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/*********************************************************************
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* NAN - Native Abstractions for Node.js
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*
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* Copyright (c) 2016 NAN contributors
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*
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* MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
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********************************************************************/
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#ifndef NAN_WEAK_H_
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#define NAN_WEAK_H_
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static const int kInternalFieldsInWeakCallback = 2;
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static const int kNoInternalFieldIndex = -1;
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#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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# define NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ \
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v8::WeakCallbackInfo<WeakCallbackInfo<T> > const&
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# define NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ \
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_PARAMETER_CALLBACK_SIG_ NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_TWOFIELD_CALLBACK_SIG_ NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > IOJS_1_1_MODULE_VERSION
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# define NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ \
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v8::PhantomCallbackData<WeakCallbackInfo<T> > const&
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# define NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ \
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_PARAMETER_CALLBACK_SIG_ NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_TWOFIELD_CALLBACK_SIG_ NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > NODE_0_12_MODULE_VERSION
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# define NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ \
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v8::PhantomCallbackData<WeakCallbackInfo<T> > const&
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# define NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ \
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v8::InternalFieldsCallbackData<WeakCallbackInfo<T>, void> const&
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# define NAN_WEAK_PARAMETER_CALLBACK_SIG_ NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_TWOFIELD_CALLBACK_SIG_ NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
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# define NAN_WEAK_CALLBACK_DATA_TYPE_ \
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v8::WeakCallbackData<S, WeakCallbackInfo<T> > const&
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# define NAN_WEAK_CALLBACK_SIG_ NAN_WEAK_CALLBACK_DATA_TYPE_
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#else
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# define NAN_WEAK_CALLBACK_DATA_TYPE_ void *
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# define NAN_WEAK_CALLBACK_SIG_ \
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v8::Persistent<v8::Value>, NAN_WEAK_CALLBACK_DATA_TYPE_
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#endif
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template<typename T>
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class WeakCallbackInfo {
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public:
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typedef void (*Callback)(const WeakCallbackInfo<T>& data);
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WeakCallbackInfo(
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Persistent<v8::Value> *persistent
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, Callback callback
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, void *parameter
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, void *field1 = 0
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, void *field2 = 0) :
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callback_(callback), isolate_(0), parameter_(parameter) {
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std::memcpy(&persistent_, persistent, sizeof (v8::Persistent<v8::Value>));
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internal_fields_[0] = field1;
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internal_fields_[1] = field2;
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}
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inline v8::Isolate *GetIsolate() const { return isolate_; }
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inline T *GetParameter() const { return static_cast<T*>(parameter_); }
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inline void *GetInternalField(int index) const {
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assert((index == 0 || index == 1) && "internal field index out of bounds");
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if (index == 0) {
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return internal_fields_[0];
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} else {
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return internal_fields_[1];
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}
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}
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private:
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NAN_DISALLOW_ASSIGN_COPY_MOVE(WeakCallbackInfo)
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Callback callback_;
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v8::Isolate *isolate_;
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void *parameter_;
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void *internal_fields_[kInternalFieldsInWeakCallback];
