public Op Read()
{
var b = Inner.ReadByte();
if(b == -1)
return null;
var opcode = (OpcodeType)b;
if(Op.IsPushCode(opcode))
{
Op op = new Op();
op.Code = opcode;
op.PushData = op.ReadData(Inner);
return op;
}
return new Op()
{
Code = opcode
};
}
public static Op GetPushOp(byte[] data)
{
Op op = new Op();
op.PushData = data;
if(data.Length == 0)
op.Code = OpcodeType.OP_0;
else if(data.Length == 1 && (byte)1 <= data[0] && data[0] <= (byte)16)
op.Code = (OpcodeType)(data[0] + (byte)OpcodeType.OP_1 - 1);
else if(data.Length == 1 && (byte)0x81 == data[0])
op.Code = OpcodeType.OP_1NEGATE;
else if(0x01 <= data.Length && data.Length <= 0x4b)
op.Code = (OpcodeType)(byte)data.Length;
else if(data.Length <= 0xFF)
op.Code = OpcodeType.OP_PUSHDATA1;
else if(data.Length <= 0xFFFF)
op.Code = OpcodeType.OP_PUSHDATA2;
else
throw new NotSupportedException("Data length should not be bigger than 0xFFFFFFFF");
return op;
}
internal int FindAndDelete(Op op)
{
return op == null ? 0 : FindAndDelete(o => o.Code == op.Code && o.PushData.SequenceEqual(op.PushData));
}