Enum ValidationError 

pub enum ValidationError {
    CircularDependency {
        chain: Vec<String>,
    },
    MissingDependency {
        source: String,
        missing: String,
    },
    DuplicateNode {
        name: String,
    },
    MultipleConstructors {
        type_name: String,
        count: usize,
    },
    DuplicateLifecycleHook {
        type_name: String,
        hook: String,
    },
    InvalidConstructorReturn {
        type_name: String,
        expected: String,
    },
    ScopeMismatch {
        source: String,
        source_scope: String,
        dependency: String,
        dependency_scope: String,
    },
}

Errors found during dependency graph validation.

Variants

CircularDependency

A circular dependency was detected.

The chain field shows the cycle path, e.g.: ["UserService", "AuthService", "SessionManager", "UserService"]

Fields

chain: Vec<String>

The chain of types forming the cycle.

MissingDependency

A dependency references a type not registered in the graph.

Fields

source: String

The type that has the missing dependency.

missing: String

The missing dependency type name.

DuplicateNode

The same type name appears more than once in the graph.

Fields

name: String

The duplicated type name.

MultipleConstructors

A type has multiple constructors annotated with #[injectable(ctor)].

Fields

type_name: String

The type with multiple constructors.

count: usize

The number of constructors found.

DuplicateLifecycleHook

A type has duplicate lifecycle hooks.

Fields

type_name: String

The type with duplicate hooks.

hook: String

Which hook is duplicated.

InvalidConstructorReturn

A constructor has an invalid return type.

Fields

type_name: String

The type with the invalid constructor.

expected: String

The expected return type.

ScopeMismatch

A scope mismatch: a wider-scope type depends on a narrower-scope type.

For example, a singleton depending on a transient would capture the transient instance forever, violating transient semantics.

Fields

source: String

The type with the wider scope (e.g., singleton).

source_scope: String

The scope of the source type.

dependency: String

The dependency with the narrower scope (e.g., transient).

dependency_scope: String

The scope of the dependency.

Trait Implementations

impl Clone for ValidationError

fn clone(&self) -> ValidationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValidationError

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

Formats the value using the given formatter.

impl Display for ValidationError

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

Formats the value using the given formatter.

impl Eq for ValidationError

impl Error for ValidationError

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 ValidationError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ValidationError