Enum ListKeyReason 

#[non_exhaustive]
pub enum ListKeyReason {
    MissingField {
        segment: String,
    },
    DuplicateField {
        segment: String,
    },
    NotAnObject {
        segment: String,
    },
    NotAnIdentity {
        kind: &'static str,
    },
    NotASafeInteger,
    Duplicate {
        first_row: usize,
    },
    RowShape {
        roots: usize,
        stray_content: bool,
    },
    AuthoredKey,
    UnbalancedRow,
}

Why a keyed row was refused (ListKeyViolation::reason).

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.

MissingField

The row, or an object on the path, has no field of that name.

Fields

segment: String

The segment that was not found.

DuplicateField

The row, or an object on the path, declares the field twice, so the key would be whichever one a reader happened to take.

Fields

segment: String

The repeated segment.

NotAnObject

A value on the path before the last segment is not an object.

Fields

segment: String

The segment that could not be read.

NotAnIdentity

The value at the path is not a string or a safe integer: null, a boolean, an array or an object.

Fields

kind: &'static str

The kind of value found, for the message.

NotASafeInteger

The value at the path is a number that is not an integer within ±(2^53 − 1): a fraction, an infinity, NaN or a larger magnitude.

Duplicate

Another row of the same list execution already rendered this key. The key itself is not carried: it is the row’s data, and a diagnostic names positions, never private values.

Fields

first_row: usize

Zero-based position of the row that rendered it first.

RowShape

The row body did not render exactly one root element to carry the key: no element, more than one, or text, a dynamic range or an island envelope that does not wholly enclose the root beside it.

Fields

roots: usize

Elements opened directly at the row’s level.

stray_content: bool

Whether text, a range, or an island envelope that does not wholly enclose the root was written directly at the row’s level.

AuthoredKey

The row’s root carries an authored data-forma-key (static or dynamic); the attribute is the compiler-written identity and nothing else may set it.

UnbalancedRow

The row closed an element it did not open, or left one open at its end, so its root is not one balanced element at the row’s level.

Trait Implementations

impl Clone for ListKeyReason

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 ListKeyReason

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

Formats the value using the given formatter.

impl Display for ListKeyReason

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

Formats the value using the given formatter.

impl Eq for ListKeyReason

impl PartialEq for ListKeyReason

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ListKeyReason