Konstantin Shcheglov
3d95c84db5
Introduce the internal `analyzer_element_model_tracking` lint to enforce explicit tracking annotations on analyzer element-model members. This codifies how each member contributes to IDs, dependency tracking, and incremental analysis. Rule behavior (applies to classes annotated with `@elementClass`): - Public instance **fields** must be annotated with `@trackedIncludedInId`. - Public instance **getters/methods** (non-abstract, non-void) must have exactly one of: `@trackedDirectly`, `@trackedDirectlyExpensive`, `@trackedDirectlyOpaque`, `@trackedIncludedInId`, or `@trackedIndirectly`. - Flags invalid annotations on ineligible members (constructors, setters, static or private members). - Reports when more than one tracking annotation is present. - Reports when a required annotation is missing. Wire-up: - Add lint codes and names: - `analyzer_element_model_tracking_bad` - `analyzer_element_model_tracking_more_than_one` - `analyzer_element_model_tracking_zero` - Mark these as `noFix` in error-fix status and enable the rule in `analysis_options.yaml`. - Register the rule in the linter. Model updates: - Annotate many members in `element.dart` to reflect their tracking category (e.g. `@trackedIncludedInId` for identity-affecting members; `@trackedDirectlyExpensive` for lazily computed collections). - For opaque surfaces where precise tracking is impractical (e.g. `documentationComment`, `nonSynthetic`, `session`, member lookups, ancestor queries, `visitChildren`), record usage via `globalResultRequirements?.recordOpaqueApiUse(...)`. Why: - Makes dependency/ID semantics explicit and reviewable. - Improves correctness of incremental and cache invalidation behavior. - Establishes a foundation for refining precision over time without regressions. Scope: - Internal only; no public API changes. Change-Id: Id2beaf5ead35b8a361bc1b7688ccb5b5a74afe88 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/446140 Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Samuel Rawlins <srawlins@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
This package provides a library that performs static analysis of Dart code. It is useful for tool integration and embedding.
End-users should use the dart analyze command-line tool to analyze their Dart code.
Integrators that want to add Dart support to their editor should use the Dart Analysis Server. The Analysis Server API Specification is available. If you are adding Dart support to an editor or IDE, please let us know by emailing our list.
Configuring the analyzer
Both dart analyze and Dart Analysis Server can be configured with an
analysis_options.yaml file (using an .analysis_options file is deprecated).
This YAML file can control which files and paths are analyzed,
which lints are applied, and more.
If you are embedding the analyzer library in your project, you are responsible for finding the analysis options file, parsing it, and configuring the analyzer.
The analysis options file should live at the root of your project (for example,
next to your pubspec.yaml). Different embedders of analyzer, such as
dart analyze or Dart Analysis Server, may choose to find the file in various
different ways. Consult their documentation to learn more.
Here is an example file that instructs the analyzer to ignore two files:
analyzer:
exclude:
- test/_data/p4/lib/lib1.dart
- test/_data/p5/p5.dart
- test/_data/bad*.dart
- test/_brokendata/**
Note that you can use globs, as defined by the glob package.
Here is an example file that enables two lint rules:
linter:
rules:
- camel_case_types
- empty_constructor_bodies
Check out all the available Dart lint rules.
You can combine the analyzer section and the linter section into a single
configuration. Here is an example:
analyzer:
exclude:
- test/_data/p4/lib/lib1.dart
linter:
rules:
- camel_case_types
For more information, see the docs for customizing static analysis.
Who uses this library?
Many tools embed this library, such as:
- dart format - a formatter for Dart code
- dart doc - a documentation generator for Dart code
- Dart Analysis Server - a stateful server that supports IDEs and editors
Support
Post issues and feature requests at https://github.com/dart-lang/sdk/issues. These will be triaged according to the analyzer triage priorities.
Questions and discussions are welcome at the Dart Analyzer Discussion Group.
Background
The APIs in this package were originally machine generated by a translator and were based on an earlier Java implementation. Several of the API's still look like their Java predecessors rather than clean Dart APIs.
In addition, there is currently no clean distinction between public and internal APIs. We plan to address this issue but doing so will, unfortunately, require a large number of breaking changes. We will try to minimize the pain this causes for our clients, but some pain is inevitable.
License
See the LICENSE file.