Level-label

Convert a Level into its uppercase display label. This helper is useful for formatting, diagnostics, and user-visible output that should mirror the built-in level names.

Interface

pub fn Level::label(self : Level) -> String {}

input

• self : Level - Level value whose display label should be returned.

output

• String - Uppercase label such as TRACE, DEBUG, INFO, WARN, or ERROR.

Explanation

Detailed rules explaining key parameters and behaviors

• The returned strings are uppercase built-in labels.
• This helper is intended for readable output and formatter logic.
• It is separate from priority(), which is for numeric ordering.
• The label reflects the enum variant directly and does not depend on any logger configuration.

How to Use

Here are some specific examples provided.

When Show A Level In Custom Output

When a callback or formatter wants a readable label:

let label = Level::Warn.label()

In this example, label becomes "WARN".

When Build Simple Human-readable Diagnostics

When direct console text should include the level name:

let rec = Record::new(Level::Error, "dispatch failed")
println(rec.level.label())

In this example, the output uses the built-in uppercase severity name.

Error Case

e.g.:

• There is no failure path for valid Level values.

• If code needs numeric ordering rather than display text, label() is the wrong helper.

Notes

1. Use this helper for presentation and diagnostics.

2. Prefer priority() or enabled() for threshold logic.