public void Read(RecursionCounter counter, ref DataReader reader, uint scopeEnd)
{
if (!counter.Increment())
{
throw new PdbException("Scopes too deep");
}
while (reader.Position < scopeEnd)
{
var size = reader.ReadUInt16();
var begin = reader.Position;
var end = begin + size;
var type = (SymbolType)reader.ReadUInt16();
DbiScope child = null;
uint? childEnd = null;
string name;
switch (type)
{
case SymbolType.S_BLOCK32: {
reader.Position += 4;
childEnd = reader.ReadUInt32();
var len = reader.ReadUInt32();
var addr = PdbAddress.ReadAddress(ref reader);
name = PdbReader.ReadCString(ref reader);
child = new DbiScope(method, this, name, addr.Offset, len);
break;
}
case SymbolType.S_UNAMESPACE:
namespacesList.Add(new DbiNamespace(PdbReader.ReadCString(ref reader)));
break;
case SymbolType.S_MANSLOT: {
var variable = new DbiVariable();
if (variable.Read(ref reader))
{
localsList.Add(variable);
}
break;
}
case SymbolType.S_OEM:
if ((ulong)reader.Position + 20 > end)
{
break;
}
if (!ReadAndCompareBytes(ref reader, end, dotNetOemGuid))
{
Debug.Fail("Unknown OEM record GUID, not .NET GUID");
break;
}
reader.Position += 4; // typeIndex or 0
name = ReadUnicodeString(ref reader, end);
Debug.Assert(name != null);
if (name == null)
{
break;
}
var data = reader.ReadBytes((int)(end - reader.Position));
if (oemInfos == null)
{
oemInfos = new List <OemInfo>(1);
}
oemInfos.Add(new OemInfo(name, data));
break;
case SymbolType.S_MANCONSTANT:
uint signatureToken = reader.ReadUInt32();
object value;
if (!NumericReader.TryReadNumeric(ref reader, end, out value))
{
break;
}
name = PdbReader.ReadCString(ref reader);
if (constants == null)
{
constants = new List <ConstantInfo>();
}
constants.Add(new ConstantInfo(name, signatureToken, value));
break;
case SymbolType.S_END:
break;
default:
break;
}
reader.Position = end;
if (child != null)
{
child.Read(counter, ref reader, childEnd.Value);
childrenList.Add(child);
child = null;
}
}
counter.Decrement();
if (reader.Position != scopeEnd)
{
Debugger.Break();
}
}