public DatSymbolReference()
{
Object = UndeclaredSymbol;
Attribute = null;
Index = -1;
}
/// <summary>
/// Loads DatSymbol from binary DAT formatted stream
/// </summary>
public static DatSymbol Load(DatBinaryReader reader)
{
var symbol = new DatSymbol();
// Read Name
var hasName = Convert.ToBoolean(reader.ReadUInt32());
if (hasName)
{
symbol.Name = reader.ReadString();
}
// Read ReturnType / ClassSize / ClassVarOffset / ArrayLength / Type / Flags
var valueField = reader.ReadInt32();
var bitField = reader.ReadUInt32();
symbol.ArrayLength = bitField & 0xFFF;
symbol.Type = (DatSymbolType)((bitField & 0xF000) >> 12);
symbol.Flags = (DatSymbolFlag)((bitField & 0x3F0000) >> 16);
if (symbol.Type == DatSymbolType.Func && symbol.Flags.HasFlag(DatSymbolFlag.Return))
{
symbol.ReturnType = (DatSymbolType)valueField;
}
if (symbol.Type == DatSymbolType.Class)
{
symbol.ClassSize = valueField;
}
if (symbol.Flags.HasFlag(DatSymbolFlag.Classvar))
{
symbol.ClassVarOffset = valueField;
}
symbol.Location = new DatSymbolLocation
{
FileNumber = reader.ReadInt32(),
Line = reader.ReadInt32(),
LinesCount = reader.ReadInt32(),
Position = reader.ReadInt32(),
PositionsCount = reader.ReadInt32(),
};
switch (symbol.Type)
{
case DatSymbolType.Class:
symbol.ClassOffset = reader.ReadInt32();
break;
case DatSymbolType.Func:
case DatSymbolType.Instance:
case DatSymbolType.Prototype:
symbol.FirstTokenAddress = reader.ReadInt32();
break;
default:
symbol.Content = GetContentIfExists(reader, symbol);
break;
}
symbol.ParentIndex = reader.ReadInt32();
return(symbol);
}