Enum ComponentGraphError 

pub enum ComponentGraphError {
    Empty,
    EmptyId,
    DuplicateId(String),
    DependencyArity {
        unit: String,
        dependencies: usize,
        domains: usize,
    },
    UnknownDependency {
        unit: String,
        dependency: String,
    },
    DuplicateDependency {
        unit: String,
        dependency: String,
    },
    DomainMismatch {
        unit: String,
        dependency: String,
        expected: ComponentDomain,
        actual: ComponentDomain,
    },
    Cycle,
    NoOutputs,
    DuplicateOutput,
    UnknownOutput(String),
}

Invalid component graph declaration.

Variants

Empty

No components were declared.

EmptyId

One component identity was empty.

DuplicateId(String)

A component identity occurred more than once.

DependencyArity

Dependency and expected-domain counts differ.

Fields

unit: String

Component identity.

dependencies: usize

Dependency count.

domains: usize

Expected-domain count.

UnknownDependency

A dependency identity was not declared.

Fields

unit: String

Consumer component.

dependency: String

Missing dependency.

DuplicateDependency

The same dependency was listed twice.

Fields

unit: String

Consumer component.

dependency: String

Repeated dependency.

DomainMismatch

Producer and consumer domains disagree.

Fields

unit: String

Consumer component.

dependency: String

Producer component.

expected: ComponentDomain

Required domain.

actual: ComponentDomain

Produced domain.

Cycle

Dependency graph contains a cycle.

NoOutputs

No observable output was declared.

DuplicateOutput

One output identity was repeated.

UnknownOutput(String)

An output identity was not declared.

Trait Implementations

impl Clone for ComponentGraphError

fn clone(&self) -> ComponentGraphError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComponentGraphError

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

Formats the value using the given formatter.

impl Display for ComponentGraphError

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

Formats the value using the given formatter.

impl Eq for ComponentGraphError

impl Error for ComponentGraphError

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 ComponentGraphError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ComponentGraphError