private static bool IsAnonymous(StructClass cl, StructClass enclosingCl)
{
// checking super class and interfaces
int[] interfaces = cl.GetInterfaces();
if (interfaces.Length > 0)
{
bool hasNonTrivialSuperClass = cl.superClass != null && !VarType.Vartype_Object.Equals
(new VarType(cl.superClass.GetString(), true));
if (hasNonTrivialSuperClass || interfaces.Length > 1)
{
// can't have multiple 'sources'
string message = "Inconsistent anonymous class definition: '" + cl.qualifiedName
+ "'. Multiple interfaces and/or super class defined.";
DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Warn
);
return(false);
}
}
else if (cl.superClass == null)
{
// neither interface nor super class defined
string message = "Inconsistent anonymous class definition: '" + cl.qualifiedName
+ "'. Neither interface nor super class defined.";
DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Warn
);
return(false);
}
// FIXME: check constructors
// FIXME: check enclosing class/method
ConstantPool pool = enclosingCl.GetPool();
int refCounter = 0;
bool refNotNew = false;
StructEnclosingMethodAttribute attribute = cl.GetAttribute(StructGeneralAttribute
.Attribute_Enclosing_Method);
string enclosingMethod = attribute != null?attribute.GetMethodName() : null;
// checking references in the enclosing class
foreach (StructMethod mt in enclosingCl.GetMethods())
{
if (enclosingMethod != null && !enclosingMethod.Equals(mt.GetName()))
{
continue;
}
try
{
mt.ExpandData();
InstructionSequence seq = mt.GetInstructionSequence();
if (seq != null)
{
int len = seq.Length();
for (int i = 0; i < len; i++)
{
Instruction instr = seq.GetInstr(i);
switch (instr.opcode)
{
case opc_checkcast:
case opc_instanceof:
{
if (cl.qualifiedName.Equals(pool.GetPrimitiveConstant(instr.Operand(0)).GetString
()))
{
refCounter++;
refNotNew = true;
}
break;
}
case opc_new:
case opc_anewarray:
case opc_multianewarray:
{
if (cl.qualifiedName.Equals(pool.GetPrimitiveConstant(instr.Operand(0)).GetString
()))
{
refCounter++;
}
break;
}
case opc_getstatic:
case opc_putstatic:
{
if (cl.qualifiedName.Equals(pool.GetLinkConstant(instr.Operand(0)).classname))
{
refCounter++;
refNotNew = true;
}
break;
}
}
}
}
mt.ReleaseResources();
}
catch (IOException)
{
string message = "Could not read method while checking anonymous class definition: '"
+ enclosingCl.qualifiedName + "', '" + InterpreterUtil.MakeUniqueKey(mt.GetName
(), mt.GetDescriptor()) + "'";
DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Warn
);
return(false);
}
if (refCounter > 1 || refNotNew)
{
string message = "Inconsistent references to the class '" + cl.qualifiedName + "' which is supposed to be anonymous";
DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Warn
);
return(false);
}
}
return(true);
}
public virtual void LoadClasses(IIdentifierRenamer renamer)
{
Dictionary <string, ClassesProcessor.Inner> mapInnerClasses = new Dictionary <string
, ClassesProcessor.Inner>();
Dictionary <string, HashSet <string> > mapNestedClassReferences = new Dictionary <string
, HashSet <string> >();
Dictionary <string, HashSet <string> > mapEnclosingClassReferences = new Dictionary
<string, HashSet <string> >();
Dictionary <string, string> mapNewSimpleNames = new Dictionary <string, string>();
bool bDecompileInner = DecompilerContext.GetOption(IFernflowerPreferences.Decompile_Inner
);
bool verifyAnonymousClasses = DecompilerContext.GetOption(IFernflowerPreferences
.Verify_Anonymous_Classes);
// create class nodes
