graze /
data-flow
| @@ 25-58 (lines=34) @@ | ||
| 22 | /** |
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| 23 | * Apply a flow to each element of a NodeCollection |
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| 24 | */ |
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| 25 | class Each extends AbstractFlow |
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| 26 | { |
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| 27 | /** |
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| 28 | * @var FlowInterface |
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| 29 | */ |
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| 30 | private $flow; |
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| 31 | ||
| 32 | /** |
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| 33 | * Each constructor. |
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| 34 | * |
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| 35 | * @param FlowInterface $flow |
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| 36 | */ |
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| 37 | public function __construct(FlowInterface $flow) |
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| 38 | { |
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| 39 | $this->flow = $flow; |
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| 40 | } |
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| 41 | ||
| 42 | /** |
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| 43 | * @param NodeInterface $node |
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| 44 | * |
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| 45 | * @return NodeCollectionInterface |
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| 46 | */ |
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| 47 | public function flow(NodeInterface $node) |
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| 48 | { |
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| 49 | if (!($node instanceof NodeCollectionInterface)) { |
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| 50 | throw new InvalidArgumentException("The supplied $node is not a NodeCollectionInterface"); |
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| 51 | } |
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| 52 | ||
| 53 | $map = new Map(function (NodeInterface $item) { |
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| 54 | return $this->flow->flow($item); |
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| 55 | }); |
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| 56 | return $map->flow($node); |
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| 57 | } |
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| 58 | } |
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| 59 | ||
| @@ 24-56 (lines=33) @@ | ||
| 21 | /** |
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| 22 | * Apply a callback to each element of a NodeCollection |
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| 23 | */ |
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| 24 | class Map extends AbstractFlow |
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| 25 | { |
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| 26 | /** |
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| 27 | * @var callable |
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| 28 | */ |
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| 29 | private $callback; |
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| 30 | ||
| 31 | /** |
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| 32 | * First constructor. |
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| 33 | * |
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| 34 | * @param callable $callback |
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| 35 | */ |
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| 36 | public function __construct(callable $callback) |
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| 37 | { |
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| 38 | $this->callback = $callback; |
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| 39 | } |
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| 40 | ||
| 41 | /** |
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| 42 | * @param NodeInterface $node |
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| 43 | * |
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| 44 | * @return NodeCollectionInterface |
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| 45 | */ |
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| 46 | public function flow(NodeInterface $node) |
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| 47 | { |
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| 48 | if (!($node instanceof NodeCollectionInterface)) { |
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| 49 | throw new InvalidArgumentException("The supplied $node is not a NodeCollectionInterface"); |
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| 50 | } |
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| 51 | ||
| 52 | $class = get_class($node); |
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| 53 | ||
| 54 | return new $class($node->map($this->callback)); |
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| 55 | } |
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| 56 | } |
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| 57 | ||
