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| 1 | <?php declare( strict_types=1 ); |
| 2 | |
| 3 | namespace SecurityCheckPlugin; |
| 4 | |
| 5 | use ast\Node; |
| 6 | use Phan\Language\Element\FunctionInterface; |
| 7 | |
| 8 | /** |
| 9 | * Value object that represents method links. |
| 10 | * @todo We might store links inside Taintedness, but the memory usage might skyrocket |
| 11 | */ |
| 12 | class MethodLinks { |
| 13 | /** @var LinksSet */ |
| 14 | private $links; |
| 15 | |
| 16 | /** @var self[] */ |
| 17 | private $dimLinks = []; |
| 18 | |
| 19 | /** @var self|null */ |
| 20 | private $unknownDimLinks; |
| 21 | |
| 22 | /** @var LinksSet|null */ |
| 23 | private $keysLinks; |
| 24 | |
| 25 | /** |
| 26 | * @param LinksSet|null $links |
| 27 | */ |
| 28 | public function __construct( LinksSet $links = null ) { |
| 29 | $this->links = $links ?? new LinksSet(); |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @return self |
| 34 | */ |
| 35 | public static function newEmpty(): self { |
| 36 | return new self( new LinksSet ); |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * @note This returns a clone |
| 41 | * @param mixed $dim |
| 42 | * @return self |
| 43 | */ |
| 44 | public function getForDim( $dim ): self { |
| 45 | if ( !is_scalar( $dim ) ) { |
| 46 | return $this->asValueFirstLevel()->withAddedOffset( $dim ); |
| 47 | } |
| 48 | if ( isset( $this->dimLinks[$dim] ) ) { |
| 49 | $ret = clone $this->dimLinks[$dim]; |
| 50 | $ret->mergeWith( $this->unknownDimLinks ?? self::newEmpty() ); |
| 51 | $ret->links->mergeWith( $this->links ); |
| 52 | return $ret->withAddedOffset( $dim ); |
| 53 | } |
| 54 | $ret = $this->unknownDimLinks ? clone $this->unknownDimLinks : self::newEmpty(); |
| 55 | $ret->links->mergeWith( $this->links ); |
| 56 | return $ret->withAddedOffset( $dim ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @return self |
| 61 | */ |
| 62 | public function asValueFirstLevel(): self { |
| 63 | $ret = new self( clone $this->links ); |
| 64 | $ret->mergeWith( $this->unknownDimLinks ?? self::newEmpty() ); |
| 65 | foreach ( $this->dimLinks as $links ) { |
| 66 | $ret->mergeWith( $links ); |
| 67 | } |
| 68 | return $ret; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @return self |
| 73 | */ |
| 74 | public function asKeyForForeach(): self { |
| 75 | if ( $this->keysLinks ) { |
| 76 | $links = $this->keysLinks->asMergedWith( $this->links ); |
| 77 | } else { |
| 78 | $links = $this->links; |
| 79 | } |
| 80 | return new self( $links->asAllMovedToKeys() ); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * @param mixed $dim |
| 85 | * @param MethodLinks $links |
| 86 | */ |
| 87 | public function setAtDim( $dim, self $links ): void { |
| 88 | if ( is_scalar( $dim ) ) { |
| 89 | $this->dimLinks[$dim] = $links; |
| 90 | } else { |
| 91 | $this->unknownDimLinks ??= self::newEmpty(); |
| 92 | $this->unknownDimLinks->mergeWith( $links ); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * @param LinksSet $links |
| 98 | */ |
| 99 | public function addKeysLinks( LinksSet $links ): void { |
| 100 | if ( !$this->keysLinks ) { |
| 101 | $this->keysLinks = $links; |
| 102 | } else { |
| 103 | $this->keysLinks->mergeWith( $links ); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * @return self |
| 109 | */ |
| 110 | public function asCollapsed(): self { |
| 111 | $ret = new self( $this->links ); |
| 112 | foreach ( $this->dimLinks as $links ) { |
| 113 | $ret->mergeWith( $links->asCollapsed() ); |
| 114 | } |
| 115 | if ( $this->unknownDimLinks ) { |
| 116 | $ret->mergeWith( $this->unknownDimLinks->asCollapsed() ); |
| 117 | } |
| 118 | return $ret; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Merge this object with $other, recursively and without creating a copy. |
| 123 | * |
| 124 | * @param self $other |
| 125 | */ |
| 126 | public function mergeWith( self $other ): void { |