public ISymbolReader GetSymbolReader(ModuleDefinition module, Stream symbolStream)
{
if (module.Image.HasDebugTables())
{
return(null);
}
if (module.HasDebugHeader)
{
var header = module.GetDebugHeader();
var entry = header.GetEmbeddedPortablePdbEntry();
if (entry != null)
{
return(new EmbeddedPortablePdbReaderProvider().GetSymbolReader(module, ""));
}
}
Mixin.CheckStream(symbolStream);
Mixin.CheckReadSeek(symbolStream);
var position = symbolStream.Position;
const int portablePdbHeader = 0x424a5342;
var reader = new BinaryStreamReader(symbolStream);
var intHeader = reader.ReadInt32();
symbolStream.Position = position;
if (intHeader == portablePdbHeader)
{
return(new PortablePdbReaderProvider().GetSymbolReader(module, symbolStream));
}
const string nativePdbHeader = "Microsoft C/C++ MSF 7.00";
var bytesHeader = reader.ReadBytes(nativePdbHeader.Length);
symbolStream.Position = position;
var isNativePdb = true;
for (var i = 0; i < bytesHeader.Length; i++)
{
if (bytesHeader [i] != (byte)nativePdbHeader [i])
{
isNativePdb = false;
break;
}
}
if (isNativePdb)
{
try {
return(SymbolProvider.GetReaderProvider(SymbolKind.NativePdb).GetSymbolReader(module, symbolStream));
} catch (Exception) {
// We might not include support for native pdbs.
}
}
const long mdbHeader = 0x45e82623fd7fa614;
var longHeader = reader.ReadInt64();
symbolStream.Position = position;
if (longHeader == mdbHeader)
{
try {
return(SymbolProvider.GetReaderProvider(SymbolKind.Mdb).GetSymbolReader(module, symbolStream));
} catch (Exception) {
// We might not include support for mdbs.
}
}
if (throw_if_no_symbol)
{
throw new SymbolsNotFoundException(string.Format("No symbols found in stream"));
}
return(null);
}