Enum DecorationKind 

#[non_exhaustive]
pub enum DecorationKind {
    Diagnostic {
        severity: Severity,
        message: Arc<str>,
        code: Option<Arc<str>>,
    },
    FindMatch,
    SnippetStop {
        index: u8,
    },
    AutoClosePair,
}

What a tracked range is. The variant carries every distinction the render path, a diagnostics panel, and a future hover need directly — no separate owner-id or filter machinery alongside it.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Diagnostic

A compiler finding. severity, message, and code ride the store so position and content stay reunited in one place; code is the compiler’s diagnostic code.

Fields

severity: Severity

Render color / render-order key.

message: Arc<str>

Human-readable message (shared, cheap to clone across frames).

code: Option<Arc<str>>

The compiler’s diagnostic code, if any (e.g. E0425).

FindMatch

A find/search hit. The find controller re-queries the whole match set on every edit, so a collapsed hit is dropped rather than kept — its empty-range policy is EmptyPolicy::Drop.

SnippetStop

A snippet placeholder stop. Active-ness lives in the range’s Stickiness, not here — the active stop is AlwaysGrows, the rest NeverGrows.

Fields

index: u8

Tab-order index of this stop within its session.

AutoClosePair

The provenance region of an auto-inserted closing pair.

Implementations

impl DecorationKind

pub fn empty_policy(&self) -> EmptyPolicy

Post-commit policy for a range of this kind that has collapsed to empty: FindMatch is re-queried so it drops; everything else keeps (the owner controls its lifetime).

Trait Implementations

impl Clone for DecorationKind

fn clone(&self) -> DecorationKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DecorationKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.