Framework/Mustache
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Store otag/ctag lengths rather than recomputing.

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~15% tokenizing performance boost. 99% reduction in strlen calls :)
This commit is contained in:
Justin Hileman
2014-02-20 09:53:06 -08:00
parent d534b168a0
commit 6215e6b1b1
1 changed files with 41 additions and 26 deletions
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src/Mustache/Tokenizer.php
+41 -26
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@@ -79,6 +79,8 @@ class Mustache_Tokenizer
private $line;
private $otag;
private $ctag;
private $otagLen;
private $ctagLen;
/**
* Scan and tokenize template source.
@@ -93,16 +95,14 @@ class Mustache_Tokenizer
$this->reset();
if ($delimiters = trim($delimiters)) {
list($otag, $ctag) = explode(' ', $delimiters);
$this->otag = $otag;
$this->ctag = $ctag;
$this->setDelimiters($delimiters);
}
$len = strlen($text);
for ($i = 0; $i < $len; $i++) {
switch ($this->state) {
case self::IN_TEXT:
if ($this->tagChange($this->otag, $text, $i)) {
if ($this->tagChange($this->otag, $this->otagLen, $text, $i)) {
$i--;
$this->flushBuffer();
$this->state = self::IN_TAG_TYPE;
@@ -117,7 +117,7 @@ class Mustache_Tokenizer
break;
case self::IN_TAG_TYPE:
$i += strlen($this->otag) - 1;
$i += $this->otagLen - 1;
$char = substr($text, $i + 1, 1);
if (isset(self::$tagTypes[$char])) {
$tag = $char;
@@ -143,18 +143,18 @@ class Mustache_Tokenizer
break;
default:
if ($this->tagChange($this->ctag, $text, $i)) {
if ($this->tagChange($this->ctag, $this->ctagLen, $text, $i)) {
$this->tokens[] = array(
self::TYPE => $this->tagType,
self::NAME => trim($this->buffer),
self::OTAG => $this->otag,
self::CTAG => $this->ctag,
self::LINE => $this->line,
self::INDEX => ($this->tagType == self::T_END_SECTION) ? $this->seenTag - strlen($this->otag) : $i + strlen($this->ctag)
self::INDEX => ($this->tagType == self::T_END_SECTION) ? $this->seenTag - $this->otagLen : $i + $this->ctagLen
);
$this->buffer = '';
$i += strlen($this->ctag) - 1;
$i += $this->ctagLen - 1;
$this->state = self::IN_TEXT;
if ($this->tagType == self::T_UNESCAPED) {
if ($this->ctag == '}}') {
@@ -184,15 +184,17 @@ class Mustache_Tokenizer
*/
private function reset()
{
$this->state = self::IN_TEXT;
$this->tagType = null;
$this->tag = null;
$this->buffer = '';
$this->tokens = array();
$this->seenTag = false;
$this->line = 0;
$this->otag = '{{';
$this->ctag = '}}';
$this->state = self::IN_TEXT;
$this->tagType = null;
$this->tag = null;
$this->buffer = '';
$this->tokens = array();
$this->seenTag = false;
$this->line = 0;
$this->otag = '{{';
$this->ctag = '}}';
$this->otagLen = 2;
$this->ctagLen = 2;
}
/**
@@ -224,9 +226,7 @@ class Mustache_Tokenizer
$close = '='.$this->ctag;
$closeIndex = strpos($text, $close, $index);
list($otag, $ctag) = explode(' ', trim(substr($text, $startIndex, $closeIndex - $startIndex)));
$this->otag = $otag;
$this->ctag = $ctag;
$this->setDelimiters(trim(substr($text, $startIndex, $closeIndex - $startIndex)));
$this->tokens[] = array(
self::TYPE => self::T_DELIM_CHANGE,
@@ -236,6 +236,20 @@ class Mustache_Tokenizer
return $closeIndex + strlen($close) - 1;
}
/**
* Set the current Mustache `otag` and `ctag` delimiters.
*
* @param string $delimiters
*/
private function setDelimiters($delimiters)
{
list($otag, $ctag) = explode(' ', $delimiters);
$this->otag = $otag;
$this->ctag = $ctag;
$this->otagLen = strlen($otag);
$this->ctagLen = strlen($ctag);
}
/**
* Add pragma token.
*
@@ -259,20 +273,21 @@ class Mustache_Tokenizer
self::LINE => 0,
));
return $end + strlen($this->ctag) - 1;
return $end + $this->ctagLen - 1;
}
/**
* Test whether it's time to change tags.
*
* @param string $tag Current tag name
* @param string $text Mustache template source
* @param int $index Current tokenizer index
* @param string $tag Current tag name
* @param int $tagLen Current tag name length
* @param string $text Mustache template source
* @param int $index Current tokenizer index
*
* @return boolean True if this is a closing section tag
*/
private function tagChange($tag, $text, $index)
private function tagChange($tag, $tagLen, $text, $index)
{
return substr($text, $index, strlen($tag)) === $tag;
return substr($text, $index, $tagLen) === $tag;
}
}