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<?php |
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/** |
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* @author Kévin Gomez https://github.com/K-Phoen <[email protected]> |
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*/ |
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namespace PHPSA\Analyzer\Pass\Expression; |
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use PhpParser\Node\Expr; |
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use PHPSA\Analyzer\Helper\DefaultMetadataPassTrait; |
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use PHPSA\Analyzer\Pass\AnalyzerPassInterface; |
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use PHPSA\Context; |
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class ArrayIllegalOffsetType implements AnalyzerPassInterface |
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{ |
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use DefaultMetadataPassTrait; |
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const DESCRIPTION = 'Checks for illegal array key types (for example objects).'; |
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/** |
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* @param Expr\Array_|Expr\Assign $expr |
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* @param Context $context |
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* @return bool |
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*/ |
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public function pass(Expr $expr, Context $context) |
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{ |
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if ($expr instanceof Expr\Array_) { |
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return $this->analyzeArray($expr, $context); |
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} elseif ($expr instanceof Expr\Assign && $expr->var instanceof Expr\ArrayDimFetch) { |
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return $this->analyzeDimensionFetch($expr->var, $context); |
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} |
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} |
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/** |
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* @param Expr\ArrayDimFetch $expr |
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* @param Context $context |
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* |
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* @return bool |
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*/ |
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private function analyzeDimensionFetch(Expr\ArrayDimFetch $expr, Context $context) |
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{ |
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// $array[] |
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if ($expr->dim === null) { |
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return false; |
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} |
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$var = $context->getExpressionCompiler()->compile($expr->var); |
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if ($var->isCorrectValue() && $var->isArray()) { |
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// $array[…] |
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return $this->analyzeExpression($expr->dim, $context); |
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} |
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return false; |
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} |
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/** |
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* @param Expr\Array_ $expr |
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* @param Context $context |
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* |
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* @return bool |
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*/ |
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private function analyzeArray(Expr\Array_ $expr, Context $context) |
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{ |
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$result = false; |
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/** @var Expr\ArrayItem $item */ |
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foreach ($expr->items as $item) { |
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if ($item->key === null) { |
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continue; |
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} |
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$result = $this->analyzeExpression($item->key, $context) || $result; |
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} |
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return $result; |
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} |
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/** |
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* @param Expr $expr |
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* @param Context $context |
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* |
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* @return bool |
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*/ |
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private function analyzeExpression(Expr $expr, Context $context) |
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{ |
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$compiledKey = $context->getExpressionCompiler()->compile($expr); |
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if (!$compiledKey->isTypeKnown() || $compiledKey->isScalar()) { |
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return false; |
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} |
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$keyType = $compiledKey->getTypeName(); |
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if ($expr instanceof Expr\Variable) { |
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$message = sprintf('Illegal array offset type %s for key %s.', $keyType, '$'.$expr->name); |
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} else { |
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$message = sprintf('Illegal array offset type %s.', $keyType); |
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} |
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$context->notice('array.illegal_offset_type', $message, $expr); |
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return true; |
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} |
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/** |
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* @return array |
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*/ |
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public function getRegister() |
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{ |
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return [ |
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Expr\Array_::class, |
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Expr\Assign::class, |
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]; |
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} |
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} |
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ovr /
phpsa
