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<?php |
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/** |
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* PHP Smart Analysis project 2015-2016 |
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* |
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* @author Patsura Dmitry https://github.com/ovr <[email protected]> |
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*/ |
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namespace PHPSA\Compiler\Expression\Operators\Arithmetical; |
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use PHPSA\CompiledExpression; |
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use PHPSA\Context; |
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use PHPSA\Compiler\Expression; |
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use PHPSA\Compiler\Expression\AbstractExpressionCompiler; |
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class Div extends AbstractExpressionCompiler |
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{ |
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protected $name = 'PhpParser\Node\Expr\BinaryOp\Div'; |
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/** |
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* {expr} / {expr} |
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* |
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* @param \PhpParser\Node\Expr\BinaryOp\Div $expr |
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* @param Context $context |
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* @return CompiledExpression |
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*/ |
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protected function compile($expr, Context $context) |
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{ |
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$left = $context->getExpressionCompiler()->compile($expr->left); |
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$right = $context->getExpressionCompiler()->compile($expr->right); |
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if ($left->isEquals(0)) { |
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$context->notice( |
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'division-zero', |
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sprintf('You are trying to divide from 0: %s/{expr}', $left->getValue()), |
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$expr |
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); |
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} |
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if ($right->isEquals(0)) { |
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$context->notice( |
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'division-zero', |
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sprintf('You are trying to divide by 0: {expr}/%s', $right->getValue()), |
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$expr |
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); |
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return new CompiledExpression(); |
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} |
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switch ($left->getType()) { |
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case CompiledExpression::INTEGER: |
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case CompiledExpression::DOUBLE: |
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case CompiledExpression::BOOLEAN: |
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switch ($right->getType()) { |
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case CompiledExpression::BOOLEAN: |
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/** |
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* Boolean is true since isEquals(0) check did not pass before |
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* {expr}/1 = {expr} |
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*/ |
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3 |
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$context->notice( |
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'division-by-true', |
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'You are trying to divide by true: {expr}/true ~ {expr}/1 = {expr}', |
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$expr |
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); |
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//no break |
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case CompiledExpression::INTEGER: |
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case CompiledExpression::DOUBLE: |
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case CompiledExpression::BOOLEAN: |
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return CompiledExpression::fromZvalValue($left->getValue() / $right->getValue()); |
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} |
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} |
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return new CompiledExpression(); |
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} |
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} |
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ovr /
phpsa
