support unary-minus on IntegerRangeType #669
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failling test is unrelated. just rebased. |
| if ($type instanceof IntegerRangeType) { | ||
| $negativeRange = $this->resolveType(new Node\Expr\BinaryOp\Mul($node->expr, new LNumber(-1))); | ||
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| if ( $negativeRange instanceof IntegerRangeType && ($negativeRange->getMin() === null || $negativeRange->getMax() === null)) { |
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Actually I was not sure whether multiplication by -1 should have already returned the range as we need it and this if-case actually compensates a bug in the Mul logic?
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I don't know, you tell me :) Feel free to fix more bugs here.
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Do we expect -$b === $b * -1 Given $b = int<min, 5> ?
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Seems like it. Here's a small script I made to generate equations for Wolfram: https://3v4l.org/AUHH7
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btw: the same is true for division: Wolfram
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@ondrejmirtes we can merge here as is. The multiplication bug will be fixed separately |
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Thank you! |
refs phpstan/phpstan#5614