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<?php |
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2
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/** |
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* parser for PHP serialized float number |
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4
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*/ |
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namespace xKerman\Restricted; |
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7
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/** |
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* Parser for PHP serialized float number |
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9
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* |
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* format: http://php.net/manual/en/language.types.float.php |
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11
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*/ |
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class FloatParser implements ParserInterface |
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{ |
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/** |
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* parse given `$source` as PHP serialized float number |
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* |
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* @param Source $source parser input |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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29 |
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public function parse(Source $source) |
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{ |
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$source->consume('d:'); |
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if ($source->peek() === 'N') { |
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1 |
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return $this->parseNan($source); |
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} |
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29
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25 |
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$parser = new OptionalSignParser(); |
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list($sign, $source) = $parser->parse($source); |
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if ($source->peek() === 'I') { |
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return $this->parseInf($source, $sign); |
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} |
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36
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$num = $source->match('/\G((?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+|[0-9]+)(?:[eE][+-]?[0-9]+)?);/'); |
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return array(floatval($sign . $num), $source); |
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} |
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/** |
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* parse given `$source` as NAN |
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* |
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* @param Source $source input |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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1 |
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private function parseNan($source) |
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{ |
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1 |
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$source->consume('NAN;'); |
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1 |
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return array(NAN, $source); |
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} |
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/** |
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* parse given `$source` as INF / -INF |
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* |
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* @param Source $source input |
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* @param string $sign '-', '+' or '' |
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* @return array |
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* @throws UnserializeFailedException |
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*/ |
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3 |
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private function parseInf($source, $sign) |
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{ |
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3 |
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if (!in_array($sign, array('', '-'), true)) { |
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1 |
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return $source->triggerError(); |
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} |
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67
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2 |
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$source->consume('INF;'); |
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69
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2 |
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if ($sign === '-') { |
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1 |
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return array(-INF, $source); |
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} |
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1 |
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return array(INF, $source); |
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} |
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} |
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xKerman /
restricted-unserialize
