Enum ValueRejectReason 

#[non_exhaustive]
pub enum ValueRejectReason {
    OverPerOrderCap,
    OverDailyCap,
    NotANumber,
    Infinite,
    Negative,
}

金额拒绝的结构化原因（v1.4.106 codex 0538 F1 P1 SECURITY）

区分 fail-closed validation (NaN / inf / negative) 与 normal cap exceed， 便于 caller 决定是否 audit-log（fail-closed → 高优先级 audit）。display 消息仍是 backward-compat 字符串。

NaN / inf / negative 全归 fail-closed：金融场景不允许这些值流过 限额引擎 —— LLM agent / proto fuzz / unsanitized REST body 任一来源传 f64::NAN 都会让 value > cap + EPSILON 静默 false（NaN compare 总返 false），bypass per-order cap 与 daily counter；负数则把 daily counter 倒减让后续大单通过。三类全 fail-closed 拒。

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.

OverPerOrderCap

单笔超过 max_order_value cap

OverDailyCap

日累计超过 max_daily_value cap

NotANumber

order_value 为 NaN（fail-closed）

Infinite

order_value 为 +inf / -inf（fail-closed）

Negative

order_value 为负数（fail-closed —— 负数会倒减 daily counter）

Implementations

impl ValueRejectReason

pub fn is_fail_closed(&self) -> bool

是否为 fail-closed validation 拒绝（NaN / inf / negative）—— 高优先级 audit

Trait Implementations

impl Clone for ValueRejectReason

fn clone(&self) -> ValueRejectReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValueRejectReason

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

Formats the value using the given formatter.

impl PartialEq for ValueRejectReason

fn eq(&self, other: &ValueRejectReason) -> 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 Eq for ValueRejectReason

impl StructuralPartialEq for ValueRejectReason