includes/DeprecatedGlobal.php

   1 <?php
   2 /**
   3  * Delayed loading of deprecated global objects.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * Class to allow throwing wfDeprecated warnings
  25  * when people use globals that we do not want them to.
  26  * (For example like $wgArticle)
  27  */
  28
  29 class DeprecatedGlobal extends StubObject {
  30         // The m's are to stay consistent with parent class.
  31         protected $mRealValue, $mVersion;
  32
  33         function __construct( $name, $realValue, $version = false ) {
  34                 parent::__construct( $name );
  35                 $this->mRealValue = $realValue;
  36                 $this->mVersion = $version;
  37         }
  38
  39         function _newObject() {
  40                 /* Put the caller offset for wfDeprecated as 6, as
  41                  * that gives the function that uses this object, since:
  42                  * 1 = this function ( _newObject )
  43                  * 2 = StubObject::_unstub
  44                  * 3 = StubObject::_call
  45                  * 4 = StubObject::__call
  46                  * 5 = DeprecatedGlobal::<method of global called>
  47                  * 6 = Actual function using the global.
  48                  * Of course its theoretically possible to have other call
  49                  * sequences for this method, but that seems to be
  50                  * rather unlikely.
  51                  */
  52                 wfDeprecated( '$' . $this->mGlobal, $this->mVersion, false, 6 );
  53                 return $this->mRealValue;
  54         }
  55 }