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48 lines
1.6 KiB
48 lines
1.6 KiB
/*
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* Copyright (C) 2020 The Dagger Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dagger.assisted;
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import static java.lang.annotation.ElementType.TYPE;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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/**
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* Annotates an abstract class or interface used to create an instance of a type via an {@link
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* AssistedInject} constructor.
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*
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* <p>An {@link AssistedFactory}-annotated type must obey the following constraints:
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*
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* <ul>
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* <li>The type must be an abstract class or interface,
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* <li>The type must contain exactly one abstract, non-default method whose
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* <ul>
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* <li>return type must exactly match the type of an assisted injection type, and
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* <li>parameters must match the exact list of {@link Assisted} parameters in the assisted
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* injection type's constructor (and in the same order).
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* </ul>
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* </ul>
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*
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* See {@link AssistedInject}
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*/
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@Documented
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@Retention(RUNTIME)
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@Target(TYPE)
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public @interface AssistedFactory {}
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