[IndexedDB] Propogating changes to observers : Renderer

third_party/WebKit/Source/bindings/core/v8/ToV8.h

 // Copyright 2014 The Chromium 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 ToV8_h
 #define ToV8_h
 
 // toV8() provides C++ -> V8 conversion. Note that toV8() can return an empty
 // handle. Call sites must check IsEmpty() before using return value.
 
@@ skipping 227 matching lines @@
     for (unsigned i = 0; i < value.size(); ++i) {
         v8::Local<v8::Value> v8Value = toV8(value[i].second, object, isolate);
         if (v8Value.IsEmpty())
             v8Value = v8::Undefined(isolate);
         if (!v8CallBoolean(object->CreateDataProperty(isolate->GetCurrentContext(), v8String(isolate, value[i].first), v8Value)))
             return v8::Local<v8::Value>();
     }
     return object;
 }
 
+template <typename T>
+inline v8::Local<v8::Value> toV8(const HeapVector<std::pair<String, T>>& value, v8::Local<v8::Object> creationContext, v8::Isolate* isolate)
+{
+    v8::Local<v8::Object> object;
+    {
+        v8::Context::Scope contextScope(creationContext->CreationContext());
+        object = v8::Object::New(isolate);
+    }
+    for (unsigned i = 0; i < value.size(); ++i) {
+        v8::Local<v8::Value> v8Value = toV8(value[i].second, object, isolate);
+        if (v8Value.IsEmpty())
+            v8Value = v8::Undefined(isolate);
+        if (!v8CallBoolean(object->CreateDataProperty(isolate->GetCurrentContext(), v8String(isolate, value[i].first), v8Value)))
+            return v8::Local<v8::Value>();
+    }
+    return object;
+}
+
 // In all cases allow script state instead of creation context + isolate.
 // Use this function only if the call site does not otherwise need the global,
 // since v8::Context::Global is heavy.
 template<typename T>
 inline v8::Local<v8::Value> toV8(T&& value, ScriptState* scriptState)
 {
     return toV8(std::forward<T>(value), scriptState->context()->Global(), scriptState->isolate());
 }
 
 // Only declare toV8(void*,...) for checking function overload mismatch.
 // This toV8(void*,...) should be never used. So we will find mismatch
 // because of "unresolved external symbol".
 // Without toV8(void*, ...), call to toV8 with T* will match with
 // toV8(bool, ...) if T is not a subclass of ScriptWrappable or if T is
 // declared but not defined (so it's not clear that T is a subclass of
 // ScriptWrappable).
 // This hack helps detect such unwanted implicit conversions from T* to bool.
 v8::Local<v8::Value> toV8(void* value, v8::Local<v8::Object> creationContext, v8::Isolate*) = delete;
 
 // Cannot define in ScriptValue because of the circular dependency between toV8 and ScriptValue
 template<typename T>
 inline ScriptValue ScriptValue::from(ScriptState* scriptState, T&& value)
 {
     return ScriptValue(scriptState, toV8(std::forward<T>(value), scriptState));
 }
 
 } // namespace blink
 
 #endif // ToV8_h