PHPUnit_Util_File::getClassesInFile PHP Method

    public static function getClassesInFile($filename)
    {
        if (!isset(self::$cache[$filename])) {
            self::$cache[$filename] = self::parseFile($filename);
        }
        return self::$cache[$filename];
    }

 /**
  * Returns the methods of the class under test
  * that are called from the test methods.
  *
  * @return array
  */
 protected function findTestedMethods()
 {
     $setUpVariables = array();
     $testedMethods = array();
     $classes = PHPUnit_Util_File::getClassesInFile($this->inSourceFile);
     $testMethods = $classes[$this->inClassName['fullyQualifiedClassName']]['methods'];
     unset($classes);
     foreach ($testMethods as $name => $testMethod) {
         if (strtolower($name) == 'setup') {
             $setUpVariables = $this->findVariablesThatReferenceClass($testMethod['tokens']);
             break;
         }
     }
     foreach ($testMethods as $name => $testMethod) {
         $argVariables = array();
         if (strtolower($name) == 'setup') {
             continue;
         }
         $start = strpos($testMethod['signature'], '(') + 1;
         $end = strlen($testMethod['signature']) - $start - 1;
         $args = substr($testMethod['signature'], $start, $end);
         foreach (explode(',', $args) as $arg) {
             $arg = explode(' ', trim($arg));
             if (count($arg) == 2) {
                 $type = $arg[0];
                 $var = $arg[1];
             } else {
                 $type = NULL;
                 $var = $arg[0];
             }
             if ($type == $this->outClassName['fullyQualifiedClassName']) {
                 $argVariables[] = $var;
             }
         }
         $variables = array_unique(array_merge($setUpVariables, $argVariables, $this->findVariablesThatReferenceClass($testMethod['tokens'])));
         foreach ($testMethod['tokens'] as $i => $token) {
             // Class::method()
             if (is_array($token) && $token[0] == T_DOUBLE_COLON && is_array($testMethod['tokens'][$i - 1]) && $testMethod['tokens'][$i - 1][0] == T_STRING && $testMethod['tokens'][$i - 1][1] == $this->outClassName['fullyQualifiedClassName'] && is_array($testMethod['tokens'][$i + 1]) && $testMethod['tokens'][$i + 1][0] == T_STRING && $testMethod['tokens'][$i + 2] == '(') {
                 $testedMethods[] = $testMethod['tokens'][$i + 1][1];
             } else {
                 if (is_array($token) && $token[0] == T_OBJECT_OPERATOR && in_array($this->findVariableName($testMethod['tokens'], $i), $variables) && is_array($testMethod['tokens'][$i + 2]) && $testMethod['tokens'][$i + 2][0] == T_OBJECT_OPERATOR && is_array($testMethod['tokens'][$i + 3]) && $testMethod['tokens'][$i + 3][0] == T_STRING && $testMethod['tokens'][$i + 4] == '(') {
                     $testedMethods[] = $testMethod['tokens'][$i + 3][1];
                 } else {
                     if (is_array($token) && $token[0] == T_OBJECT_OPERATOR && in_array($this->findVariableName($testMethod['tokens'], $i), $variables) && is_array($testMethod['tokens'][$i + 1]) && $testMethod['tokens'][$i + 1][0] == T_STRING && $testMethod['tokens'][$i + 2] == '(') {
                         $testedMethods[] = $testMethod['tokens'][$i + 1][1];
                     }
                 }
             }
         }
     }
     $testedMethods = array_unique($testedMethods);
     sort($testedMethods);
     return $testedMethods;
 }