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   1  <?php
   2  //--------------------------------------------------------------------------------
   3  // Copyright 2003 Procata, Inc.
   4  // Released under the LGPL license (http://www.gnu.org/copyleft/lesser.html)
   5  //--------------------------------------------------------------------------------
   6  /**
   7  * @package WACT_TAG
   8  * @version $Id: outputexpression.inc.php,v 1.3 2004/06/15 15:51:51 jeffmoore Exp $
   9  */
  10  //--------------------------------------------------------------------------------
  11  /**
  12  * Outputs the resultof an expression
  13  * @see CoreOutputTag
  14  * @see http://wact.sourceforge.net/index.php/CoreOutputTag
  15  * @access protected
  16  * @package WACT_TAG
  17  */
  18  class OutputExpression extends CompilerComponent {
  19      /**
  20      * @var Expression
  21      * @access private
  22      */
  23      var $expression;
  24  
  25      /**
  26      */
  27  	function OutputExpression($expression) {
  28          $this->expression =& new Expression($expression, $this, 'html');
  29      }
  30  
  31  	function prepare() {
  32          $this->expression->prepare();
  33          parent::prepare();
  34      }
  35      
  36      /**
  37      * @param CodeWriter
  38      * @return void
  39      * @access protected
  40      */
  41  	function generate(&$code) {
  42          if ($this->expression->isConstant()) {
  43              $code->writeHTML($this->expression->getValue());
  44          } else {
  45              $this->expression->generatePreStatement($code);
  46              $code->writePHP('echo ');
  47              $this->expression->generateExpression($code);
  48              $code->writePHP(';');        
  49              $this->expression->generatePostStatement($code);
  50          }
  51      }
  52  
  53  }
  54  ?>