public static java.lang.Class defineClass1(java.lang.ClassLoader thisClassLoader, string name, byte[] b, int off, int len, java.security.ProtectionDomain pd, string source)
{
// it appears the source argument is only used for trace messages in HotSpot. We'll just ignore it for now.
Profiler.Enter("ClassLoader.defineClass");
try
{
try
{
ClassLoaderWrapper classLoaderWrapper = ClassLoaderWrapper.GetClassLoaderWrapper(thisClassLoader);
ClassFileParseOptions cfp = ClassFileParseOptions.LineNumberTable;
if (classLoaderWrapper.EmitDebugInfo)
{
cfp |= ClassFileParseOptions.LocalVariableTable;
}
if (classLoaderWrapper.RelaxedClassNameValidation)
{
cfp |= ClassFileParseOptions.RelaxedClassNameValidation;
}
ClassFile classFile = new ClassFile(b, off, len, name, cfp);
if (name != null && classFile.Name != name)
{
#if !FIRST_PASS
throw new java.lang.NoClassDefFoundError(name + " (wrong name: " + classFile.Name + ")");
#endif
}
TypeWrapper type = classLoaderWrapper.DefineClass(classFile, pd);
return(type.ClassObject);
}
catch (RetargetableJavaException x)
{
throw x.ToJava();
}
}
finally
{
Profiler.Leave("ClassLoader.defineClass");
}
}
internal void Read(ClassFile classFile, string[] utf8_cp, Method method, BigEndianBinaryReader br, ClassFileParseOptions options)
{
max_stack = br.ReadUInt16();
max_locals = br.ReadUInt16();
uint code_length = br.ReadUInt32();
if(code_length > 65535)
{
throw new ClassFormatError("{0} (Invalid Code length {1})", classFile.Name, code_length);
}
Instruction[] instructions = new Instruction[code_length + 1];
int basePosition = br.Position;
int instructionIndex = 0;
try
{
BigEndianBinaryReader rdr = br.Section(code_length);
while(!rdr.IsAtEnd)
{
instructions[instructionIndex].Read((ushort)(rdr.Position - basePosition), rdr, classFile);
hasJsr |= instructions[instructionIndex].NormalizedOpCode == NormalizedByteCode.__jsr;
instructionIndex++;
}
// we add an additional nop instruction to make it easier for consumers of the code array
instructions[instructionIndex++].SetTermNop((ushort)(rdr.Position - basePosition));
}
catch(ClassFormatError x)
{
// any class format errors in the code block are actually verify errors
verifyError = x.Message;
}
this.instructions = new Instruction[instructionIndex];
Array.Copy(instructions, 0, this.instructions, 0, instructionIndex);
// build the pcIndexMap
int[] pcIndexMap = new int[this.instructions[instructionIndex - 1].PC + 1];
for(int i = 0; i < pcIndexMap.Length; i++)
{
pcIndexMap[i] = -1;
}
for(int i = 0; i < instructionIndex - 1; i++)
{
pcIndexMap[this.instructions[i].PC] = i;
}
// convert branch offsets to indexes
for(int i = 0; i < instructionIndex - 1; i++)
{
switch(this.instructions[i].NormalizedOpCode)
{
case NormalizedByteCode.__ifeq:
case NormalizedByteCode.__ifne:
case NormalizedByteCode.__iflt:
case NormalizedByteCode.__ifge:
case NormalizedByteCode.__ifgt:
case NormalizedByteCode.__ifle:
case NormalizedByteCode.__if_icmpeq:
case NormalizedByteCode.__if_icmpne:
case NormalizedByteCode.__if_icmplt:
case NormalizedByteCode.__if_icmpge:
case NormalizedByteCode.__if_icmpgt:
case NormalizedByteCode.__if_icmple:
case NormalizedByteCode.__if_acmpeq:
case NormalizedByteCode.__if_acmpne:
case NormalizedByteCode.__ifnull:
case NormalizedByteCode.__ifnonnull:
case NormalizedByteCode.__goto:
case NormalizedByteCode.__jsr:
this.instructions[i].SetTargetIndex(pcIndexMap[this.instructions[i].Arg1 + this.instructions[i].PC]);
break;
case NormalizedByteCode.__tableswitch:
case NormalizedByteCode.__lookupswitch:
this.instructions[i].MapSwitchTargets(pcIndexMap);
break;
}
}
// read exception table
