☂️ New analyzer plugin system #53402

srawlins · 2023-08-31T15:31:11Z

matanlurey · 2023-09-01T02:08:02Z

This is really exciting Sam! If you could use any help trying out prototypes I'd volunteer some time!

parlough · 2023-10-24T15:33:47Z

@srawlins Would you mind creating go links for your design docs on https://github.com/flutter/website/blob/main/firebase.json? Then you can add them to the top of your docs making them a bit easier to share and discuss publicly.

Community members often follow new go links on flutter.dev as well.

In order for CorrectionProducers to be used in analyzer plugins, we need to access DartFixContributor which needs to compute fixes via FixProcessor. So both DartFixContributor and FixProcessor need to be moved into analyzer_plugin (eventually). For now, to support prototyping, I am moving FixProcessor to its own library, and separating all of the built in mappings (from diagnostic to producer generators). I think this separation actually stands on its own as being tidier, simplifying fix_internal.dart, and separating code from data, as it were. Work towards #53402 Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try Change-Id: I3b4fadc7ed94c23597d72bef7dcd832380d34e9a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/345561 Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com>

With a simple move of two classes, Fix and FixContent. The class moves are not exactly no-ops. I moved each class into its own library and made the following changes: * Start doc comments with third person verbs [1]. * Make `Fix` class **final**. * Make `FixContext` class **interface**. [1]: https://dart.dev/effective-dart/documentation#prefer-starting-function-or-method-comments-with-third-person-verbs Work towards #53402 Cq-Include-Trybots: dart-internal/g3.dart-internal.try:g3-cbuild-try Change-Id: Ic046b236d634543832825db8746e0abdca5191fe Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/355889 Reviewed-by: Alexander Thomas <athom@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

* Combine DartFixContext and DartFixContextImpl into one class; separation seems unnecessary. * Change constructor (which was on DartFixContextImpl) to use all named parameters. * Change `resolveResult` field to `resolvedResult`, since the type is called `ResolvedUnitResult`. * Start doc comments with third person verbs [1]. [1]: https://dart.dev/effective-dart/documentation#prefer-starting-function-or-method-comments-with-third-person-verbs Work towards #53402 Change-Id: Idb3c6776f899d5bc9b634c1d9c4b998de2603d04 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/358382 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

`_getInsertionLocationTop` and `addLibraryImports` are each moved to extract_method.dart, as the only location where they were used. We get to delete the `_InsertionLocation` class. The tests are also moved, unchanged, and CorrectionUtilsTest is very much simplified. Bug: #53402 Change-Id: Ia410f04a837d85a0e06ec523d156c6c6c8bf6a3b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363402 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

…sites Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Bug: #53402 Change-Id: Id62b06f3419820d4a74b34b51a6022792bcef7ab Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363404 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

…nto extract_method Bug: #53402 Change-Id: I4fca3482c27520328339d1d1f0b6b541399ed612 Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363501 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

We have chosen a new name for this package. So before we write more code inside, we need to move everything from 'server_plugin' to 'analysis_server_plugin'. There are some steps do doing so, to not break various infra: 1. Land this change, introducing the new package in the SDK, but no dependencies on it. 2. Land this change independently in google3 (the package is not yet "unbundled.") 3. Mark the package as "unbundled" in google3. 4. Move all code from server_plugin to analysis_server_plugin; update imports; and delete server_plugin. 5. Remove server_plugin as an "unbundled" package; and remove server_plugin from google3. Bug: #53402 Change-Id: I70197fdf61dd5862c2220d8ed5dd0880a1593ead Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363600 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Alexander Thomas <athom@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

Work towards #53402 None of the classes which were moved are changed in any way. Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Change-Id: If81098971de044e2f69c1039ec23eff07b108af6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/368066 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

srawlins · 2024-05-30T18:54:15Z

I'm not good about referencing this issue in my CLs, as all the work is sort of just preparation and grooming the code. So I'll write down some of the under-the-hood changes I've been making. They are largely to support two areas: lint rule APIs and correction producer (mostly quick fix) APIs:

lint rule APIs:

