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# Changelog
`hslua-objectorientation` uses [PVP Versioning][].
## hslua-objectorientation-2.3.1
Released 2024-01-18.
- Relaxed upper bound for text, containers, and bytestring,
allowing text-2.1, containers-0.7, and bytestring-0.12.
## hslua-objectorientation-2.3.0
Released 2023-03-13.
- Export all constructors and functions of type `Property`.
- Renamed `peekUD` to `peekUDGeneric` and `pushUD` to
`pushUDGeneric`. Functions with the old names are now
now defined hslua-packaging.
- Hook for udtype metatable initializer. The function
`pushUDGeneric` takes an additional `hook` parameter. The hook
operation can be used to perform additional setup operations,
e.g., for documentation.
The old `pushUD` function can be recovered with
pushUD = pushUDGeneric (\_ -> pure ())
The `hslua-packaging` now exports a `pushUD` functions that is
specialized to documented types.
- Export new function `initTypeGeneric`: The function ensures
that a type's metatable is initialized and available from the
registry. Just like with `pushUDGeneric`, a hook can be used
to augment the initialization.
- Type info for properties: Properties are amended with
information on the property's type. The functions `property`,
`possibleProperty`, and `readonly` each now come with typed
version `property'`, `possibleProperty'`, and `readonly`'.
This allows to specify the type of a property value.
- Functions for object typing info: The functions `udDocs` and
`udTypeSpec` are added, enabling the generation of typing
information for UDType objects.
## hslua-objectorientation-2.2.1
Released 2022-06-19.
- Require hslua-core-2.2.1.
- Require hslua-marshalling-2.2.1.
## hslua-objectorientation-2.2.0.1
Released 2022-05-20.
- Relax upper bound for mtl, allow mtl-2.3.
## hslua-objectorientation-2.2.0
Released 2022-02-19.
- Require version 2.2 of hslua-core and hslua-marshalling.
## hslua-objectorientation-2.1.0
Released 2022-01-29.
- Allow integers as aliases: Aliases can now be of type
`AliasIndex`, so integers can now be defined as aliases for
other properties. The function `alias` now takes an
`AliasIndex` instead of a `Name`; the change entails
modifications to the types `UDTypeWithList`, `UDType`, and
`Member`. Also, `AliasIndex` is made into an instance of the
Eq and Ord type classes.
- Reworked list representation of objects, allowing write access
to list components.
The `ListSpec` type has been updated and contains now a pair
of pairs, where the inner pairs define how to push and
retrieve lists, respectively. Users of the `deftypeGeneric'`
function will have to update their code.
- Fixed some integer type declarations in C code. Some variables
had been given incorrect types, like `int` instead of
`lua_Integer`. They are usually the same, but may differ in
some setups.
- Require hslua-core-2.1.0 and hslua-marshalling-2.1.0, or
later.
## hslua-objectorientation-2.0.1
Released 2021-11-04.
- Excludes absent properties from `pairs`: Properties that are
optional and not present in a sum-type value are no longer
included in the iterator output produced by `pairs` (i.e., the
`__pairs` metamethod). Previously, the names of absent
properties were pushed with a `nil` value.
## hslua-objectorientation-2.0.0
Released 2021-10-21.
- Published without warning.
[PVP Versioning]: https://pvp.haskell.org
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