Struct OpaqueTypeStorage

pub struct OpaqueTypeStorage<'tcx> {
    opaque_types: FxIndexMap<OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>>,
    duplicate_entries: Vec<(OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>,
}

Fields

opaque_types: FxIndexMap<OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>>

duplicate_entries: Vec<(OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>

Implementations

impl<'tcx> OpaqueTypeStorage<'tcx>

pub(crate) fn remove( &mut self, key: OpaqueTypeKey<'tcx>, prev: Option<OpaqueHiddenType<'tcx>>, )

pub(crate) fn pop_duplicate_entry(&mut self)

pub(crate) fn is_empty(&self) -> bool

pub(crate) fn take_opaque_types( &mut self, ) -> impl Iterator<Item = (OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>

pub fn num_entries(&self) -> OpaqueTypeStorageEntries

pub fn opaque_types_added_since( &self, prev_entries: OpaqueTypeStorageEntries, ) -> impl Iterator<Item = (OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>

pub fn iter_lookup_table( &self, ) -> impl Iterator<Item = (OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>

Only returns the opaque types from the lookup table. These are used when normalizing opaque types and have a unique key.

Outside of canonicalization one should generally use iter_opaque_types to also consider duplicate entries.

pub fn iter_duplicate_entries( &self, ) -> impl Iterator<Item = (OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>

Only returns the opaque types which are stored in duplicate_entries.

These have to considered when checking all opaque type uses but are e.g. irrelevant for canonical inputs as nested queries never meaningfully accesses them.

pub fn iter_opaque_types( &self, ) -> impl Iterator<Item = (OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>)>

pub(crate) fn with_log<'a>( &'a mut self, undo_log: &'a mut InferCtxtUndoLogs<'tcx>, ) -> OpaqueTypeTable<'a, 'tcx>

Trait Implementations

impl<'tcx> Clone for OpaqueTypeStorage<'tcx>

fn clone(&self) -> OpaqueTypeStorage<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for OpaqueTypeStorage<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> Default for OpaqueTypeStorage<'tcx>

fn default() -> OpaqueTypeStorage<'tcx>

Returns the “default value” for a type.

impl<'tcx> Drop for OpaqueTypeStorage<'tcx>

fn drop(&mut self)

Executes the destructor for this type.

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: 80 bytes