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Introduce oversized-array type to enforce max number of HasOffsetValueType accessory types #1666

merged 1 commit into from Sep 22, 2022


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@rvanvelzen rvanvelzen commented Aug 30, 2022

This is a generalization of e06f6f0 that replaces "too many" HasOffsetValueTypes with an "oversized array" type.

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Hi, did you accidentally tried to implement the same thing as I already did here? :) e06f6f0 Or is this achieving a different optimization in a different place?

Yours might be a bit more precise, because mine simply keeps the last 32 HasOffsetValueTypes, but yours simply attaches a new type. If you agree, feel free to revert my commit and keep only your logic in this PR.

Also, I'd argue this actually doesn't solve phpstan/phpstan#7581 (which is the issue I'm trying to solve in phpstan/phpstan#7666 (but no one actually attempted it yet).

phpstan/phpstan#7581 is about optimizing TypeCombinator::reduceArrays() so that it doesn't compare everything with everything, but does something smarter with the arrays, like putting them into smaller buckets before, or something like that.

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I don't really like the name, but I couldn't come up with something better.

@ondrejmirtes ondrejmirtes merged commit 81de3eb into phpstan:1.8.x Sep 22, 2022
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Thank you!

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