This adds the initial implementation of exhaustiveness checking in
the analyzer and CFE. The checking is currently only performed in
switch statements and only handle a subset of the patterns.
Change-Id: Ia0050c2c80fbefe3e22615599136f9d919ebe4ef
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/279173
Reviewed-by: Jonas Termansen <sortie@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
This CL adds an interactive command line tool to analyze
heapsnapshots generated by the Dart VM.
The tool works by operating on sets of objects. It supports operations
like users, transitive closure, union, ...
An example usage that loads snapshot, finds all live objects, finds
the empty lists in them and prints retainers of the empty lists:
```
% dart bin/explore.dart
(hsa) load foo.heapsnapshot
(hsa) all = closure roots
(hsa) stat all
size count class
-------- -------- --------
43861 kb 8371 _Uint8List dart:typed_data
...
-------- -------- --------
108904 kb 400745
(hsa) empty-lists = dfilter (filter all _List) ==0
(hsa) empty-growable-lists = filter (users empty-lists) _GrowableList
(hsa) retain empty-growable-lists
There are 5632 retaining paths of
_GrowableList (dart:core)
⮑ ・UnlinkedLibraryImportDirective.configurations (package:analyzer/src/dart/analysis/unlinked_data.dart)
⮑ ﹢_List (dart:core)
⮑ ・...
```
For now the tool lives only in dart-lang/sdk.
TEST=pkg/heapsnapshot/test/*_test.dart
Change-Id: I671c2e3ca770e1a5aa3e590e850a5694070b4c3a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/261100
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
This reverts commit 0715df3d00.
Reason for revert: Could we please revert this temporarily? This breaks copies into G3 (b/243151015). Ivan will be back on Monday and hopefully we will fix it.
Original change's description:
> [deps] rev crypto, file, http, test, web_socket_channel, and webdev
>
> Change-Id: Icc92e4dce84183bac747375b644922845fe908a9
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/255767
> Reviewed-by: Nate Bosch <nbosch@google.com>
> Commit-Queue: Devon Carew <devoncarew@google.com>
TBR=devoncarew@google.com,nbosch@google.com
Change-Id: I6b14d00ce3227995f8e285a559d8ba9968452961
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/255860
Reviewed-by: Devon Carew <devoncarew@google.com>
Reviewed-by: Ilya Yanok <yanok@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>
This is a reland of commit 072603d40a
Original change's description:
> Sync packages from shelf mono repo
>
> Drop the DEPS entries for the repositories which will be archived. Each
> of the packages has been merged into the `shelf` repository.
>
> Add the `shelf` repository to the specially handled directories with
> nested packages in `generate_package_config`.
>
> Update path dependencies in pubspecs to the new location.
>
> R=devoncarew@google.com
>
> Change-Id: Iefca4fdb2abb6bafa273b9b6b1b4f25d6c91b005
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/243929
> Reviewed-by: Alexander Thomas <athom@google.com>
> Reviewed-by: Devon Carew <devoncarew@google.com>
> Commit-Queue: Nate Bosch <nbosch@google.com>
> Auto-Submit: Nate Bosch <nbosch@google.com>
Change-Id: I064d9bc87263e02357021c1def2b656afe45cf22
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244725
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>
Auto-Submit: Nate Bosch <nbosch@google.com>
This reverts commit 243ac04dbf.
Reason for revert: Breaks roll to flutter engine still.
Original change's description:
> Sync packages from shelf mono repo
>
> Keep the DEPS entries and directories for the old locations for these
> packages, but ignore them in `generate_package_config`. Removing the
> hashes and directories would invalidate the DEPS file in the flutter
> engine repository.
>
> Add the `shelf` repository to the specially handled directories with
> nested packages in `generate_package_config`.
>
> Update path dependencies in pubspecs to the new location.
>
> Reland of https://dart-review.googlesource.com/c/sdk/+/243929
> without the removal of the old directory locations.
>
> R=devoncarew@google.com
>
> Change-Id: I3d3b3eb0722f3eba518a6a1034ed9c24f83c70f0
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244300
> Reviewed-by: Devon Carew <devoncarew@google.com>
> Commit-Queue: Nate Bosch <nbosch@google.com>
TBR=devoncarew@google.com,nbosch@google.com
Change-Id: Ied6d9aa685208eddea6d82d04ca8876937651051
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244302
Reviewed-by: Nate Bosch <nbosch@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>
Reviewed-by: Devon Carew <devoncarew@google.com>
Keep the DEPS entries and directories for the old locations for these
packages, but ignore them in `generate_package_config`. Removing the
hashes and directories would invalidate the DEPS file in the flutter
engine repository.
