Enum ElementError 

pub enum ElementError {
    Name(NameError),
    Attribute(AttributeError),
    MissingTypeLabel,
    UnknownElementType {
        type_id: String,
    },
    DuplicateParameterName {
        name: String,
    },
    DuplicateResultParameterName {
        name: String,
    },
    UnknownConfigurationParameter {
        name: String,
    },
    ParameterNameCollidesWithAttribute {
        name: String,
    },
    InvalidMaxConcurrency,
    GroupConcurrencyExceedsGlobal {
        group: u32,
        global: u32,
    },
    MissingRequiredLabel {
        key: String,
    },
    ForbiddenLabelPresent {
        key: String,
        reason: String,
    },
    EmptyTokenExpr,
}

Errors from Element construction and validation.

Variants

Name(NameError)

A name-validation error bubbled up (e.g. the type label value wasn’t a valid TypeId).

Attribute(AttributeError)

An attribute-layer namespace check failed.

MissingTypeLabel

The element’s labels are missing the type entry required by SRD-0007 D8.

UnknownElementType

The element’s type label names a type that isn’t registered.

Fields

type_id: String

The unregistered type id.

DuplicateParameterName

Two Parameters in Element.parameters share a name.

Fields

name: String

The duplicated name.

DuplicateResultParameterName

Two Parameters in Element.result_parameters share a name.

Fields

name: String

The duplicated name.

UnknownConfigurationParameter

A configuration key references a parameter the element doesn’t declare.

Fields

name: String

The offending parameter name.

ParameterNameCollidesWithAttribute

A parameter name collides with a label / tag / port on the same element.

Fields

name: String

The offending parameter name.

InvalidMaxConcurrency

max_concurrency is set to zero.

GroupConcurrencyExceedsGlobal

max_group_concurrency exceeds max_concurrency.

Fields

group: u32

The group-level cap.

global: u32

The global cap it must not exceed.

MissingRequiredLabel

A required label (declared by the type descriptor) is absent.

Fields

key: String

The label key.

ForbiddenLabelPresent

A forbidden label (declared by the type descriptor) is present.

Fields

key: String

The offending label key.

reason: String

Descriptor-supplied explanation.

EmptyTokenExpr

A TokenExpr was constructed from an empty string.

Trait Implementations

impl Debug for ElementError

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

Formats the value using the given formatter.

impl Display for ElementError

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

Formats the value using the given formatter.

impl Error for ElementError

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<AttributeError> for ElementError

fn from(source: AttributeError) -> Self

Converts to this type from the input type.

impl From<ElementError> for Error

fn from(source: ElementError) -> Self

Converts to this type from the input type.

impl From<NameError> for ElementError

fn from(source: NameError) -> Self

Converts to this type from the input type.