italolelis /
collections
| @@ 5-54 (lines=50) @@ | ||
| 2 | ||
| 3 | namespace Collections\Iterator; |
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| 4 | ||
| 5 | class LazyMapIterator implements \Iterator |
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| 6 | { |
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| 7 | /** |
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| 8 | * @var \Iterator |
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| 9 | */ |
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| 10 | private $it; |
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| 11 | ||
| 12 | /** |
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| 13 | * @var callable |
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| 14 | */ |
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| 15 | private $fn; |
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| 16 | ||
| 17 | public function __construct($it, $fn) |
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| 18 | { |
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| 19 | $this->it = $it; |
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| 20 | $this->fn = $fn; |
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| 21 | } |
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| 22 | ||
| 23 | public function __clone() |
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| 24 | { |
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| 25 | $this->it = clone $this->it; |
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| 26 | } |
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| 27 | ||
| 28 | public function rewind() |
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| 29 | { |
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| 30 | $this->it->rewind(); |
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| 31 | } |
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| 32 | ||
| 33 | public function valid() |
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| 34 | { |
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| 35 | return $this->it->valid(); |
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| 36 | } |
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| 37 | ||
| 38 | public function next() |
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| 39 | { |
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| 40 | $this->it->next(); |
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| 41 | } |
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| 42 | ||
| 43 | public function key() |
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| 44 | { |
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| 45 | return $this->it->key(); |
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| 46 | } |
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| 47 | ||
| 48 | public function current() |
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| 49 | { |
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| 50 | $fn = $this->fn; |
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| 51 | ||
| 52 | return $fn($this->it->current()); |
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| 53 | } |
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| 54 | } |
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| 55 | ||
| @@ 7-56 (lines=50) @@ | ||
| 4 | ||
| 5 | use Collections\KeyedIterator; |
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| 6 | ||
| 7 | class LazyMapKeyedIterator implements KeyedIterator |
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| 8 | { |
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| 9 | /** |
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| 10 | * @var KeyedIterator |
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| 11 | */ |
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| 12 | private $it; |
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| 13 | ||
| 14 | /** |
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| 15 | * @var callable |
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| 16 | */ |
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| 17 | private $fn; |
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| 18 | ||
| 19 | public function __construct($it, $fn) |
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| 20 | { |
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| 21 | $this->it = $it; |
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| 22 | $this->fn = $fn; |
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| 23 | } |
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| 24 | ||
| 25 | public function __clone() |
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| 26 | { |
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| 27 | $this->it = clone $this->it; |
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| 28 | } |
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| 29 | ||
| 30 | public function rewind() |
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| 31 | { |
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| 32 | $this->it->rewind(); |
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| 33 | } |
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| 34 | ||
| 35 | public function valid() |
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| 36 | { |
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| 37 | return $this->it->valid(); |
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| 38 | } |
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| 39 | ||
| 40 | public function next() |
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| 41 | { |
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| 42 | $this->it->next(); |
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| 43 | } |
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| 44 | ||
| 45 | public function key() |
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| 46 | { |
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| 47 | return $this->it->key(); |
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| 48 | } |
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| 49 | ||
| 50 | public function current() |
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| 51 | { |
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| 52 | $fn = $this->fn; |
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| 53 | ||
| 54 | return $fn($this->it->current()); |
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| 55 | } |
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| 56 | } |
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| 57 | ||
| @@ 7-56 (lines=50) @@ | ||
| 4 | ||
| 5 | use Collections\KeyedIterator; |
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| 6 | ||
| 7 | class LazyMapWithKeyIterator implements KeyedIterator |
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| 8 | { |
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| 9 | /** |
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| 10 | * @var KeyedIterator |
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| 11 | */ |
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| 12 | private $it; |
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| 13 | ||
| 14 | /** |
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| 15 | * @var callable |
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| 16 | */ |
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| 17 | private $fn; |
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| 18 | ||
| 19 | public function __construct($it, $fn) |
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| 20 | { |
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| 21 | $this->it = $it; |
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| 22 | $this->fn = $fn; |
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| 23 | } |
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| 24 | ||
| 25 | public function __clone() |
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| 26 | { |
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| 27 | $this->it = clone $this->it; |
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| 28 | } |
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| 29 | ||
| 30 | public function rewind() |
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| 31 | { |
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| 32 | $this->it->rewind(); |
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| 33 | } |
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| 34 | ||
| 35 | public function valid() |
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| 36 | { |
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| 37 | return $this->it->valid(); |
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| 38 | } |
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| 39 | ||
| 40 | public function next() |
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| 41 | { |
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| 42 | $this->it->next(); |
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| 43 | } |
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| 44 | ||
| 45 | public function key() |
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| 46 | { |
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| 47 | return $this->it->key(); |
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| 48 | } |
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| 49 | ||
| 50 | public function current() |
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| 51 | { |
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| 52 | $fn = $this->fn; |
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| 53 | ||
| 54 | return $fn($this->it->key(), $this->it->current()); |
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| 55 | } |
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| 56 | } |
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