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v8::Persistent<v8::Value> persistent_;
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template<typename S, typename M> friend class Persistent;
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template<typename S> friend class PersistentBase;
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#if NODE_MODULE_VERSION <= NODE_0_12_MODULE_VERSION
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# if NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
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template<typename S>
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static void invoke(NAN_WEAK_CALLBACK_SIG_ data);
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template<typename S>
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static WeakCallbackInfo *unwrap(NAN_WEAK_CALLBACK_DATA_TYPE_ data);
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# else
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static void invoke(NAN_WEAK_CALLBACK_SIG_ data);
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static WeakCallbackInfo *unwrap(NAN_WEAK_CALLBACK_DATA_TYPE_ data);
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# endif
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#else
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# if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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template<bool isFirstPass>
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static void invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data);
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template<bool isFirstPass>
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static void invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data);
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# else
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static void invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data);
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static void invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data);
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# endif
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static WeakCallbackInfo *unwrapparameter(
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ data);
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static WeakCallbackInfo *unwraptwofield(
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NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ data);
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#endif
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};
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#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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template<typename T>
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template<bool isFirstPass>
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void
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WeakCallbackInfo<T>::invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrapparameter(data);
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if (isFirstPass) {
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cbinfo->persistent_.Reset();
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data.SetSecondPassCallback(invokeparameter<false>);
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} else {
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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}
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template<typename T>
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template<bool isFirstPass>
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void
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WeakCallbackInfo<T>::invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwraptwofield(data);
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if (isFirstPass) {
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cbinfo->persistent_.Reset();
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data.SetSecondPassCallback(invoketwofield<false>);
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} else {
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrapparameter(
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetParameter());
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwraptwofield(
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NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetInternalField(0));
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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#undef NAN_WEAK_PARAMETER_CALLBACK_SIG_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_SIG_
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#undef NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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# elif NODE_MODULE_VERSION > NODE_0_12_MODULE_VERSION
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template<typename T>
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void
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WeakCallbackInfo<T>::invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrapparameter(data);
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cbinfo->persistent_.Reset();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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void
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WeakCallbackInfo<T>::invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwraptwofield(data);
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cbinfo->persistent_.Reset();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrapparameter(
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetParameter());
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwraptwofield(
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NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetInternalField1());
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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#undef NAN_WEAK_PARAMETER_CALLBACK_SIG_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_SIG_
