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Ran 10 Aug 2026 01:27PM UTC

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Build # 31392236366

Build Type

push

github

Committed by

web-flow

Commit Message

[code_assets] Make `LinkMode` and `LinkModePreference` closed (#3462)

Makes the link mode and link mode preference closed enums / a closed tagged union.

https://github.com/dart-lang/native/pull/3413#issuecomment-4914618509

Code assets changes:

* Changes the JSON schema to a closed enum for link mode preference and closed tagged union for link mode.
  * So encountering an unknown value in a json is now a parse error.
  * And will print a more elaborate error message.
* Sealed the `LinkMode` class.
* Skipping a version bump, we'll bump to 2.0 in the next PR due to breaking changes.

JSON syntax generator changes:

* Updated closed enum generation to pass valid enum values to `_throwFormatException`.
* Updated closed tagged union generationto pass valid discriminator tag values to `_throwFormatException`.
* Added `Set<String>? expectedValues` parameter to `throwFormatException` and `errorString` to format error messages as `Expected one of 'a', 'b'`.
* Made `expectedType` an optional named parameter on `throwFormatException` and `errorString` in `helper_library.dart`.
* Added a json path to the constructor for enums to be able to give the json path in the error message.

Other package changes:

* Update all the generated syntax (no functional change as they have no closed enums).

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