ushort exception_table_length = br.ReadUInt16();
exception_table = new ExceptionTableEntry[exception_table_length];
for(int i = 0; i < exception_table_length; i++)
{
ushort start_pc = br.ReadUInt16();
ushort end_pc = br.ReadUInt16();
ushort handler_pc = br.ReadUInt16();
ushort catch_type = br.ReadUInt16();
if(start_pc >= end_pc
|| end_pc > code_length
|| handler_pc >= code_length
|| (catch_type != 0 && !classFile.SafeIsConstantPoolClass(catch_type)))
{
throw new ClassFormatError("Illegal exception table: {0}.{1}{2}", classFile.Name, method.Name, method.Signature);
}
classFile.MarkLinkRequiredConstantPoolItem(catch_type);
// if start_pc, end_pc or handler_pc is invalid (i.e. doesn't point to the start of an instruction),
// the index will be -1 and this will be handled by the verifier
int startIndex = pcIndexMap[start_pc];
int endIndex;
if (end_pc == code_length)
{
// it is legal for end_pc to point to just after the last instruction,
// but since there isn't an entry in our pcIndexMap for that, we have
// a special case for this
endIndex = instructionIndex - 1;
}
else
{
endIndex = pcIndexMap[end_pc];
}
int handlerIndex = pcIndexMap[handler_pc];
exception_table[i] = new ExceptionTableEntry(startIndex, endIndex, handlerIndex, catch_type, i);
}
ushort attributes_count = br.ReadUInt16();
for(int i = 0; i < attributes_count; i++)
{
switch(classFile.GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16()))
{
case "LineNumberTable":
if((options & ClassFileParseOptions.LineNumberTable) != 0)
{
BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
int count = rdr.ReadUInt16();
lineNumberTable = new LineNumberTableEntry[count];
for(int j = 0; j < count; j++)
{
lineNumberTable[j].start_pc = rdr.ReadUInt16();
lineNumberTable[j].line_number = rdr.ReadUInt16();
if(lineNumberTable[j].start_pc >= code_length)
{
throw new ClassFormatError("{0} (LineNumberTable has invalid pc)", classFile.Name);
}
}
if(!rdr.IsAtEnd)
{
throw new ClassFormatError("{0} (LineNumberTable attribute has wrong length)", classFile.Name);
}
}
else
{
br.Skip(br.ReadUInt32());
}
break;
case "LocalVariableTable":
if((options & ClassFileParseOptions.LocalVariableTable) != 0)
{
BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
int count = rdr.ReadUInt16();
localVariableTable = new LocalVariableTableEntry[count];
for(int j = 0; j < count; j++)
{
localVariableTable[j].start_pc = rdr.ReadUInt16();
localVariableTable[j].length = rdr.ReadUInt16();
localVariableTable[j].name = classFile.GetConstantPoolUtf8String(utf8_cp, rdr.ReadUInt16());
localVariableTable[j].descriptor = classFile.GetConstantPoolUtf8String(utf8_cp, rdr.ReadUInt16()).Replace('/', '.');
localVariableTable[j].index = rdr.ReadUInt16();
}
// NOTE we're intentionally not checking that we're at the end of the section
// (optional attributes shouldn't cause ClassFormatError)
}
else
{
br.Skip(br.ReadUInt32());
}
break;
default:
br.Skip(br.ReadUInt32());
break;
}
}
// build the argmap
string sig = method.Signature;
List<int> args = new List<int>();
int pos = 0;
if(!method.IsStatic)
{
args.Add(pos++);
}
for(int i = 1; sig[i] != ')'; i++)
{
args.Add(pos++);
switch(sig[i])
{
case 'L':
i = sig.IndexOf(';', i);
break;
case 'D':
case 'J':
args.Add(-1);
break;
case '[':
{
while(sig[i] == '[')
{
i++;
}
if(sig[i] == 'L')
{
i = sig.IndexOf(';', i);
}
break;
}
}
}
argmap = args.ToArray();
if(args.Count > max_locals)
{
throw new ClassFormatError("{0} (Arguments can't fit into locals)", classFile.Name);
}
}
internal Method(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options, BigEndianBinaryReader br) : base(classFile, utf8_cp, br)
