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   1  <?php
   2  /*
   3   * Limb PHP Framework
   4   *
   5   * @link http://limb-project.com 
   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)
   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html 
   8   */
   9  
  10  /**

  11   * @filter math

  12   * @min_attributes 1

  13   * @max_attributes 9999

  14   * @package wact
  15   * @version $Id: math.filter.php 5945 2007-06-06 08:31:43Z pachanga $
  16   */
  17  
  18  
  19  require_once('limb/wact/src/components/data/math_filter.inc.php');class WactMathFilter extends WactCompilerFilter {
  20  
  21      /**

  22       * Return this value as a PHP value

  23       * @return String

  24       */
  25      function getValue() {
  26        if ($this->isConstant()) {
  27          $value = $this->base->getValue();
  28          $exp = '';
  29          foreach (array_keys($this->parameters) as $i) {
  30            $exp .= $this->parameters[$i]->getValue();
  31          }
  32          return math_filter($value,
  33                             $exp,
  34                             $this->location_in_template->getFile(),
  35                             $this->location_in_template->getLine());
  36        } else {
  37          $this->raiseUnresolvedBindingError();
  38        }
  39      }
  40  
  41      /**

  42       * Generate the code to read the data value at run time

  43       * Must generate only a valid PHP Expression.

  44       * @param WactCodeWriter

  45       * @return void

  46       */
  47      function generateExpression($code_writer) {
  48        $code_writer->registerInclude('limb/wact/src/components/data/math_filter.inc.php');
  49        $code_writer->writePHP('math_filter(');
  50        $this->base->generateExpression($code_writer);
  51        $code_writer->writePHP(',');
  52        $first = true;
  53        foreach (array_keys($this->parameters) as $i) {
  54          if (!$first) {
  55            $code_writer->writePHP('.');
  56          } else {
  57            $first = false;
  58          }
  59          $this->parameters[$i]->generateExpression($code_writer);
  60        }
  61        $code_writer->writePHP(',');
  62        $code_writer->writePHPLiteral($this->location_in_template->getFile());
  63        $code_writer->writePHP(',');
  64        $code_writer->writePHPLiteral($this->location_in_template->getLine());
  65        $code_writer->writePHP(')');
  66      }
  67  }
  68  ?>