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FQ.php
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FQ.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\MMLmstyle;
use MediaWiki\Extension\Math\WikiTexVC\MMLnodes\MMLmsubsup;
use MediaWiki\Extension\Math\WikiTexVC\MMLnodes\MMLmunderover;
use MediaWiki\Extension\Math\WikiTexVC\TexUtil;
class FQ extends TexNode {
/** @var TexNode */
private $base;
/** @var TexNode */
private $up;
/** @var TexNode */
private $down;
public function __construct( TexNode $base, TexNode $down, TexNode $up ) {
parent::__construct( $base, $down, $up );
$this->base = $base;
$this->up = $up;
$this->down = $down;
}
/**
* @return TexNode
*/
public function getBase(): TexNode {
return $this->base;
}
/**
* @return TexNode
*/
public function getUp(): TexNode {
return $this->up;
}
/**
* @return TexNode
*/
public function getDown(): TexNode {
return $this->down;
}
/** @inheritDoc */
public function render() {
return $this->base->render() . '_' . $this->down->inCurlies() . '^' . $this->up->inCurlies();
}
/** @inheritDoc */
public function renderMML( $arguments = [], &$state = [] ) {
if ( array_key_exists( "limits", $state ) ) {
// A specific FQ case with preceding limits, just invoke the limits parsing manually.
return BaseParsing::limits( $this, $arguments, $state, "" );
}
$base = $this->getBase();
if ( $base->getLength() == 0 && !$base->isCurly() ) {
// this happens when FQ is located in Sideset (is this a common parsing way?)
$mrow = new MMLmrow();
return $mrow->encapsulateRaw( $this->getDown()->renderMML( [], $state ) ) .
$mrow->encapsulateRaw( $this->getUp()->renderMML( [], $state ) );
}
$melement = new MMLmsubsup();
// tbd check for more such cases like TexUtilTest 317
if ( $base instanceof Literal ) {
$litArg = trim( $base->getArgs()[0] );
$tu = TexUtil::getInstance();
// "sum", "bigcap", "bigcup", "prod" ... all are nullary macros.
if ( $tu->nullary_macro( $litArg ) &&
!$tu->is_literal( $litArg ) &&
// by default (inline-displaystyle large operators should be used)
( $state['styleargs']['displaystyle'] ?? 'true' ) === 'true'
) {
$melement = new MMLmunderover();
}
}
$mrow = new MMLmrow();
$emptyMrow = "";
// In cases with empty curly preceding like: "{}_1^2\!\Omega_3^4"
if ( $base->isCurly() && $base->isEmpty() ) {
$emptyMrow = $mrow->getEmpty();
}
// This seems to be the common case
$inner = $melement->encapsulateRaw(
$emptyMrow .
$base->renderMML( [], $state ) .
$mrow->encapsulateRaw( $this->getDown()->renderMML( $arguments, $state ) ) .
$mrow->encapsulateRaw( $this->getUp()->renderMML( $arguments, $state ) ) );
if ( $melement instanceof MMLmunderover ) {
$args = $state['styleargs'] ?? [ "displaystyle" => "true", "scriptlevel" => 0 ];
$style = new MMLmstyle( "", $args );
return $style->encapsulateRaw( $inner );
}
return $inner;
}
}

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text/x-php
Expires
Tue, Aug 18, 19:01 (2 w, 6 d ago)
Storage Engine
local-disk
Storage Format
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Storage Handle
52/1e/a482548dfd3f6bb28a7e5ad336a3
Default Alt Text
FQ.php (3 KB)

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