Enum ArenaError 

pub enum ArenaError {
    CapacityExceeded {
        requested: usize,
        capacity: usize,
    },
    StaleHandle {
        handle_generation: u32,
        oldest_live: u32,
    },
    UnknownField {
        field: FieldId,
    },
    NotWritable {
        field: FieldId,
    },
    InvalidConfig {
        reason: String,
    },
}

Errors that can occur during arena operations.

Variants

CapacityExceeded

Segment pool is full — no more segments can be allocated.

Fields

requested: usize

Number of bytes requested.

capacity: usize

Total capacity available across all segments.

StaleHandle

A FieldHandle from a generation that has been reclaimed.

Fields

handle_generation: u32

The generation encoded in the handle.

oldest_live: u32

The oldest live generation in the arena.

UnknownField

A FieldId that is not registered in the arena.

Fields

field: FieldId

The unrecognised field.

NotWritable

Attempted to write a field whose mutability does not permit writes in the current context (e.g. writing a Static field after init).

Fields

field: FieldId

The field that was not writable.

InvalidConfig

Arena configuration is invalid.

Fields

reason: String

What is wrong with the configuration.

Trait Implementations

impl Clone for ArenaError

fn clone(&self) -> ArenaError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArenaError

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

Formats the value using the given formatter.

impl Display for ArenaError

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

Formats the value using the given formatter.

impl Error for ArenaError

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 ArenaError

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

impl StructuralPartialEq for ArenaError