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node_modules/nan/nan_private.h 2.42 KB
aaac7fed   liuqimichale   add
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  /*********************************************************************
   * NAN - Native Abstractions for Node.js
   *
   * Copyright (c) 2018 NAN contributors
   *
   * MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
   ********************************************************************/
  
  #ifndef NAN_PRIVATE_H_
  #define NAN_PRIVATE_H_
  
  inline Maybe<bool>
  HasPrivate(v8::Local<v8::Object> object, v8::Local<v8::String> key) {
    HandleScope scope;
  #if NODE_MODULE_VERSION >= NODE_6_0_MODULE_VERSION
    v8::Isolate *isolate = v8::Isolate::GetCurrent();
    v8::Local<v8::Context> context = isolate->GetCurrentContext();
    v8::Local<v8::Private> private_key = v8::Private::ForApi(isolate, key);
    return object->HasPrivate(context, private_key);
  #else
    return Just(!object->GetHiddenValue(key).IsEmpty());
  #endif
  }
  
  inline MaybeLocal<v8::Value>
  GetPrivate(v8::Local<v8::Object> object, v8::Local<v8::String> key) {
  #if NODE_MODULE_VERSION >= NODE_6_0_MODULE_VERSION
    v8::Isolate *isolate = v8::Isolate::GetCurrent();
    v8::EscapableHandleScope scope(isolate);
    v8::Local<v8::Context> context = isolate->GetCurrentContext();
    v8::Local<v8::Private> private_key = v8::Private::ForApi(isolate, key);
    v8::MaybeLocal<v8::Value> v = object->GetPrivate(context, private_key);
    return scope.Escape(v.ToLocalChecked());
  #else
    EscapableHandleScope scope;
    v8::Local<v8::Value> v = object->GetHiddenValue(key);
    if (v.IsEmpty()) {
      v = Undefined();
    }
    return scope.Escape(v);
  #endif
  }
  
  inline Maybe<bool> SetPrivate(
      v8::Local<v8::Object> object,
      v8::Local<v8::String> key,
      v8::Local<v8::Value> value) {
  #if NODE_MODULE_VERSION >= NODE_6_0_MODULE_VERSION
    HandleScope scope;
    v8::Isolate *isolate = v8::Isolate::GetCurrent();
    v8::Local<v8::Context> context = isolate->GetCurrentContext();
    v8::Local<v8::Private> private_key = v8::Private::ForApi(isolate, key);
    return object->SetPrivate(context, private_key, value);
  #else
    return Just(object->SetHiddenValue(key, value));
  #endif
  }
  
  inline Maybe<bool> DeletePrivate(
      v8::Local<v8::Object> object,
      v8::Local<v8::String> key) {
  #if NODE_MODULE_VERSION >= NODE_6_0_MODULE_VERSION
    HandleScope scope;
    v8::Isolate *isolate = v8::Isolate::GetCurrent();
    v8::Local<v8::Private> private_key = v8::Private::ForApi(isolate, key);
    return object->DeletePrivate(isolate->GetCurrentContext(), private_key);
  #else
    return Just(object->DeleteHiddenValue(key));
  #endif
  }
  
  #endif  // NAN_PRIVATE_H_