1: <?php
 2: class Horde_Date_Parser_Handler
 3: {
 4:     public $pattern;
 5:     public $handlerMethod;
 6: 
 7:     public function __construct($pattern, $handlerMethod)
 8:     {
 9:         $this->pattern = $pattern;
10:         $this->handlerMethod = $handlerMethod;
11:     }
12: 
13:     public function match($tokens, $definitions)
14:     {
15:         $tokenIndex = 0;
16:         foreach ($this->pattern as $name) {
17:             $optional = substr($name, -1) == '?';
18:             if ($optional) { $name = rtrim($name, '?'); }
19: 
20:             $tag = substr($name, 0, 1) == ':';
21:             if ($tag) {
22:                 $name = substr($name, 1);
23:                 //match = tokens[token_index] && !tokens[token_index].tags.select { |o| o.kind_of?(klass) }.empty?
24:                 $match = isset($tokens[$tokenIndex]) && $tokens[$tokenIndex]->getTag($name);
25:                 if (!$match && !$optional) { return false; }
26:                 if ($match) { $tokenIndex++; continue; }
27:                 if (!$match && $optional) { continue; }
28:             } else {
29:                 if ($optional && $tokenIndex == count($tokens)) { return true; }
30:                 if (!isset($definitions[$name])) {
31:                     throw new Horde_Date_Parser_Exception("Invalid subset $name specified");
32:                 }
33:                 $subHandlers = $definitions[$name];
34:                 foreach ($subHandlers as $subHandler) {
35:                     if ($subHandler->match(array_slice($tokens, $tokenIndex), $definitions)) {
36:                         return true;
37:                     }
38:                 }
39:                 return false;
40:             }
41:         }
42: 
43:         if ($tokenIndex != count($tokens)) { return false; }
44:         return true;
45:     }
46: 
47: }
48: