struct ScopeInstantiator<'me, 'tcx> {
    next_region: &'me mut dyn FnMut(BoundRegion) -> Region<'tcx>,
    target_index: DebruijnIndex,
    bound_region_scope: &'me mut BoundRegionScope<'tcx>,
}
Expand description

When we encounter a binder like for<..> fn(..), we actually have to walk the fn value to find all the values bound by the for (these are not explicitly present in the ty representation right now). This visitor handles that: it descends the type, tracking binder depth, and finds late-bound regions targeting the for<..>. For each of those, it creates an entry in bound_region_scope.

Fields

next_region: &'me mut dyn FnMut(BoundRegion) -> Region<'tcx>target_index: DebruijnIndexbound_region_scope: &'me mut BoundRegionScope<'tcx>

Trait Implementations

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Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

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: 32 bytes