{
// vmspec 4.6 says that all flags, except ACC_STRICT are ignored on <clinit>
// however, since Java 7 it does need to be marked static
if(ReferenceEquals(Name, StringConstants.CLINIT) && ReferenceEquals(Signature, StringConstants.SIG_VOID) && (classFile.MajorVersion < 51 || IsStatic))
{
access_flags &= Modifiers.Strictfp;
access_flags |= (Modifiers.Static | Modifiers.Private);
}
else
{
// LAMESPEC: vmspec 4.6 says that abstract methods can not be strictfp (and this makes sense), but
// javac (pre 1.5) is broken and marks abstract methods as strictfp (if you put the strictfp on the class)
if((ReferenceEquals(Name, StringConstants.INIT) && (IsStatic || IsSynchronized || IsFinal || IsAbstract || IsNative))
|| (IsPrivate && IsPublic) || (IsPrivate && IsProtected) || (IsPublic && IsProtected)
|| (IsAbstract && (IsFinal || IsNative || IsPrivate || IsStatic || IsSynchronized))
|| (classFile.IsInterface && (!IsPublic || !IsAbstract)))
{
throw new ClassFormatError("{0} (Illegal method modifiers: 0x{1:X})", classFile.Name, access_flags);
}
}
int attributes_count = br.ReadUInt16();
for(int i = 0; i < attributes_count; i++)
{
switch(classFile.GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16()))
{
case "Deprecated":
if(br.ReadUInt32() != 0)
{
throw new ClassFormatError("Invalid Deprecated attribute length");
}
flags |= FLAG_MASK_DEPRECATED;
break;
case "Code":
{
if(!code.IsEmpty)
{
throw new ClassFormatError("{0} (Duplicate Code attribute)", classFile.Name);
}
BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
code.Read(classFile, utf8_cp, this, rdr, options);
if(!rdr.IsAtEnd)
{
throw new ClassFormatError("{0} (Code attribute has wrong length)", classFile.Name);
}
break;
}
case "Exceptions":
{
if(exceptions != null)
{
throw new ClassFormatError("{0} (Duplicate Exceptions attribute)", classFile.Name);
}
BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
ushort count = rdr.ReadUInt16();
exceptions = new string[count];
for(int j = 0; j < count; j++)
{
exceptions[j] = classFile.GetConstantPoolClass(rdr.ReadUInt16());
}
if(!rdr.IsAtEnd)
{
throw new ClassFormatError("{0} (Exceptions attribute has wrong length)", classFile.Name);
}
break;
}
case "Signature":
if(classFile.MajorVersion < 49)
{
goto default;
}
if(br.ReadUInt32() != 2)
{
throw new ClassFormatError("Signature attribute has incorrect length");
}
signature = classFile.GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16());
break;
case "RuntimeVisibleAnnotations":
if(classFile.MajorVersion < 49)
{
goto default;
}
annotations = ReadAnnotations(br, classFile, utf8_cp);
break;
case "RuntimeVisibleParameterAnnotations":
{
if(classFile.MajorVersion < 49)
{
goto default;
}
if(low == null)
{
low = new LowFreqData();
}
BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
byte num_parameters = rdr.ReadByte();
low.parameterAnnotations = new object[num_parameters][];
for(int j = 0; j < num_parameters; j++)
{
ushort num_annotations = rdr.ReadUInt16();
low.parameterAnnotations[j] = new object[num_annotations];
for(int k = 0; k < num_annotations; k++)
{
low.parameterAnnotations[j][k] = ReadAnnotation(rdr, classFile, utf8_cp);
}
}
if(!rdr.IsAtEnd)
{
throw new ClassFormatError("{0} (RuntimeVisibleParameterAnnotations attribute has wrong length)", classFile.Name);
}
break;
}
case "AnnotationDefault":
{
if(classFile.MajorVersion < 49)
{
goto default;
}
if(low == null)
{
low = new LowFreqData();
}
BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
low.annotationDefault = ReadAnnotationElementValue(rdr, classFile, utf8_cp);
if(!rdr.IsAtEnd)
{