LinterContext:
- Deprecate resolveNameInScope (replaced with resolveNameInScope2) (334082) and inTestDir (replaced with extension getter) (365300).
- Remove analysisOptions, declaredVariables, canBeConst, canBeConstConstructor, inTestDir (replaced with extension getters) (365521), isEnabled (368524).
- Rename currentUnit to definingUnit (368524).
- Add isInLibDir, libraryElement (368524).
LinterContextImpl: remove strictCasts field (344200).
Mark LintDriver and DartLinter as "only used for linter tools and tests" (334645).
Remove CamelCaseString and SourceLinter (334645).
Mark DartLinter.lintPubspecSource as @visibleForTesting (334645).
LinterOptions: mark enabledLints and analysisOptions final, and remove
resourceProvider (334645).
Move analyzer's top-level function lintFiles, classes ErrorWatchingSink and FileGlobFilter to linter's tool/ directory (334645).
NodeLintRegistry: remove deprecated addOnClause (366404).
Remove NodeLintRuleWithContext (366504), Linter, getVisitor, linterVersion (366840), LinterAnalysis.linterUnit, LinterContextUnit2 (366405).
Simplify LibraryAnalyzer._computeLints (366222).
Add LinterContextUnit.errorReporter (366405).
Add LinterVisitor.afterLibrary (368524).
Move DartLinter out of analyzer package (369562).
Mark Group.builtin and Group.custom as visible-for-testing (369562).
Remove all fields from Group (369782).
Allow each LintRule multiple categories (369861).
Require each LintRule to either override lintCode or lintCodes (372183).
Rename LinterContextUnit -> LintRuleUnitContext, LinterContextImpl -> LinterContextWithResolvedResults, LinterContextParsedImpl -> LinterContextWithParsedResults (374861).
Make LintCode public API (375060).
Rename Category to LintRuleCategory (377269).
Move LintRule category declarations to a messages.yaml file (382780).
Convert the classes AnalysisOptionsFileConfig and PubspecYamlFileConfig each to a single method ().
Privatize: ExpectedDiagnostic fields diagnosticMatcher, offset, length, and messageContains, ExpectedError field codes, ExpectedLint field lintName, LintRuleTest field collectionIncludedPaths, _ContextResolutionTest field sdkRoot (386580).
Privatize writeTestPackageAnalysisOptionsFile and writeTestPackagePubspecYamlFile functions (386580).
Simplify LintConfig and RuleConfig to not have an unnecessary impl class (388960).
Make many functions on _LintConfig like addAsListOrString both static and private (388960).
Make all of RuleConfig's fields final and pass them all as parameters into the constructor (388960).
Simplify FormatterOptions code (389020).
Remove most use cases of LintFilter and move it to the linter package (389403).
Use StringSinks more in linter code, simplifying some tools (390665).
Always propagate exceptions in lint rule tests (391202).
Move LintDriver into the linter package (391321).

correction producer APIs:

