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<?php |
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declare(strict_types=1); |
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4
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5
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namespace Version\Constraint\Parser; |
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6
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7
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use Version\Constraint\ConstraintInterface; |
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use Version\Constraint\Constraint; |
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use Version\Version; |
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use Version\Exception\InvalidConstraintStringException; |
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use Version\Exception\ExceptionInterface; |
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/** |
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* @author Nikola Posa <[email protected]> |
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*/ |
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abstract class AbstractParser implements ParserInterface |
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{ |
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/** |
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* @var string |
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*/ |
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protected $constraintString; |
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12 |
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public function parse(string $constraintString) : ConstraintInterface |
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{ |
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$constraintString = trim($constraintString); |
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if ('' === $constraintString) { |
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1 |
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throw InvalidConstraintStringException::forEmptyConstraintString(); |
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} |
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11 |
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$this->constraintString = $constraintString; |
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return $this->doParse(); |
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} |
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abstract protected function doParse() : ConstraintInterface; |
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4 |
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protected function error() : void |
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{ |
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throw InvalidConstraintStringException::forConstraintString($this->constraintString); |
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} |
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protected function buildConstraintFromStringUnit(string $constraintStringUnit) : ConstraintInterface |
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{ |
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[$operator, $operandString] = array_values($this->parseConstraintStringUnit($constraintStringUnit)); |
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46
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47
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11 |
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if (empty($operandString)) { |
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1 |
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$this->error(); |
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} |
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try { |
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return Constraint::fromProperties( |
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$operator ?: Constraint::OPERATOR_EQ, |
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Version::fromString($operandString) |
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); |
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2 |
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} catch (ExceptionInterface $ex) { |
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2 |
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$this->error(); |
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} |
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} |
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61
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protected function parseConstraintStringUnit(string $constraintStringUnit) : array |
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{ |
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$i = 0; |
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while (isset($constraintStringUnit[$i]) && !ctype_digit($constraintStringUnit[$i])) { |
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10 |
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$i++; |
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} |
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68
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$operator = substr($constraintStringUnit, 0, $i); |
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$operand = substr($constraintStringUnit, $i); |
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return [ |
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'operator' => $operator, |
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'operand' => $operand, |
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]; |
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} |
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} |
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nikolaposa /
version
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.