UE-4916
#change Replaced CLASS_Temporary (UHT-only flag) with CLASS_Constructed to check if a class needs to be constructed or not in generated code
#change Modified code generator to make sure UClasses don't get reconstructed if not required
[CL 2351525 by Robert Manuszewski in Main branch]
In order to use new feature user have to change GENERATED_UCLASS_BODY() macro to the new GENERATED_BODY(). Then no constructor is implicitly declared. If there is no constructor declared in UCLASS then PCIP one is declared and defined that passes PCIP down to super-class. On the other hand if there is a constructor declared then UObject system expects to have one of the default or PCIP constructor to initialize a class during loading from disk, default object creation, etc. and it expects that user will declare and define one.
There is a possibility now to create UCLASS with the default constructor (i.e. no PCIP).
New macro is encouraged by standard classes and in-editor wizards templates.
#codereview Robert.Manuszewski
[CL 2325282 by Jaroslaw Palczynski in Main branch]
* InterfaceCast deprecation version number changed to 4.6.
* Double-underscored identifiers replaced with names which aren't reserved.
#codereview robert.manuszewski,mike.fricker
[CL 2314098 by Steve Robb in Main branch]
* Cast can be used for every UClass/interface cast:
- Up/down UObject hierarchy.
- From interfaces to UObjects.
- From UObjects to interfaces.
- Between interfaces.
* InterfaceCast has been deprecated.
* dynamic_cast can now be used instead of Cast.
* dynamic_cast between two UType pointers will be equivalent to Cast, but with dynamic_cast syntax and semantics.
* dynamic_cast of references is equivalent to a CastChecked - if it fails, it will fatally log rather than throw a std::bad_cast exception (UE doesn't support exceptions).
* If the two types involved are not UTypes, it should continue to act like a normal dynamic_cast.
* dynamic_cast<void*> works as expected.
* All/many Casts in CoreUObject changed to dynamic_cast to show this behaviour.
* Some refactoring.
#codereview robert.manuszewski,mike.fricker
[CL 2312800 by Steve Robb in Main branch]
The main changes are as follows:
1. moved Json out of Core into own module 'Json'
2. moved 3 i10n classes (Json serializers) from Core into a new module 'Internationalization' *
3. fixed up 2 i10n classes in Core to not instantiate the 3 Json-based classes. instead they are now passed in as a dependency
*) (2) and (3) were required to decouple the I10n code in Core from Json. Much of the i10n code probably doesn't belong into Core in the first place, but there is no time to fix this right now.
The following cosmetic changes were also made:
- NULL to nullptr
- namespaced enums to enum classes
- renamed the three i10n Json serializer classes to comply with naming conventions
- removed file header comments (not used)
- documentation, spelling, spacing etc,
#UpgradeNotes: If your module is including Json.h then you have to add 'Json' to your Build.cs module dependencies.
#ReviewedBy: justin.sargent, saul.abreu
[CL 2310420 by Max Preussner in Main branch]