throw new ClassFormatError("{0} (AnnotationDefault attribute has wrong length)", classFile.Name);
}
break;
}
#if STATIC_COMPILER
case "RuntimeInvisibleAnnotations":
if(classFile.MajorVersion < 49)
{
goto default;
}
foreach(object[] annot in ReadAnnotations(br, classFile, utf8_cp))
{
if(annot[1].Equals("Likvm/lang/Internal;"))
{
if (classFile.IsInterface)
{
StaticCompiler.IssueMessage(Message.InterfaceMethodCantBeInternal, classFile.Name, this.Name, this.Signature);
}
else
{
this.access_flags &= ~Modifiers.AccessMask;
flags |= FLAG_MASK_INTERNAL;
}
}
if(annot[1].Equals("Likvm/internal/HasCallerID;"))
{
flags |= FLAG_HAS_CALLERID;
}
if(annot[1].Equals("Likvm/lang/DllExport;"))
{
string name = null;
int? ordinal = null;
for (int j = 2; j < annot.Length; j += 2)
{
if (annot[j].Equals("name") && annot[j + 1] is string)
{
name = (string)annot[j + 1];
}
else if (annot[j].Equals("ordinal") && annot[j + 1] is int)
{
ordinal = (int)annot[j + 1];
}
}
if (name != null && ordinal != null)
{
if (!IsStatic)
{
StaticCompiler.IssueMessage(Message.DllExportMustBeStaticMethod, classFile.Name, this.Name, this.Signature);
}
else
{
if (low == null)
{
low = new LowFreqData();
}
low.DllExportName = name;
low.DllExportOrdinal = ordinal.Value;
}
}
}
}
break;
#endif
default:
br.Skip(br.ReadUInt32());
break;
}
}
if(IsAbstract || IsNative)
{
if(!code.IsEmpty)
{
throw new ClassFormatError("Abstract or native method cannot have a Code attribute");
}
}
else
{
if(code.IsEmpty)
{
if(ReferenceEquals(this.Name, StringConstants.CLINIT))
{
code.verifyError = string.Format("Class {0}, method {1} signature {2}: No Code attribute", classFile.Name, this.Name, this.Signature);
return;
}
throw new ClassFormatError("Method has no Code attribute");
}
}
}
internal override void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
s = classFile.GetConstantPoolUtf8String(utf8_cp, string_index);
}
internal override void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
ConstantPoolItemNameAndType name_and_type = (ConstantPoolItemNameAndType)classFile.GetConstantPoolItem(name_and_type_index);
// if the constant pool items referred to were strings, GetConstantPoolItem returns null
if (name_and_type == null)
{
throw new ClassFormatError("Bad index in constant pool");
}
name = String.Intern(classFile.GetConstantPoolUtf8String(utf8_cp, name_and_type.name_index));
descriptor = String.Intern(classFile.GetConstantPoolUtf8String(utf8_cp, name_and_type.descriptor_index).Replace('/', '.'));
}
internal override void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
string descriptor = classFile.GetConstantPoolUtf8String(utf8_cp, signature_index);
if (descriptor == null || !IsValidMethodSig(descriptor))
{
throw new ClassFormatError("Invalid MethodType signature");
}
this.descriptor = String.Intern(descriptor.Replace('/', '.'));
}
internal override void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
switch ((RefKind)ref_kind)
{
case RefKind.getField:
case RefKind.getStatic:
case RefKind.putField:
case RefKind.putStatic:
cpi = classFile.GetConstantPoolItem(method_index) as ConstantPoolItemFieldref;
break;
case RefKind.invokeSpecial:
case RefKind.invokeVirtual:
case RefKind.invokeStatic:
case RefKind.newInvokeSpecial:
cpi = classFile.GetConstantPoolItem(method_index) as ConstantPoolItemMethodref;
break;
case RefKind.invokeInterface:
cpi = classFile.GetConstantPoolItem(method_index) as ConstantPoolItemInterfaceMethodref;
break;
}
if (cpi == null)
{
throw new ClassFormatError("Invalid constant pool item MethodHandle");
}
if (ReferenceEquals(cpi.Name, StringConstants.INIT) && Kind != RefKind.newInvokeSpecial)
{
