// Unity ships annotations, but they're out of date. Specifically, the [PublicAPI] attribute is
// defined with [MeansImplicitUse] instead of [MeansImplicitUse(ImplicitUseTargetFlags.WithMembers)]
// So if applied to a class, only the class is marked as in use, while the members aren't. This
// provider will apply [UsedImplicitly(ImplicitUseTargetFlags.WithMembers)] to any type that
// has the old [PublicAPI] applied
private static bool GetPublicAPIImplicitlyUsedAttribute(IClrDeclaredElement element,
out ICollection <IAttributeInstance> collection)
{
collection = EmptyList <IAttributeInstance> .InstanceList;
if (!(element is ITypeElement type) || !element.IsFromUnityProject())
{
return(false);
}
foreach (var attributeInstance in type.GetAttributeInstances(ourPublicAPIAttribute, false))
{
var attributeType = attributeInstance.GetAttributeType();
if (!(attributeType.Resolve().DeclaredElement is ITypeElement typeElement))
{
continue;
}
var meansImplicitUse = typeElement.GetAttributeInstances(ourMeansImplicitUseAttribute, false)
.FirstOrDefault();
if (meansImplicitUse?.Constructor == null || !meansImplicitUse.Constructor.IsDefault)
{
continue;
}
var flagsType = TypeFactory.CreateTypeByCLRName(ourImplicitUseTargetFlags, element.Module);
collection = new[]
{
new SpecialAttributeInstance(
ourUsedImplicitlyAttributeFullName, element.Module, () => new[]
{ new AttributeValue(new ConstantValue(3, flagsType)) }
)
};
return(true);
}
return(false);
}
// Treat Unity's RangeAttribute as ReSharper's ValueRangeAttribute annotation
private bool GetValueRangeAttribute(IClrDeclaredElement element,
out ICollection <IAttributeInstance> collection)
{
collection = EmptyList <IAttributeInstance> .InstanceList;
if (!(element is IField field) || !element.IsFromUnityProject())
{
return(false);
}
if (!myUnityApi.IsSerialisedField(field))
{
return(false);
}
// Integer value analysis only works on integers, but it will make use of annotations applied to values that
// are convertible to int, such as byte/sbyte and short/ushort. It doesn't currently use values applied to
// uint, or long/ulong, but it is planned, so we'll apply to all sizes of integer.
var predefinedType = myPredefinedTypeCache.GetOrCreatePredefinedType(element.Module);
if (!Equals(field.Type, predefinedType.Int) && !Equals(field.Type, predefinedType.Uint) &&
!Equals(field.Type, predefinedType.Long) && !Equals(field.Type, predefinedType.Ulong) &&
!Equals(field.Type, predefinedType.Short) && !Equals(field.Type, predefinedType.Ushort) &&
!Equals(field.Type, predefinedType.Byte) && !Equals(field.Type, predefinedType.Sbyte))
{
return(false);
}
foreach (var attributeInstance in field.GetAttributeInstances(KnownTypes.RangeAttribute, false))
{
// Values are floats, but applied to an integer field. Convert to integer values
var unityFrom = attributeInstance.PositionParameter(0);
var unityTo = attributeInstance.PositionParameter(1);
if (!unityFrom.IsConstant || !unityFrom.ConstantValue.IsFloat() ||
!unityTo.IsConstant || !unityTo.ConstantValue.IsFloat())
{
continue;
}
// The check above means this is not null. We take the floor, because that's how Unity works.
// E.g. Unity's Inspector treats [Range(1.7f, 10.9f)] as between 1 and 10 inclusive
var from = Convert.ToInt64(Math.Floor((float)unityFrom.ConstantValue.Value.NotNull()));
var to = Convert.ToInt64(Math.Floor((float)unityTo.ConstantValue.Value.NotNull()));
collection = CreateRangeAttributeInstance(element, predefinedType, from, to);
return(true);
}
foreach (var attributeInstance in field.GetAttributeInstances(KnownTypes.MinAttribute, false))
{
var unityMinValue = attributeInstance.PositionParameter(0);
if (!unityMinValue.IsConstant || !unityMinValue.ConstantValue.IsFloat())
{
continue;
}
// Even though the constructor for ValueRange takes long, it only works with int.MaxValue
var min = Convert.ToInt64(Math.Floor((float)unityMinValue.ConstantValue.Value.NotNull()));
var max = int.MaxValue;
collection = CreateRangeAttributeInstance(element, predefinedType, min, max);
return(true);
}
return(false);
}
