Enum rustc_trait_selection::traits::TraitQueryMode

pub enum TraitQueryMode {
    Standard,
    Canonical,
}

The mode that trait queries run in.

Variants

Standard

Standard/un-canonicalized queries get accurate spans etc. passed in and hence can do reasonable error reporting on their own.

Canonical

Canonical queries get dummy spans and hence must generally propagate errors to pre-canonicalization callsites.

Trait Implementations

impl Clone for TraitQueryMode

fn clone(&self) -> TraitQueryMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TraitQueryMode

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

Formats the value using the given formatter.

impl PartialEq<TraitQueryMode> for TraitQueryMode

fn eq(&self, other: &TraitQueryMode) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for TraitQueryMode

impl Eq for TraitQueryMode

impl StructuralEq for TraitQueryMode

impl StructuralPartialEq for TraitQueryMode

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: 1 byte

Size for each variant:

• Standard: 0 bytes
• Canonical: 0 bytes