throw new ClassFormatError("Bad method name");
}
}
internal override void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
if(classFile.GetConstantPoolUtf8String(utf8_cp, name_index) == null
|| classFile.GetConstantPoolUtf8String(utf8_cp, descriptor_index) == null)
{
throw new ClassFormatError("Illegal constant pool index");
}
}
internal ClassFile(byte[] buf, int offset, int length, string inputClassName, ClassFileParseOptions options)
{
try
{
BigEndianBinaryReader br = new BigEndianBinaryReader(buf, offset, length);
if(br.ReadUInt32() != 0xCAFEBABE)
{
throw new ClassFormatError("{0} (Bad magic number)", inputClassName);
}
ushort minorVersion = br.ReadUInt16();
ushort majorVersion = br.ReadUInt16();
if((majorVersion & FLAG_MASK_MAJORVERSION) != majorVersion
|| majorVersion < SupportedVersions.Minimum
|| majorVersion > SupportedVersions.Maximum
|| (majorVersion == SupportedVersions.Minimum && minorVersion < 3)
|| (majorVersion == SupportedVersions.Maximum && minorVersion != 0))
{
throw new UnsupportedClassVersionError(inputClassName + " (" + majorVersion + "." + minorVersion + ")");
}
flags = majorVersion;
int constantpoolcount = br.ReadUInt16();
constantpool = new ConstantPoolItem[constantpoolcount];
string[] utf8_cp = new string[constantpoolcount];
for(int i = 1; i < constantpoolcount; i++)
{
Constant tag = (Constant)br.ReadByte();
switch(tag)
{
case Constant.Class:
constantpool[i] = new ConstantPoolItemClass(br);
break;
case Constant.Double:
constantpool[i] = new ConstantPoolItemDouble(br);
i++;
break;
case Constant.Fieldref:
constantpool[i] = new ConstantPoolItemFieldref(br);
break;
case Constant.Float:
constantpool[i] = new ConstantPoolItemFloat(br);
break;
case Constant.Integer:
constantpool[i] = new ConstantPoolItemInteger(br);
break;
case Constant.InterfaceMethodref:
constantpool[i] = new ConstantPoolItemInterfaceMethodref(br);
break;
case Constant.Long:
constantpool[i] = new ConstantPoolItemLong(br);
i++;
break;
case Constant.Methodref:
constantpool[i] = new ConstantPoolItemMethodref(br);
break;
case Constant.NameAndType:
constantpool[i] = new ConstantPoolItemNameAndType(br);
break;
case Constant.MethodHandle:
if (majorVersion < 51)
goto default;
constantpool[i] = new ConstantPoolItemMethodHandle(br);
break;
case Constant.MethodType:
if (majorVersion < 51)
goto default;
constantpool[i] = new ConstantPoolItemMethodType(br);
break;
case Constant.InvokeDynamic:
if (majorVersion < 51)
goto default;
constantpool[i] = new ConstantPoolItemInvokeDynamic(br);
break;
case Constant.String:
constantpool[i] = new ConstantPoolItemString(br);
break;
case Constant.Utf8:
utf8_cp[i] = br.ReadString(inputClassName);
break;
default:
throw new ClassFormatError("{0} (Illegal constant pool type 0x{1:X})", inputClassName, tag);
}
}
for(int i = 1; i < constantpoolcount; i++)
{
if(constantpool[i] != null)
{
try
{
constantpool[i].Resolve(this, utf8_cp, options);
}
catch(ClassFormatError x)
{
// HACK at this point we don't yet have the class name, so any exceptions throw
// are missing the class name
throw new ClassFormatError("{0} ({1})", inputClassName, x.Message);
}
catch(IndexOutOfRangeException)
{
throw new ClassFormatError("{0} (Invalid constant pool item #{1})", inputClassName, i);
}
catch(InvalidCastException)
{
throw new ClassFormatError("{0} (Invalid constant pool item #{1})", inputClassName, i);
}
}
}
access_flags = (Modifiers)br.ReadUInt16();
// NOTE although the vmspec says (in 4.1) that interfaces must be marked abstract, earlier versions of
// javac (JDK 1.1) didn't do this, so the VM doesn't enforce this rule for older class files.
