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Element.session can be nullable

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This is not convenient, and not nice, but it can be.
We have to accept that it can for now, and plan to make it better.

Bug: https://github.com/dart-lang/sdk/issues/44837
Change-Id: Icbd2d55b6690ed817b38a7768198c41ce36cf002
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182960
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
This commit is contained in:
Konstantin Shcheglov 2021-02-04 22:02:29 +00:00 committed by commit-bot@chromium.org
parent d052156ea4
commit 9cbe1cafe0
3 changed files with 13 additions and 4 deletions
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8
pkg/analyzer/lib/dart/element/element.dart
View file

@ -418,6 +418,9 @@ abstract class CompilationUnitElement implements Element, UriReferencedElement {
/// unit.
List<ClassElement> get mixins;
@override
AnalysisSession get session;
/// Return a list containing all of the top-level variables contained in this
/// compilation unit.
List<TopLevelVariableElement> get topLevelVariables;
@ -655,7 +658,7 @@ abstract class Element implements AnalysisTarget {
int get nameOffset;
/// Return the analysis session in which this element is defined.
AnalysisSession get session;
AnalysisSession? get session;
@override
Source? get source;
@ -1377,6 +1380,9 @@ abstract class LibraryElement implements _ExistingElement {
/// that are either declared in the library, or imported into it.
Scope get scope;
@override
AnalysisSession get session;
/// Return the top-level elements defined in each of the compilation units
/// that are included in this library. This includes both public and private
/// elements, but does not include imports, exports, or synthetic elements.

7
pkg/analyzer/lib/src/dart/element/element.dart
View file

@ -1383,6 +1383,9 @@ class CompilationUnitElementImpl extends UriReferencedElementImpl
_mixins = mixins;
}
@override
AnalysisSession get session => enclosingElement.session;
@override
List<TopLevelVariableElement> get topLevelVariables {
if (_variables != null) return _variables!;
@ -2888,8 +2891,8 @@ abstract class ElementImpl implements Element {
}
@override
AnalysisSession get session {
return enclosingElement!.session;
AnalysisSession? get session {
return enclosingElement?.session;
}
@override

2
pkg/analyzer/lib/src/dart/element/member.dart
View file

@ -561,7 +561,7 @@ abstract class Member implements Element {
int get nameOffset => _declaration.nameOffset;
@override
AnalysisSession get session => _declaration.session;
AnalysisSession? get session => _declaration.session;
@override
Source get source => _declaration.source!;