Struct ExprError 

pub struct ExprError { /* private fields */ }

A failure to parse an expression. Its Display message is the human-readable diagnostic, and names the offending character position where one is known.

Clone, PartialEq, and Eq are derived so a caller (the graph validator) can carry it inside its own comparable error type.

Implementations

impl ExprError

pub fn message(&self) -> &str

The human-readable diagnostic message.

Trait Implementations

impl Clone for ExprError

fn clone(&self) -> ExprError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExprError

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

Formats the value using the given formatter.

impl Display for ExprError

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

Formats the value using the given formatter.

impl Eq for ExprError

impl Error for ExprError

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 ExprError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExprError