JSIExecutor Bundle Splitting Support

Reviewed By: mhorowitz

Differential Revision: D6847638

fbshipit-source-id: d9ae3d182d6f07bcac81cfd06dcc19f8139bb1e4

Author: fromcelticpark

ReactCommon/cxxreact/JSCExecutor.cpp

@@ -689,11 +689,14 @@ namespace facebook {
       return JSC_JSValueMakeUndefined(m_context);
     }
 
-    JSValueRef JSCExecutor::nativeRequire(
-                                          size_t argumentCount,
-                                          const JSValueRef arguments[]) {
-      uint32_t bundleId, moduleId;
-      std::tie(bundleId, moduleId) = parseNativeRequireParameters(m_context, arguments, argumentCount);
+    JSValueRef JSCExecutor::nativeRequire(size_t count, const JSValueRef arguments[]) {
+      if (count > 2 || count == 0) {
+        throw std::invalid_argument("Got wrong number of args");
+      }
+
+      uint32_t moduleId = folly::to<uint32_t>(Value(m_context, arguments[0]).getNumberOrThrow());
+      uint32_t bundleId = count == 2 ? folly::to<uint32_t>(Value(m_context, arguments[1]).getNumberOrThrow()) : 0;
+
       ReactMarker::logMarker(ReactMarker::NATIVE_REQUIRE_START);
       loadModule(bundleId, moduleId);
       ReactMarker::logMarker(ReactMarker::NATIVE_REQUIRE_STOP);

ReactCommon/cxxreact/JSCUtils.cpp

@@ -15,25 +15,5 @@ String jsStringFromBigString(JSContextRef ctx, const JSBigString& bigstr) {
   }
 }
 
-std::pair<uint32_t, uint32_t> parseNativeRequireParameters(
-    const JSGlobalContextRef& context,
-    const JSValueRef arguments[],
-    size_t argumentCount) {
-  uint32_t moduleId = 0, bundleId = 0;
-
-  // use "getNumber" & "folly::to" to throw explicitely in case of an overflow
-  // error during conversion
-  if (argumentCount == 1) {
-    moduleId = folly::to<uint32_t>(Value(context, arguments[0]).getNumberOrThrow());
-  } else if (argumentCount == 2) {
-    moduleId = folly::to<uint32_t>(Value(context, arguments[0]).getNumberOrThrow());
-    bundleId = folly::to<uint32_t>(Value(context, arguments[1]).getNumberOrThrow());
-  } else {
-    throw std::invalid_argument("Got wrong number of args");
-  }
-
-  return std::make_pair(bundleId, moduleId);
-}
-
 }
 }

ReactCommon/cxxreact/JSCUtils.h

@@ -11,13 +11,5 @@ namespace react {
 
 String jsStringFromBigString(JSContextRef ctx, const JSBigString& bigstr);
 
-/**
- * Parses "nativeRequire" parameters
- * and returns pair of "bundle id" & "module id" values
- */
-std::pair<uint32_t, uint32_t> parseNativeRequireParameters(const JSGlobalContextRef& context,
-                                                           const JSValueRef arguments[],
-                                                           size_t argumentCount);
-
 }
 }