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| 1 | <?php |
| 2 | |
| 3 | declare( strict_types = 1 ); |
| 4 | |
| 5 | namespace MediaWiki\Extension\Math\WikiTexVC\Nodes; |
| 6 | |
| 7 | class Declh extends TexNode { |
| 8 | |
| 9 | /** @var string */ |
| 10 | private $fname; |
| 11 | /** @var TexArray */ |
| 12 | private $arg; |
| 13 | |
| 14 | public function __construct( string $fname, TexArray $arg ) { |
| 15 | parent::__construct( $fname, $arg ); |
| 16 | $this->fname = $fname; |
| 17 | $this->arg = $arg; |
| 18 | } |
| 19 | |
| 20 | /** |
| 21 | * @return string |
| 22 | */ |
| 23 | public function getFname(): string { |
| 24 | return $this->fname; |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * @return TexArray |
| 29 | */ |
| 30 | public function getArg(): TexArray { |
| 31 | return $this->arg; |
| 32 | } |
| 33 | |
| 34 | public function inCurlies() { |
| 35 | return $this->render(); |
| 36 | } |
| 37 | |
| 38 | public function render() { |
| 39 | return '{' . $this->fname . ' ' . $this->arg->inCurlies() . '}'; |
| 40 | } |
| 41 | |
| 42 | public function renderMML( $arguments = [], $state = [] ) { |
| 43 | return $this->parseToMML( $this->fname, $arguments, null ); |
| 44 | } |
| 45 | |
| 46 | public function extractIdentifiers( $args = null ) { |
| 47 | if ( $args == null ) { |
| 48 | $args = [ $this->arg ]; |
| 49 | } |
| 50 | |
| 51 | $identifier = parent::extractIdentifiers( $args ); |
| 52 | if ( isset( $identifier[0] ) ) { |
| 53 | return [ implode( '', $identifier ) ]; |
| 54 | } |
| 55 | return $identifier; |
| 56 | } |
| 57 | |
| 58 | public function extractSubscripts() { |
| 59 | $f = $this->fname; |
| 60 | // @see |
| 61 | // http://tex.stackexchange.com/questions/98406/which-command-should-i-use-for-textual-subscripts-in-math-mode |
| 62 | // cf https://phabricator.wikimedia.org/T56818 a is always RM |
| 63 | // for f there are only four cases |
| 64 | switch ( $f ) { |
| 65 | case '\\rm': |
| 66 | $f = '\\mathrm'; |
| 67 | break; |
| 68 | case '\\it': |
| 69 | $f = '\\mathit'; |
| 70 | break; |
| 71 | case '\\cal': |
| 72 | $f = '\\mathcal'; |
| 73 | break; |
| 74 | case '\\bf': |
| 75 | $f = '\\mathbf'; |
| 76 | } |
| 77 | |
| 78 | $x = $this->arg->extractSubscripts(); |
| 79 | if ( isset( $x[0] ) ) { |
| 80 | return [ $f . '{' . $x . '}' ]; |
| 81 | } |
| 82 | return parent::extractSubscripts(); |
| 83 | } |
| 84 | |
| 85 | } |