Expose the ValueSerializer data format version as a compile-time constant.

src/value-serializer.cc

 // Copyright 2016 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.
 
 #include "src/value-serializer.h"
 
 #include <type_traits>
 
+#include "include/v8-value-serializer-version.h"
 #include "src/base/logging.h"
 #include "src/conversions.h"
 #include "src/factory.h"
 #include "src/flags.h"
 #include "src/handles-inl.h"
 #include "src/isolate.h"
 #include "src/objects-inl.h"
 #include "src/objects.h"
 #include "src/snapshot/code-serializer.h"
 #include "src/transitions.h"
 #include "src/wasm/wasm-module.h"
 #include "src/wasm/wasm-objects.h"
 #include "src/wasm/wasm-result.h"
 
 namespace v8 {
 namespace internal {
 
 // Version 9: (imported from Blink)
 // Version 10: one-byte (Latin-1) strings
 // Version 11: properly separate undefined from the hole in arrays
 // Version 12: regexp and string objects share normal string encoding
 // Version 13: host objects have an explicit tag (rather than handling all
 //             unknown tags)
 static const uint32_t kLatestVersion = 13;
+static_assert(kLatestVersion == v8::CurrentValueSerializerFormatVersion(),
+              "Exported format version must match latest version.");
 
 static const int kPretenureThreshold = 100 * KB;
 
 template <typename T>
 static size_t BytesNeededForVarint(T value) {
   static_assert(std::is_integral<T>::value && std::is_unsigned<T>::value,
                 "Only unsigned integer types can be written as varints.");
   size_t result = 0;
   do {
     result++;
@@ skipping 104 matching lines @@
   kFloat64Array = 'F',
   kDataView = '?',
 };
 
 enum class WasmEncodingTag : uint8_t {
   kRawBytes = 'y',
 };
 
 }  // namespace
 
-// static
-uint32_t ValueSerializer::GetCurrentDataFormatVersion() {
-  return kLatestVersion;
-}
-
 ValueSerializer::ValueSerializer(Isolate* isolate,
                                  v8::ValueSerializer::Delegate* delegate)
     : isolate_(isolate),
       delegate_(delegate),
       zone_(isolate->allocator(), ZONE_NAME),
       id_map_(isolate->heap(), ZoneAllocationPolicy(&zone_)),
       array_buffer_transfer_map_(isolate->heap(),
                                  ZoneAllocationPolicy(&zone_)) {}
 
 ValueSerializer::~ValueSerializer() {
@@ skipping 1848 matching lines @@
   if (stack.size() != 1) {
     isolate_->Throw(*isolate_->factory()->NewError(
         MessageTemplate::kDataCloneDeserializationError));
     return MaybeHandle<Object>();
   }
   return scope.CloseAndEscape(stack[0]);
 }
 
 }  // namespace internal
 }  // namespace v8