LuaLS / LuaLS/lua-language-server
Missing diagnostic for `__call` metamethod arguments
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enhancement
- Dominant language
- Lua
- Stars
- 4.4k
- Forks
- 442
- PR merge metrics
- No merged PRs in 30d
Description
How are you using the lua-language-server?
Visual Studio Code Extension (sumneko.lua)
Which OS are you using?
Windows
What is the issue affecting?
Annotations, Type Checking, Diagnostics/Syntax Checking
Expected Behaviour
Attempting to invoke a __call metamethod using parameters inconsistent with type annotations should emit a warning.
Actual Behaviour
No warning is generated.
Reproduction steps
Sample code:
---@class MyClass
---@operator call(string, number):MyClass
local MyClass = {};
MyClass(50, false); -- this should emit some kind of warning
Additional Notes
Thank you for all the good work so far, this extension is invaluable 🥰
Log File
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the LuaLS type-checking and diagnostics handling for the ---@operator call(string, number):MyClass annotation and the MyClass(50, false) reproduction. Done means the inconsistent arguments produce a warning while calls matching the annotation remain valid.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- lua
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100