Module rustc_trait_selection::infer::resolve

Structs§

EagerResolver
Resolves ty, region, and const vars to their inferred values or their root vars.
OpportunisticRegionResolver
The opportunistic region resolver opportunistically resolves regions variables to the variable with the least variable id. It is used when normalizing projections to avoid hitting the recursion limit by creating many versions of a predicate for types that in the end have to unify.
OpportunisticVarResolver
The opportunistic resolver can be used at any time. It simply replaces type/const variables that have been unified with the things they have been unified with (similar to shallow_resolve, but deep). This is useful for printing messages etc but also required at various points for correctness.

fully_resolve
Full type resolution replaces all type and region variables with their concrete results. If any variable cannot be replaced (never unified, etc) then an Err result is returned.