internal static void Decode(ref DecodeWellKnownAttributeArguments <TAttributeSyntax, TAttributeData, TAttributeLocation> arguments, AttributeTargets target, CommonMessageProvider messageProvider)
{
Debug.Assert((object)arguments.AttributeSyntaxOpt != null);
UnmanagedType unmanagedType = DecodeMarshalAsType(arguments.Attribute);
switch (unmanagedType)
{
case Cci.Constants.UnmanagedType_CustomMarshaler:
DecodeMarshalAsCustom(ref arguments, messageProvider);
break;
case UnmanagedType.Interface:
case Cci.Constants.UnmanagedType_IDispatch:
case UnmanagedType.IUnknown:
DecodeMarshalAsComInterface(ref arguments, unmanagedType, messageProvider);
break;
case UnmanagedType.LPArray:
DecodeMarshalAsArray(ref arguments, messageProvider, isFixed: false);
break;
case UnmanagedType.ByValArray:
if (target != AttributeTargets.Field)
{
messageProvider.ReportMarshalUnmanagedTypeOnlyValidForFields(arguments.Diagnostics, arguments.AttributeSyntaxOpt, 0, "ByValArray", arguments.Attribute);
}
else
{
DecodeMarshalAsArray(ref arguments, messageProvider, isFixed: true);
}
break;
case Cci.Constants.UnmanagedType_SafeArray:
DecodeMarshalAsSafeArray(ref arguments, messageProvider);
break;
case UnmanagedType.ByValTStr:
if (target != AttributeTargets.Field)
{
messageProvider.ReportMarshalUnmanagedTypeOnlyValidForFields(arguments.Diagnostics, arguments.AttributeSyntaxOpt, 0, "ByValTStr", arguments.Attribute);
}
else
{
DecodeMarshalAsFixedString(ref arguments, messageProvider);
}
break;
case Cci.Constants.UnmanagedType_VBByRefStr:
if (target == AttributeTargets.Field)
{
messageProvider.ReportMarshalUnmanagedTypeNotValidForFields(arguments.Diagnostics, arguments.AttributeSyntaxOpt, 0, "VBByRefStr", arguments.Attribute);
}
else
{
// named parameters ignored with no error
arguments.GetOrCreateData <TWellKnownAttributeData>().GetOrCreateData().SetMarshalAsSimpleType(unmanagedType);
}
break;
default:
if ((int)unmanagedType < 0 || (int)unmanagedType > MarshalPseudoCustomAttributeData.MaxMarshalInteger)
{
// Dev10 reports CS0647: "Error emitting attribute ..."
messageProvider.ReportInvalidAttributeArgument(arguments.Diagnostics, arguments.AttributeSyntaxOpt, 0, arguments.Attribute);
}
else
{
// named parameters ignored with no error
arguments.GetOrCreateData <TWellKnownAttributeData>().GetOrCreateData().SetMarshalAsSimpleType(unmanagedType);
}
break;
}
}
