Enum Error 

pub enum Error<SE, PE> {
    ForeignDigest,
    Unstreamable,
    Source(SE),
    Provider(PE),
    Resource(MemoryError),
    Stream(Error),
    OutputWidth {
        expected: usize,
        actual: usize,
    },
}

Execution failure stays independent of completed digest agreement.

Variants

ForeignDigest

A prepared XML method was paired with another provider’s output.

Unstreamable

The provider resolved an identity but cannot stream its digest state.

Source(SE)

Original complete-source acquisition/replay refusal.

Provider(PE)

Original selected-provider failure, including resource/policy refusal.

Resource(MemoryError)

Driver metadata admission failed before callback execution.

Stream(Error)

Existing stream driver refused dispatch. Its location is the virtual input’s start (zero), NOT a physical XML byte or decoded ASN.1 offset; the outer binary error preserves the actual XML value node/generation.

OutputWidth

Backend output contradicts its already resolved fixed width. This is processing failure, not malformed declared bytes or a normal mismatch.

Fields

expected: usize

Fixed resolved width.

actual: usize

Actual backend output width.

Implementations

impl<SE, PE> Error<SE, PE>

pub fn map_source<E>(self, map: impl FnOnce(SE) -> E) -> Error<E, PE>

Translates only acquisition causes, preserving provider, processing and resource classifications without replacing their original locations.

Trait Implementations

impl<SE: Debug, PE: Debug> Debug for Error<SE, PE>

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

Formats the value using the given formatter.