public DBIReader(Context ctx, Stream stream) : base(stream)
{
this.ctx = ctx;
hdr = ReadStruct <DBIHeader>();
if (hdr.Signature != unchecked ((uint)-1) || !Enum.IsDefined(typeof(DBIVersion), (uint)hdr.Version))
{
throw new InvalidDataException();
}
uint nStreams = ctx.StreamTableReader.NumStreams;
if (
hdr.GsSymbolsStreamNumber >= nStreams ||
hdr.PsSymbolsStreamNumber >= nStreams ||
hdr.SymbolRecordsStreamNumber >= nStreams
)
{
throw new InvalidDataException();
}
lazyModuleContainers = new Lazy <IEnumerable <IModuleContainer> >(ReadModules);
}
/**
* Layout of the DBI stream
* -> Header
* -> ModuleList
* -> SectionContributions
* -> SectionMap
* -> FileInfo
* -> TypeServerMap
* -> EcSubstream
* -> DebugHeader
**/
public DBIReader(IServiceContainer ctx, byte[] data) : base(data)
{
this.ctx = ctx;
if (Length == 0)
{
return;
}
if (Length < Marshal.SizeOf <DBIHeader>())
{
throw new InvalidDataException();
}
Header = Read <DBIHeader>();
if (Header.Signature != unchecked ((uint)-1) || !Enum.IsDefined(typeof(DBIVersion), (uint)Header.Version))
{
throw new InvalidDataException();
}
this.StreamTable = ctx.GetService <StreamTableReader>();
uint nStreams = StreamTable.NumStreams;
if (
Header.GsSymbolsStreamNumber >= nStreams ||
Header.PsSymbolsStreamNumber >= nStreams ||
Header.SymbolRecordsStreamNumber >= nStreams
)
{
throw new InvalidDataException();
}
lazyModuleContainers = LazyFactory.CreateLazy(ReadModules);
Position += Header.ModuleListSize;
if (Header.SectionContributionSize > 0)
{
SectionContribs = new SectionContribsReader(Header.SectionContributionSize, this);
}
Position += Header.SectionContributionSize;
Position += Header.SectionMapSize;
Position += Header.FileInfoSize;
if (Header.TypeServerMapSize > 0)
{
TypeServerMap = new TypeServerMapReader(this);
}
Position += Header.TypeServerMapSize;
if (Header.EcSubstreamSize > 0)
{
EC = new ECReader(this);
}
Position += Header.EcSubstreamSize;
if (Header.DebugHeaderSize > 0)
{
DebugInfo = new DebugReader(ctx, this);
}
}