foreach (StructClass cl in context.GetClasses().Values)
{
if (cl.IsOwn() && !mapRootClasses.ContainsKey(cl.qualifiedName))
{
if (bDecompileInner)
{
StructInnerClassesAttribute inner = cl.GetAttribute(StructGeneralAttribute.Attribute_Inner_Classes
);
if (inner != null)
{
foreach (StructInnerClassesAttribute.Entry entry in inner.GetEntries())
{
string innerName = entry.innerName;
// original simple name
string simpleName = entry.simpleName;
string savedName = mapNewSimpleNames.GetOrNull(innerName);
if (savedName != null)
{
simpleName = savedName;
}
else if (simpleName != null && renamer != null && renamer.ToBeRenamed(IIdentifierRenamer.Type
.Element_Class, simpleName, null, null))
{
simpleName = renamer.GetNextClassName(innerName, simpleName);
Sharpen.Collections.Put(mapNewSimpleNames, innerName, simpleName);
}
ClassesProcessor.Inner rec = new ClassesProcessor.Inner();
rec.simpleName = simpleName;
rec.type = entry.simpleNameIdx == 0 ? ClassesProcessor.ClassNode.Class_Anonymous :
entry.outerNameIdx == 0 ? ClassesProcessor.ClassNode.Class_Local : ClassesProcessor.ClassNode
.Class_Member;
rec.accessFlags = entry.accessFlags;
// enclosing class
string enclClassName = entry.outerNameIdx != 0 ? entry.enclosingName : cl.qualifiedName;
if (enclClassName == null || innerName.Equals(enclClassName))
{
continue;
}
// invalid name or self reference
if (rec.type == ClassesProcessor.ClassNode.Class_Member && !innerName.Equals(enclClassName
+ '$' + entry.simpleName))
{
continue;
}
// not a real inner class
StructClass enclosingClass = context.GetClasses().GetOrNull(enclClassName);
if (enclosingClass != null && enclosingClass.IsOwn())
{
// own classes only
ClassesProcessor.Inner existingRec = mapInnerClasses.GetOrNull(innerName);
if (existingRec == null)
{
Sharpen.Collections.Put(mapInnerClasses, innerName, rec);
}
else if (!ClassesProcessor.Inner.Equal(existingRec, rec))
{
string message = "Inconsistent inner class entries for " + innerName + "!";
DecompilerContext.GetLogger().WriteMessage(message, IFernflowerLogger.Severity.Warn
);
}
// reference to the nested class
mapNestedClassReferences.ComputeIfAbsent(enclClassName, (string k) => new HashSet
<string>()).Add(innerName);
// reference to the enclosing class
mapEnclosingClassReferences.ComputeIfAbsent(innerName, (string k) => new HashSet <
string>()).Add(enclClassName);
}
}
}
}
ClassesProcessor.ClassNode node = new ClassesProcessor.ClassNode(ClassesProcessor.ClassNode
.Class_Root, cl);
node.access = cl.GetAccessFlags();
Sharpen.Collections.Put(mapRootClasses, cl.qualifiedName, node);
}
}
if (bDecompileInner)
{
// connect nested classes
foreach (KeyValuePair <string, ClassesProcessor.ClassNode> ent in mapRootClasses)
{
// root class?
if (!mapInnerClasses.ContainsKey(ent.Key))
{
HashSet <string> setVisited = new HashSet <string>();
LinkedList <string> stack = new LinkedList <string>();
stack.AddLast(ent.Key);
setVisited.Add(ent.Key);
while (!(stack.Count == 0))
{
string superClass = Sharpen.Collections.RemoveFirst(stack);
ClassesProcessor.ClassNode superNode = mapRootClasses.GetOrNull(superClass);
HashSet <string> setNestedClasses = mapNestedClassReferences.GetOrNull(superClass);
if (setNestedClasses != null)
{
StructClass scl = superNode.classStruct;
StructInnerClassesAttribute inner = scl.GetAttribute(StructGeneralAttribute.Attribute_Inner_Classes
);
if (inner == null || (inner.GetEntries().Count == 0))
{
DecompilerContext.GetLogger().WriteMessage(superClass + " does not contain inner classes!"
