mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andres Suarez
3b31e69e28
Summary: Changelog: [General] [Fixed] - License header cleanup Reviewed By: yungsters Differential Revision: D17952694 fbshipit-source-id: 17c87de7ebb271fa2ac8d00af72a4d1addef8bd0
39 lines
1.6 KiB
Java
39 lines
1.6 KiB
Java
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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package com.facebook.react.bridge;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Retention;
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/**
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* Annotation which is used to mark methods that are exposed to React Native.
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*
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* <p>This applies to derived classes of {@link BaseJavaModule}, which will generate a list of
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* exported methods by searching for those which are annotated with this annotation and adding a JS
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* callback for each.
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*/
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@Retention(RUNTIME)
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public @interface ReactMethod {
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/**
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* Whether the method can be called from JS synchronously **on the JS thread**, possibly returning
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* a result.
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*
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* <p>WARNING: in the vast majority of cases, you should leave this to false which allows your
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* native module methods to be called asynchronously: calling methods synchronously can have
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* strong performance penalties and introduce threading-related bugs to your native modules.
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*
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* <p>In order to support remote debugging, both the method args and return type must be
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* serializable to JSON: this means that we only support the same args as {@link ReactMethod}, and
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* the hook can only be void or return JSON values (e.g. bool, number, String, {@link
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* WritableMap}, or {@link WritableArray}). Calling these methods when running under the websocket
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* executor is currently not supported.
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*/
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boolean isBlockingSynchronousMethod() default false;
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}
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