private CountAttribute GetCountAttribute(ParameterDefinition parameter)
{
var attribute = parameter.GetCustomAttribute(AttributeNames.Count, throwIfNoneFound: false);
if (attribute is null)
{
return(null);
}
return(new CountAttribute
{
Count = GetAttributeField <int>(attribute, nameof(CountAttribute.Count)),
Parameter = GetAttributeField <string>(attribute, nameof(CountAttribute.Parameter)),
Computed = GetAttributeField <string>(attribute, nameof(CountAttribute.Computed))
});
}
/// <summary>
/// Walk from the parameter up to the containing type, looking for an instance
/// of the specified attribute type, returning it if found.
/// </summary>
/// <param name="parameter">The parameter to check.</param>
/// <param name="attributeType">The attribute type to look for.</param>
private static CustomAttribute GetHierarchicalAttributeOrNull(ParameterDefinition parameter, Type attributeType)
{
if (parameter == null)
{
return(null);
}
var attribute = parameter.GetCustomAttribute(attributeType);
if (attribute != null)
{
return(attribute);
}
var method = parameter.Method as MethodDefinition;
if (method == null)
{
return(null);
}
return(GetHierarchicalAttributeOrNull(method, attributeType));
}