drupol /
phpermutations
| @@ 70-87 (lines=18) @@ | ||
| 67 | /** |
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| 68 | * {@inheritdoc} |
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| 69 | */ |
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| 70 | public function next() |
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| 71 | { |
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| 72 | $length = $this->getLength(); |
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| 73 | $parameters = []; |
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| 74 | ||
| 75 | if ($length < 0) { |
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| 76 | $parameters[] = ['start' => abs($length), 'end' => null]; |
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| 77 | $parameters[] = ['start' => 0, 'end' => abs($length)]; |
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| 78 | } else { |
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| 79 | $parameters[] = ['start' => -1 * $length, 'end' => null]; |
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| 80 | $parameters[] = ['start' => 0, 'end' => $this->datasetCount + $length * -1]; |
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| 81 | } |
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| 82 | ||
| 83 | $this->current = array_merge( |
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| 84 | array_slice($this->current, $parameters[0]['start'], $parameters[0]['end']), |
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| 85 | array_slice($this->current, $parameters[1]['start'], $parameters[1]['end']) |
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| 86 | ); |
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| 87 | } |
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| 88 | ||
| 89 | /** |
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| 90 | * {@inheritdoc} |
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| @@ 92-109 (lines=18) @@ | ||
| 89 | /** |
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| 90 | * {@inheritdoc} |
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| 91 | */ |
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| 92 | public function rewind() |
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| 93 | { |
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| 94 | $length = -1 * $this->getLength(); |
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| 95 | $parameters = []; |
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| 96 | ||
| 97 | if ($length < 0) { |
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| 98 | $parameters[] = ['start' => abs($length), 'end' => null]; |
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| 99 | $parameters[] = ['start' => 0, 'end' => abs($length)]; |
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| 100 | } else { |
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| 101 | $parameters[] = ['start' => -1 * $length, 'end' => null]; |
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| 102 | $parameters[] = ['start' => 0, 'end' => $this->datasetCount + $length * -1]; |
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| 103 | } |
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| 104 | ||
| 105 | $this->current = array_merge( |
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| 106 | array_slice($this->current, $parameters[0]['start'], $parameters[0]['end']), |
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| 107 | array_slice($this->current, $parameters[1]['start'], $parameters[1]['end']) |
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| 108 | ); |
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| 109 | } |
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| 110 | ||
| 111 | /** |
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| 112 | * {@inheritdoc} |
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