/// <summary>
/// Read a Code attribute
/// </summary>
private CodeAttribute ReadCodeAttribute(MethodDefinition method, ConstantPool cp)
{
var maxStack = stream.ReadU2();
var maxLocals = stream.ReadU2();
var codeLength = (int)stream.ReadU4();
var code = new byte[codeLength];
stream.Read(code, 0, codeLength);
var result = new CodeAttribute(method, cp, maxStack, maxLocals, code);
var ecount = stream.ReadU2();
for (var i = 0; i < ecount; i++)
{
var startPC = stream.ReadU2();
var endPC = stream.ReadU2();
var handlerPC = stream.ReadU2();
var catchTypeIndex = stream.ReadU2();
var catchType = (catchTypeIndex != 0) ? cp.GetEntry <ConstantPoolClass>(catchTypeIndex).Type : null;
result.Add(new ExceptionHandler(result, startPC, endPC, handlerPC, catchType));
}
ReadAttributes(cp, result);
return(result);
}
/// <summary>
/// Read a InnerClasses attribute
/// </summary>
private InnerClassesAttribute ReadInnerClassesAttribute(ConstantPool cp)
{
var result = new InnerClassesAttribute();
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var innerClassIndex = stream.ReadU2();
var innerClass = (innerClassIndex != 0) ? cp.GetEntry <ConstantPoolClass>(innerClassIndex).Type : null;
var outerClassIndex = stream.ReadU2();
var outerClass = (outerClassIndex != 0) ? cp.GetEntry <ConstantPoolClass>(outerClassIndex).Type : null;
var innerNameIndex = stream.ReadU2();
var innerName = (innerNameIndex != 0) ? cp.GetEntry <ConstantPoolUtf8>(innerNameIndex).Value : null;
var accessFlags = (NestedClassAccessFlags)stream.ReadU2();
result.Classes.Add(new InnerClass(cp.Loader, innerClass, outerClass, innerName, accessFlags));
}
return(result);
}
/// <summary>
/// Read a LocalVariableTable attribute
/// </summary>
private LocalVariableTableAttribute ReadLocalVariableTableAttribute(ConstantPool cp)
{
var result = new LocalVariableTableAttribute();
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var startPC = stream.ReadU2();
var length = stream.ReadU2();
var nameIndex = stream.ReadU2();
var name = cp.GetEntry <ConstantPoolUtf8>(nameIndex).Value;
var descriptorIndex = stream.ReadU2();
var descriptor = cp.GetEntry <ConstantPoolUtf8>(descriptorIndex).Value;
var variableType = Descriptors.ParseFieldType(descriptor);
var index = stream.ReadU2();
result.Variables.Add(new LocalVariable(startPC, length, name, variableType, index));
}
return(result);
}
/// <summary>
/// Read a Exceptions attribute
/// </summary>
private ExceptionsAttribute ReadExceptionsAttribute(ConstantPool cp)
{
var result = new ExceptionsAttribute();
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var index = stream.ReadU2();
result.Exceptions.Add(cp.GetEntry <ConstantPoolClass>(index).Type);
}
return(result);
}
public override void ProcessFromConstantPool(ConstantPool constantPool)
{
switch (ReferenceKind)
{
case ReferenceKindType.GetField:
case ReferenceKindType.GetStatic:
case ReferenceKindType.PutField:
case ReferenceKindType.PutStatic:
Reference = constantPool.GetEntry <FieldReferenceEntry>(referenceIndex);
break;
case ReferenceKindType.InvokeVirtual:
case ReferenceKindType.NewInvokeSpecial:
Reference = constantPool.GetEntry <MethodReferenceEntry>(referenceIndex);
break;
case ReferenceKindType.InvokeStatic:
case ReferenceKindType.InvokeSpecial:
try
{
Reference = constantPool.GetEntry <MethodReferenceEntry>(referenceIndex);
}
catch (InvalidCastException)
{
Reference = constantPool.GetEntry <InterfaceMethodReferenceEntry>(referenceIndex);
}
break;
case ReferenceKindType.InvokeReference:
Reference = constantPool.GetEntry <InterfaceMethodReferenceEntry>(referenceIndex);
break;
default:
throw new ArgumentOutOfRangeException(nameof(ReferenceKind));
