Verzeichnisstruktur phpBB-3.3.15
- Veröffentlicht
- 28.08.2024
So funktioniert es
|
|
Auf das letzte Element klicken. Dies geht jeweils ein Schritt zurück |
Auf das Icon klicken, dies öffnet das Verzeichnis. Nochmal klicken schließt das Verzeichnis. |
|
|
(Beispiel Datei-Icons)
|
Auf das Icon klicken um den Quellcode anzuzeigen |
AbstractOptimizer.php
001 <?php
002
003 /**
004 * @package s9e\TextFormatter
005 * @copyright Copyright (c) 2010-2022 The s9e authors
006 * @license http://www.opensource.org/licenses/mit-license.php The MIT License
007 */
008 namespace s9e\TextFormatter\Configurator\RendererGenerators\PHP;
009
010 abstract class AbstractOptimizer
011 {
012 /**
013 * @var integer Number of tokens
014 */
015 protected $cnt;
016
017 /**
018 * @var integer Current token index
019 */
020 protected $i;
021
022 /**
023 * @var boolean Whether the tokens have been changed
024 */
025 protected $changed;
026
027 /**
028 * @var array Tokens from current source
029 */
030 protected $tokens;
031
032 /**
033 * Optimize the control structures of a script
034 *
035 * Removes brackets in control structures wherever possible. Prevents the generation of EXT_STMT
036 * opcodes where they're not strictly required.
037 *
038 * @param string $php Original code
039 * @return string Optimized code
040 */
041 public function optimize($php)
042 {
043 $this->reset($php);
044 $this->optimizeTokens();
045
046 // Rebuild the source if it has changed
047 if ($this->changed)
048 {
049 $php = $this->serialize();
050 }
051
052 // Free the memory taken up by the tokens
053 unset($this->tokens);
054
055 return $php;
056 }
057
058 /**
059 * Optimize the stored tokens
060 *
061 * @return void
062 */
063 abstract protected function optimizeTokens();
064
065 /**
066 * Reset the internal state of this optimizer
067 *
068 * @param string $php PHP source
069 * @return void
070 */
071 protected function reset($php)
072 {
073 $this->tokens = token_get_all('<?php ' . $php);
074 $this->i = 0;
075 $this->cnt = count($this->tokens);
076 $this->changed = false;
077 }
078
079 /**
080 * Serialize the tokens back to source
081 *
082 * @return string
083 */
084 protected function serialize()
085 {
086 // Remove the first token, which should be T_OPEN_TAG, aka "<?php"
087 unset($this->tokens[0]);
088
089 $php = '';
090 foreach ($this->tokens as $token)
091 {
092 $php .= (is_string($token)) ? $token : $token[1];
093 }
094
095 return $php;
096 }
097
098 /**
099 * Move the internal cursor until it reaches given string
100 *
101 * @param string $str String to reach
102 * @return void
103 */
104 protected function skipToString($str)
105 {
106 while (++$this->i < $this->cnt && $this->tokens[$this->i] !== $str);
107 }
108
109 /**
110 * Skip all whitespace
111 *
112 * @return void
113 */
114 protected function skipWhitespace()
115 {
116 while (++$this->i < $this->cnt && $this->tokens[$this->i][0] === T_WHITESPACE);
117 }
118
119 /**
120 * Remove one tab of indentation off a range of PHP tokens
121 *
122 * @param integer $start Index of the first token to unindent
123 * @param integer $end Index of the last token to unindent
124 * @return void
125 */
126 protected function unindentBlock($start, $end)
127 {
128 $this->i = $start;
129 do
130 {
131 if ($this->tokens[$this->i][0] === T_WHITESPACE || $this->tokens[$this->i][0] === T_DOC_COMMENT)
132 {
133 $this->tokens[$this->i][1] = preg_replace("/^\t/m", '', $this->tokens[$this->i][1]);
134 }
135 }
136 while (++$this->i <= $end);
137 }
138 }