Enum GraphValidateError 

#[non_exhaustive]
pub enum GraphValidateError {
    Cycle {
        path: Vec<u32>,
    },
    DanglingEdge {
        from: u32,
        to: u32,
    },
    OrphanPhi {
        node_id: u32,
    },
}

Validation error returned when a NodeGraph fails structural checks before lowering to statement-IR.

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.

Cycle

A cycle was detected in the graph.

Fields

path: Vec<u32>

Node ids forming the cycle.

DanglingEdge

An edge references a node id that does not exist.

Fields

from: u32

Source node id.

to: u32

Target node id.

OrphanPhi

A Phi node has no valid predecessors.

Fields

node_id: u32

The Phi node id.

Trait Implementations

impl Clone for GraphValidateError

fn clone(&self) -> GraphValidateError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphValidateError

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

Formats the value using the given formatter.

impl Display for GraphValidateError

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

Formats the value using the given formatter.

impl Error for GraphValidateError

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 GraphValidateError

fn eq(&self, other: &GraphValidateError) -> 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 GraphValidateError

impl StructuralPartialEq for GraphValidateError