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Paul Berry 615f40bc1d Ensure that null is not used as a context in more places.
This CL changes the handling of writeContext (for complex
assignments), returnOrYieldContext (for closures), expectedType (for
ensureAssignable), and receiverType (for findInterfaceMember) so that
they no longer use `null` to represent a context; they use UnknownType
or DynamicType as appropriate.

It also changes the handling of expectedType (for ensureAssignable) so
that it does not require the type to be known.  That makes this CL
simpler and paves the way for fixing #31792.

Change-Id: Ib1be06182f9a9e9f77a9eb81f5daf2364de0f3a7
Reviewed-on: https://dart-review.googlesource.com/44800
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
2018-03-07 09:30:33 +00:00
build [infra] Roll toolchain. 2018-03-01 20:09:29 +00:00
client Remove old annotated_steps buildbot scripts and dispatcher 2017-05-23 16:17:02 +02:00
docs Add feature specification draft for Dart 2.0 subtyping 2018-03-06 00:02:38 +00:00
pkg Ensure that null is not used as a context in more places. 2018-03-07 09:30:33 +00:00
runtime [VM] Guard against duplicate entries in the static [Redirection::list_] 2018-03-06 16:42:21 +00:00
samples Make strong mode the default under --preview-dart-2. 2018-02-27 22:16:07 +00:00
samples-dev New methods on Iterable, List, Set, Queue, Map. 2018-02-07 06:12:53 +00:00
sdk Deprecated old upper-case constants. 2018-03-06 14:17:01 +00:00
tests Ensure that null is not used as a context in more places. 2018-03-07 09:30:33 +00:00
third_party DEPS in package:http_io 2018-01-26 18:49:59 +00:00
tools Add preview_dart_2 to supported set of status file variables 2018-03-06 14:46:44 +00:00
utils Add rules to build dart2js platform in strong mode 2018-03-02 22:19:19 +00:00
.clang-format VM: Re-format to use at most one newline between functions 2017-07-13 08:08:37 -07:00
.gitattributes Migrate the lingering language_strong tests over to language_2. 2017-10-27 23:44:08 +00:00
.gitignore Git ignore vscode project files. 2017-03-23 15:26:06 -07:00
.gn Starting work on full GN build 2016-09-23 07:47:36 -07:00
.mailmap Add .mailmap file. 2015-05-18 19:33:16 +02:00
.packages Remove typed_mock 2018-02-21 22:22:32 +00:00
AUTHORS Add Cristian Almstrand to AUTHORS 2015-07-16 09:51:56 -07:00
BUILD.gn [VM] Exclude runtime/bin:precompiler_entry_points_json from being generated for ia32/dbc 2018-02-27 10:57:47 +00:00
CHANGELOG.md Bring in the latest pub 2018-02-27 23:49:46 +00:00
codereview.settings Update codereview.settings to Gerrit (dart-review.googlesource.com) 2017-09-04 12:52:09 +00:00
DEPS *.status files and DEPS updated to include latest fixes for co19 tests 2018-03-06 12:24:43 +00:00
LICENSE Remove the Dromaeo and TodoMVC samples. 2016-01-11 13:09:26 -08:00
PATENTS Move LICENSE, AUTHORS, PATENTS into the dart directory. 2014-02-10 06:48:47 +00:00
PRESUBMIT.py Move new tests from tests/isolate to tests/lib_2/isolate. 2018-02-22 10:03:23 +00:00
README.dart-sdk remove docgen from the sdk 2015-09-18 13:18:10 -07:00
README.md [gardening] Whitespace change to trigger bots. 2017-04-28 10:08:58 -07:00
WATCHLISTS Creates a watchlist for sdk/lib/_http and adds me to it 2018-01-02 18:39:53 +00:00

Dart

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