public bool Process(ref TypeSearchInfo info, ref string errorMessage)
{
return(this.rule(ref info, ref errorMessage));
}
static DrawerUtilities()
{
// This method is *very* expensive performance-wise and generates lots of garbage due to liberal use of LINQ for readability.
// This is acceptable, as it only runs once per AppDomain reload, and only ever in the editor.
//
// First, get all relevant types
//
var typesToSearch = AssemblyUtilities.GetTypes(AssemblyTypeFlags.CustomTypes | AssemblyTypeFlags.UnityEditorTypes)
.Where(type => !type.IsAbstract && type.IsClass && !type.IsDefined(typeof(OdinDontRegisterAttribute), false) && (typeof(OdinDrawer).IsAssignableFrom(type) || (typeof(GUIDrawer).IsAssignableFrom(type) && (!(type.Namespace ?? "").StartsWith("Unity", StringComparison.InvariantCulture) || !ExcludeUnityDrawers.Contains(type.Name)))))
.ToArray();
//
// Find all regular Unity property and decorator drawers and create alias drawers for them
//
IEnumerable <Type> unityPropertyDrawers;
IEnumerable <Type> unityPropertyAttributeDrawers;
IEnumerable <Type> unityDecoratorDrawers;
if (DrawerUtilities.CustomPropertyDrawerTypeField != null && DrawerUtilities.CustomPropertyDrawerUseForChildrenField != null)
{
unityPropertyDrawers =
typesToSearch.Where(type => type.IsGenericTypeDefinition == false && typeof(PropertyDrawer).IsAssignableFrom(type) && type.GetConstructor(Type.EmptyTypes) != null)
.SelectMany(type => type.GetCustomAttributes <CustomPropertyDrawer>(true).Select(attr => new { Type = type, Attribute = attr }))
.Where(n =>
{
if (n.Attribute != null)
{
var drawnType = CustomPropertyDrawerTypeField.GetValue(n.Attribute) as Type;
if (drawnType != null && !typeof(PropertyAttribute).IsAssignableFrom(drawnType))
{
return(true);
}
}
return(false);
})
.Select(n =>
{
var drawnType = (Type)CustomPropertyDrawerTypeField.GetValue(n.Attribute);
if (drawnType.IsAbstract || (bool)DrawerUtilities.CustomPropertyDrawerUseForChildrenField.GetValue(n.Attribute))
{
var tArg = typeof(AbstractTypeUnityPropertyDrawer <, ,>).GetGenericArguments()[2];
return(typeof(AbstractTypeUnityPropertyDrawer <, ,>).MakeGenericType(n.Type, drawnType, tArg));
}
else
{
return(typeof(UnityPropertyDrawer <,>).MakeGenericType(n.Type, drawnType));
}
});
unityPropertyAttributeDrawers =
typesToSearch.Where(type => type.IsGenericTypeDefinition == false && typeof(PropertyDrawer).IsAssignableFrom(type) && type.GetConstructor(Type.EmptyTypes) != null)
.SelectMany(type => type.GetCustomAttributes <CustomPropertyDrawer>(true).Select(attr => new { Type = type, Attribute = attr }))
.Where(n =>
{
if (n.Attribute != null)
{
var drawnType = CustomPropertyDrawerTypeField.GetValue(n.Attribute) as Type;
if (drawnType != null && typeof(PropertyAttribute).IsAssignableFrom(drawnType))
{
return(true);
}
}
return(false);
})
.Select(n =>
{
Type drawnType = (Type)CustomPropertyDrawerTypeField.GetValue(n.Attribute);
if ((bool)DrawerUtilities.CustomPropertyDrawerUseForChildrenField.GetValue(n.Attribute))
{
var tAttributeArgParam = typeof(UnityPropertyAttributeDrawer <, ,>).GetGenericArguments()[1];
return(typeof(UnityPropertyAttributeDrawer <, ,>).MakeGenericType(n.Type, tAttributeArgParam, drawnType));
}
else
{
return(typeof(UnityPropertyAttributeDrawer <, ,>).MakeGenericType(n.Type, drawnType, typeof(PropertyAttribute)));
}
});
unityDecoratorDrawers =
typesToSearch.Where(type => type.IsGenericTypeDefinition == false && typeof(DecoratorDrawer).IsAssignableFrom(type) && type.GetConstructor(Type.EmptyTypes) != null)
.Select(type => new { Type = type, Attribute = type.GetCustomAttribute <CustomPropertyDrawer>(true) })
.Where(n => n.Attribute != null)
.Select(n => new { Type = n.Type, Attribute = n.Attribute, DrawnType = CustomPropertyDrawerTypeField.GetValue(n.Attribute) as Type })
.Where(n => n.DrawnType != null && typeof(PropertyAttribute).IsAssignableFrom(n.DrawnType))
