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LazyAttributes.php
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LazyAttributes.php
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<?php
namespace Wikimedia\RemexHtml\Tokenizer;
/**
* An Attributes implementation which defers interpretation of regex match
* results until the caller requires them.
*
* This should not be directly instantiated outside of Tokenizer.
*/
class LazyAttributes implements Attributes {
/** @var callable */
private $interpreter;
/** @var mixed */
private $data;
/** @var string[] */
private $attributes;
/** @var Attribute[] */
private $attrObjects;
public function __construct( $data, callable $interpreter ) {
$this->interpreter = $interpreter;
$this->data = $data;
}
/**
* Initialize the attributes array
*/
private function init() {
if ( $this->attributes === null ) {
$func = $this->interpreter;
$this->attributes = $func( $this->data );
// @phan-suppress-next-line PhanTypeMismatchPropertyProbablyReal
$this->interpreter = null;
$this->data = null;
}
}
public function offsetExists( $offset ): bool {
if ( $this->attributes === null ) {
$this->init();
}
return isset( $this->attributes[$offset] );
}
public function &offsetGet( $offset ): string {
if ( $this->attributes === null ) {
$this->init();
}
return $this->attributes[$offset];
}
public function offsetSet( $offset, $value ): void {
if ( $this->attributes === null ) {
$this->init();
}
$this->attributes[$offset] = $value;
if ( $this->attrObjects !== null ) {
$this->attrObjects[$offset] = new Attribute( $offset, null, null, $offset, $value );
}
}
public function offsetUnset( $offset ): void {
if ( $this->attributes === null ) {
$this->init();
}
unset( $this->attributes[$offset] );
unset( $this->attrObjects[$offset] );
}
public function getValues() {
if ( $this->attributes === null ) {
$this->init();
}
return $this->attributes;
}
public function getObjects() {
if ( $this->attrObjects === null ) {
if ( $this->attributes === null ) {
$this->init();
}
$result = [];
foreach ( $this->attributes as $name => $value ) {
$result[$name] = new Attribute( $name, null, null, $name, $value );
}
$this->attrObjects = $result;
}
return $this->attrObjects;
}
public function count(): int {
if ( $this->attributes === null ) {
return count( $this->data );
}
return count( $this->attributes );
}
public function getIterator(): \ArrayIterator {
if ( $this->attributes === null ) {
$this->init();
}
return new \ArrayIterator( $this->attributes );
}
public function merge( Attributes $other ) {
if ( $this->attributes === null ) {
$this->init();
}
foreach ( $other as $name => $value ) {
if ( !isset( $this->attributes[$name] ) ) {
$this->attributes[$name] = $value;
}
}
}
public function clone() {
return $this;
}
}

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text/x-php
Expires
Sat, May 16, 20:53 (1 d, 12 h)
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LazyAttributes.php (2 KB)

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