com.facebook.react.bridge.Promise.java Source code

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/*
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

package com.facebook.react.bridge;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

/*
 * Interface that represents a JavaScript Promise which can be passed to the native module as a
 * method parameter.
 *
 * Methods annotated with {@link ReactMethod} that use a {@link Promise} as the last parameter
 * will be marked as "promise" and will return a promise when invoked from JavaScript.
 */
public interface Promise {

    /**
     * Successfully resolve the Promise with an optional value.
     *
     * @param value Object
     */
    void resolve(@Nullable Object value);

    /**
     * Report an error without an exception using a custom code and error message.
     *
     * @param code String
     * @param message String
     */
    void reject(String code, String message);

    /**
     * Report an exception with a custom code.
     *
     * @param code String
     * @param throwable Throwable
     */
    void reject(String code, Throwable throwable);

    /**
     * Report an exception with a custom code and error message.
     *
     * @param code String
     * @param message String
     * @param throwable Throwable
     */
    void reject(String code, String message, Throwable throwable);

    /**
     * Report an exception, with default error code. Useful in catch-all scenarios where it's unclear
     * why the error occurred.
     *
     * @param throwable Throwable
     */
    void reject(Throwable throwable);

    /* ---------------------------
     *  With userInfo WritableMap
     * --------------------------- */

    /**
     * Report an exception, with default error code, with userInfo. Useful in catch-all scenarios
     * where it's unclear why the error occurred.
     *
     * @param throwable Throwable
     * @param userInfo WritableMap
     */
    void reject(Throwable throwable, WritableMap userInfo);

    /**
     * Reject with a code and userInfo WritableMap.
     *
     * @param code String
     * @param userInfo WritableMap
     */
    void reject(String code, @NonNull WritableMap userInfo);

    /**
     * Report an exception with a custom code and userInfo.
     *
     * @param code String
     * @param throwable Throwable
     * @param userInfo WritableMap
     */
    void reject(String code, Throwable throwable, WritableMap userInfo);

    /**
     * Report an error with a custom code, error message and userInfo, an error not caused by an
     * exception.
     *
     * @param code String
     * @param message String
     * @param userInfo WritableMap
     */
    void reject(String code, String message, @NonNull WritableMap userInfo);

    /**
     * Report an exception with a custom code, error message and userInfo.
     *
     * @param code String
     * @param message String
     * @param throwable Throwable
     * @param userInfo WritableMap
     */
    void reject(String code, String message, Throwable throwable, WritableMap userInfo);

    /* ------------
     *  Deprecated
     * ------------ */

    /**
     * Report an error which wasn't caused by an exception.
     *
     * @deprecated Prefer passing a module-specific error code to JS. Using this method will pass the
     *     error code "EUNSPECIFIED".
     */
    @Deprecated
    void reject(String message);
}