IssueTracker

Add ClassDiscriminator support for SavedState Serialization 
 
- Introduces `ClassDiscriminatorMode`, allowing the `Encoder` to add a `type` class discriminator entry during serialization. 
- The `ClassDiscriminatorMode` does not affect `Polymorphic` serialization; that is handled by `kotlinx.serialization.PolymorphicSerializer`. 
- The serialized structure includes: 
  1. A class discriminator string (`[type=serialName]`). 
  2. The serialized value of type `[T]`. 
 
RelNote: "Include support for `classDiscriminator` and `classDiscriminatorMode` on `SavedStateConfig`." 
Bug: 395104517 
Test: N/A 
Change-Id: I69b66678ccae14507e0a6d1b8d7d11c5b564ba9f

Files:

• M savedstate/savedstate/api/current.txt
• M savedstate/savedstate/api/restricted_current.txt
• M savedstate/savedstate/bcv/native/current.txt
• A savedstate/savedstate/src/commonMain/kotlin/androidx/savedstate/serialization/ClassDiscriminatorMode.kt
• M savedstate/savedstate/src/commonMain/kotlin/androidx/savedstate/serialization/SavedStateCodecUtils.kt
• M savedstate/savedstate/src/commonMain/kotlin/androidx/savedstate/serialization/SavedStateConfig.kt
• M savedstate/savedstate/src/commonMain/kotlin/androidx/savedstate/serialization/SavedStateEncoder.kt

Hash: f37eca7880a2b1732842bbe2e02d3e8fdeda34e4
Date:  Fri Feb 07 16:56:00 2025

Add tests for `ClassDiscriminatorMode` 
 
- Added a base testing class for easier serialization testing across scenarios. 
- Included tests for all `ClassDiscriminatorMode`: `ALL_OBJECTS` and `POLYMORPHIC`. 
 
Bug: 395104517 
Test: SavedStateCodecClassDiscriminatorAllObjectsTest 
Test: SavedStateCodecClassDiscriminatorPolymorphicTest 
Change-Id: I431760be230f93f6f95a26c943f077ac54bd851e

Files:

• M savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/SavedStateCodecTestUtils.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/SavedStateCodecClassDiscriminatorAllObjectsTest.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/SavedStateCodecClassDiscriminatorPolymorphicTest.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/utils/SavedStateContextualClasses.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/utils/SavedStatePolymorphicClasses.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/utils/SavedStateSerializableClasses.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/utils/SavedStateSerializableCollections.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/utils/SavedStateSerializationBaseTest.kt

Hash: 4e000288e65fe7713c755432551eb8a77b4bb569
Date:  Fri Feb 14 14:44:08 2025

Add `encodeDefaults` to `SavedStateConfig` 
 
- Allows customization of whether properties with default values should be encoded, defaulting to false. 
- `encodeDefaults = true` ensures all default properties are encoded. It’s useful in specific environments, like debug builds for easier debugging of SavedState or during testing for simpler verification — while skipping encoding in production (`encodeDefaults = false`). 
 
RelNote: "Add `encodeDefaults` to `SavedStateConfig`, allowing customizing whether properties with default values should be encoded." 
Bug: 395104517 
Test: SavedStateCodecTest 
Change-Id: I893cc44c323c972d388476bb7593259d595517af

Files:

• M savedstate/savedstate/api/current.txt
• M savedstate/savedstate/api/restricted_current.txt
• M savedstate/savedstate/bcv/native/current.txt
• M savedstate/savedstate/src/commonMain/kotlin/androidx/savedstate/serialization/SavedStateConfig.kt
• M savedstate/savedstate/src/commonMain/kotlin/androidx/savedstate/serialization/SavedStateEncoder.kt
• A savedstate/savedstate/src/commonTest/kotlin/androidx/savedstate/serialization/SavedStateCodecEncodeDefaultsTest.kt

Hash: 86936cf1545742a5cd3d90d721b2cd29751770d3
Date:  Fri Feb 14 23:42:05 2025