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#undef NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
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template<typename T>
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template<typename S>
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void WeakCallbackInfo<T>::invoke(NAN_WEAK_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrap(data);
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cbinfo->persistent_.Reset();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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template<typename S>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrap(
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NAN_WEAK_CALLBACK_DATA_TYPE_ data) {
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void *parameter = data.GetParameter();
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(parameter);
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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#undef NAN_WEAK_CALLBACK_SIG_
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#undef NAN_WEAK_CALLBACK_DATA_TYPE_
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#else
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template<typename T>
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void WeakCallbackInfo<T>::invoke(NAN_WEAK_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrap(data);
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cbinfo->persistent_.Dispose();
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cbinfo->persistent_.Clear();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrap(
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NAN_WEAK_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data);
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cbinfo->isolate_ = v8::Isolate::GetCurrent();
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return cbinfo;
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}
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#undef NAN_WEAK_CALLBACK_SIG_
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#undef NAN_WEAK_CALLBACK_DATA_TYPE_
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#endif
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#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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template<typename T, typename M>
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template<typename P>
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inline void Persistent<T, M>::SetWeak(
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P *parameter
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, typename WeakCallbackInfo<P>::Callback callback
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, WeakCallbackType type) {
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WeakCallbackInfo<P> *wcbd;
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if (type == WeakCallbackType::kParameter) {
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wcbd = new WeakCallbackInfo<P>(
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reinterpret_cast<Persistent<v8::Value>*>(this)
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, callback
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, parameter);
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v8::PersistentBase<T>::SetWeak(
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wcbd
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, WeakCallbackInfo<P>::template invokeparameter<true>
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, type);
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} else {
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v8::Local<T>* self = reinterpret_cast<v8::Local<T>*>(this);
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assert((*self)->IsObject());
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int count = (*self)->InternalFieldCount();
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void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
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for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
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internal_fields[i] = (*self)->GetAlignedPointerFromInternalField(i);
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}
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wcbd = new WeakCallbackInfo<P>(
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reinterpret_cast<Persistent<v8::Value>*>(this)
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, callback
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, 0
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, internal_fields[0]
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, internal_fields[1]);
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(*self)->SetAlignedPointerInInternalField(0, wcbd);
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v8::PersistentBase<T>::SetWeak(
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static_cast<WeakCallbackInfo<P>*>(0)
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, WeakCallbackInfo<P>::template invoketwofield<true>
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, type);
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}
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}
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293 |
#elif NODE_MODULE_VERSION > IOJS_1_1_MODULE_VERSION
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294 |
template<typename T, typename M>
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template<typename P>
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296 |
inline void Persistent<T, M>::SetWeak(
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P *parameter
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, typename WeakCallbackInfo<P>::Callback callback
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, WeakCallbackType type) {
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300 |
WeakCallbackInfo<P> *wcbd;
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301 |
if (type == WeakCallbackType::kParameter) {
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wcbd = new WeakCallbackInfo<P>(
