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[lldb][windows] add NSDate and FoundationEssentials.Date dataformatters #11948

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[lldb][windows] add NSDate and FoundationEssentials.Date dataformatters #11948

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@charles-zablit charles-zablit commented Dec 5, 2025 •
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This patch adds a dataformatter for FoundationEssentials.Date and NSDate on Windows.

Before

1> Date.now
$R1: FoundationEssentials.Date = {
  _time = 786641176.638381
}
2> NSDate()
$R2: Foundation.NSDate = {
  Foundation.NSObject = {}
  _base = {
    info = 10880
    pad = 0
  }
  _timeIntervalSinceReferenceDate = 786641176.638381
}

After

1> Date.now
$R1: Foundation.Date = 2025-12-05 15:26:16 UTC
2> NSDate()
$R2: NSDate = 2025-12-05 15:26:16 UTC

rdar://155901731

@charles-zablit charles-zablit requested a review from a team as a code owner December 5, 2025 15:27
@charles-zablit charles-zablit self-assigned this Dec 5, 2025
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charles-zablit commented Dec 5, 2025

@swift-ci please test

@charles-zablit charles-zablit force-pushed the charles-zablit/lldb/windows/add-date-dataformatter branch from b5c7671 to 3a44d26 Compare December 5, 2025 16:38
@charles-zablit charles-zablit marked this pull request as draft December 5, 2025 16:38
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charles-zablit commented Dec 5, 2025

@swift-ci please test

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charles-zablit commented Dec 5, 2025

@swift-ci please test

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charles-zablit commented Dec 8, 2025

@swift-ci please test linux

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charles-zablit commented Dec 8, 2025

@swift-ci please test windows

@charles-zablit charles-zablit force-pushed the charles-zablit/lldb/windows/add-date-dataformatter branch from 3a44d26 to 1950598 Compare December 9, 2025 15:31
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charles-zablit commented Dec 9, 2025

@swift-ci please test

@charles-zablit charles-zablit marked this pull request as ready for review December 9, 2025 15:32
@charles-zablit charles-zablit force-pushed the charles-zablit/lldb/windows/add-date-dataformatter branch from 1950598 to 03c590b Compare December 9, 2025 15:40
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charles-zablit commented Dec 9, 2025

@swift-ci please test

@charles-zablit charles-zablit force-pushed the charles-zablit/lldb/windows/add-date-dataformatter branch from 03c590b to d84204e Compare December 9, 2025 17:43
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charles-zablit commented Dec 9, 2025

@swift-ci please test

adrian-prantl
adrian-prantl reviewed Dec 9, 2025
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lldb/source/Plugins/Language/Swift/FoundationValueTypes.cpp Outdated
if (!time_sp)
time_sp = valobj.GetChildAtNamePath(
{g__timeIntervalSinceReferenceDate, "_value"});
#endif
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This is probably not correct. The #idef checks of a property of the platform lldb is running on, but you probably want to do something different based on the target triple. I.e., this should not trigger if you debug a macOS process over the network with lldb.exe.

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I fixed this by removing the #ifdef check. The GetChildAtNamePath call will only succeed on Windows anyways.

felipepiovezan
felipepiovezan reviewed Dec 10, 2025
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lldb/source/Plugins/Language/ObjC/Cocoa.cpp
tm_epoch.tm_sec = 0;
tm_epoch.tm_hour = 0;
tm_epoch.tm_min = 0;
tm_epoch.tm_mon = 0;
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nit: is this diff relevant for the pr?

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@charles-zablit charles-zablit Dec 10, 2025

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No really, I reverted it 👍

@charles-zablit charles-zablit force-pushed the charles-zablit/lldb/windows/add-date-dataformatter branch 2 times, most recently from 0e4153a to 4c57eed Compare December 10, 2025 16:29
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charles-zablit commented Dec 10, 2025

@swift-ci please test

@charles-zablit charles-zablit force-pushed the charles-zablit/lldb/windows/add-date-dataformatter branch from 4c57eed to 0eb0338 Compare December 10, 2025 16:35
charles-zablit
charles-zablit commented Dec 10, 2025
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lldb/source/Plugins/Language/Swift/SwiftLanguage.cpp
"Foundation.Date summary provider", ConstString("Foundation.Date"),
TypeSummaryImpl::Flags(summary_flags).SetDontShowChildren(true));
"Foundation.Date summary provider",
ConstString("Foundation(Essentials)?\\.(NS)?Date"),
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This will match:

  • Foundation.Date
  • FoundationEssentials.Date
  • Foundation.NSDate

This should not clash with the other Foundation.NSDate formatter. The tests should confirm this.

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charles-zablit commented Dec 10, 2025

@swift-ci please test

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