}
}
/// <summary>
/// Read the header
/// </summary>
internal void ReadHeader(ClassFile cf)
{
var magic = stream.ReadU4();
if (magic != ClassFile.Magic)
{
throw new Dot42Exception("Invalid magic");
}
cf.MinorVersion = stream.ReadU2();
cf.MajorVersion = stream.ReadU2();
var cpCount = stream.ReadU2();
var cp = new ConstantPool(cpCount, cf.Loader);
for (var i = 1; i < cpCount; i++)
{
var tag = (ConstantPoolTags)stream.ReadU1();
ConstantPoolEntry entry;
int tmp;
switch (tag)
{
case ConstantPoolTags.Class:
entry = new ConstantPoolClass(cp, stream.ReadU2());
break;
case ConstantPoolTags.Fieldref:
tmp = stream.ReadU2();
entry = new ConstantPoolFieldRef(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.Methodref:
tmp = stream.ReadU2();
entry = new ConstantPoolMethodRef(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.InterfaceMethodref:
tmp = stream.ReadU2();
entry = new ConstantPoolInterfaceMethodRef(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.String:
entry = new ConstantPoolString(cp, stream.ReadU2());
break;
case ConstantPoolTags.Integer:
entry = new ConstantPoolInteger(cp, stream.ReadS4());
break;
case ConstantPoolTags.Float:
entry = new ConstantPoolFloat(cp, stream.ReadF4());
break;
case ConstantPoolTags.Long:
entry = new ConstantPoolLong(cp, stream.ReadS8());
break;
case ConstantPoolTags.Double:
entry = new ConstantPoolDouble(cp, stream.ReadF8());
break;
case ConstantPoolTags.NameAndType:
tmp = stream.ReadU2();
entry = new ConstantPoolNameAndType(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.Utf8:
tmp = stream.ReadU2();
entry = new ConstantPoolUtf8(cp, stream.ReadUTF8(tmp));
break;
default:
throw new Dot42Exception("Unknown constant pool tag: " + (int)tag);
}
cp[i] = entry;
if ((tag == ConstantPoolTags.Double) || (tag == ConstantPoolTags.Long))
{
i++;
}
}
cf.ClassAccessFlags = (ClassAccessFlags)stream.ReadU2();
var index = stream.ReadU2();
cf.ClassName = cp.GetEntry <ConstantPoolClass>(index).Name;
index = stream.ReadU2();
cf.SuperClass = (index == 0) ? null : new ObjectTypeReference(cp.GetEntry <ConstantPoolClass>(index).Name, null);
// Interfaces
var icount = stream.ReadU2();
var interfaces = new string[icount];
for (var i = 0; i < icount; i++)
{
index = stream.ReadU2();
interfaces[i] = cp.GetEntry <ConstantPoolClass>(index).Name;
}
cf.Interfaces = interfaces.Select(x => new ObjectTypeReference(x, null)).ToArray();
// Fields
var fcount = stream.ReadU2();
for (var i = 0; i < fcount; i++)
{
var accessFlags = (FieldAccessFlags)stream.ReadU2();
var nameIndex = stream.ReadU2();
var descriptorIndex = stream.ReadU2();
var name = cp.GetEntry <ConstantPoolUtf8>(nameIndex).Value;
var descriptor = cp.GetEntry <ConstantPoolUtf8>(descriptorIndex).Value;
var field = new FieldDefinition(cf, accessFlags, name, descriptor, null);
ReadAttributes(cp, field);
cf.Fields.Add(field);
}
// Methods
var mcount = stream.ReadU2();
for (var i = 0; i < mcount; i++)
{
var accessFlags = (MethodAccessFlags)stream.ReadU2();
var nameIndex = stream.ReadU2();
var descriptorIndex = stream.ReadU2();
var name = cp.GetEntry <ConstantPoolUtf8>(nameIndex).Value;
var descriptor = cp.GetEntry <ConstantPoolUtf8>(descriptorIndex).Value;
var method = new MethodDefinition(cf, accessFlags, name, descriptor, null);
ReadAttributes(cp, method);
cf.Methods.Add(method);
}
// Attributes
ReadAttributes(cp, cf);
}
/// <summary>
/// Read a list of attributes
/// </summary>
private void ReadAttributes(ConstantPool cp, IModifiableAttributeProvider provider)
{
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var nameIndex = stream.ReadU2();
var name = cp.GetEntry <ConstantPoolUtf8>(nameIndex).Value;
