protected override IHandleObject CreateValueFromKey(NativeFormatObjectKey key)
{
Handle handle = key.Handle;
NativeFormatType container = key.Container;
object item;
switch (handle.HandleType)
{
case HandleType.TypeDefinition:
item = new NativeFormatType(_metadataUnit, handle.ToTypeDefinitionHandle(_metadataReader));
break;
case HandleType.Method:
item = new NativeFormatMethod(container, handle.ToMethodHandle(_metadataReader));
break;
case HandleType.Field:
item = new NativeFormatField(container, handle.ToFieldHandle(_metadataReader));
break;
case HandleType.TypeReference:
item = _metadataUnit.ResolveTypeReference(handle.ToTypeReferenceHandle(_metadataReader));
break;
case HandleType.MemberReference:
item = _metadataUnit.ResolveMemberReference(handle.ToMemberReferenceHandle(_metadataReader));
break;
case HandleType.QualifiedMethod:
item = _metadataUnit.ResolveQualifiedMethod(handle.ToQualifiedMethodHandle(_metadataReader));
break;
case HandleType.QualifiedField:
item = _metadataUnit.ResolveQualifiedField(handle.ToQualifiedFieldHandle(_metadataReader));
break;
case HandleType.ScopeReference:
item = _metadataUnit.ResolveAssemblyReference(handle.ToScopeReferenceHandle(_metadataReader));
break;
case HandleType.ScopeDefinition:
{
ScopeDefinition scope = handle.ToScopeDefinitionHandle(_metadataReader).GetScopeDefinition(_metadataReader);
item = _metadataUnit.GetModuleFromAssemblyName(scope.Name.GetConstantStringValue(_metadataReader).Value);
}
break;
case HandleType.TypeSpecification:
case HandleType.TypeInstantiationSignature:
case HandleType.SZArraySignature:
case HandleType.ArraySignature:
case HandleType.PointerSignature:
case HandleType.ByReferenceSignature:
case HandleType.TypeVariableSignature:
case HandleType.MethodTypeVariableSignature:
{
NativeFormatSignatureParser parser = new NativeFormatSignatureParser(_metadataUnit, handle, _metadataReader);
item = parser.ParseTypeSignature();
}
break;
case HandleType.MethodInstantiation:
item = _metadataUnit.ResolveMethodInstantiation(handle.ToMethodInstantiationHandle(_metadataReader));
break;
// TODO: Resolve other tokens
default:
throw new BadImageFormatException("Unknown metadata token type: " + handle.HandleType);
}
switch (handle.HandleType)
{
case HandleType.TypeDefinition:
case HandleType.Field:
case HandleType.Method:
// type/method/field definitions directly correspond to their target item.
return((IHandleObject)item);
default:
// Everything else is some form of reference which cannot be self-describing
return(new NativeFormatObjectLookupWrapper(handle, item, container));
}
}
