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[pigeon] Use function types in order to avoid dynamic calls#11130

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auto-submit[bot] merged 2 commits intoflutter:mainfrom
srawlins:function-type
Feb 26, 2026
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[pigeon] Use function types in order to avoid dynamic calls#11130
auto-submit[bot] merged 2 commits intoflutter:mainfrom
srawlins:function-type

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@srawlins
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Each callback is expected to take zero parameters, and a return type of void allows all return types.

This removes a dynamic call, and improves type safety.

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  • I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
  • I read the [Tree Hygiene] page, which explains my responsibilities.
  • I read and followed the [relevant style guides] and ran [the auto-formatter].
  • I signed the [CLA].
  • The title of the PR starts with the name of the package surrounded by square brackets, e.g. [shared_preferences]
  • I [linked to at least one issue that this PR fixes] in the description above.
  • I followed [the version and CHANGELOG instructions], using [semantic versioning] and the [repository CHANGELOG style], or I have commented below to indicate which documented exception this PR falls under[^1].
  • I updated/added any relevant documentation (doc comments with ///).
  • I added new tests to check the change I am making, or I have commented below to indicate which [test exemption] this PR falls under[^1].
  • All existing and new tests are passing.

@srawlins srawlins requested a review from tarrinneal as a code owner February 26, 2026 16:41
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It looks like this pull request may not have tests. Please make sure to add tests or get an explicit test exemption before merging.

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. If you believe this PR qualifies for a test exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!). The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group.

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This pull request refactors several methods in the Indent class within packages/pigeon/lib/src/generator_tools.dart. Specifically, the func parameter in addScoped, writeScoped, and nest methods has been updated from the generic Function type to the more specific void Function(). This enhances type safety and, as a result, a lint suppression comment for avoid_dynamic_calls has been removed from the nest method.

@srawlins
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I read through the CHANGELOG policy, but I'm still not certain whether this requires a changelog entry or not. 😅

@stuartmorgan-g
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test-exempt: code refactor with no semantic change

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We can exempt this from the usual version and changelog requirement since it's so clearly a no-op for clients.

@stuartmorgan-g stuartmorgan-g added override: no versioning needed Override the check requiring version bumps for most changes override: no changelog needed Override the check requiring CHANGELOG updates for most changes labels Feb 26, 2026
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LGTM

@stuartmorgan-g stuartmorgan-g added the autosubmit Merge PR when tree becomes green via auto submit App label Feb 26, 2026
@auto-submit auto-submit bot merged commit 79c529a into flutter:main Feb 26, 2026
81 checks passed
@srawlins srawlins deleted the function-type branch February 26, 2026 18:30
github-merge-queue bot pushed a commit to flutter/flutter that referenced this pull request Feb 27, 2026
flutter/packages@e1d0169...a27d7c5

2026-02-26 [email protected] [pigeon] Tidy GeneratorAdapters to be
const, with getters instead of fields (flutter/packages#11131)
2026-02-26 [email protected] [webview_flutter] Remove
usesCleartextTraffic (flutter/packages#11124)
2026-02-26 [email protected] [pigeon]: Correct comment references in
doc comments (flutter/packages#11129)
2026-02-26 [email protected] [webview_flutter_android] Remove
usesCleartextTraffic (flutter/packages#11122)
2026-02-26 [email protected] Roll Flutter from
dad6f9d to b31548f (39 revisions) (flutter/packages#11116)
2026-02-26 [email protected] [espresso] Remove usesCleartextTraffic
(flutter/packages#11125)
2026-02-26 [email protected] [pigeon] Use function types in order to
avoid dynamic calls (flutter/packages#11130)
2026-02-26 [email protected] [shared_preferences] Revert
androidx.datastore:datastore to 1.1.7 (flutter/packages#11128)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages-flutter-autoroll
Please CC [email protected] on the revert to ensure that a
human
is aware of the problem.

To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
xxxOVALxxx pushed a commit to xxxOVALxxx/flutter that referenced this pull request Mar 10, 2026
…r#183009)

flutter/packages@e1d0169...a27d7c5

2026-02-26 [email protected] [pigeon] Tidy GeneratorAdapters to be
const, with getters instead of fields (flutter/packages#11131)
2026-02-26 [email protected] [webview_flutter] Remove
usesCleartextTraffic (flutter/packages#11124)
2026-02-26 [email protected] [pigeon]: Correct comment references in
doc comments (flutter/packages#11129)
2026-02-26 [email protected] [webview_flutter_android] Remove
usesCleartextTraffic (flutter/packages#11122)
2026-02-26 [email protected] Roll Flutter from
dad6f9d to b31548f (39 revisions) (flutter/packages#11116)
2026-02-26 [email protected] [espresso] Remove usesCleartextTraffic
(flutter/packages#11125)
2026-02-26 [email protected] [pigeon] Use function types in order to
avoid dynamic calls (flutter/packages#11130)
2026-02-26 [email protected] [shared_preferences] Revert
androidx.datastore:datastore to 1.1.7 (flutter/packages#11128)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages-flutter-autoroll
Please CC [email protected] on the revert to ensure that a
human
is aware of the problem.

To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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autosubmit Merge PR when tree becomes green via auto submit App override: no changelog needed Override the check requiring CHANGELOG updates for most changes override: no versioning needed Override the check requiring version bumps for most changes p: pigeon

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