Enum Reason 

#[non_exhaustive]
pub enum Reason {
    Truncated,
    UnknownProlog(u32),
    TooDeep,
    SizeOverflow,
    LengthTooShort(usize),
    DoesNotFit {
        kind: ObjectType,
        size: usize,
        left: usize,
    },
    DirectoryOffset,
    RealTooShort,
    NotBcd {
        kind: ObjectType,
        hex: String,
    },
    BadSign(u8),
    EmptyInteger,
    LengthTooSmall(ObjectType),
    OddString,
    UnitWithoutReal,
    ArrayDimensions(usize),
    ArrayLength,
    TooManyObjects,
    TooManyNibbles,
    TooManyCloned,
}

Why the nibbles at DecodeError::offset are not an object.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Truncated

The object runs past the end of the nibbles: a field starts or ends beyond them.

UnknownProlog(u32)

The 5-nibble prolog is in the prolog range but is no known type.

TooDeep

Objects nest deeper than MAX_DEPTH levels.

SizeOverflow

A size or position does not fit a usize.

LengthTooShort(usize)

A length field holds less than its own 5 nibbles.

DoesNotFit

The object’s fields say it is size nibbles long, but only left nibbles follow its start.

Fields

kind: ObjectType

Its type.

size: usize

Its size from its fields.

left: usize

Nibbles from its start to the end of the input.

DirectoryOffset

A directory’s last-variable offset matches none of its records.

RealTooShort

A real’s body is shorter than 16 nibbles.

NotBcd

A real’s or an integer’s body holds a nibble above 9; the body as hex.

Fields

kind: ObjectType

The type (ObjectType::Real or ObjectType::Integer).

hex: String

The body, hex.

BadSign(u8)

A real’s sign nibble is neither 0 nor 9.

EmptyInteger

An integer without a single nibble.

LengthTooSmall(ObjectType)

A string’s, binary integer’s or integer’s length field is below 5.

OddString

A string of an odd number of nibbles.

UnitWithoutReal

A unit object whose first element is no real.

ArrayDimensions(usize)

An array of more dimensions than the calculator makes (2).

ArrayLength

An array whose dimensions do not match its length.

TooManyObjects

More objects than crate::MAX_DECODED_OBJECTS in one decode.

TooManyNibbles

More nibbles read than crate::MAX_DECODED_NIBBLES in one decode.

TooManyCloned

More nibbles cloned than crate::MAX_CLONED_NIBBLES in one decode.

Trait Implementations

impl Clone for Reason

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Reason

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

Formats the value using the given formatter.

impl Eq for Reason

impl PartialEq for Reason

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Reason