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remove yield from inherited model (#44233)

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Jonah Williams 2019-11-06 10:38:56 -08:00 committed by GitHub
parent 41e9ab7d58
commit 2110dfe0f5
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1 changed files with 5 additions and 4 deletions
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9
packages/flutter/lib/src/widgets/inherited_model.dart
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@ -119,12 +119,12 @@ abstract class InheritedModel<T> extends InheritedWidget {
// The [result] will be a list of all of context's type T ancestors concluding
// with the one that supports the specified model [aspect].
static Iterable<InheritedElement> _findModels<T extends InheritedModel<Object>>(BuildContext context, Object aspect) sync* {
static void _findModels<T extends InheritedModel<Object>>(BuildContext context, Object aspect, List<InheritedElement> results) {
final InheritedElement model = context.ancestorInheritedElementForWidgetOfExactType(T);
if (model == null)
return;
yield model;
results.add(model);
assert(model.widget is T);
final T modelWidget = model.widget;
@ -139,7 +139,7 @@ abstract class InheritedModel<T> extends InheritedWidget {
if (modelParent == null)
return;
yield* _findModels<T>(modelParent, aspect);
_findModels<T>(modelParent, aspect, results);
}
/// Makes [context] dependent on the specified [aspect] of an [InheritedModel]
@ -163,7 +163,8 @@ abstract class InheritedModel<T> extends InheritedWidget {
// Create a dependency on all of the type T ancestor models up until
// a model is found for which isSupportedAspect(aspect) is true.
final List<InheritedElement> models = _findModels<T>(context, aspect).toList();
final List<InheritedElement> models = <InheritedElement>[];
_findModels<T>(context, aspect, models);
if (models.isEmpty) {
return null;
}