Struct rustc_pattern_analysis::usefulness::PatCtxt

pub(crate) struct PatCtxt<'a, 'p, 'tcx> {
    pub(crate) cx: &'a MatchCheckCtxt<'p, 'tcx>,
    pub(crate) ty: Ty<'tcx>,
    pub(crate) is_top_level: bool,
}

Fields

cx: &'a MatchCheckCtxt<'p, 'tcx>

ty: Ty<'tcx>

Type of the current column under investigation.

is_top_level: bool

Whether the current pattern is the whole pattern as found in a match arm, or if it’s a subpattern.

Implementations

impl<'a, 'p, 'tcx> PatCtxt<'a, 'p, 'tcx>

pub(crate) fn new_dummy(cx: &'a MatchCheckCtxt<'p, 'tcx>, ty: Ty<'tcx>) -> Self

A PatCtxt when code other than is_useful needs one.

Trait Implementations

impl<'a, 'p, 'tcx> Clone for PatCtxt<'a, 'p, 'tcx>

fn clone(&self) -> PatCtxt<'a, 'p, 'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, 'p, 'tcx> Debug for PatCtxt<'a, 'p, 'tcx>

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

Formats the value using the given formatter.

impl<'a, 'p, 'tcx> Copy for PatCtxt<'a, 'p, 'tcx>

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: 24 bytes