<?php /* SVN FILE: $Id: SassBoolean.php 118 2010-09-21 09:45:11Z chris.l.yates@gmail.com $ */ /**
* SassBoolean class file. * @author Chris Yates <chris.l.yates@gmail.com> * @copyright Copyright (c) 2010 PBM Web Development * @license http://phamlp.googlecode.com/files/license.txt * @package PHamlP * @subpackage Sass.script.literals */
require_once('SassLiteral.php');
/**
* SassBoolean class. * @package PHamlP * @subpackage Sass.script.literals */
class SassBoolean extends SassLiteral {
/**@#+ * Regex for matching and extracting booleans */ const MATCH = '/^(true|false)\b/'; /** * SassBoolean constructor * @param string value of the boolean type * @return SassBoolean */ public function __construct($value) { if (is_bool($value)) { $this->value = $value; } elseif ($value === 'true' || $value === 'false') { $this->value = ($value === 'true' ? true : false); } else { throw new SassBooleanException('Invalid {what}', array('{what}'=>'SassBoolean'), SassScriptParser::$context->node); } } /** * Returns the value of this boolean. * @return boolean the value of this boolean */ public function getValue() { return $this->value; } /** * Returns a string representation of the value. * @return string string representation of the value. */ public function toString() { return $this->getValue() ? 'true' : 'false'; } /** * Returns a value indicating if a token of this type can be matched at * the start of the subject string. * @param string the subject string * @return mixed match at the start of the string or false if no match */ public static function isa($subject) { return (preg_match(self::MATCH, $subject, $matches) ? $matches[0] : false); }
}