Add the `shelf` repository to the specially handled directories with
nested packages in `generate_package_config`.
Update path dependencies in pubspecs to the new location.
Reland of https://dart-review.googlesource.com/c/sdk/+/243929
without the removal of the old directory locations.
R=devoncarew@google.com
Change-Id: I3d3b3eb0722f3eba518a6a1034ed9c24f83c70f0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244300
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>
This reverts commit 072603d40a.
Reason for revert: Causing issues with rolling into flutter engine.
Original change's description:
> Sync packages from shelf mono repo
>
> Drop the DEPS entries for the repositories which will be archived. Each
> of the packages has been merged into the `shelf` repository.
>
> Add the `shelf` repository to the specially handled directories with
> nested packages in `generate_package_config`.
>
> Update path dependencies in pubspecs to the new location.
>
> R=devoncarew@google.com
>
> Change-Id: Iefca4fdb2abb6bafa273b9b6b1b4f25d6c91b005
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/243929
> Reviewed-by: Alexander Thomas <athom@google.com>
> Reviewed-by: Devon Carew <devoncarew@google.com>
> Commit-Queue: Nate Bosch <nbosch@google.com>
> Auto-Submit: Nate Bosch <nbosch@google.com>
TBR=devoncarew@google.com,athom@google.com,nbosch@google.com
Change-Id: Ic610d47a3294a7dac9503e8a7b160173e0009056
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244140
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>
Reviewed-by: Nate Bosch <nbosch@google.com>
Drop the DEPS entries for the repositories which will be archived. Each
of the packages has been merged into the `shelf` repository.
Add the `shelf` repository to the specially handled directories with
nested packages in `generate_package_config`.
Update path dependencies in pubspecs to the new location.
R=devoncarew@google.com
Change-Id: Iefca4fdb2abb6bafa273b9b6b1b4f25d6c91b005
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/243929
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>
Auto-Submit: Nate Bosch <nbosch@google.com>
This reverts commit 92868580b4.
Reason for revert: I'm seeing failures in golem:
ninja: error: '../../third_party/dart/.dart_tool/package_config.json', needed by 'vm_outline_strong.dill', missing and no known rule to make it
Original change's description:
> Auto-generate the package_config.json file on gclient sync.
>
> Change-Id: Ibb5e548c0738e7dd0061433cf054af8336a0683b
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/234320
> Reviewed-by: Alexander Thomas <athom@google.com>
> Reviewed-by: Lasse Nielsen <lrn@google.com>
> Commit-Queue: Devon Carew <devoncarew@google.com>
TBR=lrn@google.com,devoncarew@google.com,athom@google.com
Change-Id: Ic2b7ae3feedfa064ddbbdb0b36f0e3db088bf177
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/234802
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>
pkg/dart2js_info will soon contain a checked-in version of dart2js_info
that will eventually replace third_party/pkg/dart2js_info. Until that
happens, pkg/dart2js_info should be ignored.
Change-Id: I337d69b6ee58b1ec0f436a199c81828dfd391ec8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/209900
Auto-Submit: Alexander Thomas <athom@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>
Commit-Queue: William Hesse <whesse@google.com>
Reviewed-by: William Hesse <whesse@google.com>
contents don't match
Should reduce the frequency of trivial merge conflicts due to differing
times of the "generated" property.
Change-Id: I1f481d48be0aa21c923c63aedb7d9888d8618bcc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/207503
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
This reverts commit a527411e51.
Reason for revert: depends on package 'devtools_shared' that is not yet migrated.
Original change's description:
> [ package:dds ] Add null safety support
>
> Fixes https://github.com/dart-lang/sdk/issues/45756
>
> TEST=service + DDS tests
>
> Change-Id: I6dd14d7f9fdee479a830c3b053dc3b00aa635202
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/199800
> Commit-Queue: Ben Konyi <bkonyi@google.com>
> Reviewed-by: Devon Carew <devoncarew@google.com>
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: Icdaef3ac55d7ef302acd3f9c2538a41e52e4253a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/200180
Reviewed-by: David Morgan <davidmorgan@google.com>
Commit-Queue: David Morgan <davidmorgan@google.com>
This reverts commit ef0e4ea107.
