607b370933
A desired feature for flow analysis of patterns is that the matched
value type of one subpattern may depend on promotions from previous
patterns. For example, we want this to work:
int? x = ...;
if (x case null || < 0) ...;
This means that although the type of the scrutinee is `int?`, after
the subpattern `null` has been processed, type promotion should
promote the matched value type to `int`, so that the subpattern `< 0`
doesn't report an error.
This requires changing the API of the shared patterns analysis logic,
so that the client is no longer responsible for passing around the
matched value type. Instead, flow analysis keeps track of it and
provides it to the client when requested.
In follow-up CLs I'll add the necessary logic to flow analysis to
actually promote the matched value type in situations like the example
above.
Change-Id: I6ce66962af32f9bd93bfe4082ba256de627d3cc6
Bug: https://github.com/dart-lang/sdk/issues/50419
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/274942
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
|
||
|---|---|---|
| .. | ||
| _fe_analyzer_shared | ||
| _js_interop_checks | ||
| analysis_server | ||
| analysis_server_client | ||
| analyzer | ||
| analyzer_cli | ||
| analyzer_plugin | ||
| analyzer_utilities | ||
| async_helper | ||
| build_integration | ||
| compiler | ||
| dart2js_info | ||
| dart2js_runtime_metrics | ||
| dart2js_tools | ||
| dart2native | ||
| dart2wasm | ||
| dart_internal | ||
| dartdev | ||
| dds | ||
| dds_service_extensions | ||
| dev_compiler | ||
| expect | ||
| front_end | ||
| frontend_server | ||
| js | ||
| js_ast | ||
| js_runtime | ||
| js_shared | ||
| kernel | ||
| language_versioning_2_7_test | ||
| meta | ||
| modular_test | ||
| native_stack_traces | ||
| nnbd_migration | ||
| scrape | ||
| smith | ||
| sourcemap_testing | ||
| status_file | ||
| telemetry | ||
| test_runner | ||
| testing | ||
| vm | ||
| vm_service | ||
| vm_snapshot_analysis | ||
| wasm_builder | ||
| .gitignore | ||
| BUILD.gn | ||
| OWNERS | ||
| pkg.status | ||
| README.md | ||
Package validation
The packages in pkg/ are automatically validated on the LUCI CI bots. The
validation is largely done by the tools/package_deps package; it can be tested
locally via:
dart tools/package_deps/bin/package_deps.dart
Packages which are published
There are several packages developed in pkg/ which are published to pub.
Validation of these packages is particularly important because the pub tools are
not used for these packages during development; we get our dependency versions
from the DEPS file. Its very easy for the dependencies specified in a package's
pubspec file to get out of date wrt the packages and versions actually used.
In order to better ensure we're publishing correct packages, we validate some properties of the pubspec files on our CI system. These validations include:
- that the dependencies listed in the pubspec are used in the package
- that all the packages used by the source are listed in the pubspec
- that we don't use relative path deps to pkg/ or third_party/ packages
Packages which are not published
For packages in pkg/ which we do not intend to be published, we put the following comment in the pubspec.yaml file:
# This package is not intended for consumption on pub.dev. DO NOT publish.
publish_to: none
These pubspecs are still validated by the package validation tool. The contents are more informational as the pubspecs for these packages are not consumed by the pub tool or ecosystem.
We validate:
- that the dependencies listed in the pubspec are used in the package
- that all the packages used by the source are listed in the pubspec
- that a reference to a pkg/ package is done via a relative path dependency