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       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2             :  * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef MOZSTORAGESTATEMENTJSHELPER_H
       8             : #define MOZSTORAGESTATEMENTJSHELPER_H
       9             : 
      10             : #include "nsIXPCScriptable.h"
      11             : #include "nsIXPConnect.h"
      12             : 
      13             : class Statement;
      14             : 
      15             : namespace mozilla {
      16             : namespace storage {
      17             : 
      18           0 : class StatementJSHelper : public nsIXPCScriptable
      19             : {
      20             : public:
      21             :   NS_DECL_ISUPPORTS
      22             :   NS_DECL_NSIXPCSCRIPTABLE
      23             : 
      24             : private:
      25             :   nsresult getRow(Statement *, JSContext *, JSObject *, JS::Value *);
      26             :   nsresult getParams(Statement *, JSContext *, JSObject *, JS::Value *);
      27             : };
      28             : 
      29             : /**
      30             :  * Wrappers used to clean up the references JS helpers hold to the statement.
      31             :  * For cycle-avoidance reasons they do not hold reference-counted references,
      32             :  * so it is important we do this.
      33             :  */
      34             : class StatementJSObjectHolder : public nsIXPConnectJSObjectHolder
      35             : {
      36             : public:
      37             :   NS_DECL_ISUPPORTS
      38             :   NS_DECL_NSIXPCONNECTJSOBJECTHOLDER
      39             : 
      40             :   explicit StatementJSObjectHolder(nsIXPConnectJSObjectHolder* aHolder);
      41             : 
      42             : protected:
      43           0 :   virtual ~StatementJSObjectHolder() {};
      44             :   nsCOMPtr<nsIXPConnectJSObjectHolder> mHolder;
      45             : };
      46             : 
      47             : class StatementParamsHolder final: public StatementJSObjectHolder {
      48             : public:
      49           0 :   explicit StatementParamsHolder(nsIXPConnectJSObjectHolder* aHolder)
      50           0 :     : StatementJSObjectHolder(aHolder) {
      51           0 :   }
      52             : 
      53             : private:
      54             :   virtual ~StatementParamsHolder();
      55             : };
      56             : 
      57             : class StatementRowHolder final: public StatementJSObjectHolder {
      58             : public:
      59           0 :   explicit StatementRowHolder(nsIXPConnectJSObjectHolder* aHolder)
      60           0 :     : StatementJSObjectHolder(aHolder) {
      61           0 :   }
      62             : 
      63             : private:
      64             :   virtual ~StatementRowHolder();
      65             : };
      66             : 
      67             : } // namespace storage
      68             : } // namespace mozilla
      69             : 
      70             : #endif // MOZSTORAGESTATEMENTJSHELPER_H