Struct chalk_solve::rust_ir::TraitFlags [−][src]
pub struct TraitFlags {
pub auto: bool,
pub marker: bool,
pub upstream: bool,
pub fundamental: bool,
pub non_enumerable: bool,
pub coinductive: bool,
}
Fields
auto: bool
An “auto trait” is one that is “automatically implemented” for every struct, so long as no explicit impl is given.
Examples are Send
and Sync
.
marker: bool
upstream: bool
Indicate that a trait is defined upstream (in a dependency), used during coherence checking.
fundamental: bool
A fundamental trait is a trait where adding an impl for an existing type
is considered a breaking change. Examples of fundamental traits are the
closure traits like Fn
and FnMut
.
As of this writing (2020-03-27), fundamental traits are declared by the
unstable #[fundamental]
attribute in rustc, and hence cannot appear
outside of the standard library.
non_enumerable: bool
Indicates that chalk cannot list all of the implementations of the given trait, likely because it is a publicly exported trait in a library.
Currently (2020-03-27) rustc and rust-analyzer mark all traits as non_enumerable, and in the future it may become the only option.
coinductive: bool
Trait Implementations
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
fn visit_with<'i, B>(
&self,
_visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
_outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
fn visit_with<'i, B>(
&self,
_visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
_outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
Apply the given visitor visitor
to self
; binders
is the
number of binders that are in scope when beginning the
visitor. Typically binders
starts as 0, but is adjusted when
we encounter Binders<T>
in the IR or other similar
constructs. Read more
Auto Trait Implementations
impl RefUnwindSafe for TraitFlags
impl Send for TraitFlags
impl Sync for TraitFlags
impl Unpin for TraitFlags
impl UnwindSafe for TraitFlags
Blanket Implementations
Mutably borrows from an owned value. Read more
fn cast<U>(self, interner: &<U as HasInterner>::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
fn cast<U>(self, interner: &<U as HasInterner>::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
Cast a value to type U
using CastTo
.
Compare self to key
and return true
if they are equal.
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more