_AbstractCorrectionProducer:
- Remove strictCasts (344220), invalidNodes, displayStringForType, mightBeImplicitConstructor, nameOfType, shouldWrapParenthesisBeforeAnd (367363), coveredNode (367761).
- Make sealed (367761)
CorrectionProducer:
- Remove getLinterContext (364964).
- Convert each of assistArguments, fixArguments, multiFixArguments to be List<String>? (364420).
- Remove errorMessage (367363).
- Make configure abstract (367363).
- Add coveringNode (367761).
- Make sealed (367761).
- Remove configure (368760).
- Add context as a named parameter to the constructor (368760).
MultiCorrectionProducer: remove typeProvider, typeSystem (367363).
MultiCorrectionProducer: add context (368760).
ResolvedCorrectionProducer: remove coreTypeBool (367363).
CorrectionUtils:
- Remove patternOfBoolCondition (347781).
- Remove findPossibleLocalVariableConflicts (358641).
- Remove getTypeSource, targetClassElement, and
  targetExecutableElement (358663).
- Remove prepareNewStatementLocation (360080).
- Move prepareNewFieldLocation and
  prepareNewGetterLocation to DartFileEditBuilder, as
  addFieldInsertion and addGetterInsertion (360302).
- Move addMethodInsert and addCaseClauseAtEndInsert to DartEditBuilder (360980).
- Remove getDefaultValueCode (361132).
- Move last constructor APIs to DartFileEditBuilder (362063).
- Remove prepareNewClassMemberLocation (362303).
- Remove addLibraryImports (363402).
- Remove indentLeft, indentRight (363404).
- Remove selectionIncludesNonWhitespaceOutsideNode (363501).
DartFileEditBuilder:
- Add addConstructorInsertion, a replacement for both CorrectionUtils.prepareEnumNewConstructorLocation and
  CorrectionUtils.prepareNewConstructorLocation (361624).
- Rename add___Insertion APIs to insert___ (362001).
- Add insertIntoUnitMember (362183).
- Add a parameter to writeOverride called setSelection which controls whether selection should be set (362183).
CorrectionProducerContext:
- Make private: selectionOffset, selectionLength, utils, sessionHelper, unitResult, applyingBulkFixes, diagnostic, token (364420).
- Remove selectionEnd, unit, file, session, workspace, typeProvider; these can be accessed via
  getters (364420).
- Make final (367761).
- Make non-generic (368760).
Make private AssistProcessor.generators, multiGenerators, .assistContext, .assists (364420).
FixProcessor:
- Make private: FixProcessor.fixContext (364420).
- Add registration of "ignore" producer generators (376126).
- Registered producer generators use LintCodes over Strings (377267).
Remove hasFix top-level function(345347), classes TransformOverride (347641), ExpressionCasePattern (347781), CorrectionUtils_InsertDesc (347780), CancelCorrectionException (348083), Baseprocessor (364360).
Separate FixProcessor and built-in fix producer mappings into two files (345561).
Combine DartFixContext and DartFixContextImpl and change constructor to use all named parameters (358382).
Remove static class Flutter. Most methods are refactored as extension methods. Some unused ones are deleted.
Some are inlined into their call sites (362300).
Remove unused class TransformOverrideSet (340280).
Use an enum to express how widely a CorrectionProducer can be applied (366740).
Remove unused ParsedCorrectionProducer (368760).
Re-introduce ParsedCorrectionProducer, and use in 7 producers (369561).
Make DartFixKindPriority public, use lower-cased values (374742).
BulkFixProcessor:
- Privatize BulkFixProcessor.syntacticLintCodes (377267).
- Privatize four more fields and one method (377622).
- Mark two fields @visibleForTesting (377622).
- Privatize 6 fields and 1 getter on IterativeBulkFixProcessor (377622).
Separate fix generators into their own file (377563).

Plugin server API:

Introduce the PluginServer (382480).
Run PluginServer zoned (384140).
Support overlay changes (384305).
Add the plugin package generator (384681).

Analysis Options

Rename most references, in the analyzer and analysis server, of 'plugins' to be 'legacy plugins' (384964).
Simplify fields in AnalysisOptionsImpl (389040).
Simplify parseConfig function to take a non-nullable parameter (389022).
In CodeStyleOptions, privatize options field (389023) and improve doc comments (390266).
Remove dead code in AnalysisOptionsImpl (390420).
Remove unused LinterOptions.analysisOptions (390563).
Remove unused DriverOptions.strongMode (390666).
Convert the applyOptions extension method into a builder class (390660).
Make the 'strict' modes part of the public API (391020).

I'll update this comment as I make more preparatory changes.

