public static string ReadExpr(BinaryReader buf, long lastPosition = -1)
{
var _position = "";
if (lastPosition > 0)
{
_position = string.Format(" at {0:x8}", lastPosition);
}
int arg0 = buf.ReadByte() & 0xFF;
if (arg0 == 0xC0)
{
int mode = arg0;
int val = buf.ReadByte() & 0xFF;
return(string.Format("VAR_{0:x2}_{1}", mode, val));
}
else if (arg0 >= 0xC1 && arg0 <= 0xCF)
{
int mode = arg0;
int a = buf.ReadInt16() & 0xFFFF;
int b = buf.ReadInt16() & 0xFFFF;
return(string.Format("VAR_{0:x2}_{1}_{2}", mode, a, b));
}
else if (arg0 >= 0xA0 && arg0 <= 0xAF)
{
int m = arg0;
int a = buf.ReadByte() & 0xFF;
int b = buf.ReadByte() & 0xFF;
int nil = buf.ReadByte();
if (nil != 0)
{
Log.Write(" [Unknown] I thought exprs ended with 0x00, but got: " + nil + _position);
}
if (b == 0 && nil == 0)
{
return((256 * (m - 0xA0) + a).ToString());
}
else if (m == 0xA4)
{
return(KIDUtil.GetVarname(string.Format("{0:x2}", a)));
}
return(string.Format("CONST_{0:x2}_{1:x2}_{2:x2}", m, a, b));
}
else if (arg0 >= 0xB0 && arg0 <= 0xBF)
{
int m = arg0;
int a = buf.ReadByte() & 0xFF;
int b = buf.ReadByte() & 0xFF;
int nil = buf.ReadByte();
if (nil != 0)
{
Log.Write(" [Unknown] I thought negative exprs ended with 0x00, but got: " + nil + _position);
}
if (b == 0 && nil == 0)
{
return((256 * (m - 0xBF) + (a - 0x100)).ToString());
}
else if (m == 0xB4)
{
return(KIDUtil.GetVarname(string.Format("{0:x2}", a)));
}
return(string.Format("CONST_{0:x2}_{1:x2}_{2:x2}", m, a, b));
}
else if (arg0 >= 0x80 && arg0 <= 0x8F)
{
int a = arg0 - 0x80; //Constant
int b = buf.ReadByte() & 0xFF;
if (b != 0)
{
Log.Write(string.Format(
" [Unknown] I don't really know what to do with 2-byte constants: {0:x2} {1:x2}{2}",
arg0, b, _position));
}
int nil = buf.ReadByte();
if (nil != 0)
{
Log.Write(" [Unknown] I thought exprs ended with 0x00, but got: " + nil + _position);
}
return("" + a);
}
else if (arg0 == 0x28)
{
int arg1 = buf.ReadByte() & 0xFF;
if (arg1 != 0x0a)
{
Log.Write(" [Unknown] I thought 0x28 is always followed by 0x0a, but got: " + arg1 + _position);
}
return(ReadExpr(buf));
}
else if (arg0 == 0xe0)
{
int rColor = buf.ReadByte() & 0xFF;
int gColor = buf.ReadByte() & 0xFF;
int bColor = buf.ReadByte() & 0xFF;
int null1 = buf.ReadByte();
int null2 = buf.ReadByte();
int null3 = buf.ReadByte();
if (null1 != 0 || null2 != 0 || null3 != 0)
{
Log.Write(" [Unknown] I thought 0xe0 color code is always ended by three 0x00, at " + _position);
}
return(string.Format($"rgb({rColor},{gColor},{bColor})"));
}
else
{
if (!WorkAround.CanSuppressVaropError(arg0))
{
Log.Write(" [Unknown] What kind of expr is this? " + arg0 + _position);
}
return("" + arg0);
}
}
private string ReadCString()
{
return(KIDUtil.ReadCString(input));
}