ruff/crates/ty_python_semantic
David Peter 5ca9c15fc8
[ty] Better invalid-assignment diagnostics (#21476)
## Summary

Improve the diagnostic range for `invalid-assignment` diagnostics, and
add source annotations for the value and target type.

closes https://github.com/astral-sh/ty/issues/1556

### Before

<img width="836" height="601" alt="image"
src="https://github.com/user-attachments/assets/a48219bb-58a8-4a83-b290-d09ef50ce5f0"
/>

### After

<img width="857" height="742" alt="image"
src="https://github.com/user-attachments/assets/cfcaa4f4-94fb-459e-8d64-97050dfecb50"
/>

## Ecosystem impact

Very good! Due to the wider diagnostic range, we now pick up more `#
type: ignore` directives that were supposed to suppress an invalid
assignment diagnostic.

## Test Plan

New snapshot tests
2025-11-18 14:31:04 +01:00
..
resources [ty] Better invalid-assignment diagnostics (#21476) 2025-11-18 14:31:04 +01:00
src [ty] Better invalid-assignment diagnostics (#21476) 2025-11-18 14:31:04 +01:00
tests [ty] Limit shown import paths to at most 5 unless ty runs with `-v` (#20912) 2025-10-16 13:18:09 +02:00
Cargo.toml [ty] Some more simplifications when rendering constraint sets (#21009) 2025-10-22 13:38:44 -04:00
build.rs Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
mdtest.py [ty] Press 'enter' to rerun all mdtests (#21427) 2025-11-13 15:34:17 +01:00
mdtest.py.lock Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00