var length = stream.ReadU4();
Attribute attr;
int tmp;
switch (name)
{
case CodeAttribute.AttributeName:
attr = ReadCodeAttribute((MethodDefinition)provider, cp);
break;
case ConstantValueAttribute.AttributeName:
tmp = stream.ReadU2();
attr = new ConstantValueAttribute(((IConstantPoolValue)cp[tmp]).Value);
break;
case ExceptionsAttribute.AttributeName:
attr = ReadExceptionsAttribute(cp);
break;
case InnerClassesAttribute.AttributeName:
attr = ReadInnerClassesAttribute(cp);
break;
case SyntheticAttribute.AttributeName:
attr = new SyntheticAttribute();
break;
case SourceFileAttribute.AttributeName:
tmp = stream.ReadU2();
attr = new SourceFileAttribute(cp.GetEntry <ConstantPoolUtf8>(tmp).Value);
break;
case LineNumberTableAttribute.AttributeName:
attr = ReadLineNumberTableAttribute();
break;
case LocalVariableTableAttribute.AttributeName:
attr = ReadLocalVariableTableAttribute(cp);
break;
case DeprecatedAttribute.AttributeName:
attr = new DeprecatedAttribute();
break;
case OverrideAttribute.AttributeName:
attr = new OverrideAttribute();
break;
case SignatureAttribute.AttributeName:
tmp = stream.ReadU2();
attr = new SignatureAttribute(cp.GetEntry <ConstantPoolUtf8>(tmp).Value);
break;
case RuntimeVisibleAnnotationsAttribute.AttributeName:
attr = new RuntimeVisibleAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case RuntimeInvisibleAnnotationsAttribute.AttributeName:
attr = new RuntimeInvisibleAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case RuntimeVisibleParameterAnnotationsAttribute.AttributeName:
attr = new RuntimeVisibleParameterAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case RuntimeInvisibleParameterAnnotationsAttribute.AttributeName:
attr = new RuntimeInvisibleParameterAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case AnnotationDefaultAttribute.AttributeName:
attr = new AnnotationDefaultAttribute(ReadElementValue(cp));
break;
default:
stream.Skip(length);
attr = new UnknownAttribute(name);
break;
}
provider.Add(attr);
}
provider.AttributesLoaded();
}
/// <summary>
/// Gets the containing pool
/// </summary>
protected T GetEntry <T>(int index)
where T : ConstantPoolEntry
{
return(constantPool.GetEntry <T>(index));
}
/// <summary>
/// Read a LocalVariableTable attribute
/// </summary>
private LocalVariableTableAttribute ReadLocalVariableTableAttribute(ConstantPool cp)
{
var result = new LocalVariableTableAttribute();
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var startPC = stream.ReadU2();
var length = stream.ReadU2();
var nameIndex = stream.ReadU2();
var name = cp.GetEntry<ConstantPoolUtf8>(nameIndex).Value;
var descriptorIndex = stream.ReadU2();
var descriptor = cp.GetEntry<ConstantPoolUtf8>(descriptorIndex).Value;
var variableType = Descriptors.ParseFieldType(descriptor);
var index = stream.ReadU2();
result.Variables.Add(new LocalVariable(startPC, length, name, variableType, index));
}
return result;
}
/// <summary>
/// Read a InnerClasses attribute
/// </summary>
private InnerClassesAttribute ReadInnerClassesAttribute(ConstantPool cp)
{
var result = new InnerClassesAttribute();
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var innerClassIndex = stream.ReadU2();
var innerClass = (innerClassIndex != 0) ? cp.GetEntry<ConstantPoolClass>(innerClassIndex).Type : null;
var outerClassIndex = stream.ReadU2();
var outerClass = (outerClassIndex != 0) ? cp.GetEntry<ConstantPoolClass>(outerClassIndex).Type : null;
var innerNameIndex = stream.ReadU2();
var innerName = (innerNameIndex != 0) ? cp.GetEntry<ConstantPoolUtf8>(innerNameIndex).Value : null;
var accessFlags = (NestedClassAccessFlags)stream.ReadU2();
