Struct LambdaExpr 

pub struct LambdaExpr { /* private fields */ }

Implementations

impl LambdaExpr

pub fn params(&self) -> Option<LambdaParams>

The |…| parameter row (issue #1685). None only for a malformed node — parser/expr.rs::lambda_expr always opens with one, even for the zero-arg || form (whose row is simply empty).

pub fn return_annotation(&self) -> Option<TypeAnnotation>

The : type return annotation (|g|: bool { … }), if written.

Unambiguous as a direct child: a parameter’s own annotation lives inside that parameter’s PARAM node, itself inside LAMBDA_PARAMS, so the only TYPE_ANNOTATION directly under LAMBDA_EXPR is the return one.

pub fn body(&self) -> Option<SyntaxNode>

The body’s root node — the single expression (|g| g.awake) or the braced STMT_BLOCK (|g|: bool { … }). The last child, since the parser emits params, then the optional return annotation, then the body.

Trait Implementations

impl AstNode for LambdaExpr

fn can_cast(kind: SyntaxKind) -> bool

Returns true for a node with a SyntaxKind this type can wrap.

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

Try to cast a generic SyntaxNode into this typed wrapper.

fn syntax(&self) -> &SyntaxNode

Access the underlying SyntaxNode.

impl Clone for LambdaExpr

fn clone(&self) -> LambdaExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LambdaExpr

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

Formats the value using the given formatter.

impl Display for LambdaExpr

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

Formats the value using the given formatter.

impl Eq for LambdaExpr

impl Hash for LambdaExpr

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 LambdaExpr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LambdaExpr