/// <summary>
/// Called by the <b>ProvideAspects</b> method of <see cref="FieldValidationAttribute"/>.
/// Since a type can have many validated fields but needs a single instance of the current type-level aspect,
/// this method ensures that each validated type has a single <see cref="TypeValidationAspect"/>
/// and registers all validated fields in this aspect.
/// </summary>
/// <param name="field">Validated field.</param>
/// <param name="validator">Field validator.</param>
/// <param name="aspects">Collection to which the new aspect should (eventually) be added.</param>
internal static IEnumerable <AspectInstance> RegisterFieldValidator(LocationInfo location, FieldValidationAttribute validator)
{
Type declaringType = location.DeclaringType;
TypeValidationAspect instance;
// Do I have already an aspect for this type?
if (!instances.TryGetValue(declaringType.FullName, out instance))
{
// No? Create one.
instance = new TypeValidationAspect();
instances.Add(declaringType.FullName, instance);
yield return(new AspectInstance(declaringType, instance));
}
// Index the validator in the new aspect instance.
instance.validators.Add(validator);
}
/// <summary>
/// Called by the <b>ProvideAspects</b> method of <see cref="FieldValidationAttribute"/>.
/// Since a type can have many validated fields but needs a single instance of the current type-level aspect,
/// this method ensures that each validated type has a single <see cref="TypeValidationAspect"/>
/// and registers all validated fields in this aspect.
/// </summary>
/// <param name="field">Validated field.</param>
/// <param name="validator">Field validator.</param>
/// <param name="aspects">Collection to which the new aspect should (eventually) be added.</param>
internal static IEnumerable<AspectInstance> RegisterFieldValidator( LocationInfo location, FieldValidationAttribute validator)
{
Type declaringType = location.DeclaringType;
TypeValidationAspect instance;
// Do I have already an aspect for this type?
if ( !instances.TryGetValue( declaringType.FullName, out instance ) )
{
// No? Create one.
instance = new TypeValidationAspect();
instances.Add( declaringType.FullName, instance );
yield return new AspectInstance( declaringType, instance );
}
// Index the validator in the new aspect instance.
instance.validators.Add( validator );
}
public IEnumerable <AspectInstance> ProvideAspects(object targetElement)
{
return(TypeValidationAspect.RegisterFieldValidator((LocationInfo)targetElement, this));
}