GetPrecedence() > GetPrecedence())
                        {
                            buf.Append("(").Append(res).Append(")");
                        }
                        else
                        {
                            buf.Append(res);
                        }
                    }
                }
            }
            switch (functype)
            {
            case Typ_General:
            {
                if (VarExprent.Var_Nameless_Enclosure.Equals(buf.ToString()))
                {
                    buf = new TextBuffer();
                }
                if (buf.Length() > 0)
                {
                    buf.Append(".");
                }
                buf.Append(name);
                if (invocationTyp == Invoke_Dynamic)
                {
                    buf.Append("<invokedynamic>");
                }
                buf.Append("(");
                break;
            }

            case Typ_Clinit:
            {
                throw new Exception("Explicit invocation of " + ICodeConstants.Clinit_Name);
            }

            case Typ_Init:
            {
                if (super_qualifier != null)
                {
                    buf.Append("super(");
                }
                else if (isInstanceThis)
                {
                    buf.Append("this(");
                }
                else if (instance != null)
                {
                    buf.Append(instance.ToJava(indent, tracer)).Append(".<init>(");
                }
                else
                {
                    throw new Exception("Unrecognized invocation of " + ICodeConstants.Init_Name);
                }
                break;
            }
            }
            List <VarVersionPair> mask = null;
            bool isEnum = false;

            if (functype == Typ_Init)
            {
                ClassesProcessor.ClassNode newNode = DecompilerContext.GetClassProcessor().GetMapRootClasses
                                                         ().GetOrNull(classname);
                if (newNode != null)
                {
                    mask = ExprUtil.GetSyntheticParametersMask(newNode, stringDescriptor, lstParameters
                                                               .Count);
                    isEnum = newNode.classStruct.HasModifier(ICodeConstants.Acc_Enum) && DecompilerContext
                             .GetOption(IFernflowerPreferences.Decompile_Enum);
                }
            }
            BitSet setAmbiguousParameters = GetAmbiguousParameters();

            // omit 'new Type[] {}' for the last parameter of a vararg method call
            if (lstParameters.Count == [email protected] && IsVarArgCall())
            {
                Exprent lastParam = lstParameters[lstParameters.Count - 1];
                if (lastParam.type == Exprent_New && lastParam.GetExprType().arrayDim >= 1)
                {
                    ((NewExprent)lastParam).SetVarArgParam(true);
                }
            }
            bool firstParameter = true;
            int  start          = isEnum ? 2 : 0;

            for (int i = start; i < lstParameters.Count; i++)
            {
                if (mask == null || mask[i] == null)
                {
                    TextBuffer buff      = new TextBuffer();
                    bool       ambiguous = setAmbiguousParameters.Get(i);
                    // 'byte' and 'short' literals need an explicit narrowing type cast when used as a parameter
                    ExprProcessor.GetCastedExprent(lstParameters[i], descriptor.@params[i], buff, indent
                                                   , true, ambiguous, true, true, tracer);
                    // the last "new Object[0]" in the vararg call is not printed
                    if (buff.Length() > 0)
                    {
                        if (!firstParameter)
                        {
                            buf.Append(", ");
                        }
                        buf.Append(buff);
                    }
                    firstParameter = false;
                }
            }
            buf.Append(')');
            return(buf);
        }