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Add get_expression_type to CheckerPluginInterface #15369

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ikonst
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@ikonst ikonst commented Jun 5, 2023

Fixes #14845.

p.s. In the issue above, I was concerned that adding this method would create an avenue for infinite recursions (if called carelessly), but in fact I haven't managed to induce it, e.g. FunctionSigContext has args but not the call expression itself.

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github-actions bot commented Jun 5, 2023

Diff from mypy_primer, showing the effect of this PR on open source code:

vision (https://github.com/pytorch/vision) got 1.22x slower (29.5s -> 35.9s)

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ikonst commented Jun 5, 2023

@ilevkivskyi wdyt?

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Yeah, I think it is a good solution.

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ikonst commented Jun 9, 2023

Shall we merge?

@ilevkivskyi ilevkivskyi merged commit a108c67 into python:master Jun 11, 2023
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@ikonst Please leave a comment about this in #6617 (mention it is a backwards compatible change).

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Let function signature hook have context of caller
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