Enum ConstError 

pub enum ConstError {
    NotAConst,
    BadNode(BadNode),
}

Error for getting a constant from a node

Variants

NotAConst

The given node is not a constant

BadNode(BadNode)

Node is missing from the context

Trait Implementations

impl Debug for ConstError

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

Formats the value using the given formatter.

impl Display for ConstError

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

Formats the value using the given formatter.

impl Error for ConstError

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<BadNode> for ConstError

fn from(source: BadNode) -> Self

Converts to this type from the input type.