third_party/blink/renderer/platform/bindings/v8_object_constructor.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_V8_OBJECT_CONSTRUCTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_V8_OBJECT_CONSTRUCTOR_H_

#include "third_party/blink/renderer/platform/bindings/v8_per_isolate_data.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/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:
  enum class CreationMode {
    kInstallConditionalFeatures,
    kDoNotInstallConditionalFeatures,
  };

  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>&);

  // Returns the interface object of the wrapper type in the context. If you
  // call with CreationMode::kDoNotInstallConditionalFeatures, no conditional
  // features are installed.
  static v8::Local<v8::Function> CreateInterfaceObject(
      const WrapperTypeInfo*,
      v8::Local<v8::Context>,
      const DOMWrapperWorld&,
      v8::Isolate*,
      v8::Local<v8::Function> parent_interface,
      CreationMode);
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_V8_OBJECT_CONSTRUCTOR_H_