gleam-lang/gleam

LSP: function hover info should include argument labels

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#3,507 opened on Aug 12, 2024

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 (2 comments) (5 reactions) (0 assignees)Rust (21,417 stars) (960 forks)batch import
help wanted

Description

Signature help, which shows when starting to type arguments in a function call, includes the labels of said arguments, but the Hover info for functions does not (shows only the function type, no labels).

It would make the hover information more useful if it also included argument labels.

Contributor guide

Tech stack
rust
Domain
developer experiencetooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Rust programmingGleam language basicsLSP concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate the LSP hover handler in the Gleam compiler, likely in the `compiler core/src/language server/` directory. Look at how signature help includes argument labels and replicate that pattern for hover responses. Check the test files for hover to understand expected output format. No existing PRs or maintainer comments were found, so the change is straightforward but requires understanding of the AST and LSP types.