Enum Error 

#[non_exhaustive]
pub enum Error {
    Native(String),
    Layout {
        what: &'static str,
        expected: usize,
        actual: usize,
    },
    FeatureDisabled(&'static str),
    UnknownEnum {
        name: &'static str,
        value: i32,
    },
}

Errors that can cross the binding boundary.

Deliberately small: the C++ library reports “not found” through std::optional, which this binding surfaces as Option rather than as an error.

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.

Native(String)

A std::string* diagnostic from the native side.

Layout

The linked library’s layout disagrees with what this crate was generated against — see math::check_abi.

Fields

what: &'static str

expected: usize

actual: usize

FeatureDisabled(&'static str)

A cargo feature is enabled but the linked library was built without the matching WHITEOUT_ENABLE_*.

UnknownEnum

The native library produced an enum discriminant this crate does not know. Indicates version skew rather than bad input.

Fields

name: &'static str

value: i32

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

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 Error

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Error