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reinterpret_cast<Persistent<v8::Value>*>(this)
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, callback
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, parameter);
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306 |
v8::PersistentBase<T>::SetPhantom(
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307 |
wcbd
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, WeakCallbackInfo<P>::invokeparameter);
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309 |
} else {
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310 |
v8::Local<T>* self = reinterpret_cast<v8::Local<T>*>(this);
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311 |
assert((*self)->IsObject());
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312 |
int count = (*self)->InternalFieldCount();
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313 |
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
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314 |
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
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315 |
internal_fields[i] = (*self)->GetAlignedPointerFromInternalField(i);
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316 |
}
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317 |
wcbd = new WeakCallbackInfo<P>(
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318 |
reinterpret_cast<Persistent<v8::Value>*>(this)
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|
|
319 |
, callback
|
|
|
320 |
, 0
|
|
|
321 |
, internal_fields[0]
|
|
|
322 |
, internal_fields[1]);
|
|
|
323 |
(*self)->SetAlignedPointerInInternalField(0, wcbd);
|
|
|
324 |
v8::PersistentBase<T>::SetPhantom(
|
|
|
325 |
static_cast<WeakCallbackInfo<P>*>(0)
|
|
|
326 |
, WeakCallbackInfo<P>::invoketwofield
|
|
|
327 |
, 0
|
|
|
328 |
, count > 1 ? 1 : kNoInternalFieldIndex);
|
|
|
329 |
}
|
|
|
330 |
}
|
|
|
331 |
#elif NODE_MODULE_VERSION > NODE_0_12_MODULE_VERSION
|
|
|
332 |
template<typename T, typename M>
|
|
|
333 |
template<typename P>
|
|
|
334 |
inline void Persistent<T, M>::SetWeak(
|
|
|
335 |
P *parameter
|
|
|
336 |
, typename WeakCallbackInfo<P>::Callback callback
|
|
|
337 |
, WeakCallbackType type) {
|
|
|
338 |
WeakCallbackInfo<P> *wcbd;
|
|
|
339 |
if (type == WeakCallbackType::kParameter) {
|
|
|
340 |
wcbd = new WeakCallbackInfo<P>(
|
|
|
341 |
reinterpret_cast<Persistent<v8::Value>*>(this)
|
|
|
342 |
, callback
|
|
|
343 |
, parameter);
|
|
|
344 |
v8::PersistentBase<T>::SetPhantom(
|
|
|
345 |
wcbd
|
|
|
346 |
, WeakCallbackInfo<P>::invokeparameter);
|
|
|
347 |
} else {
|
|
|
348 |
v8::Local<T>* self = reinterpret_cast<v8::Local<T>*>(this);
|
|
|
349 |
assert((*self)->IsObject());
|
|
|
350 |
int count = (*self)->InternalFieldCount();
|
|
|
351 |
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
|
|
352 |
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
|
|
353 |
internal_fields[i] = (*self)->GetAlignedPointerFromInternalField(i);
|
|
|
354 |
}
|
|
|
355 |
wcbd = new WeakCallbackInfo<P>(
|
|
|
356 |
reinterpret_cast<Persistent<v8::Value>*>(this)
|
|
|
357 |
, callback
|
|
|
358 |
, 0
|
|
|
359 |
, internal_fields[0]
|
|
|
360 |
, internal_fields[1]);
|
|
|
361 |
(*self)->SetAlignedPointerInInternalField(0, wcbd);
|
|
|
362 |
v8::PersistentBase<T>::SetPhantom(
|
|
|
363 |
WeakCallbackInfo<P>::invoketwofield
|
|
|
364 |
, 0
|
|
|
365 |
, count > 1 ? 1 : kNoInternalFieldIndex);
|
|
|
366 |
}
|
|
|
367 |
}
|
|
|
368 |
#elif NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
|
|
|
369 |
template<typename T, typename M>
|
|
|
370 |
template<typename P>
|
|
|
371 |
inline void Persistent<T, M>::SetWeak(
|
|
|
372 |
P *parameter
|
|
|
373 |
, typename WeakCallbackInfo<P>::Callback callback
|
|
|
374 |
, WeakCallbackType type) {
|
|
|
375 |
WeakCallbackInfo<P> *wcbd;
|
|
|
376 |
if (type == WeakCallbackType::kParameter) {
|
|
|
377 |
wcbd = new WeakCallbackInfo<P>(
|
|
|
378 |
reinterpret_cast<Persistent<v8::Value>*>(this)
|
|
|
379 |
, callback
|
|
|
380 |
, parameter);
|
|
|
381 |
v8::PersistentBase<T>::SetWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
|
|
382 |
} else {
|
|
|
383 |
v8::Local<T>* self = reinterpret_cast<v8::Local<T>*>(this);
|
|
|
384 |
assert((*self)->IsObject());
|
|
|
385 |
int count = (*self)->InternalFieldCount();
|
|
|
386 |
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
|
|
387 |
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
|
|
388 |
internal_fields[i] = (*self)->GetAlignedPointerFromInternalField(i);
|
|
|
389 |
}
|
|
|
390 |
wcbd = new WeakCallbackInfo<P>(
|
|
|
391 |
reinterpret_cast<Persistent<v8::Value>*>(this)
|
|
|
392 |
, callback
|
|
|
393 |
, 0
|
|
|
394 |
, internal_fields[0]
|
|
|
395 |
, internal_fields[1]);
|
|
|
396 |
v8::PersistentBase<T>::SetWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
|
|
397 |
}
|
|
|
398 |
}
|
|
|
399 |
#else
|
|
|
400 |
template<typename T>
|
|
|
401 |
template<typename P>
|
|
|
402 |
inline void PersistentBase<T>::SetWeak(
|
|
|
403 |
P *parameter
|
|
|
404 |
, typename WeakCallbackInfo<P>::Callback callback
|
|
|
405 |
, WeakCallbackType type) {
|
|
|
406 |
WeakCallbackInfo<P> *wcbd;
|
|
|
407 |
if (type == WeakCallbackType::kParameter) {
|
|
|
408 |
wcbd = new WeakCallbackInfo<P>(
|
|
|
409 |
reinterpret_cast<Persistent<v8::Value>*>(this)
|
|
|
410 |
, callback
|
|
|
411 |
, parameter);
|
|
|
412 |
persistent.MakeWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
|
|
413 |
} else {
|
|
|
414 |
v8::Local<T>* self = reinterpret_cast<v8::Local<T>*>(this);
|
|
|
415 |
assert((*self)->IsObject());
|
|
|
416 |
int count = (*self)->InternalFieldCount();
|
|
|
417 |
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
|
|
418 |
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
|
|
419 |
internal_fields[i] = (*self)->GetPointerFromInternalField(i);
|
|
|
420 |
}
|
|
|
421 |
wcbd = new WeakCallbackInfo<P>(
|
|
|
422 |
reinterpret_cast<Persistent<v8::Value>*>(this)
|
|
|
423 |
, callback
|
|
|
424 |
, 0
|
|
|
425 |
, internal_fields[0]
|
|
|
426 |
, internal_fields[1]);
|
|
|
427 |
persistent.MakeWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
|
|
428 |
}
|
|
|
429 |
}
|
|
|
430 |
#endif
|
|
|
431 |
|
|
|
432 |
#endif // NAN_WEAK_H_
|