Convert v8::Value::To* to use MaybeLocal

src/api.h

 // 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.
 
 #ifndef V8_API_H_
 #define V8_API_H_
 
 #include "src/v8.h"
 
 #include "include/v8-testing.h"
@@ skipping 301 matching lines @@
   return reinterpret_cast<T*>(obj.location());
 }
 
 template <class T>
 inline v8::Local<T> ToApiHandle(
     v8::internal::Handle<v8::internal::Object> obj) {
   return Utils::Convert<v8::internal::Object, T>(obj);
 }
 
 
+template <class T>
+inline bool ToLocal(v8::internal::MaybeHandle<v8::internal::Object> maybe,
+                    Local<T>* local) {
+  v8::internal::Handle<v8::internal::Object> handle;
+  if (maybe.ToHandle(&handle)) {
+    *local = Utils::Convert<v8::internal::Object, T>(handle);
+    return true;
+  }
+  return false;
+}
+
+
 // Implementations of ToLocal
 
 #define MAKE_TO_LOCAL(Name, From, To)                                       \
   Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \
     return Convert<v8::internal::From, v8::To>(obj);  \
   }
 
 
 #define MAKE_TO_LOCAL_TYPED_ARRAY(Type, typeName, TYPE, ctype, size)        \
   Local<v8::Type##Array> Utils::ToLocal##Type##Array(                       \
@@ skipping 360 matching lines @@
     stress_type_ = stress_type;
   }
 
  private:
   static v8::Testing::StressType stress_type_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_API_H_