, IFernflowerLogger.Severity.Warn);
continue;
}
foreach (StructInnerClassesAttribute.Entry entry in inner.GetEntries())
{
string nestedClass = entry.innerName;
if (!setNestedClasses.Contains(nestedClass))
{
continue;
}
if (!setVisited.Add(nestedClass))
{
continue;
}
ClassesProcessor.ClassNode nestedNode = mapRootClasses.GetOrNull(nestedClass);
if (nestedNode == null)
{
DecompilerContext.GetLogger().WriteMessage("Nested class " + nestedClass + " missing!"
, IFernflowerLogger.Severity.Warn);
continue;
}
ClassesProcessor.Inner rec = mapInnerClasses.GetOrNull(nestedClass);
//if ((Integer)arr[2] == ClassNode.CLASS_MEMBER) {
// FIXME: check for consistent naming
//}
nestedNode.simpleName = rec.simpleName;
nestedNode.type = rec.type;
nestedNode.access = rec.accessFlags;
// sanity checks of the class supposed to be anonymous
if (verifyAnonymousClasses && nestedNode.type == ClassesProcessor.ClassNode.Class_Anonymous &&
!IsAnonymous(nestedNode.classStruct, scl))
{
nestedNode.type = ClassesProcessor.ClassNode.Class_Local;
}
if (nestedNode.type == ClassesProcessor.ClassNode.Class_Anonymous)
{
StructClass cl = nestedNode.classStruct;
// remove static if anonymous class (a common compiler bug)
nestedNode.access &= ~ICodeConstants.Acc_Static;
int[] interfaces = cl.GetInterfaces();
if (interfaces.Length > 0)
{
nestedNode.anonymousClassType = new VarType(cl.GetInterface(0), true);
}
else
{
nestedNode.anonymousClassType = new VarType(cl.superClass.GetString(), true);
}
}
else if (nestedNode.type == ClassesProcessor.ClassNode.Class_Local)
{
// only abstract and final are permitted (a common compiler bug)
nestedNode.access &= (ICodeConstants.Acc_Abstract | ICodeConstants.Acc_Final);
}
superNode.nested.Add(nestedNode);
nestedNode.parent = superNode;
Sharpen.Collections.AddAll(nestedNode.enclosingClasses, mapEnclosingClassReferences
.GetOrNull(nestedClass));
stack.AddLast(nestedClass);
}
}
}
}
}
}
}
private static string IsClass14Invocation(Exprent exprent, ClassWrapper wrapper,
MethodWrapper meth)
{
if (exprent.type == Exprent.Exprent_Function)
{
FunctionExprent fexpr = (FunctionExprent)exprent;
if (fexpr.GetFuncType() == FunctionExprent.Function_Iif)
{
if (fexpr.GetLstOperands()[0].type == Exprent.Exprent_Function)
{
FunctionExprent headexpr = (FunctionExprent)fexpr.GetLstOperands()[0];
if (headexpr.GetFuncType() == FunctionExprent.Function_Eq)
{
if (headexpr.GetLstOperands()[0].type == Exprent.Exprent_Field && headexpr.GetLstOperands
()[1].type == Exprent.Exprent_Const && ((ConstExprent)headexpr.GetLstOperands()[
1]).GetConstType().Equals(VarType.Vartype_Null))
{
FieldExprent field = (FieldExprent)headexpr.GetLstOperands()[0];
ClassesProcessor.ClassNode fieldnode = DecompilerContext.GetClassProcessor().GetMapRootClasses
().GetOrNull(field.GetClassname());
if (fieldnode != null && fieldnode.classStruct.qualifiedName.Equals(wrapper.GetClassStruct
().qualifiedName))
{
// source class
StructField fd = wrapper.GetClassStruct().GetField(field.GetName(), field.GetDescriptor
().descriptorString);
// FIXME: can be null! why??
