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<?php |
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namespace Dallgoot\Yaml; |
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use Dallgoot\Yaml\Nodes\NodeGeneric; |
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use Dallgoot\Yaml\Nodes\Blank; |
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use Dallgoot\Yaml\Nodes\Comment; |
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use Dallgoot\Yaml\Nodes\Directive; |
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use Dallgoot\Yaml\Nodes\Docstart; |
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use Dallgoot\Yaml\Nodes\Item; |
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use Dallgoot\Yaml\Nodes\Key; |
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use Dallgoot\Yaml\Nodes\SetKey; |
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use Dallgoot\Yaml\Nodes\SetValue; |
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use Dallgoot\Yaml\Nodes\Scalar; |
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/** |
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* A collection of Nodes |
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* |
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* @author Stéphane Rebai <[email protected]> |
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* @license Apache 2.0 |
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* @link https://github.com/dallgoot/yaml |
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*/ |
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class NodeList extends \SplDoublyLinkedList |
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{ |
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const MAPPING = 1; |
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const MULTILINE = 2; |
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const SEQUENCE = 4; |
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const SET = 8; |
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public $type; |
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/** |
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* NodeList constructor |
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* |
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* @param NodeGeneric|null $node (optional) a node that will be pushed as first element |
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*/ |
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public function __construct(NodeGeneric $node = null) |
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{ |
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// parent::__construct(); |
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// $this->setIteratorMode(self::IT_MODE_KEEP); |
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if (!is_null($node)) { |
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$this->push($node); |
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} |
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} |
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public function has(string $nodeType):bool |
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{ |
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$tmp = clone $this; |
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$tmp->rewind(); |
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$fqn = __NAMESPACE__."\\Nodes\\$nodeType"; |
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foreach ($tmp as $child) { |
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if ($child instanceof $fqn) return true; |
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} |
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return false; |
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} |
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public function hasContent():bool |
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{ |
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$tmp = clone $this; |
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$tmp->rewind(); |
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foreach ($tmp as $child) { |
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if (!($child instanceof Comment) |
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&& !($child instanceof Directive) |
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&& !($child instanceof Blank) |
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&& !($child instanceof Docstart |
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&& is_null($child->value)) ) return true; |
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} |
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return false; |
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} |
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public function push($node) |
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{ |
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$type = null; |
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if ($node instanceof Item ) $type = self::SEQUENCE; |
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elseif ($node instanceof Key) $type = self::MAPPING; |
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elseif ($node instanceof SetKey |
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|| $node instanceof SetValue) { |
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$type = self::SET; |
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} elseif ($node instanceof Scalar ){ |
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$type = self::MULTILINE; |
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} |
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if (!is_null($type) && $this->checkTypeCoherence($type)) { |
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$this->type = $type; |
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} |
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parent::push($node); |
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} |
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/** |
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* Verify that the estimated type is coherent with this list current $type |
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* |
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* @param int $estimatedType The estimated type |
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* |
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* @return boolean True if coherent, False otherwise |
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* @todo implement invalid cases |
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*/ |
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public function checkTypeCoherence($estimatedType):bool |
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{ |
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// if ($this->type === self::MAPPING) { |
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// if ($estimatedType === self::SEQUENCE) { |
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// throw new \ParseError("Error : no coherence in types", 1); |
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// } |
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// } |
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return (bool) $estimatedType; |
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} |
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public function build(&$parent = null) |
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{ |
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switch ($this->type) { |
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case self::MAPPING: //fall through |
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case self::SET: |
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$collect = $parent ?? new \StdClass; |
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return $this->buildList($collect); |
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case self::SEQUENCE: |
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$collect = $parent ?? []; |
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return $this->buildList($collect); |
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default: |
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$this->filterComment(); |
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return Builder::getScalar($this->buildMultiline()); |
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} |
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} |
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public function buildList(&$collector) |
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{ |
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$this->rewind(); |
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foreach ($this as $child) { |
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$child->build($collector); |
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} |
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return $collector; |
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} |
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public function buildMultiline():string |
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{ |
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$output = ''; |
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$list = clone $this; |
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if ($list->count() > 0) { |
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$list->rewind(); |
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$first = $list->shift(); |
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$output = trim($first->raw); |
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foreach ($list as $child) { |
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if ($child instanceof Scalar) { |
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$separator = isset($output[-1]) && $output[-1] === "\n" ? '' : ' '; |
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$output .= $separator.trim($child->raw); |
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1 |
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} elseif ($child instanceof Blank) { |
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1 |
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$output .= "\n"; |
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} else { |
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$child->build(); |
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} |
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} |
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} |
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return trim($output); |
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} |
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/** |
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* Remove NodeComment and returns a new one |
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* |
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* @return NodeList a new NodeList without NodeComment in it |
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* @todo double check that NodeComment are built |
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*/ |
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public function filterComment():NodeList |
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{ |
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$this->rewind(); |
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$out = new NodeList; |
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foreach ($this as $index => $child) { |
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if ($child instanceof Comment) { |
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// $child->build(); |
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} else { |
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if($child->value instanceof Comment) { |
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// $child->value->build(); |
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// $child->value = null; |
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} elseif($child->value instanceof NodeList) { |
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$child->value = $child->value->filterComment(); |
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} |
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$out->push($child); |
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} |
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} |
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// $this->rewind(); |
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$out->rewind(); |
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return $out; |
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} |
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/** |
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* Provides a slimmer output when using var_dump Note: currently PHP ignores it on SPL types |
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* @todo activate when PHP supports it |
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*/ |
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// public function __debugInfo() |
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// { |
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// return ['type'=> Y::getName($this->type), 'dllist'=> $this->dllist]; |
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// } |
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} |
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dallgoot /
yaml
