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<?php |
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namespace Dallgoot\Yaml; |
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/** |
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* TODO |
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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 TODO : url to specific online doc |
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*/ |
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final class NodeFactory |
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{ |
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private const JSON_OPTIONS = \JSON_PARTIAL_OUTPUT_ON_ERROR|\JSON_UNESCAPED_SLASHES; |
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final public static function get($nodeString = null, $line = 0):Node |
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{ |
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$nodeTrimmed = ltrim($nodeString); |
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if ($nodeTrimmed === '') { |
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return new NodeBlank($nodeString, $line); |
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} elseif (substr($nodeTrimmed, 0, 3) === '...') { |
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return new NodeDocEnd($nodeString, $line); |
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} elseif (preg_match(Regex::KEY, $nodeTrimmed, $matches)) { |
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return new NodeKey($nodeString, $line, $matches); |
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} else { |
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$first = $nodeTrimmed[0]; |
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$actions = ["-" => 'onHyphen', |
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'>|' => 'onLiteral', |
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'"\'' => 'onQuoted', |
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"#%" => 'onSpecial', |
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"{[" => 'onCompact', |
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":?" => 'onSetElement', |
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'*&!' => 'onNodeAction' |
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]; |
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foreach ($actions as $stringRef => $methodName) { |
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if (is_int(strrpos($stringRef, $first))) { |
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return self::$methodName($nodeString, $line); |
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} |
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} |
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} |
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return new NodeScalar($nodeString, $line); |
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} |
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/** |
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* Return the correct Node Object between NodeComment OR NodeDirective |
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* |
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* @param string $nodeString The node string |
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* @param integer $line The line |
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* |
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* @return Node |
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*/ |
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final private static function onSpecial(string $nodeString, int $line):Node |
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{ |
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return $nodeString[0] === "#" ? new NodeComment($nodeString, $line) : new NodeDirective($nodeString, $line); |
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} |
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/** |
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* Set $node type and value when $nodevalue starts with a quote (simple or double) |
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* |
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* @param string $nodeString The node value |
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* @param int $line The line |
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* |
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* @return Node |
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*/ |
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final private static function onQuoted(string $nodeString, int $line):Node |
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{ |
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$trimmed = trim($nodeString); |
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return Regex::isProperlyQuoted($trimmed) ? new NodeQuoted($trimmed, $line) : new NodeScalar($trimmed, $line); |
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} |
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/** |
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* Set $node type and value when NodeValue starts with a Set characters "?:" |
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* |
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* @param string $nodeString The node value |
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* @param int $line The line |
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* |
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* @return Node |
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*/ |
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final private static function onSetElement(string $nodeString, int $line):Node |
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{ |
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return $nodeString[0] === '?' ? new NodeSetKey($nodeString, $line) : new NodeSetValue($nodeString, $line); |
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} |
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/** |
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* Determines the Node type and value when a compact object/array syntax is found |
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* |
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* @param string $nodeString The value assumed to start with { or [ or characters |
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* @param int $line The line |
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* |
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* @return Node |
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*/ |
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final private static function onCompact(string $nodeString, int $line):Node |
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{ |
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$json = json_decode($nodeString, false, 512, self::JSON_OPTIONS); |
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if (json_last_error() === \JSON_ERROR_NONE) return new NodeJSON($nodeString, $line, $json); |
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elseif (preg_match(Regex::MAPPING, $nodeString)) return new NodeCompactMapping($nodeString, $line); |
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elseif (preg_match(Regex::SEQUENCE, $nodeString)) return new NodeCompactSequence($nodeString, $line); |
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else { |
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return new NodePartial($nodeString, $line); |
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} |
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} |
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/** |
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* Determines Node type and value when an hyphen "-" is found |
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* |
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* @param string $nodeString The node string value |
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* @param int $line The line |
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* |
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* @return Node |
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*/ |
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final private static function onHyphen(string $nodeString, int $line):Node |
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{ |
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if (substr($nodeString, 0, 3) === '---') return new NodeDocStart($nodeString, $line); |
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elseif (preg_match(Regex::ITEM, $nodeString)) return new NodeItem($nodeString, $line); |
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else { |
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return new NodeScalar($nodeString, $line); |
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} |
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} |
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/** |
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* Sets Node type and value according to $nodeString when one of these characters is found : !,&,* |
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* |
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* @param string $nodeString The node value |
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* @param int $line The line |
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* |
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*/ |
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final private static function onNodeAction(string $nodeString, int $line):Node |
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{ |
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if ($nodeString[0] === '!') return new NodeTag($nodeString, $line); |
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elseif ($nodeString[0] === '&') return new NodeRefDef($nodeString, $line); |
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elseif ($nodeString[0] === '*') return new NodeRefCall($nodeString, $line); |
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else { |
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throw new \ParseError("Not a action node !! $nodeString[0]"); |
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} |
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} |
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final private static function onLiteral(string $nodeString, int $line):Node |
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{ |
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if ($nodeString[0] === '>') return new NodeLitFolded($nodeString, $line); |
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elseif ($nodeString[0] === '|') return new NodeLit($nodeString, $line); |
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else { |
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throw new \ParseError("Not a literal node !! $nodeString[0]"); |
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} |
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} |
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} |
dallgoot /
yaml