result.Classes.Add(new InnerClass(cp.Loader, innerClass, outerClass, innerName, accessFlags));
}
return result;
}
/// <summary>
/// Read a Exceptions attribute
/// </summary>
private ExceptionsAttribute ReadExceptionsAttribute(ConstantPool cp)
{
var result = new ExceptionsAttribute();
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var index = stream.ReadU2();
result.Exceptions.Add(cp.GetEntry<ConstantPoolClass>(index).Type);
}
return result;
}
/// <summary>
/// Read the header
/// </summary>
internal void ReadHeader(ClassFile cf)
{
var magic = stream.ReadU4();
if (magic != ClassFile.Magic)
throw new Dot42Exception("Invalid magic");
cf.MinorVersion = stream.ReadU2();
cf.MajorVersion = stream.ReadU2();
var cpCount = stream.ReadU2();
var cp = new ConstantPool(cpCount, cf.Loader);
for (var i = 1; i < cpCount; i++)
{
var tag = (ConstantPoolTags) stream.ReadU1();
ConstantPoolEntry entry;
int tmp;
switch (tag)
{
case ConstantPoolTags.Class:
entry = new ConstantPoolClass(cp, stream.ReadU2());
break;
case ConstantPoolTags.Fieldref:
tmp = stream.ReadU2();
entry = new ConstantPoolFieldRef(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.Methodref:
tmp = stream.ReadU2();
entry = new ConstantPoolMethodRef(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.InterfaceMethodref:
tmp = stream.ReadU2();
entry = new ConstantPoolInterfaceMethodRef(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.String:
entry = new ConstantPoolString(cp, stream.ReadU2());
break;
case ConstantPoolTags.Integer:
entry = new ConstantPoolInteger(cp, stream.ReadS4());
break;
case ConstantPoolTags.Float:
entry = new ConstantPoolFloat(cp, stream.ReadF4());
break;
case ConstantPoolTags.Long:
entry = new ConstantPoolLong(cp, stream.ReadS8());
break;
case ConstantPoolTags.Double:
entry = new ConstantPoolDouble(cp, stream.ReadF8());
break;
case ConstantPoolTags.NameAndType:
tmp = stream.ReadU2();
entry = new ConstantPoolNameAndType(cp, tmp, stream.ReadU2());
break;
case ConstantPoolTags.Utf8:
tmp = stream.ReadU2();
entry = new ConstantPoolUtf8(cp, stream.ReadUTF8(tmp));
break;
default:
throw new Dot42Exception("Unknown constant pool tag: " + (int)tag);
}
cp[i] = entry;
if ((tag == ConstantPoolTags.Double) || (tag == ConstantPoolTags.Long))
i++;
}
cf.ClassAccessFlags = (ClassAccessFlags) stream.ReadU2();
var index = stream.ReadU2();
cf.ClassName = cp.GetEntry<ConstantPoolClass>(index).Name;
index = stream.ReadU2();
cf.SuperClass = (index == 0) ? null : new ObjectTypeReference(cp.GetEntry<ConstantPoolClass>(index).Name, null);
// Interfaces
var icount = stream.ReadU2();
var interfaces = new string[icount];
for (var i = 0; i < icount; i++)
{
index = stream.ReadU2();
interfaces[i] = cp.GetEntry<ConstantPoolClass>(index).Name;
}
cf.Interfaces = interfaces.Select(x => new ObjectTypeReference(x, null)).ToArray();
// Fields
var fcount = stream.ReadU2();
for (var i = 0; i < fcount; i++)
{
var accessFlags = (FieldAccessFlags) stream.ReadU2();
var nameIndex = stream.ReadU2();
var descriptorIndex = stream.ReadU2();
var name = cp.GetEntry<ConstantPoolUtf8>(nameIndex).Value;
var descriptor = cp.GetEntry<ConstantPoolUtf8>(descriptorIndex).Value;
var field = new FieldDefinition(cf, accessFlags, name, descriptor, null);
ReadAttributes(cp, field);
cf.Fields.Add(field);
}
// Methods
var mcount = stream.ReadU2();
for (var i = 0; i < mcount; i++)
{
var accessFlags = (MethodAccessFlags)stream.ReadU2();
var nameIndex = stream.ReadU2();
var descriptorIndex = stream.ReadU2();
var name = cp.GetEntry<ConstantPoolUtf8>(nameIndex).Value;
var descriptor = cp.GetEntry<ConstantPoolUtf8>(descriptorIndex).Value;
