blob: 151c7df81688eaf216c7288da76d373719820e4d [file] [log] [blame]
// Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/script/v8c/v8c_callback_interface.h"
#include "base/logging.h"
namespace cobalt {
namespace script {
namespace v8c {
// Helper class to get the actual callable object from a v8::Object
// implementing a callback interface.
// Returns true if a callable was found, and false if not.
v8::MaybeLocal<v8::Function> GetCallableForCallbackInterface(
v8::Isolate* isolate, v8::Local<v8::Object> implementing_object,
v8::Local<v8::String> key) {
DCHECK(!implementing_object.IsEmpty());
if (implementing_object->IsFunction()) {
return implementing_object.As<v8::Function>();
}
v8::MaybeLocal<v8::Value> maybe_property_value =
implementing_object->Get(isolate->GetCurrentContext(), key);
v8::Local<v8::Value> property_value;
if (!maybe_property_value.ToLocal(&property_value)) {
return {};
}
if (!property_value->IsFunction()) {
return {};
}
return property_value.As<v8::Function>();
}
} // namespace v8c
} // namespace script
} // namespace cobalt