Created
September 14, 2016 23:39
-
-
Save terryjsmith/e64ad6bc0cca422ff615ad0b58dd5d20 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /** | |
| * A helper class that other types can be inherited from (handles basic V8 integration) | |
| */ | |
| class ScriptObject { | |
| public: | |
| ScriptObject(); | |
| ~ScriptObject(); | |
| /** | |
| * Unwrap a v8::object back into a C++ object | |
| */ | |
| template <class T> | |
| static inline T* Unwrap(v8::Local<v8::Object> handle) | |
| { | |
| assert(!handle.IsEmpty()); | |
| assert(handle->InternalFieldCount() > 0); | |
| // Cast to ObjectWrap before casting to T. A direct cast from void | |
| // to T won't work right when T has more than one base class. | |
| void* ptr = handle->GetAlignedPointerFromInternalField(0); | |
| ScriptObject* wrap = static_cast<ScriptObject*>(ptr); | |
| return static_cast<T*>(wrap); | |
| } | |
| /** | |
| * Wrap a c++ object to pass back into v8 | |
| */ | |
| inline void Wrap(v8::Local<v8::Object> handle) | |
| { | |
| assert(m_handle.IsEmpty()); | |
| assert(handle->InternalFieldCount() > 0); | |
| handle->SetAlignedPointerInInternalField(0, this); | |
| m_handle.Reset(v8::Isolate::GetCurrent(), handle); | |
| } | |
| protected: | |
| v8::Persistent<v8::Object> m_handle; | |
| }; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment