Struct rustc_ast::ast::Expr

pub struct Expr {
    pub id: NodeId,
    pub kind: ExprKind,
    pub span: Span,
    pub attrs: AttrVec,
    pub tokens: Option<LazyTokenStream>,
}

An expression.

Fields

id: NodeId

kind: ExprKind

span: Span

attrs: AttrVec

tokens: Option<LazyTokenStream>

Implementations

impl Expr

pub fn returns(&self) -> bool

Returns true if this expression would be valid somewhere that expects a value; for example, an if condition.

pub fn is_potential_trivial_const_param(&self) -> bool

Is this expr either N, or { N }.

If this is not the case, name resolution does not resolve N when using min_const_generics as more complex expressions are not supported.

pub fn to_bound(&self) -> Option<GenericBound>

pub fn peel_parens(&self) -> &Expr

pub fn to_ty(&self) -> Option<P<Ty>>

Attempts to reparse as Ty (for diagnostic purposes).

pub fn precedence(&self) -> ExprPrecedence

Trait Implementations

impl AstLike for Expr

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl Clone for Expr

fn clone(&self) -> Expr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for Expr

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<__E: Encoder> Encodable<__E> for Expr

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>