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[objective_c] fix toNSInputStream double copy - #3762
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brianquinlan
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toNSInputStream double copy
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #3762 +/- ##
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+ Coverage 85.84% 87.91% +2.06%
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Files 322 310 -12
Lines 20877 19789 -1088
==========================================
- Hits 17922 17397 -525
+ Misses 2955 2392 -563
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liamappelbe
approved these changes
Oct 30, 2026
# Conflicts: # pkgs/objective_c/CHANGELOG.md # pkgs/objective_c/src/input_stream_adapter.m
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Revisions updated by `dart tools/rev_sdk_deps.dart native`. native (https://github.com/dart-lang/native/compare/e0ca7c6..b442038): b442038de Mon Nov 2 10:46:15 2026 -0800 Brian Quinlan [objective_c] support `scheduleInRunLoop:forMode:` (dart-lang/native#3763) 264318e75 Fri Oct 30 12:49:03 2026 -0700 Brian Quinlan [objective_c] fix `toNSInputStream` double copy (dart-lang/native#3762) 63f3e8641 Fri Oct 30 12:09:04 2026 -0700 Brian Quinlan [objective_c] avoid an extra copy in `toNSData` (dart-lang/native#3761) ad203b01d Fri Oct 30 11:48:15 2026 -0700 Brian Quinlan [objective_c] increase read chunk size (dart-lang/native#3760) fa112d95b Fri Oct 30 09:14:23 2026 -0700 Brian Quinlan [objective_c] Fix a `NSInputStream` hang (dart-lang/native#3751) 035f4ef38 Fri Oct 30 09:23:30 2026 +0100 Michael Goderbauer [jnigen] Fix race conditions in tests (dart-lang/native#3767) d58a8f514 Fri Oct 30 00:57:49 2026 -0400 Jhin Lee [code_assets] Preserve full Apple deployment versions (dart-lang/native#3742) Migrate `MacOSCodeConfig` in `pkg/dartdev/lib/src/native_assets.dart` from the deprecated `targetVersion` parameter to `deploymentVersion: AppleVersion(...)`. Change-Id: I2df469fc05bda2c1db051f43e803fe5145f7c246 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/573102 Auto-Submit: Nate Bosch <[email protected]> Reviewed-by: Nicholas Shahan <[email protected]> Reviewed-by: Ben Konyi <[email protected]> Commit-Queue: Ben Konyi <[email protected]>
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Description
Currently the
NSInputStreamreturned bytoNSInputStreamdoes unnecessary copies for every byte that is accessed throughread:maxLength:addData, which is called from Dart, appends anNSDatato the end of the_databufferread:maxLengthshifts the data in_dataafter every readThis change maintains an array of
NSDatato avoid those two copies.PR Checklist
dart tool/ci.dart --alllocally and resolved all issues identified. This ensures the PR is formatted, has no lint errors, and ran all code generators. This applies to the packages part of the toplevelpubspec.yamlworkspace.CHANGELOG.mdfor the relevant packages. (Not needed for small changes such as doc typos).