// internal for testing
internal static void ReadStandalonePortablePdbStream(MemoryBlock block, out DebugMetadataHeader debugMetadataHeader, out int[] externalTableRowCounts)
{
var reader = new BlobReader(block);
const int PdbIdSize = 20;
byte[] pdbId = reader.ReadBytes(PdbIdSize);
// ECMA-335 15.4.1.2:
// The entry point to an application shall be static.
// This entry point method can be a global method or it can appear inside a type.
// The entry point method shall either accept no arguments or a vector of strings.
// The return type of the entry point method shall be void, int32, or unsigned int32.
// The entry point method cannot be defined in a generic class.
uint entryPointToken = reader.ReadUInt32();
int entryPointRowId = (int)(entryPointToken & TokenTypeIds.RIDMask);
if (entryPointToken != 0 && ((entryPointToken & TokenTypeIds.TypeMask) != TokenTypeIds.MethodDef || entryPointRowId == 0))
{
throw new BadImageFormatException("InvalidEntryPointToken");
}
ulong externalTableMask = reader.ReadUInt64();
// EnC & Ptr tables can't be referenced from standalone PDB metadata:
const ulong validTables = (ulong)TableMask.ValidPortablePdbExternalTables;
if ((externalTableMask & ~validTables) != 0)
{
throw new BadImageFormatException("UnknownTables");
}
externalTableRowCounts = ReadMetadataTableRowCounts(ref reader, externalTableMask);
debugMetadataHeader = new DebugMetadataHeader(
new ImmutableArray <byte>(pdbId),
MethodDefinitionHandle.FromRowId(entryPointRowId));
}
/// <summary>
/// Returns a handle to <see cref="MethodDefinition"/> corresponding to this handle.
/// </summary>
/// <remarks>
/// The resulting handle is only valid within the context of a <see cref="MetadataReader"/> open on the type system metadata blob,
/// which in case of standalone PDB file is a different reader than the one containing this method debug information.
/// </remarks>
public MethodDefinitionHandle ToDefinitionHandle()
{
return(MethodDefinitionHandle.FromRowId(_rowId));
}