Issue 4127 - [emscripten] Convert subscription classes to C++ - Part 2

compiled/subscription/UserDefinedSubscription.cpp

Index: compiled/subscription/UserDefinedSubscription.cpp
===================================================================
--- a/compiled/subscription/UserDefinedSubscription.cpp
+++ b/compiled/subscription/UserDefinedSubscription.cpp
@@ -21,16 +21,33 @@ bool UserDefinedSubscription::IsDefaultF
   return mDefaults & filterTypeToDefaults[filter->mType];
 }
 
 void UserDefinedSubscription::MakeDefaultFor(const Filter* filter)
 {
   mDefaults |= filterTypeToDefaults[filter->mType];
 }
 
+void UserDefinedSubscription::InsertFilterAt(Filter* filter, unsigned pos)
+{
+  if (pos >= mFilters.size())
+    mFilters.emplace_back(filter);
+  else
+    mFilters.emplace(mFilters.begin() + pos, filter);
+}
+
+bool UserDefinedSubscription::RemoveFilterAt(unsigned pos)
+{
+  if (pos >= mFilters.size())
+    return false;
+
+  mFilters.erase(mFilters.begin() + pos);
+  return true;
+}
+
 OwnedString UserDefinedSubscription::Serialize() const
 {
   OwnedString result(Subscription::Serialize());
   if (mDefaults)
   {
     result.append(u"defaults="_str);
     if (mDefaults & Defaults::BLOCKING)
       result.append(u" blocking"_str);