Migrate JS error handler to MapBuffer

Summary:
Changelog:
[iOS][Changed] Replace Folly with MapBuffer for passing js error data

Reviewed By: sammy-SC

Differential Revision: D38460203

fbshipit-source-id: 98f6243e31da42cc601727545b331392300cee20

Author: luluwu2032

React/CoreModules/BUCK

@@ -1,5 +1,5 @@
 load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_objc_arc_preprocessor_flags", "get_preprocessor_flags_for_build_mode")
-load("@fbsource//tools/build_defs/oss:rn_defs.bzl", "rn_apple_library", "rn_extra_build_flags")
+load("@fbsource//tools/build_defs/oss:rn_defs.bzl", "react_native_xplat_target", "rn_apple_library", "rn_extra_build_flags")
 load(
     "@fbsource//xplat/configurations/buck/apple/plugins/sad_xplat_hosted_configurations:react_module_registration.bzl",
     "react_module_plugin_providers",
@@ -129,6 +129,9 @@ rn_apple_library(
     ],
     reexport_all_header_dependencies = True,
     visibility = ["PUBLIC"],
+    deps = [
+        react_native_xplat_target("react/renderer/mapbuffer:mapbufferApple"),
+    ],
     exported_deps = [
         "//xplat/js/react-native-github:FBReactNativeSpecApple",
         "//xplat/js/react-native-github:RCTLinkingApple",

React/CoreModules/RCTExceptionsManager.h

@@ -7,6 +7,7 @@
 
 #import <Foundation/Foundation.h>
 #import <React/RCTBridgeModule.h>
+#import <react/renderer/mapbuffer/MapBuffer.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -38,7 +39,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)reportFatalException:(nullable NSString *)message
                        stack:(nullable NSArray<NSDictionary *> *)stack
                  exceptionId:(double)exceptionId;
-- (void)reportJsException:(NSString *)errorMap;
+- (void)reportJsException:(const facebook::react::MapBuffer &)errorMap;
 
 @property (nonatomic, weak) id<RCTExceptionsManagerDelegate> delegate;
 

React/CoreModules/RCTExceptionsManager.mm

@@ -25,6 +25,15 @@ @implementation RCTExceptionsManager
 
 @synthesize moduleRegistry = _moduleRegistry;
 
+const int FILE_KEY_OF_JS_ERROR = 0;
+const int METHOD_NAME_KEY_OF_JS_ERROR = 1;
+const int LINE_NUMBER_KEY_OF_JS_ERROR = 2;
+const int COLUMN_KEY_OF_JS_ERROR = 3;
+const int FRAMES_KEY_OF_JS_ERROR = 4;
+const int MESSAGE_KEY_OF_JS_ERROR = 5;
+const int ID_KEY_OF_JS_ERROR = 6;
+const int IS_FATAL_KEY_OF_JS_ERROR = 7;
+
 RCT_EXPORT_MODULE()
 
 - (instancetype)initWithDelegate:(id<RCTExceptionsManagerDelegate>)delegate
@@ -150,19 +159,25 @@ - (void)reportFatal:(NSString *)message
   }
 }
 
-- (void)reportJsException:(NSString *)errorStr
+- (void)reportJsException:(const facebook::react::MapBuffer &)errorMap
 {
-  NSData *jsonData = [errorStr dataUsingEncoding:NSUTF8StringEncoding];
-  NSError *jsonError;
-  NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData
-                                                       options:NSJSONWritingPrettyPrinted
-                                                         error:&jsonError];
-
-  NSString *message = [dict objectForKey:@"message"];
-  double exceptionId = [[dict objectForKey:@"id"] doubleValue];
-  NSArray *stack = [dict objectForKey:@"stack"];
-  BOOL isFatal = [[dict objectForKey:@"isFatal"] boolValue];
-
+  NSString *message = [NSString stringWithCString:errorMap.getString(MESSAGE_KEY_OF_JS_ERROR).c_str()
+                                         encoding:[NSString defaultCStringEncoding]];
+  int exceptionId = errorMap.getInt(ID_KEY_OF_JS_ERROR);
+  BOOL isFatal = errorMap.getBool(IS_FATAL_KEY_OF_JS_ERROR);
+  std::vector<facebook::react::MapBuffer> frames = errorMap.getMapBufferList(FRAMES_KEY_OF_JS_ERROR);
+  NSMutableArray *stack = [[NSMutableArray alloc] init];
+  for (facebook::react::MapBuffer const &mapBuffer : frames) {
+    NSDictionary *frame = @{
+      @"file" : [NSString stringWithCString:mapBuffer.getString(FILE_KEY_OF_JS_ERROR).c_str()
+                                   encoding:[NSString defaultCStringEncoding]],
+      @"methodName" : [NSString stringWithCString:mapBuffer.getString(METHOD_NAME_KEY_OF_JS_ERROR).c_str()
+                                         encoding:[NSString defaultCStringEncoding]],
+      @"lineNumber" : [NSNumber numberWithInt:mapBuffer.getInt(LINE_NUMBER_KEY_OF_JS_ERROR)],
+      @"column" : [NSNumber numberWithInt:mapBuffer.getInt(COLUMN_KEY_OF_JS_ERROR)],
+    };
+    [stack addObject:frame];
+  }
   if (isFatal) {
     [self reportFatalException:message stack:stack exceptionId:exceptionId];
   } else {