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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the league/commonmark package. |
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* |
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* (c) Colin O'Dell <[email protected]> |
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* |
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* Additional emphasis processing code based on commonmark-java (https://github.com/atlassian/commonmark-java) |
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* - (c) Atlassian Pty Ltd |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace League\CommonMark\Node\Inline; |
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use League\CommonMark\Node\Node; |
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/** |
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* @internal |
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*/ |
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final class AdjacentTextMerger |
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{ |
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2490 |
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public static function mergeChildNodes(Node $node): void |
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{ |
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// No children or just one child node, no need for merging |
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2490 |
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if ($node->firstChild() === $node->lastChild() || $node->firstChild() === null || $node->lastChild() === null) { |
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1455 |
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return; |
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} |
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/** @psalm-suppress PossiblyNullArgument */ |
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1296 |
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self::mergeTextNodesInclusive($node->firstChild(), $node->lastChild()); |
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1296 |
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} |
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483 |
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public static function mergeTextNodesBetweenExclusive(Node $fromNode, Node $toNode): void |
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{ |
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// No nodes between them |
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483 |
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if ($fromNode === $toNode || $fromNode->next() === $toNode || $fromNode->next() === null || $toNode->previous() === null) { |
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return; |
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} |
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/** @psalm-suppress PossiblyNullArgument */ |
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483 |
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self::mergeTextNodesInclusive($fromNode->next(), $toNode->previous()); |
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483 |
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} |
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private static function mergeTextNodesInclusive(Node $fromNode, Node $toNode): void |
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{ |
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1485 |
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$first = null; |
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$last = null; |
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$node = $fromNode; |
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while ($node !== null) { |
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1485 |
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if ($node instanceof Text) { |
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if ($first === null) { |
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$first = $node; |
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} |
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1461 |
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$last = $node; |
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} else { |
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self::mergeIfNeeded($first, $last); |
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1110 |
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$first = null; |
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1110 |
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$last = null; |
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} |
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1485 |
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if ($node === $toNode) { |
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break; |
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} |
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$node = $node->next(); |
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} |
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1485 |
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self::mergeIfNeeded($first, $last); |
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1485 |
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} |
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1485 |
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private static function mergeIfNeeded(?Text $first, ?Text $last): void |
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{ |
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1485 |
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if ($first === null || $last === null || $first === $last) { |
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// No merging needed |
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1140 |
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return; |
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} |
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516 |
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$s = $first->getLiteral(); |
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$node = $first->next(); |
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$stop = $last->next(); |
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while ($node !== $stop && $node instanceof Text) { |
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$s .= $node->getLiteral(); |
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$unlink = $node; |
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$node = $node->next(); |
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$unlink->detach(); |
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} |
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$first->setLiteral($s); |
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} |
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} |
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thephpleague /
commonmark
