public static CustomAttributeValueProjection RemoveProjection(CustomAttribute attribute)
{
if (attribute.projection == null)
{
return(null);
}
CustomAttributeValueProjection projection = attribute.projection;
attribute.projection = null;
attribute.ConstructorArguments[0] = new CustomAttributeArgument(attribute.ConstructorArguments[0].Type, projection.Targets);
attribute.Properties.Clear();
return(projection);
}
public static void ApplyProjection(CustomAttribute attribute, CustomAttributeValueProjection projection)
{
if (projection == null)
{
return;
}
bool version_or_deprecated;
bool multiple;
switch (projection.Treatment)
{
case CustomAttributeValueTreatment.AllowSingle:
version_or_deprecated = false;
multiple = false;
break;
case CustomAttributeValueTreatment.AllowMultiple:
version_or_deprecated = false;
multiple = true;
break;
case CustomAttributeValueTreatment.VersionAttribute:
case CustomAttributeValueTreatment.DeprecatedAttribute:
version_or_deprecated = true;
multiple = true;
break;
default:
throw new ArgumentException();
}
AttributeTargets attribute_targets = (AttributeTargets)attribute.ConstructorArguments[0].Value;
if (version_or_deprecated)
{
attribute_targets |= AttributeTargets.Constructor | AttributeTargets.Property;
}
attribute.ConstructorArguments[0] = new CustomAttributeArgument(attribute.ConstructorArguments[0].Type, attribute_targets);
attribute.Properties.Add(new CustomAttributeNamedArgument("AllowMultiple", new CustomAttributeArgument(attribute.Module.TypeSystem.Boolean, multiple)));
attribute.projection = projection;
}