if (fd != null && fd.HasModifier(ICodeConstants.Acc_Static) && (fd.IsSynthetic() ||
DecompilerContext.GetOption(IFernflowerPreferences.Synthetic_Not_Set)))
{
if (fexpr.GetLstOperands()[1].type == Exprent.Exprent_Assignment && fexpr.GetLstOperands
()[2].Equals(field))
{
AssignmentExprent asexpr = (AssignmentExprent)fexpr.GetLstOperands()[1];
if (asexpr.GetLeft().Equals(field) && asexpr.GetRight().type == Exprent.Exprent_Invocation)
{
InvocationExprent invexpr = (InvocationExprent)asexpr.GetRight();
if (invexpr.GetClassname().Equals(wrapper.GetClassStruct().qualifiedName) && invexpr
.GetName().Equals(meth.methodStruct.GetName()) && invexpr.GetStringDescriptor().
Equals(meth.methodStruct.GetDescriptor()))
{
if (invexpr.GetLstParameters()[0].type == Exprent.Exprent_Const)
{
wrapper.GetHiddenMembers().Add(InterpreterUtil.MakeUniqueKey(fd.GetName(), fd.GetDescriptor
()));
// hide synthetic field
return(((ConstExprent)invexpr.GetLstParameters()[0]).GetValue().ToString());
}
}
}
}
}
}
}
}
}
}
}
return(null);
}
private static bool ReplaceAssertion(Statement parent, IfStatement stat, string classname
, string key)
{
bool throwInIf = true;
Statement ifstat = stat.GetIfstat();
InvocationExprent throwError = IsAssertionError(ifstat);
if (throwError == null)
{
//check else:
Statement elsestat = stat.GetElsestat();
throwError = IsAssertionError(elsestat);
if (throwError == null)
{
return(false);
}
else
{
throwInIf = false;
}
}
object[] exprres = GetAssertionExprent(stat.GetHeadexprent().GetCondition().Copy(
), classname, key, throwInIf);
if (!(bool)exprres[1])
{
return(false);
}
List <Exprent> lstParams = new List <Exprent>();
Exprent ascond = null;
Exprent retcond = null;
if (throwInIf)
{
if (exprres[0] != null)
{
ascond = new FunctionExprent(FunctionExprent.Function_Bool_Not, (Exprent)exprres[
0], throwError.bytecode);
retcond = SecondaryFunctionsHelper.PropagateBoolNot(ascond);
}
}
else
{
ascond = (Exprent)exprres[0];
retcond = ascond;
}
lstParams.Add(retcond == null ? ascond : retcond);
if (!(throwError.GetLstParameters().Count == 0))
{
lstParams.Add(throwError.GetLstParameters()[0]);
}
AssertExprent asexpr = new AssertExprent(lstParams);
Statement newstat = new BasicBlockStatement(new BasicBlock(DecompilerContext.GetCounterContainer
().GetCounterAndIncrement(CounterContainer.Statement_Counter)));
newstat.SetExprents(Sharpen.Arrays.AsList(new Exprent[] { asexpr }));
Statement first = stat.GetFirst();
if (stat.iftype == IfStatement.Iftype_Ifelse || (first.GetExprents() != null && !
(first.GetExprents().Count == 0)))
{
first.RemoveSuccessor(stat.GetIfEdge());
first.RemoveSuccessor(stat.GetElseEdge());
List <Statement> lstStatements = new List <Statement>();
if (first.GetExprents() != null && !(first.GetExprents().Count == 0))
{
lstStatements.Add(first);
}
lstStatements.Add(newstat);
if (stat.iftype == IfStatement.Iftype_Ifelse)
{
if (throwInIf)
{
lstStatements.Add(stat.GetElsestat());
}
else
{
lstStatements.Add(stat.GetIfstat());
}
}
SequenceStatement sequence = new SequenceStatement(lstStatements);
sequence.SetAllParent();
for (int i = 0; i < sequence.GetStats().Count - 1; i++)
{
sequence.GetStats()[i].AddSuccessor(new StatEdge(StatEdge.Type_Regular, sequence.
