Enum StructTailExpr

pub enum StructTailExpr<'hir> {
    None,
    Base(&'hir Expr<'hir>),
    DefaultFields(Span),
}

Variants

None

A struct expression where all the fields are explicitly enumerated: Foo { a, b }.

Base(&'hir Expr<'hir>)

A struct expression with a “base”, an expression of the same type as the outer struct that will be used to populate any fields not explicitly mentioned: Foo { ..base }

DefaultFields(Span)

A struct expression with a .. tail but no “base” expression. The values from the struct fields’ default values will be used to populate any fields not explicitly mentioned: Foo { .. }.

Trait Implementations

impl<'hir> Clone for StructTailExpr<'hir>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'hir> Debug for StructTailExpr<'hir>

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

Formats the value using the given formatter.

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

where __CTX: HashStableContext,

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

impl<'hir> Copy for StructTailExpr<'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: 16 bytes

Size for each variant:

• None: 0 bytes
• Base: 12 bytes
• DefaultFields: 8 bytes