FixProcessor has to be part of the analysis_server_plugin package, so it cannot have any dependencies on the analysis_server package. This removes one. Work towards #53402 Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Change-Id: I935712bf75837ba95438ac9ed5f7ba5d8f941a7a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/376126 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

Work towards #53402 I move them all out of static fields on FixProcessor to be instance fields on a singleton class in a new file, fix_generators.dart. For each one that ended in the word 'Map', I removed that. I also move `_bulkFixableErrorCodes` and `canBulkFix` to BulkFixProcessor, as it is the only caller, and holds onto the data. I also correct some outdated doc comments. I also make `_isFixableError` static. Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Change-Id: I01beccac4969f832941c75eb6d7b49b54a0b085c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/377563 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

These two are needed in the shared package so that plugins can run CorrectionProducers. They go in 'src' because plugin developers do not need to see this code. Work towards #53402 Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Change-Id: Iee5b5dd063d5b0a9b00c58b91a3e50328c8b5fc2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/377860 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

Also move the top-level `computeFixes` convenience function. The `computeFixes` function is the main entrypoint that various code uses to, well, compute all fixes with a FixProcessor and a FixInFileProcessor. In order for plugin code to call `computeFixes`, we need that function and FixInFileProcessor in the analysis_server_plugin package. Work towards #53402 Cq-Include-Trybots: luci.dart.try:flutter-analyze-try,analyzer-win-release-try,pkg-win-release-try Change-Id: Id5f02864762eeefb92055a3534e91b60b76dfeb2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/378220 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

This adds and tests support for adding file overlays, changing them, and removing them. Work towards #53402 Change-Id: I7939f8199639f7e336cd97515c2f7d48b1d777a0 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/384305 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

This generator will be used create shared plugin package entrypoints from plugin configurations. Work towards #53402 Change-Id: If5c6aeb7bc7845311975928fba1cb9c8d273423c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/384681 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com>

rrousselGit · 2024-11-18T22:28:18Z

👋
Is this likely to land within 6months or so?

This seems to be actively worked on ; which is cool! But it also makes me re-evaluate how much effort I should spend working on custom_lint.
If this takes a while to land >= 6month, I'll likely keep working on custom_lint in the meantime (such as supporting newer analyzer versions whenever they land).
But if it's <=6 months, I'd consider stopping support for custom_lint, to use that time on things more valuable in the long term.

srawlins · 2024-11-20T00:35:30Z

Yes, actively working on it, and hope to send out something in the next month or so. Definitely < 6 months 😁 stay tuned.

This change is the final piece in enabling plugins in the new style to be launched from a specification in analysis options. Work towards #53402 * We support both one legacy analyzer plugin (the current max), and a set of new analyzer plugins, which are combined and launched in one shared plugin isolate. * Make PluginLocator.pluginMap private. * Add a parameter to PluginManager.addPluginToContextRoot: isLegacyPlugin. This method is used for both legacy and new plugins, but has slightly different behavior, finding where the plugin files are. Change-Id: I6644aecd4283eea22586ffd051a01b0ec8987fc5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/395360 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>

rrousselGit · 2025-02-18T22:49:43Z

Product excellence

Support writing Assists

I missed the fact that assists were part of the "In the future".

Assists are key IMO. I'd say they are critical.
Assists are one of the main way to improve developer experience. The few assists I wrote for Riverpod are quite the time savers ; and I'd be quite sad to see them go.

srawlins · 2025-02-18T23:13:52Z

I'm very open to bumping the pirority on Assists. They "should" be easy to add, as we already have quick fixes. I'll sync with the team on this for MVP.

srawlins added area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. P2 A bug or feature request we're likely to work on type-enhancement A request for a change that isn't a bug analyzer-plugin labels Aug 31, 2023

srawlins self-assigned this Aug 31, 2023

DanTup mentioned this issue May 2, 2024

"dart analyze" and analysis server sometimes hang for ~30seconds when analysis server plugins are enabled #55621

Closed

srawlins mentioned this issue Sep 30, 2024

Support custom lint rules #57588

Closed

lishaduck mentioned this issue Jan 7, 2025

custom_lint does not work with pub workspaces invertase/dart_custom_lint#298

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Pante mentioned this issue Jan 8, 2025

Remove internal lints forus-labs/forui#344

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5 tasks

riscait mentioned this issue Jan 27, 2025

Migrate from custom_lint to the New Analyzer Plugin System altive/altive_lints#85

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bwilkerson added area-devexp Developer Experience related issues (DevTools, IDEs, Analysis Server, completions, refactoring, etc) and removed area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. labels Feb 21, 2025

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