Enum ProjectionError 

pub enum ProjectionError {
    NonParticipantChoice,
    UnsupportedParallel(String),
    InconsistentParallel,
    UnboundVariable(String),
    DynamicRoleProjection {
        role: String,
    },
    UnboundSymbolic {
        param: String,
    },
    RangeProjection,
    WildcardProjection,
    MergeFailure(String),
    UnsupportedAuthorityConstruct {
        construct: &'static str,
    },
}

Errors that can occur during projection

Variants

NonParticipantChoice

UnsupportedParallel(String)

InconsistentParallel

UnboundVariable(String)

DynamicRoleProjection

Fields

role: String

UnboundSymbolic

Fields

param: String

RangeProjection

WildcardProjection

MergeFailure(String)

UnsupportedAuthorityConstruct

Fields

construct: &'static str

Trait Implementations

impl Debug for ProjectionError

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

Formats the value using the given formatter.

impl Display for ProjectionError

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

Formats the value using the given formatter.

impl Error for ProjectionError

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.