Expose RealmJS API as C functions

We're still using Objective-C to delete test files, so we can't rename the implementation file quite yet.

ReactNative/RealmReact.mm

@@ -134,7 +134,7 @@ JSGlobalContextRef RealmReactGetJSGlobalContextForExecutor(id executor, bool cre
 
     [executor executeBlockOnJavaScriptQueue:^{
         JSGlobalContextRef ctx = RealmReactGetJSGlobalContextForExecutor(executor, true);
-        [RealmJS initializeContext:ctx];
+        RJSInitializeInContext(ctx);
     }];
 }
 

examples/cordova/platforms/ios/RealmExample/Classes/AppDelegate.m

@@ -90,7 +90,7 @@
     [self.window makeKeyAndVisible];
 
     JSContext *ctx = [self.viewController.webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
-    [RealmJS initializeContext:ctx.JSGlobalContextRef];
+    RJSInitializeInContext(ctx.JSGlobalContextRef);
 
     return YES;
 }

src/RealmJS.h

@@ -16,13 +16,15 @@
 //
 ////////////////////////////////////////////////////////////////////////////
 
-#import <Foundation/Foundation.h>
 #import <JavaScriptCore/JavaScriptCore.h>
 
-@interface RealmJS : NSObject
+#ifdef __cplusplus
+extern "C" {
+#endif
 
-// add realm apis to the given js context
-+ (void)initializeContext:(JSContextRef)ctx;
-+ (void)clearTestState;
+void RJSInitializeInContext(JSContextRef ctx);
+void RJSClearTestState(void);
 
-@end
+#ifdef __cplusplus
+}
+#endif

src/RealmJS.mm

@@ -57,13 +57,11 @@ NSString *RealmFileDirectory() {
 }
 
 static JSValueRef ClearTestState(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-    [RealmJS clearTestState];
+    RJSClearTestState();
     return NULL;
 }
 
-@implementation RealmJS
-
-+ (void)initializeContext:(JSContextRef)ctx {
+void RJSInitializeInContext(JSContextRef ctx) {
     JSValueRef exception = NULL;
     JSObjectRef globalObject = JSContextGetGlobalObject(ctx);
 
@@ -82,7 +80,7 @@ static JSValueRef ClearTestState(JSContextRef ctx, JSObjectRef function, JSObjec
     assert(!exception);
 }
 
-+ (void)clearTestState {
+void RJSClearTestState() {
     realm::Realm::s_global_cache.close_all();
     realm::Realm::s_global_cache.clear();
 
@@ -94,5 +92,3 @@ static JSValueRef ClearTestState(JSContextRef ctx, JSObjectRef function, JSObjec
         }
     }
 }
-
-@end

src/RealmRPC.mm

@@ -49,7 +49,7 @@ RPCServer::RPCServer() {
     }
 
     m_requests["/create_session"] = [this](const json dict) {
-        [RealmJS initializeContext:m_context];
+        RJSInitializeInContext(m_context);
 
         JSStringRef realm_string = RJSStringForString("Realm");
         JSObjectRef realm_constructor = RJSValidatedObjectProperty(m_context, JSContextGetGlobalObject(m_context), realm_string);
@@ -173,7 +173,7 @@ RPCServer::RPCServer() {
             m_objects.erase(object.first);
         }
         JSGarbageCollect(m_context);
-        [RealmJS clearTestState];
+        RJSClearTestState();
         return json::object();
     };
 }

tests/RealmJSCoreTests.m

@@ -34,7 +34,7 @@
     RJSModuleLoader *moduleLoader = [[RJSModuleLoader alloc] initWithContext:context];
     NSURL *scriptURL = [[NSBundle bundleForClass:self] URLForResource:@"index" withExtension:@"js"];
 
-    [RealmJS initializeContext:context.JSGlobalContextRef];
+    RJSInitializeInContext(context.JSGlobalContextRef);
 
     // Expose the global Realm object as a global 'realm' CommonJS module.
     [moduleLoader addGlobalModuleObject:context[@"Realm"] forName:@"realm"];