Enum StampError 

pub enum StampError {
    NotAnIdentifier,
    PathEmpty,
    PathUnbounded {
        overflow: Overflow,
    },
    PatternEmpty,
    PatternUnbounded {
        overflow: Overflow,
    },
    SeatNameDoubled {
        at: u32,
    },
    SitesAbsent,
    SitesUnbounded {
        overflow: Overflow,
    },
    SiteNameDoubled {
        at: u32,
    },
    ArgumentsUnbounded {
        overflow: Overflow,
    },
    ArgumentsUnmatched {
        at: u32,
        seats: u32,
        supplied: u32,
    },
    ReachUnseated {
        at: u32,
    },
    SeatNotPlanned {
        role_slot: u16,
    },
    DestinationNotArtifact {
        role_slot: u16,
    },
    TokensUnbounded {
        overflow: Overflow,
    },
}

How stamping says no.

One cause per refusal: every road here settles one question, and the road that settles several settles them in a declared order, so exactly one row is true of any refused value.

Variants

NotAnIdentifier

A spelling cannot stand where its seat needs it: outside the identifier alphabet, or — at a name seat — a keyword the language already took.

PathEmpty

A path names no segment, so it names nothing.

PathUnbounded

A path carries more segments than the declared magnitude.

Fields

overflow: Overflow

The magnitude and what was offered.

PatternEmpty

A pattern declares no part, so it declares no shape.

PatternUnbounded

A pattern declares more parts than the declared magnitude.

Fields

overflow: Overflow

The magnitude and what was offered.

SeatNameDoubled

Two seats of one pattern carry one name, which binds one metavariable twice.

Fields

at: u32

The doubling part’s position in the pattern.

SitesAbsent

A stamp covers no site, and a definition nobody invokes has no reader.

SitesUnbounded

A stamp covers more sites than the declared magnitude.

Fields

overflow: Overflow

The magnitude and what was offered.

SiteNameDoubled

Two sites of one stamp carry one name, which is a manifest row written twice.

Fields

at: u32

The doubling site’s position in the stamp.

ArgumentsUnbounded

One site carries more arguments than the declared magnitude.

Fields

overflow: Overflow

The magnitude and what was offered.

ArgumentsUnmatched

One site supplies a different number of arguments than the pattern declares seats.

Fields

at: u32

The site’s position in the stamp.

seats: u32

How many seats the pattern declares.

supplied: u32

How many arguments the site supplied.

ReachUnseated

One site declares a reach the pattern gives no coordinate to, which is a visibility with nowhere to be written rather than a narrower one.

Fields

at: u32

The site’s position in the stamp.

SeatNotPlanned

The plan declares no member under the seat this artifact stands for.

Fields

role_slot: u16

The seat’s position in its kind’s roster.

DestinationNotArtifact

The planned member lands somewhere other than a standalone artifact, and a published stamp is bytes at an address the other three deliveries do not name.

Fields

role_slot: u16

The seat’s position in its kind’s roster.

TokensUnbounded

A rendered tree outgrows the declared token magnitude, and the artifact refuses whole rather than materializing the sites that happened to fit.

Fields

overflow: Overflow

The magnitude and what was offered.

Trait Implementations

impl Clone for StampError

fn clone(&self) -> StampError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StampError

impl Debug for StampError

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

Formats the value using the given formatter.

impl Display for StampError

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

Formats the value using the given formatter.

impl Eq for StampError

impl Error for StampError

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<Overflow> for StampError

Every overflow a rendering road meets is a tree that outgrew the declared token magnitude.

The nonclaim is stated here: this is the only overflow the roads in this home can raise, because the only bounded collection they build is a token group.

fn from(overflow: Overflow) -> Self

Converts to this type from the input type.

impl Hash for StampError

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 StampError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StampError