Enum ParseDecimalError 

pub enum ParseDecimalError {
    Empty,
    SignOnly,
    LeadingZero,
    OverlongFractional,
    ScientificNotation,
    InvalidChar,
    OutOfRange,
    MissingDigits,
}

Error returned by <I128<SCALE> as FromStr>::from_str when the input string is not a valid canonical decimal literal.

Each variant identifies one specific failure mode so callers can surface a precise diagnostic.

Variants

• Empty: the input is empty after trimming.
• SignOnly: the input is a bare - or + with no digits.
• LeadingZero: the integer part has a redundant leading zero (e.g. 01.5). A bare 0 or 0.x is permitted; 00, 01, and 01.5 are not.
• OverlongFractional: the fractional part has more digits than SCALE, which would silently discard precision.
• ScientificNotation: the input contains a scientific-notation e or E exponent. Callers that need this form must strip the exponent themselves.
• InvalidChar: the input contains a character that is not a digit, sign, or decimal point.
• OutOfRange: the parsed magnitude exceeds I128::MAX or I128::MIN after scaling by 10^SCALE.
• MissingDigits: a decimal point has no digit on one side (e.g. .5 or 5.). The required form is 0.5 or 5.0.

Variants

Empty

Input string is empty.

SignOnly

Input is - or + with no following digits.

LeadingZero

Integer part has a redundant leading zero (e.g. 01.5).

OverlongFractional

Fractional part has more digits than SCALE.

ScientificNotation

Input uses scientific notation (1e3); not accepted.

InvalidChar

Input contains a character that is not a digit, sign, or dot.

OutOfRange

Parsed value exceeds I128::MAX or I128::MIN after scaling.

MissingDigits

Decimal point with no digit on one side (e.g. .5 or 5.).

Trait Implementations

impl Clone for ParseDecimalError

fn clone(&self) -> ParseDecimalError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseDecimalError

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

Formats the value using the given formatter.

impl Display for ParseDecimalError

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

Formats the error as a short human-readable message.

Precision

Strict: all arithmetic is integer-only; result is bit-exact.

impl Error for ParseDecimalError

Available on crate feature std only.

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 Hash for ParseDecimalError

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

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 ParseDecimalError

fn eq(&self, other: &ParseDecimalError) -> 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 Copy for ParseDecimalError

impl Eq for ParseDecimalError

impl StructuralPartialEq for ParseDecimalError