Enum OxiNumError 

#[non_exhaustive]
pub enum OxiNumError {
    Parse(Cow<'static, str>),
    Precision(Cow<'static, str>),
    DivByZero,
    Overflow(Cow<'static, str>),
    InvalidRadix(u32),
    Domain(Cow<'static, str>),
}

Errors from OxiNum operations.

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.

Parse(Cow<'static, str>)

Failed to parse a number from a string.

Precision(Cow<'static, str>)

Precision constraint violated.

DivByZero

Division by zero.

Overflow(Cow<'static, str>)

Arithmetic overflow (e.g. result exceeds a primitive range).

InvalidRadix(u32)

Invalid radix for base conversion (must be 2..=36).

Domain(Cow<'static, str>)

Input is outside the domain of the function (e.g. sqrt of a negative).

Implementations

impl OxiNumError

pub fn context(self, ctx: impl AsRef<str>) -> Self

Returns a new error of the same variant with ctx prepended to the message, for message-bearing variants.

For variants without a free-form message (DivByZero, InvalidRadix) the original value is returned unchanged because their Display already conveys the kind precisely.

Examples

use oxinum_core::OxiNumError;

let e = OxiNumError::Parse("bad digit".into()).context("while reading row 4");
assert!(e.to_string().contains("while reading row 4:"));
assert!(e.to_string().contains("bad digit"));

// Variants without a message are returned untouched.
assert_eq!(
    OxiNumError::DivByZero.context("noop"),
    OxiNumError::DivByZero,
);

Trait Implementations

impl Clone for OxiNumError

fn clone(&self) -> OxiNumError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OxiNumError

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

Formats the value using the given formatter.

impl Display for OxiNumError

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

Formats the value using the given formatter.

impl Error for OxiNumError

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 From<OxiNumError> for Error

fn from(e: OxiNumError) -> Self

Converts to this type from the input type.

impl From<ParseNumberError> for OxiNumError

fn from(e: ParseNumberError) -> Self

Converts to this type from the input type.

impl PartialEq for OxiNumError

fn eq(&self, other: &OxiNumError) -> 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 OxiNumError

impl StructuralPartialEq for OxiNumError