internal static RuntimeTypeInfo TryResolve(this QTypeDefRefOrSpec typeDefOrRefOrSpec, TypeContext typeContext, ref Exception exception)
{
if (typeDefOrRefOrSpec.IsNativeFormatMetadataBased)
{
return(global::Internal.Metadata.NativeFormat.Handle.FromIntToken(typeDefOrRefOrSpec.Handle).TryResolve((global::Internal.Metadata.NativeFormat.MetadataReader)typeDefOrRefOrSpec.Reader, typeContext, ref exception));
}
throw new BadImageFormatException(); // Expected TypeRef, Def or Spec with MetadataReader
}
//
// Main routine to resolve a typeDef/Ref/Spec.
//
internal static RuntimeTypeInfo Resolve(this QTypeDefRefOrSpec typeDefOrRefOrSpec, TypeContext typeContext)
{
Exception exception = null;
RuntimeTypeInfo runtimeType = typeDefOrRefOrSpec.TryResolve(typeContext, ref exception);
if (runtimeType == null)
{
throw exception;
}
return(runtimeType);
}
internal static RuntimeTypeInfo TryResolve(this QTypeDefRefOrSpec typeDefOrRefOrSpec, TypeContext typeContext, ref Exception?exception)
{
if (typeDefOrRefOrSpec.IsNativeFormatMetadataBased)
{
return(global::Internal.Metadata.NativeFormat.Handle.FromIntToken(typeDefOrRefOrSpec.Handle).TryResolve((global::Internal.Metadata.NativeFormat.MetadataReader)typeDefOrRefOrSpec.Reader, typeContext, ref exception));
}
#if ECMA_METADATA_SUPPORT
if (typeDefOrRefOrSpec.Reader is global::System.Reflection.Metadata.MetadataReader ecmaReader)
{
return(global::System.Reflection.Metadata.Ecma335.MetadataTokens.Handle(typeDefOrRefOrSpec.Handle).TryResolve(ecmaReader, typeContext, ref exception));
}
#endif
throw new BadImageFormatException(); // Expected TypeRef, Def or Spec with MetadataReader
}
//
// This is a port of the desktop CLR's RuntimeType.FormatTypeName() routine. This routine is used by various Reflection ToString() methods
// to display the name of a type. Do not use for any other purpose as it inherits some pretty quirky desktop behavior.
//
// The Project N version takes a raw metadata handle rather than a completed type so that it remains robust in the face of missing metadata.
//
public static String FormatTypeName(this QTypeDefRefOrSpec qualifiedTypeHandle, TypeContext typeContext)
{
try
{
// Though we wrap this in a try-catch as a failsafe, this code must still strive to avoid triggering MissingMetadata exceptions
// (non-error exceptions are very annoying when debugging.)
Exception exception = null;
RuntimeTypeInfo runtimeType = qualifiedTypeHandle.TryResolve(typeContext, ref exception);
if (runtimeType == null)
{
return(Type.DefaultTypeNameWhenMissingMetadata);
}
// Because this runtimeType came from a successful TryResolve() call, it is safe to querying the TypeInfo's of the type and its component parts.
// If we're wrong, we do have the safety net of a try-catch.
return(runtimeType.FormatTypeName());
}
catch (Exception)
{
return(Type.DefaultTypeNameWhenMissingMetadata);
}
}
