Provide method for getting Isolate by v8::Message

src/api.cc

 // Copyright 2012 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/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 2283 matching lines @@
 bool Message::IsSharedCrossOrigin() const {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ENTER_V8(isolate);
   auto self = Utils::OpenHandle(this);
   auto script = i::Handle<i::JSValue>::cast(
       i::Handle<i::Object>(self->script(), isolate));
   return i::Script::cast(script->value())->is_shared_cross_origin();
 }
 
 
+v8::Isolate* Message::GetIsolate() const {
+  return reinterpret_cast<Isolate*>(Utils::OpenHandle(this)->GetIsolate());
+}
+
+
 MaybeLocal<String> Message::GetSourceLine(Local<Context> context) const {
   PREPARE_FOR_EXECUTION(context, "v8::Message::GetSourceLine()", String);
   i::Handle<i::Object> result;
   has_pending_exception =
       !CallV8HeapFunction(isolate, "GetSourceLine", Utils::OpenHandle(this))
            .ToHandle(&result);
   RETURN_ON_FAILED_EXECUTION(String);
   Local<String> str;
   if (result->IsString()) {
     str = Utils::ToLocal(i::Handle<i::String>::cast(result));
@@ skipping 5680 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal