Enum rustc_query_system::dep_graph::graph::TaskDepsRef
source · pub enum TaskDepsRef<'a> {
Allow(&'a Lock<TaskDeps>),
EvalAlways,
Ignore,
Forbid,
}
Variants§
Allow(&'a Lock<TaskDeps>)
New dependencies can be added to the
TaskDeps
. This is used when executing a ‘normal’ query
(no eval_always
modifier)
EvalAlways
This is used when executing an eval_always
query. We don’t
need to track dependencies for a query that’s always
re-executed – but we need to know that this is an eval_always
query in order to emit dependencies to DepNodeIndex::FOREVER_RED_NODE
when directly feeding other queries.
Ignore
New dependencies are ignored. This is also used for dep_graph.with_ignore
.
Forbid
Any attempt to add new dependencies will cause a panic. This is used when decoding a query result from disk, to ensure that the decoding process doesn’t itself require the execution of any queries.
Trait Implementations§
source§impl<'a> Clone for TaskDepsRef<'a>
impl<'a> Clone for TaskDepsRef<'a>
source§fn clone(&self) -> TaskDepsRef<'a>
fn clone(&self) -> TaskDepsRef<'a>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl<'a> Debug for TaskDepsRef<'a>
impl<'a> Debug for TaskDepsRef<'a>
impl<'a> Copy for TaskDepsRef<'a>
Auto Trait Implementations§
impl<'a> !RefUnwindSafe for TaskDepsRef<'a>
impl<'a> !Send for TaskDepsRef<'a>
impl<'a> !Sync for TaskDepsRef<'a>
impl<'a> Unpin for TaskDepsRef<'a>
impl<'a> !UnwindSafe for TaskDepsRef<'a>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> T
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:
Allow
: 8 bytesEvalAlways
: 0 bytesIgnore
: 0 bytesForbid
: 0 bytes