mirror of https://github.com/astral-sh/ruff
eda85f3c64
This PR carries over some of the `has_relation_to` logic for comparing a typevar with itself. A typevar will specialize to the same type if it's mentioned multiple times, so it is always assignable to and a subtype of itself. (Note that typevars can only specialize to fully static types.) This is also true when the typevar appears in a union on the right-hand side, or in an intersection on the left-hand side. Similarly, a typevar is always disjoint from its negation, so when a negated typevar appears on the left-hand side, the constraint set is never satisfiable. (Eventually this will allow us to remove the corresponding clauses from `has_relation_to`, but that can't happen until more of #20093 lands.) |
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| resources | ||
| src | ||
| tests | ||
| Cargo.toml | ||
| build.rs | ||
| mdtest.py | ||
| mdtest.py.lock | ||