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| 1 | <?php |
| 2 | // phpcs:disable MediaWiki.Commenting.FunctionComment.DefaultNullTypeParam -- T218324, T218816 |
| 3 | declare( strict_types = 1 ); |
| 4 | |
| 5 | namespace Wikimedia\Parsoid\Tokens; |
| 6 | |
| 7 | /** |
| 8 | * Represents a Key-value pair. |
| 9 | */ |
| 10 | class KV implements \JsonSerializable { |
| 11 | /** |
| 12 | * Commonly a string, but where the key might be templated, |
| 13 | * this can be an array of tokens even. |
| 14 | * |
| 15 | * @var string|Token|array<Token|string> |
| 16 | */ |
| 17 | public $k; |
| 18 | |
| 19 | /** @var string|Token|array<Token|string>|KV[] */ |
| 20 | public $v; |
| 21 | |
| 22 | /** Wikitext source offsets */ |
| 23 | public ?KVSourceRange $srcOffsets; |
| 24 | |
| 25 | /** Wikitext source */ |
| 26 | public ?string $ksrc; |
| 27 | |
| 28 | /** Wikitext source */ |
| 29 | public ?string $vsrc; |
| 30 | |
| 31 | /** |
| 32 | * @param string|Token|array<Token|string> $k |
| 33 | * Commonly a string, but where the key might be templated, |
| 34 | * this can be an array of tokens even. |
| 35 | * @param string|Token|array<Token|string>|KV[] $v |
| 36 | * The value: string, token, of an array of tokens |
| 37 | * @param ?KVSourceRange $srcOffsets wikitext source offsets |
| 38 | * @param ?string $ksrc |
| 39 | * @param ?string $vsrc |
| 40 | */ |
| 41 | public function __construct( |
| 42 | $k, $v, ?KVSourceRange $srcOffsets = null, ?string $ksrc = null, |
| 43 | ?string $vsrc = null |
| 44 | ) { |
| 45 | $this->k = $k; |
| 46 | $this->v = $v; |
| 47 | $this->srcOffsets = $srcOffsets; |
| 48 | $this->ksrc = $ksrc; |
| 49 | $this->vsrc = $vsrc; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * BUG: When there are multiple matching attributes, Sanitizer lets the last one win |
| 54 | * whereas this method is letting the first one win. This can introduce subtle bugs! |
| 55 | * |
| 56 | * Lookup a string key in a KV array and return the first matching KV object |
| 57 | * |
| 58 | * @param KV[]|null $kvs |
| 59 | * @param string $key |
| 60 | * @return ?KV |
| 61 | */ |
| 62 | public static function lookupKV( ?array $kvs, string $key ): ?KV { |
| 63 | if ( $kvs === null ) { |
| 64 | return null; |
| 65 | } |
| 66 | |
| 67 | foreach ( $kvs as $kv ) { |
| 68 | // PORT-FIXME: JS trim() will remove non-ASCII spaces (such as NBSP) too, |
| 69 | // while PHP's won't. Does that matter? |
| 70 | if ( is_string( $kv->k ) && trim( $kv->k ) === $key ) { |
| 71 | return $kv; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | return null; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Lookup a string key (first occurrence) in a KV array |
| 80 | * and return the value of the KV object |
| 81 | * |
| 82 | * @param KV[]|null $kvs |
| 83 | * @param string $key |
| 84 | * @return string|Token|array<Token|string>|null |
| 85 | */ |
| 86 | public static function lookup( ?array $kvs, string $key ) { |
| 87 | $kv = self::lookupKV( $kvs, $key ); |
| 88 | // PORT_FIXME: Potential bug lurking here ... if $kv->v is an array |
| 89 | // this will return a copy, which if modified will not reflect |
| 90 | // in the original KV object. |
| 91 | return $kv->v ?? null; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Return the key portion of the KV's source offsets, or else null |
| 96 | * if no source offsets are known. |
| 97 | * @return SourceRange|null |
| 98 | */ |
| 99 | public function keyOffset(): ?SourceRange { |
| 100 | // @phan-suppress-next-line PhanCoalescingNeverNull $this->srcOffsets is nullable |
| 101 | return $this->srcOffsets->key ?? null; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Return the value portion of the KV's source offsets, or else null |
| 106 | * if no source offsets are known. |
| 107 | * @return SourceRange|null |
| 108 | */ |
| 109 | public function valueOffset(): ?SourceRange { |
| 110 | // @phan-suppress-next-line PhanCoalescingNeverNull $this->srcOffsets is nullable |
| 111 | return $this->srcOffsets->value ?? null; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * @inheritDoc |
| 116 | */ |
| 117 | public function jsonSerialize(): array { |
| 118 | $ret = [ "k" => $this->k, "v" => $this->v ]; |
| 119 | if ( $this->srcOffsets ) { |
| 120 | $ret["srcOffsets"] = $this->srcOffsets; |
| 121 | } |
| 122 | if ( isset( $this->ksrc ) ) { |
| 123 | $ret["ksrc"] = $this->ksrc; |
| 124 | } |
| 125 | if ( isset( $this->vsrc ) ) { |
| 126 | $ret["vsrc"] = $this->vsrc; |
| 127 | } |
| 128 | return $ret; |
| 129 | } |
| 130 | } |