Enum Value 

pub enum Value {
    Struct(Struct),
    Tuple(Tuple),
    List(List),
    Map(Map),
    EnumVariant(EnumVariant),
    Unit(Unit),
    Literal(Literal),
    Error(SyntaxNode),
}

A typed RON value: the classified wrapper for any value-position node.

Returned by the value accessors (Document::value, StructField::value, MapEntry::key/MapEntry::value, and the items() iterators). The Error / unknown arm keeps navigation total over error-recovered trees (INV-3): a malformed value is still reachable as Value::Error rather than silently dropped.

Variants

Struct(Struct)

A named or anonymous struct Name( field: v, .. ) / ( field: v, .. ).

Tuple(Tuple)

A positional tuple / tuple-struct ( a, b, c ).

List(List)

A list / sequence [ a, b, c ].

Map(Map)

A map { k: v, .. } (keys may be non-string values).

EnumVariant(EnumVariant)

An enum variant: bare Ident, or Ident(..) / Ident{..} payload.

Unit(Unit)

The unit value ().

Literal(Literal)

A scalar literal (int, float, string, raw string, char, bool).

Error(SyntaxNode)

An unparseable / recovered value node (Error kind). Kept reachable so navigation is total over error-recovered trees (INV-3).

Implementations

impl Value

pub fn cast(node: SyntaxNode) -> Option<Self>

Classify a value-position SyntaxNode into a typed Value.

Returns None only for a node whose kind is not a value (e.g. Root, StructField, MapEntry, ExtensionAttr) — callers that already hold a value-position node always get Some.

pub fn syntax(&self) -> &SyntaxNode

The underlying SyntaxNode, regardless of variant.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Eq for Value

impl Hash for Value

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 Value

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Value