.Select(n =>
{
if ((bool)DrawerUtilities.CustomPropertyDrawerUseForChildrenField.GetValue(n.Attribute))
{
var tAttributeArgParam = typeof(UnityDecoratorAttributeDrawer <, ,>).GetGenericArguments()[1];
return(typeof(UnityDecoratorAttributeDrawer <, ,>).MakeGenericType(n.Type, tAttributeArgParam, n.DrawnType));
}
else
{
return(typeof(UnityDecoratorAttributeDrawer <, ,>).MakeGenericType(n.Type, n.DrawnType, typeof(PropertyAttribute)));
}
});
}
else
{
Debug.LogWarning("Could not find internal fields 'm_Type' and/or 'm_UseForChildren' in type CustomPropertyDrawer in this version of Unity; support for legacy Unity PropertyDrawers and DecoratorDrawers have been disabled in Odin's inspector. Please report this on Odin's issue tracker.");
unityPropertyDrawers = Enumerable.Empty <Type>();
unityPropertyAttributeDrawers = Enumerable.Empty <Type>();
unityDecoratorDrawers = Enumerable.Empty <Type>();
}
DrawerUtilities.AllDrawerTypes = typesToSearch
.Where(type => typeof(OdinDrawer).IsAssignableFrom(type))
.AppendWith(unityPropertyDrawers)
.AppendWith(unityPropertyAttributeDrawers)
.AppendWith(unityDecoratorDrawers)
.OrderByDescending(type => GetDrawerPriority(type))
.ToList();
//DrawerUtilities.SearchIndex.IndexingRules.Add(new TypeMatchIndexingRule(
// "DEBUG",
// (ref TypeSearchInfo info, ref string error) =>
// {
// Debug.Log("Indexed drawer: " + info.MatchType.GetNiceFullName());
// return true;
// }));
// Unity drawers have a peculiar method of generic target selection,
// where you pass in the generic type definition that you wish to draw.
//
// We need to support this, for Unity's own legacy drawers.
DrawerUtilities.SearchIndex.MatchRules.Add(new TypeSearch.TypeMatchRule(
"Unity Drawer Generic Target Matcher",
(info, targets) =>
{
if (targets.Length != 1)
{
return(null);
}
if (!info.Targets[0].IsGenericTypeDefinition)
{
return(null);
}
var baseDef = info.MatchType.GetGenericTypeDefinition();
bool abstractUnityValueDrawer = baseDef == typeof(AbstractTypeUnityPropertyDrawer <, ,>);
bool plainUnityValueDrawer = baseDef == typeof(UnityPropertyDrawer <,>);
if (!(abstractUnityValueDrawer || plainUnityValueDrawer))
{
return(null);
}
if (abstractUnityValueDrawer)
{
if (targets[0].ImplementsOpenGenericType(info.Targets[0]))
{
var args = info.MatchType.GetGenericArguments();
return(info.MatchType.GetGenericTypeDefinition().MakeGenericType(args[0], targets[0], targets[0]));
}
}
else
{
if (!targets[0].IsGenericType)
{
return(null);
}
if (targets[0].GetGenericTypeDefinition() == info.Targets[0])
{
var args = info.MatchType.GetGenericArguments();
return(info.MatchType.GetGenericTypeDefinition().MakeGenericType(args[0], targets[0]));
}
}
return(null);
})
);
DrawerUtilities.SearchIndex.AddIndexedTypes(
DrawerUtilities.AllDrawerTypes
.Select((type, i) =>
{
var info = new TypeSearchInfo()
{
MatchType = type,
Priority = DrawerUtilities.AllDrawerTypes.Count - i,
Targets = null
};
if (type.ImplementsOpenGenericClass(typeof(OdinValueDrawer <>)))
{
info.Targets = type.GetArgumentsOfInheritedOpenGenericClass(typeof(OdinValueDrawer <>));
}
else if (type.ImplementsOpenGenericClass(typeof(OdinAttributeDrawer <>)))
{
if (type.ImplementsOpenGenericClass(typeof(OdinAttributeDrawer <,>)))
{
info.Targets = type.GetArgumentsOfInheritedOpenGenericClass(typeof(OdinAttributeDrawer <,>));
InvalidAttributeTargetUtility.RegisterValidAttributeTarget(info.Targets[0], info.Targets[1]);
}
else
{
info.Targets = type.GetArgumentsOfInheritedOpenGenericClass(typeof(OdinAttributeDrawer <>));
}
}
else if (type.ImplementsOpenGenericClass(typeof(OdinGroupDrawer <>)))
{
info.Targets = type.GetArgumentsOfInheritedOpenGenericClass(typeof(OdinGroupDrawer <>));
}
else if (!type.IsFullyConstructedGenericType())
{
info.Targets = type.GetGenericArguments();
}
info.Targets = info.Targets ?? Type.EmptyTypes;
return(info);
})
);
}