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Add Convert Bool to enum code action #2518

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Add Convert Bool to enum code action#2518
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@Tabonx
Tabonx
opened on Feb 28, 2026

Description

Replace a boolean variable/parameter with a two-case enum for better readability.

Before:

func configure(animated: Bool) {
    if animated {
        fadeIn()
    } else {
        show()
    }
}

configure(animated: true)

After:

enum AnimationStyle {
    case animated
    case immediate
}

func configure(animation: AnimationStyle) {
    if animation == .animated {
        fadeIn()
    } else {
        show()
    }
}

configure(animation: .animated)

See also: rust-analyzer convert_bool_to_enum

Activity

  1. Tabonx
    added the
    Feature
    issue type on Feb 28, 2026
  2. ahoppen
    added
    code actionCode action provided by LSP
    on Mar 2, 2026

  3. ahoppen commented on Mar 2, 2026

    @ahoppen
    ahoppen
    on Mar 2, 2026
    Member

    We’ll need to design the user interaction to name the enum and the cases as I don’t think there’s any LSP way of doing this right now. Ideally, we’d be able to use LSP snippets here that bind multiple locations to the same placeholder but I think code actions don’t support snippets…

    We should be able to find all locations where the function is called based on the semantic index but finding the parameter index would likely require swiftlang/swift-syntax#2047.

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