Enum SemanticAdTransformError 

pub enum SemanticAdTransformError {
    ActivityArity {
        role: SemanticTransformRole,
        field: &'static str,
        expected: usize,
        actual: usize,
    },
    UnsupportedCore {
        role: SemanticTransformRole,
        op: String,
    },
    UnsupportedOperationVariant {
        role: SemanticTransformRole,
    },
    UnsupportedMetadata {
        role: SemanticTransformRole,
        message: String,
    },
    Query(ProgramQueryError),
    Build(ProgramBuildError),
    Extension(SemanticAdError),
    Finish(ProgramFinishError),
    Cache(Error),
}

Failures produced by whole-program semantic AD.

Variants

ActivityArity

An activity mask did not match the corresponding ordered value list.

Fields

role: SemanticTransformRole

Transform role.

field: &'static str

Invalid mask.

expected: usize

Required entry count.

actual: usize

Supplied entry count.

UnsupportedCore

An active core operation has not yet been admitted to semantic AD.

Fields

role: SemanticTransformRole

Transform role.

op: String

Bounded operation diagnostic.

UnsupportedOperationVariant

A future semantic operation variant is unknown to this transform.

Fields

role: SemanticTransformRole

Transform role.

UnsupportedMetadata

Active derivative metadata is outside the admitted exact-shape subset.

Fields

role: SemanticTransformRole

Transform role.

message: String

Bounded metadata diagnostic.

Query(ProgramQueryError)

Source-program metadata could not be queried.

Build(ProgramBuildError)

Destination semantic-program construction failed.

Extension(SemanticAdError)

An extension-owned semantic AD rule failed.

Finish(ProgramFinishError)

The transformed program could not be frozen atomically.

Cache(Error)

The semantic AD transform cache could not be accessed.

Trait Implementations

impl Debug for SemanticAdTransformError

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

Formats the value using the given formatter.

impl Display for SemanticAdTransformError

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

Formats the value using the given formatter.

impl Error for SemanticAdTransformError

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<ProgramBuildError> for SemanticAdTransformError

fn from(source: ProgramBuildError) -> Self

Converts to this type from the input type.

impl From<ProgramFinishError> for SemanticAdTransformError

fn from(source: ProgramFinishError) -> Self

Converts to this type from the input type.

impl From<ProgramQueryError> for SemanticAdTransformError

fn from(source: ProgramQueryError) -> Self

Converts to this type from the input type.

impl From<SemanticAdError> for SemanticAdTransformError

fn from(source: SemanticAdError) -> Self

Converts to this type from the input type.