ComplexPrimitive.class.php

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00001 <?php
00002 /***************************************************************************
00003  *   Copyright (C) 2004-2007 by Konstantin V. Arkhipov                     *
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU Lesser General Public License as        *
00007  *   published by the Free Software Foundation; either version 3 of the    *
00008  *   License, or (at your option) any later version.                       *
00009  *                                                                         *
00010  ***************************************************************************/
00011 
00018     abstract class ComplexPrimitive extends RangedPrimitive
00019     {
00020         private $single = null; // single, not single or fsck it
00021 
00022         public function __construct($name)
00023         {
00024             $this->single = new Ternary(null);
00025             parent::__construct($name);
00026         }
00027 
00031         public function getState()
00032         {
00033             return $this->single;
00034         }
00035 
00039         public function setState(Ternary $ternary)
00040         {
00041             $this->single->setValue($ternary->getValue());
00042 
00043             return $this;
00044         }
00045 
00049         public function setSingle()
00050         {
00051             $this->single->setTrue();
00052 
00053             return $this;
00054         }
00055 
00059         public function setComplex()
00060         {
00061             $this->single->setFalse();
00062 
00063             return $this;
00064         }
00065 
00069         public function setAnyState()
00070         {
00071             $this->single->setNull();
00072 
00073             return $this;
00074         }
00075 
00076         // implement me, child :-)
00077         abstract protected function importSingle($scope);
00078         abstract protected function importMarried($scope);
00079 
00080         public function import($scope)
00081         {
00082             if (!BasePrimitive::import($scope))
00083                 return null;
00084             
00085             if ($this->single->isTrue())
00086                 return $this->importSingle($scope);
00087             elseif ($this->single->isFalse())
00088                 return $this->importMarried($scope);
00089             else {
00090                 if (!$this->importMarried($scope))
00091                     return $this->importSingle($scope);
00092 
00093                 return true;
00094             }
00095 
00096             Assert::isUnreachable();
00097         }
00098         
00099         public function exportValue()
00100         {
00101             throw new UnimplementedFeatureException();
00102         }
00103     }
00104 ?>