storage/mozStorageStatementJSHelper.h
author L10n Bumper Bot <release+l10nbumper@mozilla.com>
Sat, 12 Jan 2019 13:00:19 -0800
changeset 506656 80ab023e1d8eb9f1fbc7d26e3774ef9aebb7dcdb
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
child 530873 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
no bug - Bumping Firefox l10n changesets r=release a=l10n-bump DONTBUILD da -> aa0c4049abaa

/* -*- 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