storage/mozStorageStatementJSHelper.h
author Agi Sferro <agi@sferro.dev>
Wed, 13 Nov 2019 20:29:15 +0000
changeset 501843 bf09025d6f98793965458b5805a8f53564ce540a
parent 472094 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Bug 1530402 - Implement {Browser,Page}Action for GeckoView. r=snorp,mixedpuppy,esawin Design doc: https://docs.google.com/document/d/1XJuKk9Hm_2RNbX8KRcyUOXTaELBWYMyXBUchz15OElY Differential Revision: https://phabricator.services.mozilla.com/D49041

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZSTORAGESTATEMENTJSHELPER_H
#define MOZSTORAGESTATEMENTJSHELPER_H

#include "nsIXPCScriptable.h"
#include "nsIXPConnect.h"

class Statement;

namespace mozilla {
namespace storage {

class StatementParams;
class StatementRow;

class StatementJSHelper : public nsIXPCScriptable {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIXPCSCRIPTABLE

 private:
  nsresult getRow(Statement*, JSContext*, JSObject*, JS::Value*);
  nsresult getParams(Statement*, JSContext*, JSObject*, JS::Value*);
};

/**
 * Wrappers used to clean up the references JS helpers hold to the statement.
 * For cycle-avoidance reasons they do not hold reference-counted references,
 * so it is important we do this.
 */

class StatementParamsHolder final : public nsISupports {
 public:
  NS_DECL_ISUPPORTS

  explicit StatementParamsHolder(StatementParams* aParams) : mParams(aParams) {}

  StatementParams* Get() const {
    MOZ_ASSERT(mParams);
    return mParams;
  }

 private:
  virtual ~StatementParamsHolder();

  RefPtr<StatementParams> mParams;
};

class StatementRowHolder final : public nsISupports {
 public:
  NS_DECL_ISUPPORTS

  explicit StatementRowHolder(StatementRow* aRow) : mRow(aRow) {}

  StatementRow* Get() const {
    MOZ_ASSERT(mRow);
    return mRow;
  }

 private:
  virtual ~StatementRowHolder();

  RefPtr<StatementRow> mRow;
};

}  // namespace storage
}  // namespace mozilla

#endif  // MOZSTORAGESTATEMENTJSHELPER_H