Enum DeclOrigin

pub(crate) enum DeclOrigin<'a> {
    LetExpr,
    LocalDecl {
        els: Option<&'a Block<'a>>,
    },
}

Provides context for checking patterns in declarations. More specifically this allows us to infer array types if the pattern is irrefutable and allows us to infer the size of the array. See issue #76342.

Variants

LetExpr

LocalDecl

Fields

els: Option<&'a Block<'a>>

Implementations

impl<'a> DeclOrigin<'a>

pub(crate) fn try_get_else(&self) -> Option<&'a Block<'a>>

Trait Implementations

impl<'a> Clone for DeclOrigin<'a>

fn clone(&self) -> DeclOrigin<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for DeclOrigin<'a>

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

Formats the value using the given formatter.

impl<'a> Copy for DeclOrigin<'a>

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:

• LetExpr: 0 bytes
• LocalDecl: 8 bytes