third_party/WebKit/Source/platform/bindings/V8ObjectConstructor.h

/*
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#ifndef V8ObjectConstructor_h
#define V8ObjectConstructor_h

#include "platform/PlatformExport.h"
#include "platform/bindings/V8PerIsolateData.h"
#include "platform/wtf/Allocator.h"
#include "v8/include/v8.h"

namespace blink {

class ConstructorMode {
  STACK_ALLOCATED();

 public:
  enum Mode { kWrapExistingObject, kCreateNewObject };

  ConstructorMode(v8::Isolate* isolate) : isolate_(isolate) {
    V8PerIsolateData* data = V8PerIsolateData::From(isolate_);
    previous_ = data->constructor_mode_;
    data->constructor_mode_ = kWrapExistingObject;
  }

  ~ConstructorMode() {
    V8PerIsolateData* data = V8PerIsolateData::From(isolate_);
    data->constructor_mode_ = previous_;
  }

  static bool Current(v8::Isolate* isolate) {
    return V8PerIsolateData::From(isolate)->constructor_mode_;
  }

 private:
  v8::Isolate* isolate_;
  bool previous_;
};

class PLATFORM_EXPORT V8ObjectConstructor {
  STATIC_ONLY(V8ObjectConstructor);

 public:
  static v8::MaybeLocal<v8::Object> NewInstance(
      v8::Isolate*,
      v8::Local<v8::Function>,
      int argc = 0,
      v8::Local<v8::Value> argv[] = nullptr);

  static void IsValidConstructorMode(
      const v8::FunctionCallbackInfo<v8::Value>&);
};

}  // namespace blink

#endif  // V8ObjectConstructor_h