// NOTE although the vmspec implies (in 4.1) that ACC_SUPER is illegal on interfaces, it doesn't enforce this
// for older class files.
// (See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6320322)
if((IsInterface && IsFinal)
|| (IsAbstract && IsFinal)
|| (majorVersion >= 49 && IsAnnotation && !IsInterface)
|| (majorVersion >= 49 && IsInterface && (!IsAbstract || IsSuper || IsEnum)))
{
throw new ClassFormatError("{0} (Illegal class modifiers 0x{1:X})", inputClassName, access_flags);
}
this_class = br.ReadUInt16();
ValidateConstantPoolItemClass(inputClassName, this_class);
super_class = br.ReadUInt16();
ValidateConstantPoolItemClass(inputClassName, super_class);
if(IsInterface && (super_class == 0 || this.SuperClass != "java.lang.Object"))
{
throw new ClassFormatError("{0} (Interfaces must have java.lang.Object as superclass)", Name);
}
// most checks are already done by ConstantPoolItemClass.Resolve, but since it allows
// array types, we do need to check for that
if(this.Name[0] == '[')
{
throw new ClassFormatError("Bad name");
}
int interfaces_count = br.ReadUInt16();
interfaces = new ConstantPoolItemClass[interfaces_count];
for(int i = 0; i < interfaces.Length; i++)
{
int index = br.ReadUInt16();
if(index == 0 || index >= constantpool.Length)
{
throw new ClassFormatError("{0} (Illegal constant pool index)", Name);
}
ConstantPoolItemClass cpi = constantpool[index] as ConstantPoolItemClass;
if(cpi == null)
{
throw new ClassFormatError("{0} (Interface name has bad constant type)", Name);
}
interfaces[i] = cpi;
for(int j = 0; j < i; j++)
{
if(ReferenceEquals(interfaces[j].Name, cpi.Name))
{
throw new ClassFormatError("{0} (Repetitive interface name)", Name);
}
}
}
int fields_count = br.ReadUInt16();
fields = new Field[fields_count];
for(int i = 0; i < fields_count; i++)
{
fields[i] = new Field(this, utf8_cp, br);
string name = fields[i].Name;
if(!IsValidFieldName(name, majorVersion))
{
throw new ClassFormatError("{0} (Illegal field name \"{1}\")", Name, name);
}
for(int j = 0; j < i; j++)
{
if(ReferenceEquals(fields[j].Name, name) && ReferenceEquals(fields[j].Signature, fields[i].Signature))
{
throw new ClassFormatError("{0} (Repetitive field name/signature)", Name);
}
}
}
int methods_count = br.ReadUInt16();
methods = new Method[methods_count];
for(int i = 0; i < methods_count; i++)
{
methods[i] = new Method(this, utf8_cp, options, br);
string name = methods[i].Name;
string sig = methods[i].Signature;
if(!IsValidMethodName(name, majorVersion))
{
if(!ReferenceEquals(name, StringConstants.INIT) && !ReferenceEquals(name, StringConstants.CLINIT))
{
throw new ClassFormatError("{0} (Illegal method name \"{1}\")", Name, name);
}
if(!sig.EndsWith("V"))
{
throw new ClassFormatError("{0} (Method \"{1}\" has illegal signature \"{2}\")", Name, name, sig);
}
}
for(int j = 0; j < i; j++)
{
if(ReferenceEquals(methods[j].Name, name) && ReferenceEquals(methods[j].Signature, sig))
{
throw new ClassFormatError("{0} (Repetitive method name/signature)", Name);