var method = new MethodDefinition(cf, accessFlags, name, descriptor, null);
ReadAttributes(cp, method);
cf.Methods.Add(method);
}
// Attributes
ReadAttributes(cp, cf);
}
/// <summary>
/// Read a Code attribute
/// </summary>
private CodeAttribute ReadCodeAttribute(MethodDefinition method, ConstantPool cp)
{
var maxStack = stream.ReadU2();
var maxLocals = stream.ReadU2();
var codeLength = (int)stream.ReadU4();
var code = new byte[codeLength];
stream.Read(code, 0, codeLength);
var result = new CodeAttribute(method, cp, maxStack, maxLocals, code);
var ecount = stream.ReadU2();
for (var i = 0; i < ecount; i++)
{
var startPC = stream.ReadU2();
var endPC = stream.ReadU2();
var handlerPC = stream.ReadU2();
var catchTypeIndex = stream.ReadU2();
var catchType = (catchTypeIndex != 0) ? cp.GetEntry<ConstantPoolClass>(catchTypeIndex).Type : null;
result.Add(new ExceptionHandler(result, startPC, endPC, handlerPC, catchType));
}
ReadAttributes(cp, result);
return result;
}
/// <summary>
/// Read a list of attributes
/// </summary>
private void ReadAttributes(ConstantPool cp, IModifiableAttributeProvider provider)
{
var count = stream.ReadU2();
for (var i = 0; i < count; i++)
{
var nameIndex = stream.ReadU2();
var name = cp.GetEntry<ConstantPoolUtf8>(nameIndex).Value;
var length = stream.ReadU4();
Attribute attr;
int tmp;
switch (name)
{
case CodeAttribute.AttributeName:
attr = ReadCodeAttribute((MethodDefinition)provider, cp);
break;
case ConstantValueAttribute.AttributeName:
tmp = stream.ReadU2();
attr = new ConstantValueAttribute(((IConstantPoolValue)cp[tmp]).Value);
break;
case ExceptionsAttribute.AttributeName:
attr = ReadExceptionsAttribute(cp);
break;
case InnerClassesAttribute.AttributeName:
attr = ReadInnerClassesAttribute(cp);
break;
case SyntheticAttribute.AttributeName:
attr = new SyntheticAttribute();
break;
case SourceFileAttribute.AttributeName:
tmp = stream.ReadU2();
attr = new SourceFileAttribute(cp.GetEntry<ConstantPoolUtf8>(tmp).Value);
break;
case LineNumberTableAttribute.AttributeName:
attr = ReadLineNumberTableAttribute();
break;
case LocalVariableTableAttribute.AttributeName:
attr = ReadLocalVariableTableAttribute(cp);
break;
case DeprecatedAttribute.AttributeName:
attr = new DeprecatedAttribute();
break;
case OverrideAttribute.AttributeName:
attr = new OverrideAttribute();
break;
case SignatureAttribute.AttributeName:
tmp = stream.ReadU2();
attr = new SignatureAttribute(cp.GetEntry<ConstantPoolUtf8>(tmp).Value);
break;
case RuntimeVisibleAnnotationsAttribute.AttributeName:
attr = new RuntimeVisibleAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case RuntimeInvisibleAnnotationsAttribute.AttributeName:
attr = new RuntimeInvisibleAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case RuntimeVisibleParameterAnnotationsAttribute.AttributeName:
attr = new RuntimeVisibleParameterAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case RuntimeInvisibleParameterAnnotationsAttribute.AttributeName:
attr = new RuntimeInvisibleParameterAnnotationsAttribute(ReadAnnotationsAttribute(cp));
break;
case AnnotationDefaultAttribute.AttributeName:
attr = new AnnotationDefaultAttribute(ReadElementValue(cp));
break;
default:
stream.Skip(length);
attr = new UnknownAttribute(name);
break;
}
provider.Add(attr);
}
provider.AttributesLoaded();
}
public override void ProcessFromConstantPool(ConstantPool constantPool)
{
Descriptor = constantPool.GetEntry <Utf8Entry>(descriptorIndex);
}
public override void ProcessFromConstantPool(ConstantPool constantPool)
{
Name = constantPool.GetEntry <Utf8Entry>(nameIndex);
}
/// <summary>
/// Parse the entire byte array into instructions.
