text: /**
   * Copyright (c) 2015-present, Facebook, Inc.
   * All rights reserved.
   *
   * This source code is licensed under the BSD-style license found in the
   * LICENSE file in the root directory of this source tree. An additional grant
   * of patent rights can be found in the PATENTS file in the same directory.
   */
  
  #import <objc/runtime.h>
  
  #import <JavaScriptCore/JavaScriptCore.h>
  
  #import "HippyBridgeModule.h"
  #import "HippyInvalidating.h"
  #include "engine-impl.h"
  
  typedef void (^HippyJavaScriptCompleteBlock)(NSError *error);
  typedef void (^HippyJavaScriptCallback)(id result, NSError *error);
  
  /**
   * Abstracts away a JavaScript execution context - we may be running code in a
   * web view (for debugging purposes), or may be running code in a `JSContext`.
   */
  @protocol HippyJavaScriptExecutor <HippyInvalidating, HippyBridgeModule>
  
  /**
   * Used to set up the executor after the bridge has been fully initialized.
   * Do any expensive setup in this method instead of `-init`.
   */
  - (void)setUp;
  
  /**
   * Whether the executor has been invalidated
   */
  @property (nonatomic, readonly, getter=isValid) BOOL valid;
  
  /*
   *hippy-core js engine
   */
  @property (nonatomic, assign) std::weak_ptr<Engine> pEngine;
  @property (nonatomic, assign) std::weak_ptr<Environment> pEnv;
  @property (nonatomic, assign) hippy::napi::napi_context napi_ctx;
  @property (readonly) JSGlobalContextRef JSGlobalContextRef;
  @property (nonatomic, copy) NSString *businessName;
  /**
   * Executes BatchedBridge.flushedQueue on JS thread and calls the given callback
   * with JSValue, containing the next queue, and JSContext.
   */
  - (void)flushedQueue:(HippyJavaScriptCallback)onComplete;
  
  /**
   * Executes BatchedBridge.callFunctionReturnFlushedQueue with the module name,
   * method name and optional additional arguments on the JS thread and calls the
   * given callback with JSValue, containing the next queue, and JSContext.
   */
  - (void)callFunctionOnModule:(NSString *)module
                        method:(NSString *)method
                     arguments:(NSArray *)args
                      callback:(HippyJavaScriptCallback)onComplete;
  
  /**
   * Executes BatchedBridge.invokeCallbackAndReturnFlushedQueue with the cbID,
   * and optional additional arguments on the JS thread and calls the
   * given callback with JSValue, containing the next queue, and JSContext.
   */
  - (void)invokeCallbackID:(NSNumber *)cbID
                 arguments:(NSArray *)args
                  callback:(HippyJavaScriptCallback)onComplete;
  
  /**
   * Runs an application script, and notifies of the script load being complete via `onComplete`.
   */
  - (void)executeApplicationScript:(NSData *)script
                         sourceURL:(NSURL *)sourceURL
                        onComplete:(HippyJavaScriptCompleteBlock)onComplete;
  
  - (void)injectJSONText:(NSString *)script
     asGlobalObjectNamed:(NSString *)objectName
                callback:(HippyJavaScriptCompleteBlock)onComplete;
  
  /**
   * Enqueue a block to run in the executors JS thread. Fallback to `dispatch_async`
   * on the main queue if the executor doesn't own a thread.
   */
  - (void)executeBlockOnJavaScriptQueue:(dispatch_block_t)block;
  
  /**
   * Special case for Timers + ContextExecutor - instead of the default
   *   if jsthread then call else dispatch call on jsthread
   * ensure the call is made async on the jsthread
   */
  - (void)executeAsyncBlockOnJavaScriptQueue:(dispatch_block_t)block;
  
  @end
  