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[cxx-interop] Implicitly import Cxx module #60603

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Merged
merged 2 commits into from
Oct 20, 2022
Merged

[cxx-interop] Implicitly import Cxx module #60603

merged 2 commits into from
Oct 20, 2022

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egorzhdan
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This lifts the requirement for the user to explicitly add import Cxx in Swift code that relies on protocols from the Cxx module, such as CxxSequence.

@egorzhdan egorzhdan added the c++ interop Feature: Interoperability with C++ label Aug 17, 2022
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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 8e96abd to 2b4a7ff Compare August 18, 2022 16:07
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@swift-ci please smoke test

@stevapple
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Should we rename it to _Cxx to align with other implicitly imported "standard" libraries?

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@stevapple underscored names are generally used for something the developer wouldn't need to reference directly from Swift code. This module could be referenced directly, for example, if someone needs to provide a utility extension to one of the protocols from Cxx module:

// Util.swift
import Cxx

extension CxxSequence where RawIterator: ... {
  func doSomething() { ... }
}

Note that we don't always implicitly import Cxx, we only do that for C++ modules that are being imported into Swift, so without import Cxx the above snippet wouldn't compile.

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Ah, makes sense👌

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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 75858ca to 6e61fc3 Compare August 24, 2022 18:32
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@swift-ci please smoke test

@egorzhdan egorzhdan requested a review from zoecarver August 24, 2022 18:33
@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 6e61fc3 to 9e84c84 Compare August 25, 2022 12:23
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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 9e84c84 to 106b7b9 Compare August 25, 2022 13:57
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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 106b7b9 to 5322433 Compare August 25, 2022 16:18
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@swift-ci please smoke test

zoecarver
zoecarver approved these changes Aug 25, 2022
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Thanks for fixing all these tests!

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 5322433 to 4f5552b Compare August 31, 2022 13:07
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@swift-ci please smoke test

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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 4f5552b to 4562328 Compare October 17, 2022 13:05
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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 4562328 to ca38af8 Compare October 17, 2022 16:01
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@swift-ci please smoke test

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ktoso commented Oct 18, 2022

Hooray, makes a lot of sense +1

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from ca38af8 to 1918d1d Compare October 18, 2022 11:08
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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from 1918d1d to d0d3c03 Compare October 19, 2022 10:03
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@swift-ci please smoke test

@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from d0d3c03 to cc0a8b1 Compare October 19, 2022 13:03
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@egorzhdan
[cxx-interop] Implicitly import Cxx module
6a88f75 
This lifts the requirement for the user to explicitly add `import Cxx` in Swift code that relies on protocols from the `Cxx` module, such as `CxxSequence`.
@egorzhdan
[cxx-interop] Fix tests that passed -module-name Swift
5a3bb14 
`Swift` is the name of the Swift standard library module. Creating another module with this name breaks assumptions in the compiler and caused these two tests to fail.
@egorzhdan egorzhdan force-pushed the egorzhdan/implicit-cxx branch from cc0a8b1 to 5a3bb14 Compare October 19, 2022 14:01
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@swift-ci please smoke test

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@swift-ci please smoke test macOS

@egorzhdan egorzhdan merged commit 510c9c9 into main Oct 20, 2022
@egorzhdan egorzhdan deleted the egorzhdan/implicit-cxx branch October 20, 2022 14:36
@finagolfin finagolfin mentioned this pull request Nov 2, 2022
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@finagolfin finagolfin mentioned this pull request Jan 1, 2025
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@egorzhdan @stevapple @ktoso @zoecarver