/// </summary>
private List <Instruction> Parse()
{
var instructions = new List <Instruction>();
for (var offset = 0; offset < code.Length;)
{
var startOffset = offset;
var opcode = (Code)code[offset++];
object operand = null;
object operand2 = null;
switch (opcode)
{
case Code.AALOAD:
case Code.AASTORE:
case Code.ACONST_NULL:
case Code.ARETURN:
case Code.ARRAYLENGTH:
case Code.ATHROW:
case Code.BALOAD:
case Code.BASTORE:
case Code.CALOAD:
case Code.CASTORE:
case Code.D2F:
case Code.D2I:
case Code.D2L:
case Code.DADD:
case Code.DALOAD:
case Code.DASTORE:
case Code.DCMPG:
case Code.DCMPL:
case Code.DDIV:
case Code.DMUL:
case Code.DNEG:
case Code.DREM:
case Code.DRETURN:
case Code.DSUB:
case Code.DUP:
case Code.DUP_X1:
case Code.DUP_X2:
case Code.DUP2:
case Code.DUP2_X1:
case Code.DUP2_X2:
case Code.F2D:
case Code.F2I:
case Code.F2L:
case Code.FADD:
case Code.FALOAD:
case Code.FASTORE:
case Code.FCMPG:
case Code.FCMPL:
case Code.FDIV:
case Code.FMUL:
case Code.FNEG:
case Code.FREM:
case Code.FRETURN:
case Code.FSUB:
case Code.I2B:
case Code.I2C:
case Code.I2D:
case Code.I2F:
case Code.I2L:
case Code.I2S:
case Code.IADD:
case Code.IALOAD:
case Code.IAND:
case Code.IASTORE:
case Code.IDIV:
case Code.IMUL:
case Code.INEG:
case Code.IOR:
case Code.IREM:
case Code.IRETURN:
case Code.ISHL:
case Code.ISHR:
case Code.ISUB:
case Code.IUSHR:
case Code.IXOR:
case Code.L2D:
case Code.L2F:
case Code.L2I:
case Code.LADD:
case Code.LALOAD:
case Code.LAND:
case Code.LASTORE:
case Code.LCMP:
case Code.LDIV:
case Code.LMUL:
case Code.LNEG:
case Code.LOR:
case Code.LREM:
case Code.LRETURN:
case Code.LSHL:
case Code.LSHR:
case Code.LSUB:
case Code.LUSHR:
case Code.LXOR:
case Code.MONITORENTER:
case Code.MONITOREXIT:
case Code.NOP:
case Code.POP:
case Code.POP2:
case Code.RETURN:
case Code.SALOAD:
case Code.SASTORE:
case Code.SWAP:
// Single byte
break;
case Code.ALOAD:
case Code.ASTORE:
case Code.DLOAD:
case Code.DSTORE:
case Code.FLOAD:
case Code.FSTORE:
case Code.ILOAD:
case Code.ISTORE:
case Code.LLOAD:
case Code.LSTORE:
// Single U8 operand
operand = GetLocalVariable(startOffset, ReadU8(ref offset));
break;
case Code.ALOAD_0:
case Code.ALOAD_1:
case Code.ALOAD_2:
case Code.ALOAD_3:
operand = GetLocalVariable(startOffset, opcode - Code.ALOAD_0);
break;
case Code.ANEWARRAY:
case Code.CHECKCAST:
case Code.INSTANCEOF:
case Code.NEW:
// U16 class reference
operand = cp.GetEntry <ConstantPoolClass>(ReadU16(ref offset));
break;
case Code.ASTORE_0:
case Code.ASTORE_1:
case Code.ASTORE_2:
case Code.ASTORE_3:
operand = GetLocalVariable(startOffset, opcode - Code.ASTORE_0);
break;
case Code.BIPUSH:
operand = ReadS8(ref offset);
break;
case Code.DCONST_0:
operand = 0.0;
break;
case Code.DCONST_1:
operand = 1.0;
break;
case Code.DLOAD_0:
case Code.DLOAD_1:
case Code.DLOAD_2:
case Code.DLOAD_3:
operand = GetLocalVariable(startOffset, opcode - Code.DLOAD_0);
break;
case Code.DSTORE_0:
case Code.DSTORE_1:
case Code.DSTORE_2:
case Code.DSTORE_3:
operand = GetLocalVariable(startOffset, opcode - Code.DSTORE_0);
break;
case Code.FCONST_0:
operand = 0.0f;
break;
case Code.FCONST_1:
operand = 1.0f;
break;
case Code.FCONST_2:
operand = 2.0f;
break;
case Code.FLOAD_0:
case Code.FLOAD_1:
case Code.FLOAD_2:
case Code.FLOAD_3:
