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Add the is operator to Dafny#153

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khieta merged 10 commits intomainfrom
dafny-is-operator
Nov 16, 2023
Merged

Add the is operator to Dafny#153
khieta merged 10 commits intomainfrom
dafny-is-operator

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@khieta khieta commented Nov 15, 2023

Issue #, if available:

Description of changes:

Add the is operator to Dafny, matching the corresponding implementation in Lean (#138).

Will mark as ready for review once I've tested that it works with #145.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

john-h-kastner-aws and others added 6 commits November 8, 2023 15:47
Generators may generate `is` based on an `enable_is` flag. This is
disabled for differential testing because `is` is not modeled in dafny,
but it is enabled for property tests.
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khieta commented Nov 16, 2023

Marking as ready for review. I ran the DRT targets locally (w/ #155) for a few minutes, and didn't see any failures. Will rely on our nightly fuzzing runs to find more subtle issues.

@khieta khieta marked this pull request as ready for review November 16, 2023 13:56
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@john-h-kastner-aws john-h-kastner-aws left a comment

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looks good

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@cdisselkoen cdisselkoen left a comment

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I didn't look at the proofs/lemmas, but the rest of the changes look reasonable

@khieta khieta merged commit c80bb47 into main Nov 16, 2023
@khieta khieta deleted the dafny-is-operator branch November 16, 2023 17:18
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3 participants