WIP: Create a public v8::DictionarySchema API for bulk reads from dict objects.

src/objects.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 62 matching lines @@
 //         - JSValue
 //           - JSDate
 //         - JSMessageObject
 //         - JSModuleNamespace
 //       - JSProxy
 //     - FixedArrayBase
 //       - ByteArray
 //       - BytecodeArray
 //       - FixedArray
 //         - DescriptorArray
+//         - DictionarySchema
 //         - FrameArray
 //         - HashTable
 //           - Dictionary
 //           - StringTable
 //           - StringSet
 //           - CompilationCacheTable
 //           - CodeCacheHashTable
 //           - MapCache
 //         - OrderedHashTable
 //           - OrderedHashSet
@@ skipping 907 matching lines @@
   V(BytecodeArray)               \
   V(FreeSpace)                   \
   V(JSReceiver)                  \
   V(JSObject)                    \
   V(JSArgumentsObject)           \
   V(JSContextExtensionObject)    \
   V(JSGeneratorObject)           \
   V(JSModuleNamespace)           \
   V(Map)                         \
   V(DescriptorArray)             \
+  V(DictionarySchema)            \
   V(FrameArray)                  \
   V(TransitionArray)             \
   V(FeedbackMetadata)            \
   V(FeedbackVector)              \
   V(DeoptimizationInputData)     \
   V(DeoptimizationOutputData)    \
   V(DependentCode)               \
   V(HandlerTable)                \
   V(FixedArray)                  \
   V(BoilerplateDescription)      \
@@ skipping 2209 matching lines @@
   // Transfer a complete descriptor from the src descriptor array to this
   // descriptor array.
   void CopyFrom(int index, DescriptorArray* src);
 
   // Swap first and second descriptor.
   inline void SwapSortedKeys(int first, int second);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(DescriptorArray);
 };
 
+// A list of keys expected to be searched in "dictionary-like" objects.
+// See v8::DictionarySchema.
+class DictionarySchema : public FixedArray {
+ public:
+  static Handle<DictionarySchema> New(Isolate* isolate, int size);
+  DECLARE_CAST(DictionarySchema);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(DictionarySchema);
+};
 
 enum SearchMode { ALL_ENTRIES, VALID_ENTRIES };
 
 template <SearchMode search_mode, typename T>
 inline int Search(T* array, Name* name, int valid_entries = 0,
                   int* out_insertion_index = NULL);
 
 
 // HashTable is a subclass of FixedArray that implements a hash table
 // that uses open addressing and quadratic probing.
@@ skipping 8329 matching lines @@
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_H_