Issue 4127 - [emscripten] Convert subscription classes to C++ - Part 1

compiled/StringMap.h

 #pragma once
 
 #include <cstddef>
 #include <cmath>
 #include <initializer_list>
 #include <memory>
 
 #include "String.h"
 #include "debug.h"
 
@@ skipping 197 matching lines @@
 
     const_iterator begin() const
     {
       return const_iterator(&mBuckets[0], &mBuckets[mBucketCount]);
     }
 
     const_iterator end() const
     {
       return const_iterator(&mBuckets[mBucketCount], &mBuckets[mBucketCount]);
     }
+
+    size_type size() const
+    {
+      return mBucketCount;
+    }
+
+    size_type length() const
+    {
+      return mEntryCount;
+    }
   };
 
   struct StringSetEntry
   {
     StringSetEntry() {}
     StringSetEntry(const String& key)
         : first(key)
     {
     }
 
@@ skipping 98 matching lines @@
   const_reference find(const String& key) const
   {
     return super::find(key);
   }
 
   reference find(const String& key)
   {
     return reference(this, key, super::find_bucket(key));
   }
 };