Struct MapProjectionItem 

pub struct MapProjectionItem { /* private fields */ }

Typed wrapper for one item inside a MapProjection.

Spec §6.1 / §19 row “Map projection” (cy-01q). Each item is one of the four MapProjectionItemKind shapes; classify with Self::kind and use the kind-specific accessors.

Implementations

impl MapProjectionItem

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

Try to cast a raw SyntaxNode to a MapProjectionItem. Returns None unless syntax.kind() == MAP_PROJECTION_ITEM.

pub fn syntax(&self) -> &SyntaxNode

The underlying SyntaxNode.

pub fn kind(&self) -> MapProjectionItemKind

Classify this item by inspecting its leading non-trivia tokens. The four shapes are unambiguous once we know whether the first significant token is ., *, or an identifier — see the parser’s map_projection_item for the inverse.

pub fn key_token(&self) -> Option<SyntaxToken>

For PropertySelector and Literal items, return the bound property-key token. Returns None for spread forms or malformed recovery shapes.

pub fn value(&self) -> Option<Expr>

For Literal items only, return the value expression. Returns None for the other three kinds.

Trait Implementations

impl Clone for MapProjectionItem

fn clone(&self) -> MapProjectionItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MapProjectionItem

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

Formats the value using the given formatter.

impl Hash for MapProjectionItem

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 MapProjectionItem

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for MapProjectionItem

impl StructuralPartialEq for MapProjectionItem