1: <?php
 2: class Horde_Date_Parser_Locale_Base_Scalar
 3: {
 4:     public $scalarRegex = '/^\d*$/';
 5:     public $dayRegex = '/^\d\d?$/';
 6:     public $monthRegex = '/^\d\d?$/';
 7:     public $yearRegex = '/^([1-9]\d)?\d\d?$/';
 8:     public $timeSignifiers = array('am', 'pm', 'morning', 'afternoon', 'evening', 'night');
 9: 
10:     public function scan($tokens)
11:     {
12:         foreach ($tokens as $i => &$token) {
13:             $postToken = isset($tokens[$i + 1]) ? $tokens[$i + 1]->word : null;
14:             if (!is_null($t = $this->scanForScalars($token, $postToken))) {
15:                 $token->tag('scalar', $t);
16:             }
17:             if (!is_null($t = $this->scanForDays($token, $postToken))) {
18:                 $token->tag('scalar_day', $t);
19:             }
20:             if (!is_null($t = $this->scanForMonths($token, $postToken))) {
21:                 $token->tag('scalar_month', $t);
22:             }
23:             if (!is_null($t = $this->scanForYears($token, $postToken))) {
24:                 $token->tag('scalar_year', $t);
25:             }
26:         }
27:         return $tokens;
28:     }
29: 
30:     public function scanForScalars($token, $postToken)
31:     {
32:         if (preg_match($this->scalarRegex, $token->word)) {
33:             if (!in_array($postToken, $this->timeSignifiers)) {
34:                 return $token->word;
35:             }
36:         }
37:     }
38: 
39:     public function scanForDays($token, $postToken)
40:     {
41:         if (preg_match($this->dayRegex, $token->word)) {
42:             if ($token->word <= 31 && !in_array($postToken, $this->timeSignifiers)) {
43:                 return $token->word;
44:             }
45:         }
46:     }
47: 
48:     public function scanForMonths($token, $postToken)
49:     {
50:         if (preg_match($this->monthRegex, $token->word)) {
51:             if ($token->word <= 12 && !in_array($postToken, $this->timeSignifiers)) {
52:                 return $token->word;
53:             }
54:         }
55:     }
56: 
57:     public function scanForYears($token, $postToken)
58:     {
59:         if (preg_match($this->yearRegex, $token->word)) {
60:             if (!in_array($postToken, $this->timeSignifiers)) {
61:                 return $token->word;
62:             }
63:         }
64:     }
65: 
66: }
67: