From a74649d285c0868f5046a3ef9b96dfe7699e67b2 Mon Sep 17 00:00:00 2001
From: Ramanpreet Nara <ramanpreet@meta.com>
Date: Wed, 2 Apr 2025 16:45:18 -0700
Subject: [PATCH] Convert RCTUtils into objc++

Summary:
I'll need to use feature flags in this file. And those are only accessible from c++.

Changelog: [Internal]

Reviewed By: lyahdav

Differential Revision: D72326982

fbshipit-source-id: 4c9dfd0e5baa69d979b12914f289d58be6e123a8
---
 .../React/Base/{RCTUtils.m => RCTUtils.mm}     | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)
 rename packages/react-native/React/Base/{RCTUtils.m => RCTUtils.mm} (98%)

diff --git a/packages/react-native/React/Base/RCTUtils.m b/packages/react-native/React/Base/RCTUtils.mm
similarity index 98%
rename from packages/react-native/React/Base/RCTUtils.m
rename to packages/react-native/React/Base/RCTUtils.mm
index 1e496625889..d31a211f935 100644
--- a/packages/react-native/React/Base/RCTUtils.m
+++ b/packages/react-native/React/Base/RCTUtils.mm
@@ -112,7 +112,7 @@ NSString *__nullable RCTJSONStringify(id __nullable jsonObject, NSError **error)
   }
 }
 
-static id __nullable _RCTJSONParse(NSString *__nullable jsonString, BOOL mutable, NSError **error)
+static id __nullable _RCTJSONParse(NSString *__nullable jsonString, BOOL isMutable, NSError **error)
 {
   static SEL JSONKitSelector = NULL;
   static SEL JSONKitMutableSelector = NULL;
@@ -133,7 +133,7 @@ static id __nullable _RCTJSONParse(NSString *__nullable jsonString, BOOL mutable
         unichar c = [jsonString characterAtIndex:i];
         if (strchr("{[", c)) {
           static const int options = (1 << 2); // loose unicode
-          SEL selector = mutable ? JSONKitMutableSelector : JSONKitSelector;
+          SEL selector = isMutable ? JSONKitMutableSelector : JSONKitSelector;
           return ((id(*)(id, SEL, int, NSError **))objc_msgSend)(jsonString, selector, options, error);
         }
         if (!strchr(" \r\n\t", c)) {
@@ -162,7 +162,7 @@ static id __nullable _RCTJSONParse(NSString *__nullable jsonString, BOOL mutable
       }
     }
     NSJSONReadingOptions options = NSJSONReadingAllowFragments;
-    if (mutable) {
+    if (isMutable) {
       options |= NSJSONReadingMutableContainers;
     }
     return [NSJSONSerialization JSONObjectWithData:jsonData options:options error:error];
@@ -674,9 +674,15 @@ NSData *__nullable RCTGzipData(NSData *__nullable input, float level)
   }
 
   void *libz = dlopen("/usr/lib/libz.dylib", RTLD_LAZY);
-  int (*deflateInit2_)(z_streamp, int, int, int, int, int, const char *, int) = dlsym(libz, "deflateInit2_");
-  int (*deflate)(z_streamp, int) = dlsym(libz, "deflate");
-  int (*deflateEnd)(z_streamp) = dlsym(libz, "deflateEnd");
+
+  typedef int (*DeflateInit2_)(z_streamp, int, int, int, int, int, const char *, int);
+  DeflateInit2_ deflateInit2_ = (DeflateInit2_)dlsym(libz, "deflateInit2_");
+
+  typedef int (*Deflate)(z_streamp, int);
+  Deflate deflate = (Deflate)dlsym(libz, "deflate");
+
+  typedef int (*DeflateEnd)(z_streamp);
+  DeflateEnd deflateEnd = (DeflateEnd)dlsym(libz, "deflateEnd");
 
   z_stream stream;
   stream.zalloc = Z_NULL;