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[CssSelector] Optimize regexs matching simple selectors

This commit is contained in:
Christophe Coevoet 2015-09-21 01:59:10 +02:00
parent da29357d49
commit d5abe0b114
3 changed files with 20 additions and 23 deletions
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15
src/Symfony/Component/CssSelector/Parser/Shortcut/ClassParser.php
View File

@ -33,15 +33,14 @@ class ClassParser implements ParserInterface
{
// Matches an optional namespace, optional element, and required class
// $source = 'test|input.ab6bd_field';
// $matches = array (size=5)
// 0 => string 'test:input.ab6bd_field' (length=22)
// 1 => string 'test:' (length=5)
// 2 => string 'test' (length=4)
// 3 => string 'input' (length=5)
// 4 => string 'ab6bd_field' (length=11)
if (preg_match('/^(([a-z]+)\|)?([\w-]+|\*)?\.([\w-]+)$/i', trim($source), $matches)) {
// $matches = array (size=4)
// 0 => string 'test|input.ab6bd_field' (length=22)
// 1 => string 'test' (length=4)
// 2 => string 'input' (length=5)
// 3 => string 'ab6bd_field' (length=11)
if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+\.([\w-]++)$/i', trim($source), $matches)) {
return array(
new SelectorNode(new ClassNode(new ElementNode($matches[2] ?: null, $matches[3] ?: null), $matches[4])),
new SelectorNode(new ClassNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
);
}

13
src/Symfony/Component/CssSelector/Parser/Shortcut/ElementParser.php
View File

@ -32,13 +32,12 @@ class ElementParser implements ParserInterface
{
// Matches an optional namespace, required element or `*`
// $source = 'testns|testel';
// $matches = array (size=4)
// 0 => string 'testns:testel' (length=13)
// 1 => string 'testns:' (length=7)
// 2 => string 'testns' (length=6)
// 3 => string 'testel' (length=6)
if (preg_match('/^(([a-z]+)\|)?([\w-]+|\*)$/i', trim($source), $matches)) {
return array(new SelectorNode(new ElementNode($matches[2] ?: null, $matches[3])));
// $matches = array (size=3)
// 0 => string 'testns|testel' (length=13)
// 1 => string 'testns' (length=6)
// 2 => string 'testel' (length=6)
if (preg_match('/^(?:([a-z]++)\|)?([\w-]++|\*)$/i', trim($source), $matches)) {
return array(new SelectorNode(new ElementNode($matches[1] ?: null, $matches[2])));
}
return array();

15
src/Symfony/Component/CssSelector/Parser/Shortcut/HashParser.php
View File

@ -33,15 +33,14 @@ class HashParser implements ParserInterface
{
// Matches an optional namespace, optional element, and required id
// $source = 'test|input#ab6bd_field';
// $matches = array (size=5)
// 0 => string 'test:input#ab6bd_field' (length=22)
// 1 => string 'test:' (length=5)
// 2 => string 'test' (length=4)
// 3 => string 'input' (length=5)
// 4 => string 'ab6bd_field' (length=11)
if (preg_match('/^(([a-z]+)\|)?([\w-]+|\*)?#([\w-]+)$/i', trim($source), $matches)) {
// $matches = array (size=4)
// 0 => string 'test|input#ab6bd_field' (length=22)
// 1 => string 'test' (length=4)
// 2 => string 'input' (length=5)
// 3 => string 'ab6bd_field' (length=11)
if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+#([\w-]++)$/i', trim($source), $matches)) {
return array(
new SelectorNode(new HashNode(new ElementNode($matches[2] ?: null, $matches[3] ?: null), $matches[4])),
new SelectorNode(new HashNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
);
}