private static AttributeCode ReadAttributeCode(BytecodeReader reader, ConstantPool cp)
{
ushort attributeNameIndex = reader.ReadUShort();
uint attributesLength = reader.ReadUInt();
ushort maxStack = reader.ReadUShort();
ushort maxLocals = reader.ReadUShort();
uint codeLength = reader.ReadUInt();
// typecasting could be bad
byte[] bytecode = reader.ReadArray((int)codeLength);
ushort exceptionTableLength = reader.ReadUShort();
byte[] exceptionTable = reader.ReadArray(exceptionTableLength * 8);
ushort attributesCount = reader.ReadUShort();
Attributes attributes = ReadAttributes(reader, attributesCount, cp);
return(new AttributeCode(attributeNameIndex, attributesLength, maxStack, maxLocals,
codeLength, bytecode, exceptionTableLength, exceptionTable, attributesCount, attributes));
}
private static AttributeConstantValue ReadAttributeConstantValue(BytecodeReader reader)
{
ushort attributeNameIndex = reader.ReadUShort();
uint attributeLength = reader.ReadUInt();
return(new AttributeConstantValue(attributeNameIndex, attributeLength));
}
private static AttributeBootstrapMethods ReadAttributeBootstrapMethods(BytecodeReader reader)
{
ushort attributeNameIndex = reader.ReadUShort();
uint attributeLength = reader.ReadUInt();
return(new AttributeBootstrapMethods(attributeNameIndex, attributeLength));
}
private static AttributeStackMapTable ReadAttributeStackMapTable(BytecodeReader reader)
{
ushort attributeNameIndex = reader.ReadUShort();
uint attributeLength = reader.ReadUInt();
ushort numberOfEntries = reader.ReadUShort();
return(new AttributeStackMapTable(attributeNameIndex, attributeLength, numberOfEntries));
}
private static AttributeSourceFile ReadAttributeSourceFile(BytecodeReader reader)
{
ushort attributeNameIndex = reader.ReadUShort();
uint attributeLength = reader.ReadUInt();
ushort sourceFileIndex = reader.ReadUShort();
return(new AttributeSourceFile(attributeNameIndex, attributeLength, sourceFileIndex));
}
public static JavaClass ReadJavaClass(byte[] bytecode)
{
BytecodeReader reader = new BytecodeReader(bytecode);
// ca fe ba be
uint magic = reader.ReadUInt();
// Версии
ushort minorVersion = reader.ReadUShort();
ushort majorVersion = reader.ReadUShort();
ushort constantPoolCount = reader.ReadUShort();
ConstantPool constantPool = ReadConstantPool(reader, constantPoolCount);
ushort accessFlags = reader.ReadUShort();
// Индекс констанnы class текущего класса в пуле констант
ushort thisClass = reader.ReadUShort();
ushort superClass = reader.ReadUShort();
ushort interfacesCount = reader.ReadUShort();
Interfaces interfaces = ReadInterfaces(reader, interfacesCount, constantPool);
ushort fieldsCount = reader.ReadUShort();
List <Field> fields = new List <Field>();
for (int i = 0; i < fieldsCount; i++)
{
fields.Add(ReadField(reader, fieldsCount, constantPool));
}
ushort methodsCount = reader.ReadUShort();
List <Method> methods = new List <Method>();
for (short i = 0; i < methodsCount; i++)
{
methods.Add(ReadMethod(reader, methodsCount, constantPool));
}
ushort attributesCount = reader.ReadUShort();
Attributes attributes = ReadAttributes(reader, attributesCount, constantPool);
return(new JavaClass(magic, minorVersion, majorVersion, constantPoolCount, constantPool, accessFlags,
thisClass, superClass, interfacesCount, interfaces, fieldsCount, fields, methodsCount,
methods, attributesCount, attributes));
}
private static AttributeLineNumberTable ReadAttributeLineNumberTable(BytecodeReader reader)
{
ushort attributeNameIndex = reader.ReadUShort();
uint attributeLength = reader.ReadUInt();
ushort lineNumberTableLength = reader.ReadUShort();
List <byte[]> startPC = new List <byte[]>();
List <byte[]> lineNumber = new List <byte[]>();
for (int i = 0; i < lineNumberTableLength; i++)
{
startPC.Add(reader.ReadArray(2));
lineNumber.Add(reader.ReadArray(2));
}
return(new AttributeLineNumberTable(attributeNameIndex, attributeLength,
lineNumberTableLength, startPC, lineNumber));
}