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[SE-0306] Disable actor inheritance.

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Actor inheritance was removed in the second revision of SE-0306. Remove
the ability to inherit actors.

Note that this doesn't fully eliminate all vestigates of inheritance
from actors. There are simplifications that need to be performed
still, e.g., there's no need to distinguish
designated/convenience/required initializers. That will follow.
This commit is contained in:
Doug Gregor
2021-04-23 15:08:57 -07:00
parent 7cc19b5807
commit b88e678694
14 changed files with 22 additions and 203 deletions
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7
test/decl/class/actor/basic.swift
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@@ -4,16 +4,17 @@
actor MyActor { }
class MyActorSubclass1: MyActor { }
class MyActorSubclass1: MyActor { } // expected-error{{actor types do not support inheritance}}
// expected-error@-1{{non-final class 'MyActorSubclass1' cannot conform to `Sendable`; use `UnsafeSendable`}}
actor MyActorSubclass2: MyActor { }
actor MyActorSubclass2: MyActor { } // expected-error{{actor types do not support inheritance}}
// expected-warning@+1{{'actor class' has been renamed to 'actor'}}{{7-13=}}
actor class MyActorClass { }
class NonActor { }
actor NonActorSubclass : NonActor { } // expected-error{{actor cannot inherit from non-actor class 'NonActor'}}
actor NonActorSubclass : NonActor { } // expected-error{{actor types do not support inheritance}}
// expected-warning@+1{{'actor class' has been renamed to 'actor'}}{{14-20=}}
public actor class BobHope {}