Enum PositionKind 

#[non_exhaustive]
pub enum PositionKind {
    StructField,
    ListElement,
    MapKey,
    MapValue,
    Tuple,
    Value,
}

Where the cursor sits inside the RON structure (FR-010).

Derived purely from the enclosing CST construct. PositionKind::Value is the general “a value is expected here” position (top-level value, list element of a freshly-opened list, a struct/map value slot, …) where any RON value — and so Some / None / a variant name — is legal. The more specific kinds carry the extra structural knowledge that lets completion offer attested field names, keys, etc.

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.

StructField

Inside a struct’s parentheses, at a field name position (before the :).

ListElement

Inside a list [ .. ], at an element position.

MapKey

Inside a map { .. }, at a key position (before the :).

MapValue

Inside a map entry, at the value position (after the :).

Tuple

Inside a tuple ( a, b ), at a positional element position.

Value

A generic value position (top-level value, struct/variant payload value, or any spot where a fresh RON value is expected).

Trait Implementations

impl Clone for PositionKind

fn clone(&self) -> PositionKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PositionKind

impl Debug for PositionKind

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

Formats the value using the given formatter.

impl Eq for PositionKind

impl Hash for PositionKind

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 PositionKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PositionKind