Enum InvalidValueReason 

pub enum InvalidValueReason {
    BlankRejected,
    InvalidSyntax {
        expected: &'static str,
    },
    OutOfRange,
    PrecisionLoss,
    NonFinite,
    InvalidBoolean,
    NegativeDuration,
    UnsupportedDurationUnit,
    Serialization {
        format: DataFormat,
    },
    Deserialization {
        format: DataFormat,
    },
}

Stable reason an otherwise supported conversion rejected its source value.

Reasons contain only structural context such as an expected grammar or data format. They never contain the original source value. This keeps matching predictable for callers and avoids accidental disclosure in logs.

Variants

BlankRejected

A blank string is forbidden by the active policy.

InvalidSyntax

The source text does not match the target syntax.

Fields

expected: &'static str

Stable description of the accepted syntax.

OutOfRange

The source value is outside the target range.

PrecisionLoss

An exact conversion would lose information.

NonFinite

A non-finite floating-point value is not accepted.

InvalidBoolean

The value is invalid under the active boolean policy.

NegativeDuration

A negative value cannot represent a duration.

UnsupportedDurationUnit

The duration suffix is not supported.

Serialization

Serialization to a structured format failed.

Fields

format: DataFormat

Format whose serialization failed.

Deserialization

Deserialization from a structured format failed.

Fields

format: DataFormat

Format whose deserialization failed.

Trait Implementations

impl Clone for InvalidValueReason

fn clone(&self) -> InvalidValueReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InvalidValueReason

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

Formats the value using the given formatter.

impl Display for InvalidValueReason

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

Formats the value using the given formatter.

impl Eq for InvalidValueReason

impl Error for InvalidValueReason

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for InvalidValueReason

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for InvalidValueReason