GetStats()[i], sequence.GetStats()[i + 1]));
}
if (stat.iftype == IfStatement.Iftype_Ifelse || !throwInIf)
{
Statement stmts;
if (throwInIf)
{
stmts = stat.GetElsestat();
}
else
{
stmts = stat.GetIfstat();
}
List <StatEdge> lstSuccs = stmts.GetAllSuccessorEdges();
if (!(lstSuccs.Count == 0))
{
StatEdge endedge = lstSuccs[0];
if (endedge.closure == stat)
{
sequence.AddLabeledEdge(endedge);
}
}
}
newstat = sequence;
}
Sharpen.Collections.AddAll(newstat.GetVarDefinitions(), stat.GetVarDefinitions());
parent.ReplaceStatement(stat, newstat);
return(true);
}
public virtual void ClearContext()
{
DecompilerContext.SetCurrentContext(null);
}
private static void ExtractDynamicInitializers(ClassWrapper wrapper)
{
StructClass cl = wrapper.GetClassStruct();
bool isAnonymous = DecompilerContext.GetClassProcessor().GetMapRootClasses().GetOrNull
(cl.qualifiedName).type == ClassesProcessor.ClassNode.Class_Anonymous;
List <List <Exprent> > lstFirst = new List <List <Exprent> >();
List <MethodWrapper> lstMethodWrappers = new List <MethodWrapper>();
foreach (MethodWrapper method in wrapper.GetMethods())
{
if (ICodeConstants.Init_Name.Equals(method.methodStruct.GetName()) && method.root
!= null)
{
// successfully decompiled constructor
Statement firstData = Statements.FindFirstData(method.root);
if (firstData == null || (firstData.GetExprents().Count == 0))
{
return;
}
lstFirst.Add(firstData.GetExprents());
lstMethodWrappers.Add(method);
Exprent exprent = firstData.GetExprents()[0];
if (!isAnonymous)
{
// FIXME: doesn't make sense
if (exprent.type != Exprent.Exprent_Invocation || !Statements.IsInvocationInitConstructor
((InvocationExprent)exprent, method, wrapper, false))
{
return;
}
}
}
}
if ((lstFirst.Count == 0))
{
return;
}
while (true)
{
string fieldWithDescr = null;
Exprent value = null;
for (int i = 0; i < lstFirst.Count; i++)
{
List <Exprent> lst = lstFirst[i];
if (lst.Count < (isAnonymous ? 1 : 2))
{
return;
}
Exprent exprent = lst[isAnonymous ? 0 : 1];
bool found = false;
if (exprent.type == Exprent.Exprent_Assignment)
{
AssignmentExprent assignExpr = (AssignmentExprent)exprent;
if (assignExpr.GetLeft().type == Exprent.Exprent_Field)
{
FieldExprent fExpr = (FieldExprent)assignExpr.GetLeft();
if (!fExpr.IsStatic() && fExpr.GetClassname().Equals(cl.qualifiedName) && cl.HasField
(fExpr.GetName(), fExpr.GetDescriptor().descriptorString))
{
// check for the physical existence of the field. Could be defined in a superclass.
if (IsExprentIndependent(assignExpr.GetRight(), lstMethodWrappers[i]))
{
string fieldKey = InterpreterUtil.MakeUniqueKey(fExpr.GetName(), fExpr.GetDescriptor
().descriptorString);
if (fieldWithDescr == null)
{
fieldWithDescr = fieldKey;
value = assignExpr.GetRight();
}
else if (!fieldWithDescr.Equals(fieldKey) || !value.Equals(assignExpr.GetRight()))
{
return;
}
found = true;
}
}
}
}
if (!found)
{
return;
}
}
if (!wrapper.GetDynamicFieldInitializers().ContainsKey(fieldWithDescr))
{
wrapper.GetDynamicFieldInitializers().AddWithKey(value, fieldWithDescr);
foreach (List <Exprent> lst in lstFirst)
{
lst.RemoveAtReturningValue(isAnonymous ? 0 : 1);
}
}
else
{
return;
}
}
}
public static void SetCurrentContext(DecompilerContext context)
{
currentContext.Value = context;
}