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a68c731aca
Summary: public Fixes #4309 This adds the possibility to reject `Promise` instances with `Throwable`s in java, instead of strings. For now, it only reads the message, but we can add more features on top of this, e.g. forwarding the error stack. Reviewed By: andreicoman11 Differential Revision: D2708192 fb-gh-sync-id: ca5ff584eca29370a9f9b780fa9825b17863a7e9
51 lines
1.4 KiB
Java
51 lines
1.4 KiB
Java
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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/**
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* Implementation of two javascript functions that can be used to resolve or reject a js promise.
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*/
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package com.facebook.react.bridge;
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import javax.annotation.Nullable;
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public class PromiseImpl implements Promise {
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private @Nullable Callback mResolve;
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private @Nullable Callback mReject;
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public PromiseImpl(@Nullable Callback resolve, @Nullable Callback reject) {
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mResolve = resolve;
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mReject = reject;
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}
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@Override
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public void resolve(Object value) {
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if (mResolve != null) {
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mResolve.invoke(value);
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}
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}
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@Override
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public void reject(Throwable reason) {
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reject(reason.getMessage());
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}
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@Override
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public void reject(String reason) {
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if (mReject != null) {
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// The JavaScript side expects a map with at least the error message.
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// It is possible to expose all kind of information. It will be available on the JS
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// error instance.
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// TODO(8850038): add more useful information, e.g. the native stack trace.
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WritableNativeMap errorInfo = new WritableNativeMap();
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errorInfo.putString("message", reason);
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mReject.invoke(errorInfo);
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}
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}
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}
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