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DQ.php
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DQ.php
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<?php
declare( strict_types = 1 );
namespace MediaWiki\Extension\Math\WikiTexVC\Nodes;
use MediaWiki\Extension\Math\WikiTexVC\MMLmappings\BaseParsing;
use MediaWiki\Extension\Math\WikiTexVC\MMLnodes\MMLmrow;
use MediaWiki\Extension\Math\WikiTexVC\MMLnodes\MMLmsub;
use MediaWiki\Extension\Math\WikiTexVC\MMLnodes\MMLmunder;
use MediaWiki\Extension\Math\WikiTexVC\TexUtil;
class DQ extends TexNode {
/** @var TexNode */
private $base;
/** @var TexNode */
private $down;
public function __construct( TexNode $base, TexNode $down ) {
parent::__construct( $base, $down );
$this->base = $base;
$this->down = $down;
}
/**
* @return TexNode
*/
public function getBase(): TexNode {
return $this->base;
}
/**
* @return TexNode
*/
public function getDown(): TexNode {
return $this->down;
}
/** @inheritDoc */
public function render() {
return $this->base->render() . '_' . $this->down->inCurlies();
}
/** @inheritDoc */
public function renderMML( $arguments = [], &$state = [] ) {
if ( array_key_exists( "limits", $state ) ) {
// A specific DQ case with preceding limits, just invoke the limits parsing manually.
return BaseParsing::limits( $this, $arguments, $state, "" );
}
if ( !$this->isEmpty() ) {
if ( $this->getBase()->containsFunc( "\underbrace" ) ) {
$outer = new MMLmunder();
} else {
$outer = new MMLmsub();
if ( ( $state['styleargs']['displaystle'] ?? 'true' ) === 'true' ) {
$tu = TexUtil::getInstance();
if ( $tu->operator( trim( $this->base->render() ) ) ) {
$outer = new MMLmunder();
}
}
}
// Otherwise use default fallback
$mmlMrow = new MMLmrow();
$inner_state = [ 'styleargs' => $state['styleargs'] ?? [] ];
$baseRendering = $this->base->renderMML( $arguments, $inner_state );
// In cases with empty curly preceding like: "{}_pF_q" or _{1}
if ( trim( $baseRendering ) === "" ) {
$baseRendering = ( new MMLmrow() )->getEmpty();
}
return $outer->encapsulateRaw(
$baseRendering .
$mmlMrow->encapsulateRaw( $this->down->renderMML( $arguments, $state ) ) );
}
return "";
}
/** @inheritDoc */
public function extractIdentifiers( $args = null ) {
$d = $this->down->extractSubscripts();
$b = $this->base->extractIdentifiers();
if ( is_array( $b ) && count( $b ) > 1 ) {
return parent::extractIdentifiers();
}
if ( isset( $b[0] ) && $b[0] === '\'' ) {
return array_merge( $b, $d );
}
if ( isset( $d[0] ) && isset( $b[0] ) ) {
if ( $b[0] === '\\int' ) {
return array_merge( $b, $d );
}
return [ $b[0] . '_{' . $d[0] . '}' ];
}
return parent::extractIdentifiers();
}
/** @inheritDoc */
public function extractSubscripts() {
$d = array_merge( [], $this->down->extractSubscripts() );
$b = $this->base->extractSubscripts();
if ( isset( $b[0] ) && isset( $d[0] ) ) {
return [ $b[0] . '_{' . implode( '', $d ) . '}' ];
}
return parent::extractSubscripts();
}
/** @inheritDoc */
public function getModIdent() {
$d = $this->down->extractSubscripts();
$b = $this->base->getModIdent();
if ( isset( $b[0] ) && $b[0] === '\'' ) {
return [];
}
if ( isset( $d[0] ) && isset( $b[0] ) ) {
return [ $b[0] . '_{' . $d[0] . '}' ];
}
return parent::getModIdent();
}
}

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text/x-php
Expires
Wed, Aug 19, 07:43 (2 w, 2 d ago)
Storage Engine
local-disk
Storage Format
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Storage Handle
f3/42/55725f79aa77510dce17b6c82edd
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DQ.php (3 KB)

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