public void Read(RecursionCounter counter, IImageStream stream, uint scopeEnd)
{
if (!counter.Increment())
{
throw new PdbException("Scopes too deep");
}
while (stream.Position < scopeEnd)
{
var size = stream.ReadUInt16();
var begin = stream.Position;
var end = begin + size;
var type = (SymbolType)stream.ReadUInt16();
DbiScope child = null;
uint? childEnd = null;
switch (type)
{
case SymbolType.S_BLOCK32:
{
stream.Position += 4;
childEnd = stream.ReadUInt32();
var len = stream.ReadUInt32();
var addr = PdbAddress.ReadAddress(stream);
var name = PdbReader.ReadCString(stream);
child = new DbiScope(name, addr.Offset, len);
break;
}
case SymbolType.S_UNAMESPACE:
Namespaces.Add(new DbiNamespace(PdbReader.ReadCString(stream)));
break;
case SymbolType.S_MANSLOT:
{
var variable = new DbiVariable();
variable.Read(stream);
Variables.Add(variable);
break;
}
}
stream.Position = end;
if (child != null)
{
child.Read(counter, stream, childEnd.Value);
Children.Add(child);
child = null;
}
}
counter.Decrement();
if (stream.Position != scopeEnd)
{
Debugger.Break();
}
}
private void FixOffsets(RecursionCounter counter, DbiScope scope)
{
if (!counter.Increment())
{
return;
}
scope.BeginOffset -= Address.Offset;
scope.EndOffset -= Address.Offset;
foreach (var child in scope.Children)
{
FixOffsets(counter, child);
}
counter.Decrement();
}
public void Read(IImageStream stream, long recEnd)
{
stream.Position += 4;
var end = stream.ReadUInt32();
stream.Position += 4;
var len = stream.ReadUInt32();
stream.Position += 8;
Token = stream.ReadUInt32();
Address = PdbAddress.ReadAddress(stream);
stream.Position += 1 + 2;
Name = PdbReader.ReadCString(stream);
stream.Position = recEnd;
Root = new DbiScope("", Address.Offset, len);
Root.Read(new RecursionCounter(), stream, end);
FixOffsets(new RecursionCounter(), Root);
}