Adding Token Date support to Classroom module

For the classroom module; I'm trying to add token support so I may use the certain values from a "course" node in various ways.
Since it doesn't have Token support built-in, I'm trying to add it myself (and later submit a patch).
For whatever reason, I cannot seem to get it to recognize the "course" token values.
I can create the list, but they never translate into their actual values.

IMPORTANT NOTE: "course", "assignment", and "resource" types are NOT node-types in of themselves. They are pseudo-types that can be assigned to node-types already defined in your Drupal installation. (This may be what's causing my trouble, but any help is greatly appreciated).

Here's what I've created thus far:

In classroom.module

This is the general module that defines the "course", "assignment", and "resource" types.

<?php
...
function classroom_token_values($type, &$object = NULL, $options = array()) {
  $tokens = array();
  switch (drupal_strtolower($type)) {

    default:
      return classroom_course_token_values('all', $object, $options);
  }
  return $tokens;
}

function classroom_token_list($type = 'all') {
  $tokens = array();
  switch (drupal_strtolower($type)) {
    default:
      return classroom_course_token_list();
  }
  return $tokens;
}
...
?>

In classroom.courses.inc

This file provides specific support for "course" nodes.

<?php
...

function classroom_course_token_values($type, &$object = NULL, $options = array()) {
  $tokens = array();
  switch (drupal_strtolower($type)) {
    case 'course':
    case 'node':
      $tokens['classroom_course']['continuous-ed'] = $object->classroom_course['unlimitedend'] ? t('Continuous') : t('No');
      $tokens['classroom_course']['open-enrollment'] = $object->classroom_course['open_end_inscription'] ? t('Open Enrollment') : t('No');
      $tokens['classroom_course']['use-grade-pct'] = $object->classroom_course['use_grade_percentages'] ? t('Use grade percentages') : t('No');
      $tokens['classroom_course'] += _classroom_course_token_values_dates('course-start-date', (int)$object->classroom_course['start_t']);
      $tokens['classroom_course'] += _classroom_course_token_values_dates('course-end-date', (int)$object->classroom_course['end_t']);
      $tokens['classroom_course'] += _classroom_course_token_values_dates('registration-start-date', (int)$object->classroom_course['registration_start']);
      $tokens['classroom_course'] += _classroom_course_token_values_dates('registration-end-date', (int)$object->classroom_course['registration_end']);
    break;
    
    case 'all':
      return classroom_course_token_values('course', $object, $options);
    break;

    default:
      return classroom_course_token_values('all', $object, $options);
  }
  return $tokens;
}

function _classroom_course_token_values_dates($fieldname, $objectvalue) {
  $tokens = array();
  $type = "custom";
  $tokens[$fieldname.'-yy'] = format_date($objectvalue, $type, 'y');
  $tokens[$fieldname.'-yyyy'] = format_date($objectvalue, $type, 'Y');
  $tokens[$fieldname.'-month'] = format_date($objectvalue, $type, 'F');
  $tokens[$fieldname.'-mon'] = format_date($objectvalue, $type, 'M');
  $tokens[$fieldname.'-mm'] = format_date($objectvalue, $type, 'm');
  $tokens[$fieldname.'-m'] = format_date($objectvalue, $type, 'n');
  $tokens[$fieldname.'-day'] = format_date($objectvalue, $type, 'l');
  $tokens[$fieldname.'-ddd'] = format_date($objectvalue, $type, 'D');
  $tokens[$fieldname.'-dd'] = format_date($objectvalue, $type, 'd');
  $tokens[$fieldname.'-d'] = format_date($objectvalue, $type, 'j');
  $tokens[$fieldname.'-date'] = format_date($objectvalue, $type, 'c');
  $tokens[$fieldname.'-value'] = $objectvalue;
  return $tokens;
}

function classroom_course_token_list($type = 'all') {
  $tokens = array();
  switch (drupal_strtolower($type)) {
    case 'course':
    case 'node':
      $tokens['classroom_course']['use-grade-pct'] = t("Whether or not the course uses grade percentages.");
      $tokens['classroom_course']['open-enrollment'] = t("Whether or not the course has open enrollment.");
      $tokens['classroom_course']['continuous-ed'] = t("Whether or not the course has no end date.");
    
      $tokens['classroom_course'] += _classroom_course_token_list_dates("course-start-date", "Course start date.");
      $tokens['classroom_course'] += _classroom_course_token_list_dates("course-end-date", "Course end date.");
      $tokens['classroom_course'] += _classroom_course_token_list_dates("registration-start-date", "Course registration start date.");
      $tokens['classroom_course'] += _classroom_course_token_list_dates("registration-end-date", "Course registration end date.");
    break;
    
    case 'all':
      return classroom_course_token_list('course');
    
    default:
      return classroom_course_token_list('all');
  }
  return $tokens;
}

function _classroom_course_token_list_dates($fieldname, $value) {
  $tokens = array();
  $tokens[$fieldname.'-yy'] = t(sprintf("%s date year, two digits", $value));
  $tokens[$fieldname.'-yyyy'] = t(sprintf("%s date year, four digits", $value));
  $tokens[$fieldname.'-month'] = t(sprintf("%s date month, full word", $value));
  $tokens[$fieldname.'-mon'] = t(sprintf("%s date month, abbreviated", $value));
  $tokens[$fieldname.'-mm'] = t(sprintf("%s date month, two digits (zero padded)", $value));
  $tokens[$fieldname.'-m'] = t(sprintf("%s date month, number, no zero padding", $value));
  $tokens[$fieldname.'-day'] = t(sprintf("%s date day, full word", $value));
  $tokens[$fieldname.'-ddd'] = t(sprintf("%s date day, abbreviated", $value));
  $tokens[$fieldname.'-dd'] = t(sprintf("%s date day, two digits (zero padded)", $value));
  $tokens[$fieldname.'-d'] = t(sprintf("%s date day, number, no zero padding", $value));
  $tokens[$fieldname.'-date'] = t(sprintf("%s ISO date (YYYY-MM-DD)", $value));
  $tokens[$fieldname.'-value'] = t(sprintf("%s raw value", $value));
  return $tokens;
}

...

?>