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[SR-13504] [Feature Idea] Support CustomStringConvertible conformance synthesis for foreign enums #55946

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typesanitizer opened this issue Sep 4, 2020 · 0 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself

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Previous ID SR-13504
Radar rdar://68364668
Original Reporter @typesanitizer
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee None
Priority Medium

md5: 16c48f6beb706f52c363cc0c939a1955

Issue Description:

Sometimes you want to print out the case name for a C/ObjC enum (and in the future, C++), but today print will print the type name. You don't get a string for the case name.

Instead we could support conformance synthesis, using some syntax like

extension TheEnum: CustomStringConvertible { } 

This would generate the description method + switch statement without having the user tediously implement it. Or we could generate a table of case names and somehow use that directly.

The naive strategy of generating case names for every imported foreign enum would lead to greater code-size; using explicit conformances would avoid that issue.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself
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