Struct rustc_hir::LetExpr

pub struct LetExpr<'hir> {
    pub span: Span,
    pub pat: &'hir Pat<'hir>,
    pub ty: Option<&'hir Ty<'hir>>,
    pub init: &'hir Expr<'hir>,
    pub recovered: Recovered,
}

Represents a let <pat>[: <ty>] = <expr> expression (not a LetStmt), occurring in an if-let or let-else, evaluating to a boolean. Typically the pattern is refutable.

In an if let, imagine it as if (let <pat> = <expr>) { ... }; in a let-else, it is part of the desugaring to if-let. Only let-else supports the type annotation at present.

Fields

span: Span

pat: &'hir Pat<'hir>

ty: Option<&'hir Ty<'hir>>

init: &'hir Expr<'hir>

recovered: Recovered

Recovered::Yes when this let expressions is not in a syntactically valid location. Used to prevent building MIR in such situations.

Trait Implementations

impl<'hir> Clone for LetExpr<'hir>

fn clone(&self) -> LetExpr<'hir>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'hir> Debug for LetExpr<'hir>

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

Formats the value using the given formatter.

impl<'hir, __CTX> HashStable<__CTX> for LetExpr<'hir>

where __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl<'hir> Copy for LetExpr<'hir>

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: 40 bytes