Enum ValidationError 

#[non_exhaustive]
pub enum ValidationError {
    InvalidNodeId {
        value: String,
        reason: &'static str,
    },
    DuplicateNodeId {
        id: String,
    },
    DanglingEdgeReference {
        id: String,
        field: &'static str,
    },
    EmptyTier {
        id: String,
    },
    NestingTooDeep {
        max_depth: usize,
        actual_depth: usize,
    },
    MissingField {
        field: &'static str,
    },
}

Errors that occur when constructing or validating core types.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidNodeId

A node ID contains invalid characters or is empty.

Fields

value: String

The invalid ID value that was rejected.

reason: &'static str

What was wrong with it.

DuplicateNodeId

Two or more nodes share the same ID.

Fields

id: String

The duplicated ID.

DanglingEdgeReference

An edge references a node ID that does not exist in the diagram.

Fields

id: String

The edge’s source or target that doesn’t exist.

field: &'static str

Which field was invalid (“from” or “to”).

EmptyTier

A tier has neither nodes nor a container.

Fields

id: String

The tier’s ID.

NestingTooDeep

Container nesting exceeds the maximum depth.

Fields

max_depth: usize

The maximum allowed depth.

actual_depth: usize

The actual depth found.

MissingField

A required field is missing.

Fields

field: &'static str

The name of the missing field.

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

Formats the value using the given formatter.

impl Display for ValidationError

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

Formats the value using the given formatter.

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ValidationError

impl StructuralPartialEq for ValidationError