Enum DeclarationError 

pub enum DeclarationError {
    NamespaceEmpty,
    StemEmpty,
    NotAnIdentifier,
    Absent {
        seat: Seat,
    },
    Doubled {
        seat: Seat,
    },
    Unbounded {
        seat: Seat,
        bound: u64,
        observed: u64,
    },
    NotACurve {
        observed: u64,
    },
}

How the values one descriptor declaration states are not a lawful declaration.

Seven shapes over one seat roster rather than one row per seat: what refuses is the SHAPE of the disagreement, and which seat it was about is the other half of the same sentence.

Variants

NamespaceEmpty

A namespaced name states no owner.

StemEmpty

A namespaced name states no spelling.

NotAnIdentifier

A spelling written where the rendering needs an item name cannot be one: not one Rust identifier, or a keyword the language already took.

Absent

A seat that admits no emptiness was stated empty.

Fields

seat: Seat

What was being stated.

Doubled

Two of one roster’s members carry one spelling.

Fields

seat: Seat

What was being stated.

Unbounded

A roster states more members than its declared magnitude admits.

Fields

seat: Seat

What was being stated.

bound: u64

The declared magnitude.

observed: u64

How many were stated.

NotACurve

An input-size axis states too few sizes for a growth class to be read off it.

Fields

observed: u64

How many sizes were stated.

Implementations

impl DeclarationError

pub const fn slot(&self) -> u8

This refusal’s position in its own roster, appended and never renumbered.

pub const fn classified(&self) -> Observed

How what was observed differs from the vocabulary that was expected.

pub fn canonical_bytes(&self) -> Vec<u8>

This refusal’s canonical bytes: its own position, then the members it carries.

impl DeclarationError

pub fn unbounded(seat: Seat, bound: usize, observed: usize) -> Self

The refusal one overrun roster amounts to, with both counts widened once.

Trait Implementations

impl Clone for DeclarationError

fn clone(&self) -> DeclarationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DeclarationError

impl Debug for DeclarationError

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

Formats the value using the given formatter.

impl Display for DeclarationError

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

Formats the value using the given formatter.

impl Eq for DeclarationError

impl Error for DeclarationError

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 Hash for DeclarationError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DeclarationError

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

Equality operator ==.

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

Inequality operator !=.

impl Refused for DeclarationError

fn related(&self) -> Vec<Vec<u8>>

A single cause enumerates nothing: the primary cause is the summary’s own subject, never a member of its related set.

const PHASE: Phase = Phase::Capture

The step of the road this refusal is raised at.

const FAMILY: Family = DECLARATION_FAMILY

The family whose issue space this refusal’s related identities derive in.

fn class(&self) -> RefusalClass

Which class of refusal the summary line opens with.

fn first(&self) -> String

How the first established issue reads for a person.

fn observed(&self) -> Observed

How what was observed differs from the expected contract, read off that same first issue.

fn body(&self) -> LineBody

What the summary line is a summary of.

fn repairs(&self) -> Bounded<Repair, REPAIR_LIMIT>

The owner-declared repairs that apply.

impl StructuralPartialEq for DeclarationError