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@edgarfgp edgarfgp commented May 21, 2024

Follow up: #17173

Records compiles down to a class or struct sharplab.

This PR enforces the new rules on records.

Old rules

  • AttributeTargets.Class
  • AttributeTargets.Interface
  • AttributeTargets.Delegate
  • AttributeTargets.Struct
  • AttributeTargets.Enum

New Rules

  • AttributeTargets.Class
  • AttributeTargets.Struct when using [<Struct>]

Before sharplab

[<AttributeUsage(AttributeTargets.Class)>]
 type ClassTargetAttribute() =
     inherit Attribute()

 [<AttributeUsage(AttributeTargets.Interface)>]
 type InterfaceTargetAttribute() =
     inherit Attribute()

 [<AttributeUsage(AttributeTargets.Struct)>]
 type StructTargetAttribute() =
     inherit Attribute()

 [<InterfaceTarget>] // Does not fail. It should
 [<StructTarget>] // Does not fail. It should
 [<ClassTarget>]
 type Record = { Prop: string }

 [<ClassTarget>] // Does not fail. It should
 [<InterfaceTarget>] // Does not fail. It should
 [<Struct>]
type StructRecord = { Prop: string }

After

[<AttributeUsage(AttributeTargets.Class)>]
 type ClassTargetAttribute() =
     inherit Attribute()

 [<AttributeUsage(AttributeTargets.Interface)>]
 type InterfaceTargetAttribute() =
     inherit Attribute()

 [<AttributeUsage(AttributeTargets.Struct)>]
 type StructTargetAttribute() =
     inherit Attribute()

 [<InterfaceTarget>] // Fails as expected
 [<StructTarget>] // Fails as expected
 [<ClassTarget>]
 type Record = { Prop: string }

 [<ClassTarget>] // Fails as expected
 [<InterfaceTarget>] // Fails as expected
 [<Struct>]
type StructRecord = { Prop: string }

Checklist

  • Test cases added
  • Release notes entry updated

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github-actions bot commented May 21, 2024

❗ Release notes required


✅ Found changes and release notes in following paths:

Change path Release notes path Description
src/FSharp.Core docs/release-notes/.FSharp.Core/8.0.400.md
src/Compiler docs/release-notes/.FSharp.Compiler.Service/8.0.400.md

@edgarfgp edgarfgp closed this May 23, 2024
@edgarfgp edgarfgp reopened this May 23, 2024
@edgarfgp edgarfgp marked this pull request as ready for review June 11, 2024 14:38
@edgarfgp edgarfgp requested a review from a team as a code owner June 11, 2024 14:38
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Ready for review

@psfinaki
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/azp run

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Azure Pipelines successfully started running 2 pipeline(s).

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@T-Gro T-Gro left a comment

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Can you explain the RequireQualifiedAccess reasoning here, maybe even in the comment as part of code?

Is it only a temporary need caused by new compiler + old FSharp.Core combination, eventually to be removed?

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github-actions bot commented Jul 3, 2024

Caution

Repository is on lockdown for maintenance, all merges are on hold.

@edgarfgp edgarfgp closed this Jul 3, 2024
@edgarfgp edgarfgp reopened this Jul 3, 2024
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edgarfgp commented Jul 4, 2024

Can you explain the RequireQualifiedAccess reasoning here, maybe even in the comment as part of code?

Is it only a temporary need caused by new compiler + old FSharp.Core combination, eventually to be removed?

@T-Gro So the check for RequireQualifiedAccess is not needed at all. Turns out that when you use dotnet build on FSharp.Compiler.Service it uses the FSharp.Core nuget as opposed to the project reference and that is why my unit test was failing locally.

Thanks for the review

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Thanks! Appreciate your consistent and meticulous approach.
Do you see the light at the end of the attributes tunnel?

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edgarfgp commented Jul 4, 2024

Thanks! Appreciate your consistent and meticulous approach. Do you see the light at the end of the attributes tunnel?

Yes. I have 2 more PRs and then a RFC

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4 participants