}
}
}
int attributes_count = br.ReadUInt16();
for(int i = 0; i < attributes_count; i++)
{
switch(GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16()))
{
case "Deprecated":
if(br.ReadUInt32() != 0)
{
throw new ClassFormatError("Invalid Deprecated attribute length");
}
flags |= FLAG_MASK_DEPRECATED;
break;
case "SourceFile":
if(br.ReadUInt32() != 2)
{
throw new ClassFormatError("SourceFile attribute has incorrect length");
}
sourceFile = GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16());
break;
case "InnerClasses":
{
BigEndianBinaryReader rdr = br;
uint attribute_length = br.ReadUInt32();
ushort count = rdr.ReadUInt16();
if(this.MajorVersion >= 49 && attribute_length != 2 + count * (2 + 2 + 2 + 2))
{
throw new ClassFormatError("{0} (InnerClasses attribute has incorrect length)", this.Name);
}
innerClasses = new InnerClass[count];
for(int j = 0; j < innerClasses.Length; j++)
{
innerClasses[j].innerClass = rdr.ReadUInt16();
innerClasses[j].outerClass = rdr.ReadUInt16();
innerClasses[j].name = rdr.ReadUInt16();
innerClasses[j].accessFlags = (Modifiers)rdr.ReadUInt16();
if(innerClasses[j].innerClass != 0 && !(GetConstantPoolItem(innerClasses[j].innerClass) is ConstantPoolItemClass))
{
throw new ClassFormatError("{0} (inner_class_info_index has bad constant pool index)", this.Name);
}
if(innerClasses[j].outerClass != 0 && !(GetConstantPoolItem(innerClasses[j].outerClass) is ConstantPoolItemClass))
{
throw new ClassFormatError("{0} (outer_class_info_index has bad constant pool index)", this.Name);
}
if(innerClasses[j].name != 0 && utf8_cp[innerClasses[j].name] == null)
{
throw new ClassFormatError("{0} (inner class name has bad constant pool index)", this.Name);
}
if(innerClasses[j].innerClass == innerClasses[j].outerClass)
{
throw new ClassFormatError("{0} (Class is both inner and outer class)", this.Name);
}
if(innerClasses[j].innerClass != 0 && innerClasses[j].outerClass != 0)
{
MarkLinkRequiredConstantPoolItem(innerClasses[j].innerClass);
MarkLinkRequiredConstantPoolItem(innerClasses[j].outerClass);
}
}
break;
}
case "Signature":
if(majorVersion < 49)
{
goto default;
}
if(br.ReadUInt32() != 2)
{
throw new ClassFormatError("Signature attribute has incorrect length");
}
signature = GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16());
break;
case "EnclosingMethod":
if(majorVersion < 49)
{
goto default;
}
if(br.ReadUInt32() != 4)
{
throw new ClassFormatError("EnclosingMethod attribute has incorrect length");
}
else
{
int class_index = br.ReadUInt16();
int method_index = br.ReadUInt16();
if(method_index == 0)
{
enclosingMethod = new string[] {
GetConstantPoolClass(class_index),
null,
null
};
}
else
{
ConstantPoolItemNameAndType m = (ConstantPoolItemNameAndType)GetConstantPoolItem(method_index);
enclosingMethod = new string[] {
GetConstantPoolClass(class_index),
GetConstantPoolUtf8String(utf8_cp, m.name_index),
GetConstantPoolUtf8String(utf8_cp, m.descriptor_index).Replace('/', '.')
