<?php

namespace Torchlight\Engine\Support;

use Phiki\Token\Token;

class TokenMerger

{

/**

* @param array<int, Token[]> $lines

* @return array<int, Token[]>

*/

public static function merge(array $lines): array

{

foreach ($lines as $i => $tokens) {

$merged = [];

foreach ($tokens as $token) {

if (! empty($merged)) {

$lastToken = end($merged);

if ($lastToken->scopes === $token->scopes) {

$lastToken->text .= $token->text;

$lastToken->end = $token->end;

continue;

}

}

$merged[] = $token;

}

$lines[$i] = $merged;

}

return $lines;

}

}