Enum ExprGraphError 

pub enum ExprGraphError {
    MetadataLength {
        node_len: usize,
        metadata_len: usize,
    },
    InvalidRoot {
        root: usize,
        node_len: usize,
    },
    InvalidChild {
        node: usize,
        child: usize,
    },
    InvalidChildOrder {
        node: usize,
        child: usize,
    },
    Empty,
}

Structural validation errors for serialized expression graphs.

Variants

MetadataLength

The node and metadata arrays had different lengths.

Fields

node_len: usize

Number of graph nodes.

metadata_len: usize

Number of metadata entries.

InvalidRoot

The root identifier was outside the node array.

Fields

root: usize

Invalid root index.

node_len: usize

Number of graph nodes.

InvalidChild

A node referenced a child outside the node array.

Fields

node: usize

Parent node index.

child: usize

Invalid child index.

InvalidChildOrder

A node referenced a child stored after its parent.

Fields

node: usize

Parent node index.

child: usize

Out-of-order child index.

Empty

The graph contained no nodes.

Trait Implementations

impl Clone for ExprGraphError

fn clone(&self) -> ExprGraphError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExprGraphError

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

Formats the value using the given formatter.

impl Display for ExprGraphError

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

Formats the value using the given formatter.

impl Eq for ExprGraphError

impl Error for ExprGraphError

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<ExprGraphError> for ExprError

fn from(source: ExprGraphError) -> Self

Converts to this type from the input type.

impl PartialEq for ExprGraphError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExprGraphError