Struct rustc_ast::ast::Expr

source ·
pub struct Expr {
    pub id: NodeId,
    pub kind: ExprKind,
    pub span: Span,
    pub attrs: AttrVec,
    pub tokens: Option<LazyAttrTokenStream>,
}
Expand description

An expression.

Fields§

§id: NodeId§kind: ExprKind§span: Span§attrs: AttrVec§tokens: Option<LazyAttrTokenStream>

Implementations§

source§

impl Expr

source

pub fn is_potential_trivial_const_arg(&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.

Does not ensure that the path resolves to a const param, the caller should check this.

source

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

source

pub fn peel_parens(&self) -> &Expr

source

pub fn peel_parens_and_refs(&self) -> &Expr

source

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

Attempts to reparse as Ty (for diagnostic purposes).

source

pub fn precedence(&self) -> ExprPrecedence

source

pub fn take(&mut self) -> Self

source

pub fn is_approximately_pattern(&self) -> bool

To a first-order approximation, is this a pattern?

Trait Implementations§

source§

impl !AstDeref for Expr

§

type Target

source§

fn ast_deref(&self) -> &Self::Target

source§

fn ast_deref_mut(&mut self) -> &mut Self::Target

source§

impl Clone for Expr

source§

fn clone(&self) -> Expr

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for Expr

source§

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

Formats the value using the given formatter. Read more
source§

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

source§

fn decode(__decoder: &mut __D) -> Self

source§

impl DummyAstNode for Expr

source§

fn dummy() -> Self

source§

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

source§

fn encode(&self, __encoder: &mut __E)

source§

impl HasAttrs for Expr

source§

const SUPPORTS_CUSTOM_INNER_ATTRS: bool = false

This is true if this HasAttrs might support ‘custom’ (proc-macro) inner attributes. Attributes like #![cfg] and #![cfg_attr] are not considered ‘custom’ attributes. Read more
source§

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

source§

fn visit_attrs(&mut self, f: impl FnOnce(&mut AttrVec))

source§

impl HasNodeId for Expr

source§

fn node_id(&self) -> NodeId

source§

fn node_id_mut(&mut self) -> &mut NodeId

source§

impl HasSpan for Expr

source§

fn span(&self) -> Span

source§

impl HasTokens for Expr

Auto Trait Implementations§

§

impl !RefUnwindSafe for Expr

§

impl !Send for Expr

§

impl !Sync for Expr

§

impl Unpin for Expr

§

impl !UnwindSafe for Expr

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 72 bytes