operand = GetLocalVariable(startOffset, opcode - Code.FLOAD_0);
break;
case Code.FSTORE_0:
case Code.FSTORE_1:
case Code.FSTORE_2:
case Code.FSTORE_3:
operand = GetLocalVariable(startOffset, opcode - Code.FSTORE_0);
break;
case Code.GETFIELD:
case Code.GETSTATIC:
case Code.PUTFIELD:
case Code.PUTSTATIC:
// U16 field reference
operand = cp.GetEntry <ConstantPoolFieldRef>(ReadU16(ref offset));
break;
case Code.GOTO:
case Code.IF_ACMPEQ:
case Code.IF_ACMPNE:
case Code.IF_ICMPEQ:
case Code.IF_ICMPNE:
case Code.IF_ICMPLT:
case Code.IF_ICMPGE:
case Code.IF_ICMPGT:
case Code.IF_ICMPLE:
case Code.IFEQ:
case Code.IFNE:
case Code.IFLT:
case Code.IFGE:
case Code.IFGT:
case Code.IFLE:
case Code.IFNONNULL:
case Code.IFNULL:
case Code.JSR:
operand = new BranchOffset(ReadS16(ref offset));
break;
case Code.GOTO_W:
case Code.JSR_W:
operand = new BranchOffset(ReadS32(ref offset));
break;
case Code.ICONST_M1:
case Code.ICONST_0:
case Code.ICONST_1:
case Code.ICONST_2:
case Code.ICONST_3:
case Code.ICONST_4:
case Code.ICONST_5:
operand = (int)(opcode - Code.ICONST_0);
break;
case Code.IINC:
operand = GetLocalVariable(startOffset, ReadU8(ref offset));
operand2 = ReadS8(ref offset);
break;
case Code.ILOAD_0:
case Code.ILOAD_1:
case Code.ILOAD_2:
case Code.ILOAD_3:
operand = GetLocalVariable(startOffset, opcode - Code.ILOAD_0);
break;
case Code.INVOKEINTERFACE:
// U16 method/imethod reference
operand = cp[ReadU16(ref offset)];
operand2 = ReadU8(ref offset);
offset++; // '0'
break;
case Code.INVOKESPECIAL:
case Code.INVOKESTATIC:
case Code.INVOKEVIRTUAL:
// U16 method/imethod reference
operand = cp[ReadU16(ref offset)];
break;
case Code.ISTORE_0:
case Code.ISTORE_1:
case Code.ISTORE_2:
case Code.ISTORE_3:
operand = GetLocalVariable(startOffset, opcode - Code.ISTORE_0);
break;
case Code.LCONST_0:
operand = 0L;
break;
case Code.LCONST_1:
operand = 1L;
break;
case Code.LDC:
operand = cp[ReadU8(ref offset)];
break;
case Code.LDC_W:
case Code.LDC2_W:
operand = cp[ReadU16(ref offset)];
break;
case Code.LLOAD_0:
case Code.LLOAD_1:
case Code.LLOAD_2:
case Code.LLOAD_3:
operand = GetLocalVariable(startOffset, opcode - Code.LLOAD_0);
break;
case Code.LOOKUPSWITCH:
operand = ReadLookupSwitch(ref offset);
break;
case Code.LSTORE_0:
case Code.LSTORE_1:
case Code.LSTORE_2:
case Code.LSTORE_3:
operand = GetLocalVariable(startOffset, opcode - Code.LSTORE_0);
break;
case Code.MULTIANEWARRAY:
operand = cp.GetEntry <ConstantPoolClass>(ReadU16(ref offset));
operand2 = ReadU8(ref offset);
break;
case Code.NEWARRAY:
operand = ReadU8(ref offset);
break;
case Code.RET:
operand = GetLocalVariable(startOffset, ReadU8(ref offset));
break;
case Code.SIPUSH:
operand = ReadS16(ref offset);
break;
case Code.TABLESWITCH:
operand = ReadTableSwitch(ref offset);
break;
case Code.WIDE:
opcode = (Code)code[offset++];
operand = GetLocalVariable(startOffset, ReadU16(ref offset));
if (opcode == Code.IINC)
{
operand2 = ReadS16(ref offset);
}
break;
}
instructions.Add(new Instruction(startOffset, opcode, operand, operand2));
}
return(instructions);
}
public override void ProcessFromConstantPool(ConstantPool constantPool)
{
Class = constantPool.GetEntry <ClassEntry>(classIndex);
NameAndType = constantPool.GetEntry <NameAndTypeEntry>(nameAndTypeIndex);
}
