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Fix for type inference from instance creation arguments.
R=brianwilkerson@google.com, paulberry@google.com Change-Id: I0e8386f2a7b3e6d034350a21e474fc1a297c0120 Reviewed-on: https://dart-review.googlesource.com/48762 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
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@ -5233,7 +5233,11 @@ class _UnitResynthesizer extends UnitResynthesizer with UnitResynthesizerMixin {
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DartType buildTypeForClassInfo(
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info, int numTypeArguments, DartType Function(int i) getTypeArgument) {
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ClassElementForLink class_ = info.element;
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if (numTypeArguments == 0) return class_.typeWithDefaultBounds;
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if (numTypeArguments == 0) {
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DartType type = class_.typeWithDefaultBounds;
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_typesWithImplicitArguments[type] = true;
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return type;
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}
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return class_.buildType(getTypeArgument, const []);
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}
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@ -6660,6 +6660,43 @@ D<T> f<T>() {}
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}
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}
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test_infer_instanceCreation_fromArguments() async {
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var library = await checkLibrary('''
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class A {}
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class B extends A {}
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class S<T extends A> {
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S(T _);
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}
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var s = new S(new B());
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''');
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if (isStrongMode) {
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checkElementText(library, '''
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class A {
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}
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class B extends A {
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}
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class S<T extends A> {
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S(T _);
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}
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S<B> s;
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''');
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} else {
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checkElementText(library, '''
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class A {
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}
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class B extends A {
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}
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class S<T extends A> {
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S(T _);
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}
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dynamic s;
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''');
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}
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}
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test_infer_property_set() async {
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var library = await checkLibrary('''
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class A {
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