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## Summary
Implement a very basic hover in the playground and LSP.
It's basic, because it only shows the type on-hover. Most other LSPs
also show:
* The signature of the symbol beneath the cursor. E.g. `class
Test(a:int, b:int)` (we want something like
54f7da25f9/packages/pyright-internal/src/analyzer/typeEvaluator.ts (L21929-L22129))
* The symbols' documentation
* Do more fancy markdown rendering
I decided to defer these features for now because it requires new
semantic APIs (similar to *goto definition*), and investing in fancy
rendering only makes sense once we have the relevant data.
Closes [#16826](https://github.com/astral-sh/ruff/issues/16826)
## Test Plan
https://github.com/user-attachments/assets/044aeee4-58ad-4d4e-9e26-ac2a712026be
https://github.com/user-attachments/assets/4a1f4004-2982-4cf2-9dfd-cb8b84ff2ecb
Ruff Python Parser
Ruff's Python parser is a hand-written recursive descent parser which can parse Python source code into an Abstract Syntax Tree (AST). It also utilizes the Pratt parsing technique to parse expressions with different precedence.
Try out the parser in the playground.
Python version support
The parser supports the latest Python syntax, which is currently Python 3.12.
It does not throw syntax errors if it encounters a syntax feature that is not
supported by the target-version.
This will be fixed in a future release (see https://github.com/astral-sh/ruff/issues/6591).
Contributing
Refer to the contributing guidelines to get started and GitHub issues with the parser label for issues that need help.