Enum RuleError 

pub enum RuleError {
    ContextNotSet,
    TypeMismatch {
        key: &'static str,
        expected: &'static str,
    },
    TooManyChildren {
        max: usize,
        attempted: usize,
    },
    ExecutionFailed(String),
    BorrowFailed(String),
}

Error types for rule execution and configuration

Variants

ContextNotSet

Rule context was not set when required

TypeMismatch

Type mismatch when retrieving value from context

Fields

key: &'static str

expected: &'static str

TooManyChildren

Too many children added to a rule that supports only one

Fields

max: usize

attempted: usize

ExecutionFailed(String)

Rule execution failed

BorrowFailed(String)

Borrow check failed at runtime

Trait Implementations

impl Clone for RuleError

fn clone(&self) -> RuleError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuleError

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

Formats the value using the given formatter.

impl Display for RuleError

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

Formats the value using the given formatter.

impl Error for RuleError

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 RuleError

fn eq(&self, other: &RuleError) -> 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 StructuralPartialEq for RuleError