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| 1 | <?php |
| 2 | |
| 3 | declare( strict_types = 1 ); |
| 4 | |
| 5 | namespace MediaWiki\Extension\Math\WikiTexVC\Nodes; |
| 6 | |
| 7 | use Generator; |
| 8 | use InvalidArgumentException; |
| 9 | |
| 10 | class Matrix extends TexArray { |
| 11 | |
| 12 | /** @var string */ |
| 13 | private $top; |
| 14 | private array $lines = []; |
| 15 | |
| 16 | private ?TexArray $columnSpecs = null; |
| 17 | |
| 18 | private ?string $renderedColumSpecs = null; |
| 19 | private ?array $boarder = null; |
| 20 | |
| 21 | private ?string $alignInfo = null; |
| 22 | |
| 23 | public function __construct( string $top, TexArray $mainarg, ?LengthSpec $rowSpec = null ) { |
| 24 | foreach ( $mainarg->args as $row ) { |
| 25 | if ( !$row instanceof TexArray ) { |
| 26 | throw new InvalidArgumentException( 'Nested arguments have to be type of TexArray' ); |
| 27 | } |
| 28 | $this->lines[] = $row->containsFunc( '\hline' ); |
| 29 | } |
| 30 | if ( $mainarg instanceof Matrix ) { |
| 31 | $this->args = $mainarg->args; |
| 32 | $this->curly = $mainarg->curly; |
| 33 | } else { |
| 34 | parent::__construct( ...$mainarg->args ); |
| 35 | } |
| 36 | $this->top = $top; |
| 37 | if ( $rowSpec && count( $this->args ) ) { |
| 38 | // @phan-suppress-next-line PhanUndeclaredMethod |
| 39 | $this->first()->setRowSpecs( $rowSpec ); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | public function getLines(): array { |
| 44 | return $this->lines; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * @return string |
| 49 | */ |
| 50 | public function getTop(): string { |
| 51 | return $this->top; |
| 52 | } |
| 53 | |
| 54 | public function setTop( string $top ): Matrix { |
| 55 | $this->top = $top; |
| 56 | return $this; |
| 57 | } |
| 58 | |
| 59 | public function getRenderedColumnSpecs(): string { |
| 60 | if ( $this->renderedColumSpecs == null ) { |
| 61 | $this->renderColumnSpecs(); |
| 62 | } |
| 63 | return $this->renderedColumSpecs; |
| 64 | } |
| 65 | |
| 66 | public function setColumnSpecs( TexArray $specs ): Matrix { |
| 67 | $this->columnSpecs = $specs; |
| 68 | $this->renderedColumSpecs = null; |
| 69 | $this->alignInfo = null; |
| 70 | $this->boarder = null; |
| 71 | return $this; |
| 72 | } |
| 73 | |
| 74 | public function hasColumnInfo(): bool { |
| 75 | return $this->getRenderedColumnSpecs() !== ''; |
| 76 | } |
| 77 | |
| 78 | public function getAlignInfo(): string { |
| 79 | if ( $this->alignInfo == null ) { |
| 80 | $this->renderColumnSpecs(); |
| 81 | } |
| 82 | return $this->alignInfo; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * @return TexArray |
| 87 | */ |
| 88 | public function getMainarg(): TexArray { |
| 89 | return $this; |
| 90 | } |
| 91 | |
| 92 | /** @inheritDoc */ |
| 93 | public function containsFunc( $target, $args = null ) { |
| 94 | if ( $args == null ) { |
| 95 | $args = [ |
| 96 | '\\begin{' . $this->top . '}', |
| 97 | '\\end{' . $this->top . '}', |
| 98 | ...$this->args, |
| 99 | ]; |
| 100 | } |
| 101 | return parent::containsFunc( $target, $args ); |
| 102 | } |
| 103 | |
| 104 | /** @inheritDoc */ |
| 105 | public function inCurlies() { |
| 106 | return $this->render(); |
| 107 | } |
| 108 | |
| 109 | /** @inheritDoc */ |
| 110 | public function render() { |
| 111 | $colSpecs = $this->columnSpecs !== null ? $this->columnSpecs->render() : ''; |
| 112 | return '{\\begin{' . $this->top . '}' . $colSpecs . $this->renderMatrix( $this ) . '\\end{' . |
| 113 | $this->top . '}}'; |
| 114 | } |
| 115 | |
| 116 | /** @inheritDoc */ |
| 117 | public function renderMML( $arguments = [], &$state = [] ): string { |
| 118 | return $this->parseToMML( $this->getTop(), $arguments, null ); |
| 119 | } |
| 120 | |
| 121 | private function renderMatrix( Matrix $matrix ): string { |
| 122 | $renderedLines = ''; |
| 123 | for ( $i = 0; $i < count( $matrix->args ); $i++ ) { |
| 124 | $renderedLines .= self::renderLine( $matrix->args[$i] ); |
| 125 | if ( $i < count( $matrix->args ) - 1 ) { |
| 126 | // @phan-suppress-next-line PhanTypeMismatchArgumentSuperType |
| 127 | $renderedLines .= $matrix->renderRowSpec( $matrix->args[$i] ); |
| 128 | } |
| 129 | } |
| 130 | return $renderedLines; |
| 131 | } |
| 132 | |
| 133 | private static function renderLine( TexNode $l ): string { |
| 134 | $mapped = array_map( static function ( $x ){ |
| 135 | return $x->render(); |
| 136 | }, $l->args ); |
| 137 | return implode( '&', $mapped ); |
| 138 | } |
| 139 | |
| 140 | /** @inheritDoc */ |
| 141 | public function extractIdentifiers( $args = null ) { |
| 142 | if ( $args == null ) { |
| 143 | $args = $this->args; |
| 144 | } |
| 145 | |
| 146 | $mapped = array_map( function ( $a ){ |
| 147 | return array_map( function ( $p ){ |
| 148 | return parent::extractIdentifiers( $p->args ); |
| 149 | }, $a->args ); |
| 150 | }, $args ); |
| 151 | |
| 152 | return self::flatDeep( $mapped ); |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * @param array|string $a |
| 157 | * @return array|string |
| 158 | */ |
| 159 | private static function flatDeep( $a ) { |
| 160 | if ( !is_array( $a ) ) { |
| 161 | return $a; |
| 162 | } |
| 163 | |
| 164 | $reduced = array_reduce( $a, [ self::class, 'reduceCallback' ], [] ); |
| 165 | return $reduced; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * @param array $acc |
| 170 | * @param array|string $val |
| 171 | * @return array |
| 172 | */ |
| 173 | private static function reduceCallback( $acc, $val ) { |
| 174 | // Casting to array if output is string, this is required for array_merge function. |
| 175 | $fld = self::flatDeep( $val ); |
| 176 | if ( !is_array( $fld ) ) { |
| 177 | $fld = [ $fld ]; |
| 178 | } |
| 179 | return array_merge( $acc, $fld ); |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * @suppress PhanTypeMismatchReturn |
| 184 | * @return Generator<TexArray> |
| 185 | */ |
| 186 | public function getIterator(): Generator { |
| 187 | return parent::getIterator(); |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * @return void |
| 192 | */ |
| 193 | public function renderColumnSpecs(): void { |
| 194 | $colSpecs = $this->columnSpecs ?? new TexArray(); |
| 195 | $this->renderedColumSpecs = trim( $colSpecs->render(), "{} \n\r\t\v\x00" ); |
| 196 | $align = ''; |
| 197 | $colNo = 0; |
| 198 | $this->boarder = []; |
| 199 | foreach ( str_split( $this->renderedColumSpecs ) as $chr ) { |
| 200 | switch ( $chr ) { |
| 201 | case '|': |
| 202 | $this->boarder[$colNo] = true; |
| 203 | break; |
| 204 | case 'r': |
| 205 | $align .= 'right '; |
| 206 | $colNo++; |
| 207 | break; |
| 208 | case 'l': |
| 209 | $align .= 'left '; |
| 210 | $colNo++; |
| 211 | break; |
| 212 | case 'c': |
| 213 | $colNo++; |
| 214 | $align .= 'center '; |
| 215 | break; |
| 216 | } |
| 217 | } |
| 218 | $this->alignInfo = $align; |
| 219 | } |
| 220 | |
| 221 | public function getBoarder(): array { |
| 222 | if ( $this->boarder == null ) { |
| 223 | $this->renderColumnSpecs(); |
| 224 | } |
| 225 | return $this->boarder; |
| 226 | } |
| 227 | |
| 228 | public function renderRowSpec( TexArray $row ): string { |
| 229 | $rowSpecs = ''; |
| 230 | if ( $row->getRowSpecs() !== null ) { |
| 231 | $rowSpecs = $row->getRowSpecs()->render(); |
| 232 | } |
| 233 | return '\\\\' . $rowSpecs; |
| 234 | } |
| 235 | |
| 236 | } |