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Use trait for labels instead of TypeId (#5270)

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Micha Reiser 2023-06-21 23:26:09 +02:00 • committed by GitHub
parent 1eccbbb60e
commit 3d7411bfaf
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2 changed files with 48 additions and 25 deletions
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27
crates/ruff_formatter/src/builders.rs
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@ -528,7 +528,22 @@ impl<Context> Format<Context> for LineSuffixBoundary {
/// use ruff_formatter::prelude::*;
/// use ruff_formatter::{format, write, LineWidth};
///
/// enum SomeLabelId {}
/// #[derive(Debug, Copy, Clone)]
/// enum MyLabels {
/// Main
/// }
///
/// impl tag::LabelDefinition for MyLabels {
/// fn value(&self) -> u64 {
/// *self as u64
/// }
///
/// fn name(&self) -> &'static str {
/// match self {
/// Self::Main => "Main"
/// }
/// }
/// }
///
/// # fn main() -> FormatResult<()> {
/// let formatted = format!(
@ -537,24 +552,24 @@ impl<Context> Format<Context> for LineSuffixBoundary {
/// let mut recording = f.start_recording();
/// write!(recording, [
/// labelled(
/// LabelId::of::<SomeLabelId>(),
/// LabelId::of(MyLabels::Main),
/// &text("'I have a label'")
/// )
/// ])?;
///
/// let recorded = recording.stop();
///
/// let is_labelled = recorded.first().map_or(false, |element| element.has_label(LabelId::of::<SomeLabelId>()));
/// let is_labelled = recorded.first().map_or(false, |element| element.has_label(LabelId::of(MyLabels::Main)));
///
/// if is_labelled {
/// write!(f, [text(" has label SomeLabelId")])
/// write!(f, [text(" has label `Main`")])
/// } else {
/// write!(f, [text(" doesn't have label SomeLabelId")])
/// write!(f, [text(" doesn't have label `Main`")])
/// }
/// })]
/// )?;
///
/// assert_eq!("'I have a label' has label SomeLabelId", formatted.print()?.as_code());
/// assert_eq!("'I have a label' has label `Main`", formatted.print()?.as_code());
/// # Ok(())
/// # }
/// ```