Struct SemiDynamicQueryDispatcher 

pub(crate) struct SemiDynamicQueryDispatcher<'tcx, C: QueryCache, const FLAGS: QueryFlags> {
    pub(crate) vtable: &'tcx QueryVTable<'tcx, C>,
}

Combines a [QueryVTable] with some additional compile-time booleans to implement QueryDispatcher, for use by code in rustc_query_system.

Baking these boolean flags into the type gives a modest but measurable improvement to compiler perf and compiler code size; see https://github.com/rust-lang/rust/pull/151633.

Fields

vtable: &'tcx QueryVTable<'tcx, C>

Trait Implementations

impl<'tcx, C: QueryCache, const FLAGS: QueryFlags> Clone for SemiDynamicQueryDispatcher<'tcx, C, FLAGS>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'tcx, C: QueryCache, const FLAGS: QueryFlags> QueryDispatcher<'tcx> for SemiDynamicQueryDispatcher<'tcx, C, FLAGS>

where for<'a> C::Key: HashStable<StableHashingContext<'a>>,

type Qcx = QueryCtxt<'tcx>

Query context used by this dispatcher, i.e. rustc_query_impl::QueryCtxt.

type Key = <C as QueryCache>::Key

type Value = <C as QueryCache>::Value

type Cache = C

fn name(self) -> &'static str

fn will_cache_on_disk_for_key(self, tcx: TyCtxt<'tcx>, key: &Self::Key) -> bool

fn query_state(self, qcx: QueryCtxt<'tcx>) -> &'tcx QueryState<'tcx, Self::Key>

fn query_cache(self, qcx: QueryCtxt<'tcx>) -> &'tcx Self::Cache

fn execute_query(self, tcx: TyCtxt<'tcx>, key: Self::Key) -> Self::Value

fn compute(self, qcx: QueryCtxt<'tcx>, key: Self::Key) -> Self::Value

fn try_load_from_disk( self, qcx: QueryCtxt<'tcx>, key: &Self::Key, prev_index: SerializedDepNodeIndex, index: DepNodeIndex, ) -> Option<Self::Value>

fn is_loadable_from_disk( self, qcx: QueryCtxt<'tcx>, key: &Self::Key, index: SerializedDepNodeIndex, ) -> bool

fn value_from_cycle_error( self, tcx: TyCtxt<'tcx>, cycle_error: &CycleError, guar: ErrorGuaranteed, ) -> Self::Value

Synthesize an error value to let compilation continue after a cycle.

fn format_value(self) -> fn(&Self::Value) -> String

fn anon(self) -> bool

fn eval_always(self) -> bool

fn depth_limit(self) -> bool

fn feedable(self) -> bool

fn dep_kind(self) -> DepKind

fn cycle_error_handling(self) -> CycleErrorHandling

fn hash_result(self) -> HashResult<Self::Value>

fn construct_dep_node( self, tcx: <Self::Qcx as HasDepContext>::DepContext, key: &Self::Key, ) -> DepNode

impl<'tcx, C: QueryCache, const FLAGS: QueryFlags> Copy for SemiDynamicQueryDispatcher<'tcx, C, FLAGS>

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: 8 bytes