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<?php |
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namespace PHPRealCoverage\Mutator; |
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use PHPRealCoverage\Mutator\Exception\NoMoreMutationsException; |
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class MutationGenerator |
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{ |
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/** |
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* @var MutatableClass |
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*/ |
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private $class; |
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/** |
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* @var int |
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*/ |
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private $curentLine = 0; |
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public function __construct(MutatableClass $class) |
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{ |
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$this->class = $class; |
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} |
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/** |
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* @throws Exception\NoMoreMutationsException |
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* @return MutationCommand[] |
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*/ |
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public function getMutationStack() |
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{ |
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$affectedLines = array(); |
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$mutatableLines = $this->class->getMutatableLines(); |
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for ($i = 0; $i <= $this->curentLine; $i++) { |
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$this->addCommandForLine($i, $mutatableLines, $affectedLines); |
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} |
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$this->curentLine++; |
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return array_reverse($affectedLines); |
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} |
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/** |
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* @param integer $lineNumber |
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* @param MutatableLine[] $mutatableLines |
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* @param $affectedLines |
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*/ |
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public function addCommandForLine($lineNumber, $mutatableLines, &$affectedLines) |
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{ |
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$line = $this->getLine($mutatableLines, $lineNumber); |
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if (!$line->isEnabled()) { |
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$this->increaseMaxLineIfMaxLineIsReached($lineNumber); |
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return; |
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} |
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$affectedLines[] = new DefaultMutationCommand($line); |
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} |
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/** |
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* @param MutatableLine[] $mutatableLines |
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* @param integer $processedLine |
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* @return bool |
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*/ |
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private function maxLineReached($mutatableLines, $processedLine) |
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{ |
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return !isset($mutatableLines[$processedLine]); |
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} |
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/** |
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* @param integer $processedLine |
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*/ |
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private function increaseMaxLineIfMaxLineIsReached($processedLine) |
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{ |
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if ($processedLine == $this->curentLine) { |
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$this->curentLine++; |
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} |
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} |
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/** |
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* @param MutatableLine[] $mutatableLines |
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* @param integer $requestedLine |
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* @return MutatableLine |
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* @throws Exception\NoMoreMutationsException |
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*/ |
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private function getLine($mutatableLines, $requestedLine) |
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{ |
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if ($this->maxLineReached($mutatableLines, $requestedLine)) { |
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throw new NoMoreMutationsException(); |
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} |
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$line = $mutatableLines[$requestedLine]; |
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return $line; |
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} |
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public function getProgress() |
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{ |
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return $this->curentLine / count($this->class->getMutatableLines()); |
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} |
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} |
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