Reason for revert: Flutter HHH and golem builds are red. Rolls to Flutter are failing.
TEST=N/A
Original change's description:
> [ VM / DDS / CLI ] Add DevTools support to the standalone VM
>
> Example output on stdout when DevTools is enabled:
>
> Observatory listening on http://127.0.0.1:8181/CzkZzZaONW4=/
> The Dart DevTools debugger and profiler is available at: http://127.0.0.1:8181/devtools/#/?uri=ws%3A%2F%2F127.0.0.1%3A8181%2FCzkZzZaONW4%3D%2Fws
> hello world!
>
> vm-service: isolate(1674461414267555) 'main' has no debugger attached and is paused at exit. Connect to Observatory at http://127.0.0.1:8181/CzkZzZaONW4=/ to debug.
>
> TEST=pkg/dartdev/test/commands/run_test.dart
>
> Change-Id: Icd1afda87ad4a46f228125d53094d10adf8056ec
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/188361
> Commit-Queue: Ben Konyi <bkonyi@google.com>
> Reviewed-by: Siva Annamalai <asiva@google.com>
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I50e8dc4e592e13b44c2fb980b2029d5c5cc3ad2a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/198381
Reviewed-by: Ben Konyi <bkonyi@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
Avoids spurious diffs in git when generating with the tool compared to
editing the file in an editor which may correct the missing newline.
Change-Id: If73928fef0682c32d728bae666ccaea4c2749890
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/185497
Auto-Submit: Nate Bosch <nbosch@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>
Commit-Queue: Leaf Petersen <leafp@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
TEST=Presubmit tests and local builds
Change-Id: I1b15d60eced0cf3f422548eda75706609f6640cb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182624
Commit-Queue: Alexander Thomas <athom@google.com>
Auto-Submit: Alexander Thomas <athom@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
This CL implements the core flow analysis infrastructure for tracking
reasons why an expression was not promoted. It supports the following
reasons:
- Expression was a property access
- Expression has been written to since it was promoted
I expect to add support for other non-promotion reasons in the future,
for example:
- `this` cannot be promoted
- Expression has been write captured
- Expression was a reference to a static field or top level variable
These non-promotion reasons are plumbed through to the CFE and
analyzer for the purpose of making errors easier for the user to
understand. For example, given the following code:
class C {
int? i;
f() {
if (i == null) return;
print(i.isEven);
}
}
The front end now prints:
../../tmp/test.dart:5:13: Error: Property 'isEven' cannot be accessed on 'int?' because it is potentially null.
Try accessing using ?. instead.
print(i.isEven);
^^^^^^
Context: 'i' refers to a property so it could not be promoted.
Much work still needs to be done to round out this feature, for example:
- Currently the analyzer only shows the new "why not promoted"
messages when the "--verbose" flag is specified; this means the
feature is unlikely to be noticed by users.
- Currently the analyzer doesn't show a "why not promoted" message
when the non-promotion reason is that the expression is a property
access.
- We need one or more web pages explaining non-promotion reasons in
more detail so that the error messages can contain pointers to them.
- The analyzer and front end currently only show non-promotion reasons
for expressions of the form `x.y` where `x` fails to be promoted to
non-nullable. There are many other scenarios that should be
handled.
Change-Id: I0a12df74d0fc6274dfb3cb555abea81a75884231
Bug: https://github.com/dart-lang/sdk/issues/38773
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/181741
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Also, fix the one package that didn't have one, and regenerate the
config.
Change-Id: Id7f210e9a3f73b2070e52df6ae9d4b1c4d4aeae3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/172081
Commit-Queue: Leaf Petersen <leafp@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
This is the first checked-in SDK with null-safety enabled by default.
Change-Id: I8f6fcdfd8856483f4737eb200ed4623a244cb0cd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/170085
Reviewed-by: Leaf Petersen <leafp@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>
Change naming value classes -> value class
Change-Id: Ifab5e0be8b816192b5716fd3433afb721bd9394c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/156881
Commit-Queue: Javier López-Contreras <jlcontreras@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Follow-up to 84ca34bf8b
Change-Id: I87d2bf0a77dc70f15a378a149dc95be6f33ee3c9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147803
Commit-Queue: Kevin Moore <kevmoo@google.com>
Commit-Queue: Karl Klose <karlklose@google.com>
Reviewed-by: Karl Klose <karlklose@google.com>
