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Improve tokenizer regex matching #131

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merged 4 commits into from
Jun 22, 2024
Merged

Improve tokenizer regex matching #131

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24d857e
Use atomic group for regex keywords matching
mvorisek May 31, 2024
7d3ff7b
Build regexes only once
mvorisek May 31, 2024
19bb3ab
Minimize capturing groups in tokenizer regexes
mvorisek Jun 3, 2024
fda3d6e
Build regexes from lists using deduplicated function
mvorisek Jun 2, 2024
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10 changes: 5 additions & 5 deletions src/Tokenizer.php
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Original file line number Diff line number Diff line change
Expand Up @@ -770,24 +770,24 @@ public function __construct()
};

// Set up regular expressions
$this->regexBoundaries = '(' . implode(
$this->regexBoundaries = '(?>' . implode(
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'|',
$this->quoteRegex($this->boundaries),
) . ')';
$this->regexReserved = '(' . implode(
$this->regexReserved = '(?>' . implode(
'|',
$this->quoteRegex($sortByLengthFx($this->reserved)),
) . ')';
$this->regexReservedToplevel = str_replace(' ', '\s+', '(' . implode(
$this->regexReservedToplevel = str_replace(' ', '\s+', '(?>' . implode(
'|',
$this->quoteRegex($sortByLengthFx($this->reservedToplevel)),
) . ')');
$this->regexReservedNewline = str_replace(' ', '\s+', '(' . implode(
$this->regexReservedNewline = str_replace(' ', '\s+', '(?>' . implode(
'|',
$this->quoteRegex($sortByLengthFx($this->reservedNewline)),
) . ')');

$this->regexFunction = '(' . implode('|', $this->quoteRegex($sortByLengthFx($this->functions))) . ')';
$this->regexFunction = '(?>' . implode('|', $this->quoteRegex($sortByLengthFx($this->functions))) . ')';
}

/**
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