};
}
}
break;
case "RuntimeVisibleAnnotations":
if(majorVersion < 49)
{
goto default;
}
annotations = ReadAnnotations(br, this, utf8_cp);
break;
#if STATIC_COMPILER
case "RuntimeInvisibleAnnotations":
if(majorVersion < 49)
{
goto default;
}
foreach(object[] annot in ReadAnnotations(br, this, utf8_cp))
{
if(annot[1].Equals("Likvm/lang/Internal;"))
{
this.access_flags &= ~Modifiers.AccessMask;
flags |= FLAG_MASK_INTERNAL;
}
}
break;
#endif
case "BootstrapMethods":
if(majorVersion < 51)
{
goto default;
}
bootstrapMethods = ReadBootstrapMethods(br, this);
break;
case "IKVM.NET.Assembly":
if(br.ReadUInt32() != 2)
{
throw new ClassFormatError("IKVM.NET.Assembly attribute has incorrect length");
}
ikvmAssembly = GetConstantPoolUtf8String(utf8_cp, br.ReadUInt16());
break;
default:
br.Skip(br.ReadUInt32());
break;
}
}
// validate the invokedynamic entries to point into the bootstrapMethods array
for(int i = 1; i < constantpoolcount; i++)
{
ConstantPoolItemInvokeDynamic cpi;
if(constantpool[i] != null
&& (cpi = constantpool[i] as ConstantPoolItemInvokeDynamic) != null)
{
if(bootstrapMethods == null || cpi.BootstrapMethod >= bootstrapMethods.Length)
{
throw new ClassFormatError("Short length on BootstrapMethods in class file");
}
}
}
if(br.Position != offset + length)
{
throw new ClassFormatError("Extra bytes at the end of the class file");
}
}
catch(OverflowException)
{
throw new ClassFormatError("Truncated class file (or section)");
}
catch(IndexOutOfRangeException)
{
// TODO we should throw more specific errors
throw new ClassFormatError("Unspecified class file format error");
}
// catch(Exception x)
// {
// Console.WriteLine(x);
// FileStream fs = File.Create(inputClassName + ".broken");
// fs.Write(buf, offset, length);
// fs.Close();
// throw;
// }
}
internal override void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
name = classFile.GetConstantPoolUtf8String(utf8_cp, name_index);
if(name.Length > 0)
{
// We don't enforce the strict class name rules in the static compiler, since HotSpot doesn't enforce *any* rules on
// class names for the system (and boot) class loader. We still need to enforce the 1.5 restrictions, because we
// rely on those invariants.
#if !STATIC_COMPILER
if(classFile.MajorVersion < 49 && (options & ClassFileParseOptions.RelaxedClassNameValidation) == 0)
{
char prev = name[0];
if(Char.IsLetter(prev) || prev == '$' || prev == '_' || prev == '[' || prev == '/')
{
int skip = 1;
int end = name.Length;
if(prev == '[')
{
if(!IsValidFieldSig(name))
{
goto barf;
}
while(name[skip] == '[')
{
skip++;
}
if(name.EndsWith(";"))
{
end--;
}
}
for(int i = skip; i < end; i++)
{
char c = name[i];
if(!Char.IsLetterOrDigit(c) && c != '$' && c != '_' && (c != '/' || prev == '/'))
{
goto barf;
}
prev = c;
}
name = String.Intern(name.Replace('/', '.'));
return;
}
}
else
#endif
{
// since 1.5 the restrictions on class names have been greatly reduced
int end = name.Length;
if(name[0] == '[')
{
if(!IsValidFieldSig(name))
{
goto barf;
}
// the semicolon is only allowed at the end and IsValidFieldSig enforces this,
// but since invalidJava15Characters contains the semicolon, we decrement end
// to make the following check against invalidJava15Characters ignore the
// trailing semicolon.
if(name[end - 1] == ';')
{
end--;
}
}
if(name.IndexOfAny(invalidJava15Characters, 0, end) >= 0)
{
goto barf;
}
name = String.Intern(name.Replace('/', '.'));
return;
}
}
barf:
throw new ClassFormatError("Invalid class name \"{0}\"", name);
}
internal virtual void Resolve(ClassFile classFile, string[] utf8_cp, ClassFileParseOptions options)
{
}
