Enum LangHintSource 

#[non_exhaustive]
pub enum LangHintSource {
    CallerProvided,
    FixtureExperimental,
    Heuristic,
}

v0.10 Sprint 2 — LanguageHint 信息来源 enum。

caller 必须表明 lang 字符串来自哪类信息 — 影响 audit trail + 可信度判定。 into_lang_str() 决策时按 source × confidence 综合判 fail-closed 退化:

• CallerProvided:caller 明确决策(如用户 locale 设置 / 业务上下文)— 高信任
• FixtureExperimental:fixture / 测试 / release-gate 模式 — 中信任(仅非 production)
• Heuristic:启发式 detect(unicode + 关键词)— 低信任,advisory only

SemVer:#[non_exhaustive] — 未来加 source(如 UserAgent / MlClassifier) 不破。

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.

CallerProvided

caller 显式传入(可信度最高;典型 user locale / 业务上下文)

FixtureExperimental

fixture / 测试 / release-gate 场景(权威源,但仅非 production)

Heuristic

启发式 lang detect(unicode 字符集 + 关键词;仅 advisory,不可作权威决策)

Implementations

impl LangHintSource

pub fn is_trusted(&self) -> bool

该 source 是否本质可信(进 production 决策)。 Heuristic 始终 false(feedback_lang_review_authoritative 约束)。

Trait Implementations

impl Clone for LangHintSource

fn clone(&self) -> LangHintSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LangHintSource

impl Debug for LangHintSource

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

Formats the value using the given formatter.

impl Eq for LangHintSource

impl Hash for LangHintSource

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for LangHintSource

fn eq(&self, other: &LangHintSource) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for LangHintSource